HLN - STL

$343 Find Cheap Flights from Helena 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 Helena to St. Louis departing on 12/20. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena 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 Helena to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 46,646,933 times on KAYAK, and here is why:

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Cheap Flight Deals from Helena to St. Louis (HLN-STL)

 
These are the cheapest deals for flights from Helena to St. Louis currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Helena to St. Louis

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Helena to St. Louis.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:29 pm - 1:27 pmHLN-STL
20h 58m1 stop
7:00 am - 2:49 pmSTL-HLN
8h 49m1 stop
$658Alaska Airlines
Find Deal
Sun, Dec 29 - Wed, Jan 1
6:25 am - 4:25 pmHLN-STL
9h 00m1 stop
5:30 pm - 1:45 pmSTL-HLN
21h 15m2 stops
$670United Airlines
Find Deal
Sat, Dec 28 - Wed, Jan 1
6:25 am - 3:42 pmHLN-STL
8h 17m2 stops
5:30 pm - 1:45 pmSTL-HLN
21h 15m2 stops
$702United Airlines
Find Deal
Sat, Dec 28 - Wed, Jan 1
2:25 pm - 10:16 pmHLN-STL
6h 51m1 stop
6:25 am - 1:45 pmSTL-HLN
8h 20m2 stops
$710United Airlines
Find Deal
Sun, Dec 29 - Wed, Jan 1
6:25 am - 4:25 pmHLN-STL
9h 00m1 stop
1:44 pm - 1:45 pmSTL-HLN
25h 01m1 stop
$720United Airlines
Find Deal
Sat, Dec 28 - Wed, Jan 1
2:25 pm - 10:16 pmHLN-STL
6h 51m1 stop
5:30 pm - 1:45 pmSTL-HLN
21h 15m3 stops
$794United Airlines
Find Deal
Sun, Dec 29 - Wed, Jan 1

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

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

The average price of all flights from Helena to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Monday and more expensive on a Saturday. On your return trip to Helena, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

Good to know

Cheapest flight

$343
Flight from Helena to St. Louis

When to book flights from Helena to St. Louis

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

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

    In the last 3 days, the lowest price for a flight from Helena to St. Louis was $343 for a one-way ticket and $658 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Helena 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 Helena 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 Helena with another airline. Booking your flights between Helena 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 Helena 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 Helena 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 Helena to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Helena 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 Helena 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 8755 reviews
7.3Food
7.9Entertainment
7.9Comfort
8.2Boarding
8.5Crew
Airline reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

8.0 ExcellentAndrew, Nov 2024MCO - LGA
Read more Delta reviews

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

Crew was nice. Flight was timely. Seats could be better as well as the food considering it’s first class.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

Good and consistent Printer in lounge did not work for me :(

Most of my discomfort was going through TSA. However, the Delta seats had inadequate leg room and I tried my very best to connect to the wi-fi and it was a cumbersome process that finally gave me the info that I needed to sign in AFTER I had completed the flight...Why make it so difficult to use? That said I really really appreciate the pilot taking a little extra time to avoid a bad storm area and both landings in Atlanta and Orlando were flawless to my delight!!!

Delayed in taking off because no flight crew. The in seat entertainment was working properly.

I upgraded to first class only to find out that I still had no access to the sky lounge without a sky miles card or AmEx (something that should be emphasized outside of the fine print!) Also, no food or drink service provided during the flight, so I basically paid 4x more just for “free” checked baggage and a bigger seat. Not worth it.

Delta was really good about being transparent with why we were delayed it’s just that’s the plane was really old and outdated and a lot of the comfort and amenities we know Delta to have did not shine through

Bottom seat cushion is almost non existent. Very uncomfortable seat.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

The flight attendants were unhelpful. It was a packed flight, and usually a flight attendant would help find a spot in the bin for your carry on or shift things around. Neither made any effort to do so. Also, I had to then check my bag. I was told it would be on the carousel in YYZ, but it came up on the jetway. So lucky I saw others standing around for their bags. I would have walked straight past this and on to the carousel. They could have at least told me that they had given me wrong information. Very unsatisfactory.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

The check-in process is not the best They should have agents in site to help with any problem especially a rebook. Why does one have to get on the phone when there were at least 8 agents around that could have help?! Flying is stressful as it is and having someone willing to do their customer service will ease some of the stress.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

boarding was uneventful. Snack was pathetic. A tiny fruit bar. Entertainment was limited to just select movies on your own tablet or phone. No live TV. I recently flew Jetblue and they had unlimited snacks and live satellite TV the entire flight. My seat was an exit seat, 20A. It was super uncomfortable. It felt cramped and the middle seat was taken up by a large woman who pushed into my shoulder and arm. Horrible flight.

They canceled our flight and left us stranded to figure it out

Cabin was pitch black, even during meal service. The reading lights for seat 2E/F did not work, and seat 2E did not recline.

Long wait before take off without an update for 20 minutes. Flight was good otherwise.

Plane still had screens for watching movies. Good selection too.

Book cheap flights from Helena to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Helena to St. Louis found on KAYAK in the last 72 hours.
12/20Fri
1 stopUnited Airlines
6h 51mHLN-STL
$343
12/20Fri
2 stopsUnited Airlines
8h 34mHLN-STL
$472
12/21Sat
2 stopsUnited Airlines
32h 22mHLN-STL
$517

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Everything you need to know for your flight from Helena to St. Louis

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