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Cheap flight deals from St. Louis to Helena Starting at €232

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip
      • STL07:00 am
        9h 42m
        1 stop
        HLN03:42 pm
        Thu, Mar 6|St. Louis - Helena|Alaska Airlines
        €232€345
        33% OFF
        33% OFF
        €345€232

        Choose Alaska Airlines flights from St. Louis to Helena. The one-way connecting flight with Alaska Airlines departs from St. Louis Lambert International Airport on Thu, Mar 6, arriving at Helena Regional Airport. One-way Prices start from €232 including taxes and charges.

      • STL07:00 am
        7h 40m
        1 stop
        HLN01:40 pm
        Thu, Mar 6|St. Louis - Helena|United Airlines
        €314€345
        9% OFF
        9% OFF
        €345€314

        Choose United Airlines flights from St. Louis to Helena. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Thu, Mar 6, arriving at Helena Regional Airport. One-way Prices start from €314 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        HLN02:00 pm
        Thu, Feb 27|St. Louis - Helena|Alaska Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

St. Louis to Helena Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA2625

    United Airlines

    01:41 pm

    STL

    2.5h

    03:10 pm

    DEN

    SMTWTFS
    Search

  2. UA4705

    United Airlines

    07:10 pm

    DEN

    2.1h

    09:15 pm

    HLN

    SMTWTFS

  3. UA1004

    United Airlines

    04:30 pm

    STL

    2.3h

    05:50 pm

    DEN

    SMTWTFS
    Search

  4. UA4705

    United Airlines

    07:10 pm

    DEN

    2.1h

    09:15 pm

    HLN

    SMTWTFS

  5. DL1492

    Delta Air Lines

    06:59 pm

    STL

    3.5h

    09:32 pm

    SLC

    SMTWTFS
    Search

  6. DL3839

    Delta Air Lines

    09:05 pm

    SLC

    1.5h

    10:35 pm

    HLN

    SMTWTFS

  7. AS504

    Alaska Airlines

    07:00 am

    STL

    4.3h

    09:17 am

    SEA

    SMTWTFS
    Search

  8. AS2322

    Alaska Airlines

    01:51 pm

    SEA

    1.5h

    04:23 pm

    HLN

    ------S

  9. HA6969

    Hawaiian Airlines

    07:00 am

    STL

    4.6h

    09:35 am

    SEA

    SMTWT-S
    Search

  10. HA6611

    Hawaiian Airlines

    01:10 pm

    SEA

    1.5h

    03:42 pm

    HLN

    SMTWTFS

  11. AS504

    Alaska Airlines

    07:00 am

    STL

    4.3h

    09:17 am

    SEA

    SMTWTFS
    Search

  12. AS2222

    Alaska Airlines

    01:00 pm

    SEA

    1.5h

    03:31 pm

    HLN

    SMTWTFS

  13. DL2363

    Delta Air Lines

    07:40 am

    STL

    3.5h

    10:13 am

    SLC

    SMTWTFS
    Search

  14. DL3880

    Delta Air Lines

    11:00 am

    SLC

    1.6h

    12:37 pm

    HLN

    SMTWTFS

  15. UA2135

    United Airlines

    08:20 am

    STL

    2.5h

    09:53 am

    DEN

    SMTWTFS
    Search

  16. UA4705

    United Airlines

    07:10 pm

    DEN

    2.1h

    09:15 pm

    HLN

    SMTWTFS

  17. UA2135

    United Airlines

    08:20 am

    STL

    2.5h

    09:53 am

    DEN

    SMTWTFS
    Search

  18. UA5388

    United Airlines

    11:30 am

    DEN

    2.0h

    01:31 pm

    HLN

    SMTWTFS

  19. DL1289

    Delta Air Lines

    11:50 am

    STL

    1.6h

    02:27 pm

    DTW

    SMTWTFS
    Search

  20. DL765

    Delta Air Lines

    05:45 pm

    DTW

    4.0h

    07:48 pm

    SLC

    SMTWTFS

  21. DL3839

    Delta Air Lines

    09:05 pm

    SLC

    1.5h

    10:35 pm

    HLN

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from St. Louis to Helena?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from St. Louis (STL) to Helena (HLN) the cheapest?

    Airlines adjust prices for flights from St. Louis to Helena based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from St. Louis (STL) to Helena (HLN) cost?

    According to Trip.com's data, the lowest price is around €589.

How to find a cheap flight from St. Louis to Helena

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Helena. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | St. Louis to Helena

Cheapest nonstop flight price€232
Off-season for travelFebruary
Peak season for travelJanuary
Flight distance1,983.91 km
Popular airlineAlaska Airlines

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