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Cheap flights from St. Louis to Helena from $433

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Helena departing on 6/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Helena

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Helena that have been recently found on momondo from popular airlines, departing in the coming months.
Delta Logo
2:15 pm - 10:58 pmSTL-HLN
9h 43m2 stops
Delta Logo
5:44 am - 1:30 pmHLN-STL
6h 46m1 stop
$433Delta
Find Deal
Wed, Jun 11 - Tue, Jun 17
United Airlines Logo
4:32 pm - 4:55 pmSTL-HLN
25h 23m1 stop
United Airlines Logo
2:39 pm - 11:59 pmHLN-STL
8h 20m1 stop
$471United Airlines
Find Deal
Wed, Jun 11 - Tue, Jun 17
United Airlines Logo
4:32 pm - 9:15 pmSTL-HLN
5h 43m1 stop
United Airlines Logo
5:39 pm - 11:59 pmHLN-STL
5h 20m1 stop
$497United Airlines
Find Deal
Mon, Jun 16 - Thu, Jun 19
Delta Logo
2:15 pm - 10:58 pmSTL-HLN
9h 43m2 stops
Delta Logo
5:44 am - 4:53 pmHLN-STL
10h 09m2 stops
$539Delta
Find Deal
Wed, Jun 11 - Tue, Jun 17
Alaska Airlines Logo
7:32 pm - 3:31 pmSTL-HLN
20h 59m1 stop
Alaska Airlines Logo
4:09 pm - 4:39 pmHLN-STL
23h 30m2 stops
$591Alaska Airlines
Find Deal
Mon, Jun 16 - Thu, Jun 19
Alaska Airlines Logo
4:23 pm - 3:31 pmSTL-HLN
24h 08m2 stops
Alaska Airlines Logo
4:09 pm - 4:39 pmHLN-STL
23h 30m2 stops
$637Alaska Airlines
Find Deal
Mon, Jun 16 - Thu, Jun 19
United Airlines Logo
5:00 am - 4:55 pmSTL-HLN
12h 55m2 stops
United Airlines Logo
2:39 pm - 10:45 pmHLN-STL
31h 06m3 stops
$663United Airlines
Find Deal
Wed, Jun 11 - Tue, Jun 17

Delta flights from St. Louis to Helena

Our best Delta deals on St. Louis to Helena flight tickets
Delta
Jun 11
STL2:15 pmLambert-St Louis
9h 43m
2 stops
HLN10:58 pmHelena
Jun 17
HLN5:44 amHelena
6h 46m
1 stop
STL1:30 pmLambert-St Louis
Delta
Jun 11
STL2:15 pmLambert-St Louis
9h 43m
2 stops
HLN10:58 pmHelena
Jun 17
HLN5:44 amHelena
10h 09m
2 stops
STL4:53 pmLambert-St Louis

United Airlines flights from St. Louis to Helena

Our best United Airlines deals on St. Louis to Helena flight tickets
United Airlines
Jun 11
STL4:32 pmLambert-St Louis
25h 23m
1 stop
HLN4:55 pmHelena
Jun 17
HLN2:39 pmHelena
8h 20m
1 stop
STL11:59 pmLambert-St Louis
United Airlines
Jun 16
STL4:32 pmLambert-St Louis
5h 43m
1 stop
HLN9:15 pmHelena
Jun 19
HLN5:39 pmHelena
5h 20m
1 stop
STL11:59 pmLambert-St Louis
United Airlines
Jun 11
STL5:00 amLambert-St Louis
12h 55m
2 stops
HLN4:55 pmHelena
Jun 17
HLN2:39 pmHelena
31h 06m
3 stops
STL10:45 pmLambert-St Louis

See travel insights to Helena from

How to get the cheapest flight ticket from St. Louis to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from St. Louis to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $448. The most expensive day to fly to Helena is Thursday, with ticket prices averaging around $760.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from St. Louis to Helena in the morning for as low as $538. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $888.

When to book flights from St. Louis to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Helena according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Helena (STL to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Helena

Best Price Found

$433

Fastest flight time

5h 43m

Direct flights

None

Airports in Helena

1 airport
The best flight deal from St. Louis to Helena found on momondo in the last 72 hours is $433
The fastest flight from St. Louis to Helena takes 5h 43m
There are no direct flights from St. Louis to Helena. Popular non-direct route for this connection is Lambert-St Louis Airport - Helena Airport.
There is 1 airport near Helena: Helena (HLN)

  • How far is Lambert-St Louis to Helena by plane?

    The distance between Lambert-St Louis and Helena is about 1232.9 mi. Flights usually cover this in 5h 43m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Helena Airport?

    Prices for flights from Lambert-St Louis Airport to Helena Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Helena Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Helena Airport.

  • What documentation or ID do you need to fly to Helena Airport?

    The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Helena?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Helena for you.

Can I find flights from St. Louis to Helena with flexible booking policies on momondo?

momondo does allow users to show only those flights to Helena from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Helena?

Once all potential St. Louis to Helena flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Helena right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Helena from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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