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PIT - STL

$67 Find cheap flights from Pittsburgh to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Pittsburgh to St. Louis departing on 9/7. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis (PIT-STL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pittsburgh to St. Louis 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
5:48 am - 10:24 amPIT-STL
5h 36m1 stop
8:02 pm - 6:15 pmSTL-PIT
21h 13m1 stop
Tue, Jul 16 - Wed, Jul 17
7:15 pm - 9:25 amPIT-STL
15h 10m1 stop
9:32 pm - 7:15 amSTL-PIT
8h 43m1 stop
$186Frontier
Find Deal
Thu, Jul 11 - Mon, Jul 15
10:25 pm - 5:28 pmPIT-STL
20h 03m1 stop
6:22 pm - 1:34 amSTL-PIT
6h 12m1 stop
$191Spirit Airlines
Find Deal
Wed, Jun 26 - Sat, Jun 29
7:55 am - 2:19 pmPIT-STL
7h 24m1 stop
6:15 pm - 12:55 pmSTL-PIT
17h 40m1 stop
Sat, Jul 6 - Sun, Jul 7
7:33 am - 10:14 pmPIT-STL
15h 41m1 stop
2:35 pm - 6:06 pmSTL-PIT
26h 31m1 stop
$223Spirit Airlines
Find Deal
Wed, Aug 28 - Tue, Sep 3
7:33 am - 10:14 pmPIT-STL
15h 41m1 stop
4:10 pm - 8:37 pmSTL-PIT
27h 27m3 stops
Wed, Aug 28 - Tue, Sep 3
1:35 pm - 9:35 pmPIT-STL
9h 00m1 stop
6:37 am - 11:50 amSTL-PIT
4h 13m1 stop
$266American Airlines
Find Deal
Tue, Oct 8 - Sun, Oct 13
6:15 am - 3:59 pmPIT-STL
10h 44m2 stops
6:02 am - 12:08 pmSTL-PIT
5h 06m1 stop
$441United Airlines
Find Deal
Tue, Oct 8 - Sun, Oct 13
6:15 am - 3:59 pmPIT-STL
10h 44m2 stops
6:02 am - 12:08 pmSTL-PIT
5h 06m1 stop
$472United Airlines
Find Deal
Wed, Oct 9 - Sun, Oct 13
6:15 am - 9:15 amPIT-STL
4h 00m1 stop
5:26 pm - 10:56 pmSTL-PIT
4h 30m1 stop
$688Delta
Find Deal
Fri, Jun 28 - Fri, Jul 5

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

Get data-powered insights and trends into flights from Pittsburgh to St. Louis 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 Pittsburgh to St. Louis?

The average price of all flights from Pittsburgh to St. Louis clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to St. Louis on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Pittsburgh to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Wednesdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis is December, where tickets cost $273 on average. On the other hand, the most expensive months are May and March, where the average cost of tickets is $413 and $382 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 83 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Pittsburgh to St. Louis were found on Frontier ($186) and Spirit Airlines ($191). Spirit Airlines proposed the cheapest one-way flight at $67.

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

Each day, there are between 1 and 2 nonstop flights that take off from Pittsburgh and land in St. Louis, with an average flight time of 1h 41m. The most common departure time is 8:00 am and most flights take off in the morning. 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 Pittsburgh to St. Louis?

Early birds can take the earliest flight from Pittsburgh at 7:40 am and will be landing in St. Louis at 8:20 am.

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

If you prefer to fly at night, the latest flight from Pittsburgh to St. Louis jets off at 8:20 pm and lands at 9:05 pm.

Good to know

Low season

December

High season

June

Cheapest flight

$67
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Pittsburgh to St. Louis

When to book flights from Pittsburgh to St. Louis

Are your dates flexible? Find out the best times to travel from Pittsburgh to St. Louis 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 Pittsburgh to St. Louis

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

    In the last 3 days, the lowest price for a flight from Pittsburgh to St. Louis was $67 for a one-way ticket and $177 for a round-trip.

