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STL - HLN

$448 Find cheap flights from St. Louis to Helena

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Helena departing on 7/3. 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
週六 6/29
週六 7/6

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Helena, 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 Helena, 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:

Save 21% or moreCompare multiple travel sites with one search.

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Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Helena (STL-HLN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Helena 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.
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7:55 am - 12:40 pmSTL-HLN
5h 45m1 stop
6:00 am - 1:40 pmHLN-STL
6h 40m1 stop
$448Delta
Find Deal
週三, 7月 3 - 週四, 7月 11
6:06 am - 12:31 pmSTL-HLN
7h 25m2 stops
6:00 am - 2:33 pmHLN-STL
7h 33m1 stop
$453Delta
Find Deal
週日, 8月 4 - 週六, 8月 10
9:08 am - 9:18 pmSTL-HLN
13h 10m1 stop
6:45 am - 10:11 pmHLN-STL
14h 26m1 stop
$485United Airlines
Find Deal
週四, 7月 4 - 週三, 7月 17
5:30 pm - 9:18 pmSTL-HLN
28h 48m2 stops
6:45 am - 10:11 pmHLN-STL
14h 26m1 stop
$490United Airlines
Find Deal
週四, 7月 4 - 週三, 7月 17
4:36 pm - 9:18 pmSTL-HLN
5h 42m1 stop
6:45 am - 10:11 pmHLN-STL
14h 26m1 stop
$497United Airlines
Find Deal
週一, 7月 1 - 週三, 7月 17
1:45 pm - 1:44 pmSTL-HLN
24h 59m1 stop
6:45 am - 10:11 pmHLN-STL
14h 26m1 stop
$501United Airlines
Find Deal
週三, 7月 3 - 週三, 7月 17
7:00 am - 3:05 pmSTL-HLN
9h 05m1 stop
3:42 pm - 11:59 pmHLN-STL
7h 17m1 stop
$503Alaska Airlines
Find Deal
週二, 7月 2 - 週三, 7月 10
7:00 am - 11:59 pmSTL-HLN
17h 59m1 stop
3:42 pm - 11:59 pmHLN-STL
7h 17m1 stop
$520Alaska Airlines
Find Deal
週一, 7月 1 - 週三, 7月 10
7:55 am - 12:39 pmSTL-HLN
5h 44m1 stop
6:00 am - 1:40 pmHLN-STL
6h 40m1 stop
$538Delta
Find Deal
週二, 6月 18 - 週二, 7月 9
7:00 am - 3:05 pmSTL-HLN
9h 05m1 stop
7:00 am - 1:20 pmHLN-STL
29h 20m1 stop
$575Alaska Airlines
Find Deal
週二, 7月 2 - 週日, 7月 7

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

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

The average price of all flights from St. Louis to Helena clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to Helena, you should consider leaving on a Friday and avoid Wednesdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

Good to know

Low season

April

High season

August

Cheapest flight

$448
Best time to beat the crowds with an average 58% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from St. Louis to Helena

When to book flights from St. Louis to Helena

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

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

    In the last 3 days, the lowest price for a flight from St. Louis to Helena was $448 for a round-trip ticket.

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

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

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

    St. Louis and Helena are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Helena.

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

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

  • Which airline alliances offer flights from St. Louis to Helena?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Helena, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Helena are Delta and United Airlines. With an average price for the route of $543 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 $576 and an overall rating of 7.4.

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

    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 Helena.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena 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 Helena?

    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 Helena with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and HLN 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 Helena?

    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 Helena 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

Top airlines flying from St. Louis to Helena

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

St. Louis - Helena Flights

Departure:

St. Louis (STL)United States

Destination:

Helena (HLN)United States

Return flight deals:

Helena - St. Louis

Cabin classes:

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