STL - HLN

$382 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 1/20. 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
1 adult, Economy, 0 bags

KAYAK searches 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
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Everything you should know

Cheapest round-trip
$382
Alaska Airlines
Tue 1/20Tue 1/27
STL - HLN • 1 stop
Cheapest one-way
Multiple Airlines
Thu 12/18
STL - HLN • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

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

Tue, Jan 20 - Tue, Jan 27
Alaska Airlines Logo
2:50 pm - 6:11 pm
STL
-
HLN
28h 21m1 stop
Alaska Airlines Logo
6:48 pm - 1:54 pm
HLN
-
STL
18h 06m1 stop
$382Alaska Airlines
Sat, Jan 17 - Tue, Jan 27
Alaska Airlines Logo
6:19 pm - 6:11 pm
STL
-
HLN
24h 52m1 stop
Alaska Airlines Logo
6:48 pm - 1:54 pm
HLN
-
STL
18h 06m1 stop
$392Alaska Airlines
Sat, Jan 17 - Mon, Jan 26
Alaska Airlines Logo
6:19 pm - 6:11 pm
STL
-
HLN
24h 52m1 stop
Alaska Airlines Logo
6:48 pm - 1:54 pm
HLN
-
STL
18h 06m1 stop
$402Alaska Airlines
Tue, Jan 20 - Sat, Jan 24
Alaska Airlines Logo
2:50 pm - 6:11 pm
STL
-
HLN
28h 21m1 stop
Alaska Airlines Logo
6:48 pm - 1:54 pm
HLN
-
STL
18h 06m1 stop
$412Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
7:00 am - 3:59 pm
STL
-
HLN
9h 59m1 stop
Alaska Airlines Logo
4:36 pm - 2:23 pm
HLN
-
STL
20h 47m1 stop
$413Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
7:00 am - 3:59 pm
STL
-
HLN
9h 59m1 stop
Alaska Airlines Logo
4:36 pm - 2:23 pm
HLN
-
STL
20h 47m1 stop
$415Alaska Airlines
Sat, Jan 17 - Thu, Jan 22
Alaska Airlines Logo
6:19 pm - 6:11 pm
STL
-
HLN
24h 52m1 stop
Alaska Airlines Logo
6:48 pm - 10:46 pm
HLN
-
STL
26h 58m1 stop
$422Alaska Airlines
Tue, Jan 20 - Tue, Jan 27
Delta Logo
2:38 pm - 10:29 pm
STL
-
HLN
8h 51m1 stop
Delta Logo
1:10 pm - 11:25 pm
HLN
-
STL
9h 15m2 stops
$430Delta
Sun, Jan 18 - Tue, Jan 27
Delta Logo
5:00 pm - 10:29 pm
STL
-
HLN
6h 29m1 stop
Delta Logo
5:30 am - 1:48 pm
HLN
-
STL
7h 18m1 stop
$433Delta
Sat, Jan 17 - Tue, Jan 27
Delta Logo
5:00 pm - 10:29 pm
STL
-
HLN
6h 29m1 stop
Delta Logo
5:30 am - 4:45 pm
HLN
-
STL
10h 15m2 stops
$438Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Helena flights

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 round-trip flights from St. Louis to Helena clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Helena on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from St. Louis to Helena. For your return ticket, we recommend flying on a Friday and avoiding Saturdays for the best deals.

Find deals

Good to know

Cheapest flight$382
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 $382 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.

  • 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.

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

Information on your arrival and departure airports

St. Louis (STL)
Helena (HLN)