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

    No, a passport isn't needed to fly from Pittsburgh to St. Louis. However, local authorities might ask for an official ID.

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

    Pittsburgh airport is called Pittsburgh and the only airport in St. Louis is Lambert-St Louis.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Pittsburgh to St. Louis are Delta and United Airlines. With an average price for the route of $347 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 $414 and an overall rating of 7.4.

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

    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 Pittsburgh to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Pittsburgh 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 Pittsburgh to St. Louis?

    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 St. Louis with an airline and back to Pittsburgh with another airline. Booking your flights between Pittsburgh and STL 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 Pittsburgh to St. Louis?

    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 St. Louis from Pittsburgh 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 Pittsburgh to St. Louis?

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 4 airlines serving from Pittsburgh to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Pittsburgh to St. Louis. 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 Pittsburgh to St. Louis? 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
7.4Food
8.0Entertainment
8.2Boarding
8.6Crew
7.9Comfort
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.

There were delays on both ends. It made it less than excellent. This plane was great though

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

It was a good flight. Of course it was full, but it went well.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

EVERYTHING WAS WONDERFUL HOSPITALITY THE HELP.THE SEATING FRIENDLY ALWAYS HAVE A GOOD RIDE NOT ONE BAD EXPERIENCE WITH THEM

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.

Book cheap flights from Pittsburgh to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Pittsburgh to St. Louis found on KAYAK in the last 72 hours.
9/7Sat
1 stopSpirit Airlines
11h 53mPIT-STL
$67
9/7Sat
2 stopsSpirit Airlines
10h 01mPIT-STL
$89
9/8Sun
1 stopSpirit Airlines
11h 53mPIT-STL
$109
9/7Sat
3 stopsSpirit Airlines
25h 34mPIT-STL
$145
9/8Sun
2 stopsSpirit Airlines
24h 49mPIT-STL
$148
6/4Tue
1 stopFrontier
12h 46mPIT-STL
$165
6/4Tue
3 stops
20h 09mPIT-STL
$271
6/4Tue
2 stopsAmerican Airlines
12h 19mPIT-STL
$294

Search by stops

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Last minute flights from Pittsburgh to St. Louis

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 Pittsburgh to St. Louis that are departing in the next 10 days.
6/4Tue
multi-stopSpirit Airlines
7h 04mPIT-STL
6/6Thu
multi-stopSpirit Airlines
15h 40mSTL-PIT
$299
5/31Fri
multi-stopFrontier
5h 14mPIT-STL
6/1Sat
multi-stopFrontier
8h 09mSTL-PIT
$302
6/4Tue
multi-stopSpirit Airlines
8h 57mPIT-STL
6/6Thu
multi-stopSpirit Airlines
19h 12mSTL-PIT
$351
6/4Tue
multi-stop
7h 04mPIT-STL
6/4Tue
multi-stop
26h 41mSTL-PIT
$367
6/4Tue
multi-stopSpirit Airlines
8h 57mPIT-STL
6/6Thu
multi-stopSpirit Airlines
24h 55mSTL-PIT
$386
6/4Tue
multi-stop
24h 03mPIT-STL
6/6Thu
multi-stop
31h 34mSTL-PIT
$406
6/4Tue
multi-stopUnited Airlines
7h 18mPIT-STL
6/4Tue
multi-stopUnited Airlines
5h 02mSTL-PIT
$473
6/4Tue
multi-stopAmerican Airlines
5h 29mPIT-STL
6/4Tue
multi-stopAmerican Airlines
8h 25mSTL-PIT
$576
5/31Fri
multi-stopAmerican Airlines
6h 14mPIT-STL
6/1Sat
multi-stopAmerican Airlines
9h 26mSTL-PIT
$580
5/31Fri
multi-stopUnited Airlines
7h 18mPIT-STL
6/1Sat
multi-stopUnited Airlines
10h 37mSTL-PIT
$711

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Pittsburgh - St. Louis Flights

Departure:

Pittsburgh (PIT)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Pittsburgh

Cabin classes: