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Cheap flights from Helena to St. Louis from $415

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to St. Louis departing on 6/23. 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 Helena to St. Louis

Cheap round-trip flights

United Airlines Logo
2:34 pm - 9:50 pmHLN-STL
6h 16m1 stop
United Airlines Logo
9:00 am - 4:04 pmSTL-HLN
8h 04m1 stop
$474United Airlines
Find Deal
Mon, Aug 18 - Thu, Aug 21
Alaska Airlines Logo
4:09 pm - 11:59 pmHLN-STL
6h 50m1 stop
Alaska Airlines Logo
5:15 am - 3:21 pmSTL-HLN
11h 06m2 stops
$586Alaska Airlines
Find Deal
Mon, Aug 18 - Thu, Aug 21
Alaska Airlines Logo
4:09 pm - 4:47 pmHLN-STL
23h 38m2 stops
Alaska Airlines Logo
5:15 am - 3:21 pmSTL-HLN
11h 06m2 stops
$590Alaska Airlines
Find Deal
Mon, Aug 18 - Thu, Aug 21
United Airlines Logo
2:39 pm - 11:59 pmHLN-STL
8h 20m1 stop
United Airlines Logo
5:00 am - 1:58 pmSTL-HLN
9h 58m2 stops
$737United Airlines
Find Deal
Wed, Jun 25 - Sun, Jun 29
United Airlines Logo
5:39 pm - 2:37 pmHLN-STL
19h 58m2 stops
United Airlines Logo
5:00 am - 1:58 pmSTL-HLN
9h 58m2 stops
$772United Airlines
Find Deal
Wed, Jun 25 - Sun, Jun 29
United Airlines Logo
2:39 pm - 8:48 pmHLN-STL
5h 09m1 stop
United Airlines Logo
1:42 pm - 4:55 pmSTL-HLN
28h 13m1 stop
$780United Airlines
Find Deal
Wed, Jun 25 - Sun, Jun 29

United Airlines flights from Helena to St. Louis

Our best United Airlines deals on Helena to St. Louis flight tickets
United Airlines
Aug 18
HLN2:34 pmHelena
6h 16m
1 stop
STL9:50 pmLambert-St Louis
Aug 21
STL9:00 amLambert-St Louis
8h 04m
1 stop
HLN4:04 pmHelena
United Airlines
Jun 18
HLN6:20 amHelena
16h 39m
1 stop
STL11:59 pmLambert-St Louis
Jun 24
STL4:32 pmLambert-St Louis
5h 43m
1 stop
HLN9:15 pmHelena
United Airlines
Jun 25
HLN2:39 pmHelena
8h 20m
1 stop
STL11:59 pmLambert-St Louis
Jun 29
STL5:00 amLambert-St Louis
9h 58m
2 stops
HLN1:58 pmHelena

Alaska Airlines flights from Helena to St. Louis

Our best Alaska Airlines deals on Helena to St. Louis flight tickets
Alaska Airlines
Aug 18
HLN4:09 pmHelena
6h 50m
1 stop
STL11:59 pmLambert-St Louis
Aug 21
STL5:15 amLambert-St Louis
11h 06m
2 stops
HLN3:21 pmHelena
Alaska Airlines
Aug 18
HLN4:09 pmHelena
23h 38m
2 stops
STL4:47 pmLambert-St Louis
Aug 21
STL5:15 amLambert-St Louis
11h 06m
2 stops
HLN3:21 pmHelena

See travel insights to St. Louis from

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

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 St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $388. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $896. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Helena in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $388 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $644 per ticket.

When to book flights from Helena to St. Louis

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

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

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

Best Price Found

$415

Fastest flight time

5h 09m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Helena in the past 72 hours is $415. The best round-trip flight deal from Helena to St. Louis found on momondo in the last 72 hours is $474.
The fastest flight from Helena to St. Louis takes 5h 09m
There are no direct flights from Helena to St. Louis. Popular non-direct route for this connection is Helena Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    Helena and Lambert-St Louis are 1232.9 mi apart from one another. By plane, this route typically takes 5h 09m.

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

    Prices for flights from Helena Airport to Lambert-St Louis Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Florissant
Fairview Heights
Maryland Heights
Collinsville
Fenton
Farmington
O'Fallon
Alton
St. Peters
Wentzville
Glencoe
Festus
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Helena to St. Louis. momondo saves you time and could save you money on your trip.

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

Flights from Helena to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Helena. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to St. Louis from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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1 adult
Tue 6/17
Tue 6/24

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