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STL - PIT

$53 Find cheap flights from St. Louis to Pittsburgh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Pittsburgh departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to Pittsburgh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Pittsburgh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Pittsburgh, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Pittsburgh (STL-PIT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Pittsburgh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:36 pm - 7:19 amSTL-PIT
7h 43m1 stop
10:38 pm - 9:40 amPIT-STL
12h 02m1 stop
$138Frontier
Find Deal
Mon, Jun 10 - Thu, Jun 20
8:02 pm - 9:09 pmSTL-PIT
24h 07m1 stop
12:09 pm - 9:29 amPIT-STL
22h 20m1 stop
$150Frontier
Find Deal
Wed, Jun 12 - Tue, Jun 18
3:23 pm - 1:34 amSTL-PIT
9h 11m1 stop
5:48 am - 7:59 pmPIT-STL
15h 11m1 stop
$189Spirit Airlines
Find Deal
Tue, Jul 9 - Thu, Jul 11
8:49 pm - 11:04 pmSTL-PIT
25h 15m1 stop
10:16 pm - 9:26 amPIT-STL
12h 10m1 stop
$198Spirit Airlines
Find Deal
Thu, Jul 11 - Mon, Jul 15
6:00 am - 3:16 pmSTL-PIT
8h 16m1 stop
5:00 am - 8:30 amPIT-STL
4h 30m1 stop
$264American Airlines
Find Deal
Wed, Jul 3 - Sun, Jul 7
6:30 am - 1:29 pmSTL-PIT
5h 59m1 stop
6:15 am - 9:15 amPIT-STL
4h 00m1 stop
$266Delta
Find Deal
Wed, Jun 12 - Wed, Jun 19
6:30 am - 1:29 pmSTL-PIT
5h 59m1 stop
6:18 pm - 11:43 pmPIT-STL
6h 25m1 stop
$276Delta
Find Deal
Wed, Jun 12 - Mon, Jun 17
5:38 pm - 11:56 pmSTL-PIT
5h 18m1 stop
5:07 am - 8:33 amPIT-STL
4h 26m1 stop
$323American Airlines
Find Deal
Fri, Jun 14 - Sun, Jun 16
5:30 pm - 11:55 pmSTL-PIT
5h 25m1 stop
11:10 am - 3:40 pmPIT-STL
5h 30m1 stop
$352United Airlines
Find Deal
Tue, Jul 9 - Thu, Jul 11
10:19 am - 4:56 pmSTL-PIT
5h 37m1 stop
6:20 am - 3:40 pmPIT-STL
10h 20m2 stops
$380United Airlines
Find Deal
Wed, Jul 31 - Wed, Aug 7

Flights from St. Louis to Pittsburgh - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Pittsburgh to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Pittsburgh?

The average price of all flights from St. Louis to Pittsburgh clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Pittsburgh, look for departures on Mondays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from Pittsburgh, Tuesday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from St. Louis to Pittsburgh?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Pittsburgh is September, where tickets cost $275 on average. On the other hand, the most expensive months are January and May, where the average cost of tickets is $438 and $385 respectively.

How far in advance should I book a flight from St. Louis to Pittsburgh?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Pittsburgh, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 77 days before departure.

Which airlines provide the cheapest flights from St. Louis to Pittsburgh?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Spirit Airlines offered the best one-way deal for that route, at $53. KAYAK users also found St. Louis to Pittsburgh round-trip flights on Frontier from $138 and on Spirit Airlines from $189.

How many flights are there between St. Louis and Pittsburgh per day?

Each day, there are between 1 and 2 nonstop flights that take off from St. Louis and land in Pittsburgh, with an average flight time of 1h 35m. The most common departure time is 7:00 pm and most flights take off in the evening. Each week, there are 8 flights. The most frequent day of departure is Sunday, when 25% of all weekly flights depart. The fewest flights depart on a Friday.

What’s the earliest departure time from St. Louis to Pittsburgh?

Early birds can take the earliest flight from St. Louis at 9:10 am and will be landing in Pittsburgh at 11:45 am.

What’s the latest departure time from St. Louis to Pittsburgh?

If you prefer to fly at night, the latest flight from St. Louis to Pittsburgh jets off at 9:10 pm and lands at 11:45 pm.

Good to know

Low season

March

High season

July

Cheapest flight

$53
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from St. Louis to Pittsburgh

When to book flights from St. Louis to Pittsburgh

Are your dates flexible? Find out the best times to travel from St. Louis to Pittsburgh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Pittsburgh

  • What is the cheapest flight from St. Louis to Pittsburgh?

    In the last 3 days, the lowest price for a flight from St. Louis to Pittsburgh was $53 for a one-way ticket and $138 for a round-trip.

  • Do I need a passport to fly between St. Louis and Pittsburgh?

    No

  • Which airports will I be using when flying from St. Louis to Pittsburgh?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Pittsburgh, also known as Pittsburgh.

  • Which aircraft models fly most regularly from St. Louis to Pittsburgh?

    We unfortunately don’t have that data for this specific route.

  • On which days can I fly direct from St. Louis to Pittsburgh?

    There are nonstop flights from St. Louis to Pittsburgh on a daily basis.

  • Which is the best airline for flights from St. Louis to Pittsburgh, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Pittsburgh are Delta and United Airlines. With an average price for the route of $324 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $341 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Pittsburgh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Pittsburgh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Pittsburgh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Pittsburgh from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Pittsburgh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Pittsburgh with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PIT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Pittsburgh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Pittsburgh from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from St. Louis to Pittsburgh?

Find which airlines fly direct from Lambert-St Louis to Pittsburgh, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Pittsburgh

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Pittsburgh to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 4 airlines serving from St. Louis to Pittsburgh

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Pittsburgh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Pittsburgh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
7.9Comfort
8.2Boarding
8.6Crew
7.4Food
8.0Entertainment
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Too bad that first class seats do not recline significantly causing discomfort

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Was as expected. Good leg room on planes - much appreciated.

This was the smoothest flight I have had in awhile. I was also offered an exit row seat for a great upgrade cost and was able to sleep almost thr whole flight due to comfort and a smooth flight. We left on time and arrived on time.

No food not even water offered unless you buy it and no usb in the seat but other than that everything was good

Because our flight from marsh Harbor to Fort Lauderdale was over three hours delayed it caused us to miss our flight in Fort Lauderdale. Because we missed that flight, it cost us nearly $100 apiece for four different travelers which totaled nearly $400. We are seeking a reimbursement for the flight that we missed in Fort Lauderdale Florida.

Flight expected to leave at 6:40 pm ended leaving at 8:00 am the following day. I slept in a cold airport. Never again Spirit for me…

The flight was on time and nice as always for me with spirit but the cabin crew were not good. They left the lights on on a red eye for the entire flight.

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

I got a one-way, last-minute nonstop flight from PDX to BWI for only $125. Yes, I got nicked $79 more for a checked suitcase and $89 more for the BIG SEAT option, but it was worth it, even with $4.50 for coffee and $10 for a snack (the latter no different than any other airline). The grand total was still less flying on any other airline.

It was the worst ever, i will be filing a lawsuit to get a refund. Our flight was delayed 4 hours so we would miss our connecting flight, we were not rebooked to our destination the same day, we were not offered any options to get home on the same day despite being clear that we absolutely cannot get stranded at night due to family, we were forced to book our own flights on a different airline to get home, and spririt is refusing a refund because our flight wasn't cancelled, only delayed. oh yeah, and they lost our luggage on the first part of the trip and you cannot get a hold of customer service when anything goes wrong, on hold for 30+ minutes. and their app breaks so you can't use that either.

This recognisable no-frills airline gets me from point-A to point-B. I was able to get to Chicago without stress. The checked baggage collection and reclaim could be improved.

The crew was the best and very accommodating I know you don't offer any complimentary items but water and coffee will not break the bank !!

Book cheap flights from St. Louis to Pittsburgh

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Pittsburgh found on KAYAK in the last 72 hours.
9/11Wed
1 stopSpirit Airlines
7h 34mSTL-PIT
$53
6/18Tue
1 stopSpirit Airlines
7h 35mSTL-PIT
$84
9/6Fri
1 stopSpirit Airlines
7h 34mSTL-PIT
$86
6/18Tue
1 stopSpirit Airlines
10h 14mSTL-PIT
$94
9/6Fri
3 stopsSpirit Airlines
23h 17mSTL-PIT
$108
9/6Fri
2 stopsSpirit Airlines
27h 54mSTL-PIT
$116
6/7Fri
3 stops
23h 14mSTL-PIT
$225
6/7Fri
1 stopAmerican Airlines
5h 04mSTL-PIT
$233
9/11Wed
2 stopsAmerican Airlines
7h 03mSTL-PIT
$284
10/4Fri
1 stopUnited Airlines
5h 06mSTL-PIT
$374

Search by stops

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Last minute flights from St. Louis to Pittsburgh

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Pittsburgh that are departing in the next 10 days.
5/31Fri
multi-stopAmerican Airlines
5h 32mSTL-PIT
6/3Mon
multi-stopAmerican Airlines
6h 32mPIT-STL
$475
5/31Fri
multi-stop
28h 43mSTL-PIT
6/4Tue
multi-stop
7h 04mPIT-STL
$554
5/31Fri
multi-stop
28h 43mSTL-PIT
6/4Tue
multi-stop
20h 09mPIT-STL
$566
5/31Fri
multi-stopAmerican Airlines
8h 25mSTL-PIT
6/2Sun
multi-stopAmerican Airlines
4h 14mPIT-STL
$580
5/31Fri
multi-stopAmerican Airlines
9h 16mSTL-PIT
6/3Mon
multi-stopAmerican Airlines
8h 17mPIT-STL
$585
5/31Fri
multi-stop
36h 49mSTL-PIT
6/3Mon
multi-stop
20h 45mPIT-STL
$594
5/31Fri
multi-stop
28h 43mSTL-PIT
6/3Mon
multi-stop
34h 20mPIT-STL
$623
5/31Fri
multi-stop
36h 49mSTL-PIT
6/3Mon
multi-stop
34h 20mPIT-STL
$629
5/31Fri
multi-stopAlaska Airlines
14h 43mSTL-PIT
6/3Mon
multi-stopAlaska Airlines
17h 09mPIT-STL
$1,412
5/31Fri
multi-stopAlaska Airlines
25h 54mSTL-PIT
6/3Mon
multi-stopAlaska Airlines
27h 49mPIT-STL
$1,607

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St. Louis - Pittsburgh Flights

Departure:

St. Louis (STL)United States

Destination:

Pittsburgh (PIT)United States

Return flight deals:

Pittsburgh - St. Louis

Cabin classes: