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Idaho Falls Regional Airport to St. Louis Lambert International Airport flight

Explore the cheapest one-way and round-trip flights from Idaho Falls Regional Airport to St. Louis Lambert International Airport over the next 90 days, with one-way fares from MXN3,476 and round-trip from MXN7,659. Based on Trip.com's latest 7-day flight data.

    • IDA 1:05 PM
      7h 4m
      1 stop
      STL 9:09 PM
      Idaho Falls - St. Louis | Thu, Nov 5 | Delta Air Lines
      STL 5:00 PM
      6h 10m
      1 stop
      IDA 10:10 PM
      St. Louis - Idaho Falls | Mon, Nov 9 | Delta Air Lines
      MXN7,659 MXN20,276
      62% off
      62% off
      MXN20,276 MXN7,659
    • IDA 6:56 PM
      4h 48m
      1 stop
      STL 12:44 AM
      Idaho Falls - St. Louis | Sun, Nov 1 | Delta Air Lines
      STL 5:00 PM
      6h 10m
      1 stop
      IDA 10:10 PM
      St. Louis - Idaho Falls | Thu, Nov 5 | Delta Air Lines
      MXN7,667 MXN20,276
      62% off
      62% off
      MXN20,276 MXN7,667
    • IDA 6:00 AM
      6h 32m
      1 stop
      STL 1:32 PM
      Idaho Falls - St. Louis | Mon, Nov 2 | Delta Air Lines
      STL 5:00 PM
      6h 10m
      1 stop
      IDA 10:10 PM
      St. Louis - Idaho Falls | Fri, Nov 6 | Delta Air Lines
      MXN8,059 MXN20,276
      60% off
      60% off
      MXN20,276 MXN8,059
    • IDA 6:57 PM
      4h 43m
      1 stop
      STL 12:40 AM
      Idaho Falls - St. Louis | Wed, Nov 18 | Delta Air Lines
      STL 7:08 AM
      6h 7m
      1 stop
      IDA 12:15 PM
      St. Louis - Idaho Falls | Sat, Nov 21 | Delta Air Lines
      MXN8,951
      56% off
      MXN20,276 MXN8,951
    • IDA 1:50 PM
      6h 23m
      1 stop
      STL 9:13 PM
      Idaho Falls - St. Louis | Thu, Nov 5 | American Airlines
      STL 2:54 PM
      7h 49m
      1 stop
      IDA 9:43 PM
      St. Louis - Idaho Falls | Mon, Nov 9 | American Airlines
      MXN9,214
      55% off
      MXN20,276 MXN9,214
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Thu, Nov 5 | United Airlines
      STL 8:50 AM
      7h 48m
      1 stop
      IDA 3:38 PM
      St. Louis - Idaho Falls | Mon, Nov 9 | United Airlines
      MXN9,396
      54% off
      MXN20,276 MXN9,396
    • IDA 2:35 PM
      5h 24m
      1 stop
      STL 8:59 PM
      Idaho Falls - St. Louis | Tue, Nov 3 | United Airlines
      STL 8:50 AM
      5h 38m
      1 stop
      IDA 1:28 PM
      St. Louis - Idaho Falls | Sat, Nov 7 | United Airlines
      MXN9,581
      53% off
      MXN20,276 MXN9,581
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Mon, Nov 2 | United Airlines
      STL 8:50 AM
      5h 38m
      1 stop
      IDA 1:28 PM
      St. Louis - Idaho Falls | Fri, Nov 6 | United Airlines
      MXN9,750
      52% off
      MXN20,276 MXN9,750
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Fri, Nov 6 | United Airlines
      STL 8:50 AM
      7h 48m
      1 stop
      IDA 3:38 PM
      St. Louis - Idaho Falls | Tue, Nov 10 | United Airlines
      MXN9,778
      52% off
      MXN20,276 MXN9,778
    • IDA 1:00 PM
      17h 25m
      1 stop
      STL 2:00 PM
      Idaho Falls - St. Louis | Fri, Oct 30 | Normal Airline
      STL 3:00 PM
      6h
      Nonstop
      IDA 4:00 PM
      St. Louis - Idaho Falls | Sun, Nov 1 | Normal Airline
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    • Cheapest
      IDA 1:39 PM
      7h 21m
      1 stop
      STL 10:00 PM
      Idaho Falls - St. Louis | Sun, Nov 1 | American Airlines
      MXN3,476 MXN8,572
      59% off
      59% off
      MXN8,572 MXN3,476
    • IDA 6:59 PM
      4h 47m
      1 stop
      STL 12:46 AM
      Idaho Falls - St. Louis | Fri, Dec 11 | Delta Air Lines
      MXN3,591 MXN8,572
      57% off
      57% off
      MXN8,572 MXN3,591
    • IDA 2:40 PM
      5h 17m
      1 stop
      STL 8:57 PM
      Idaho Falls - St. Louis | Fri, Dec 11 | United Airlines
      MXN4,455 MXN8,572
      48% off
      48% off
      MXN8,572 MXN4,455
    • IDA 2:35 PM
      5h 24m
      1 stop
      STL 8:59 PM
      Idaho Falls - St. Louis | Sun, Nov 1 | United Airlines
      MXN4,483
      48% off
      MXN8,572 MXN4,483
    • IDA 1:50 PM
      6h 7m
      1 stop
      STL 8:57 PM
      Idaho Falls - St. Louis | Tue, Nov 3 | American Airlines
      MXN4,757
      45% off
      MXN8,572 MXN4,757
    • IDA 1:39 PM
      7h 20m
      1 stop
      STL 9:59 PM
      Idaho Falls - St. Louis | Wed, Nov 4 | American Airlines
      MXN4,769
      44% off
      MXN8,572 MXN4,769
    • IDA 6:56 PM
      4h 48m
      1 stop
      STL 12:44 AM
      Idaho Falls - St. Louis | Wed, Nov 4 | Delta Air Lines
      MXN4,942
      42% off
      MXN8,572 MXN4,942
    • IDA 6:00 AM
      6h 32m
      1 stop
      STL 1:32 PM
      Idaho Falls - St. Louis | Thu, Nov 5 | Delta Air Lines
      MXN4,942
      42% off
      MXN8,572 MXN4,942
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Tue, Nov 3 | United Airlines
      MXN5,778
      33% off
      MXN8,572 MXN5,778
    • IDA 1:00 PM
      17h 25m
      1 stop
      STL 2:00 PM
      Idaho Falls - St. Louis | Fri, Oct 30 | Normal Airline
      Find more flights
      Find more flights
    • IDA 6:59 PM
      4h 47m
      1 stop
      STL 12:46 AM
      Idaho Falls - St. Louis | Fri, Dec 11 | Delta Air Lines
      MXN3,591 MXN8,572
      57% off
      57% off
      MXN8,572 MXN3,591
    • IDA 6:56 PM
      4h 48m
      1 stop
      STL 12:44 AM
      Idaho Falls - St. Louis | Wed, Nov 4 | Delta Air Lines
      MXN4,942 MXN8,572
      42% off
      42% off
      MXN8,572 MXN4,942
    • IDA 6:56 PM
      4h 48m
      1 stop
      STL 12:44 AM
      Idaho Falls - St. Louis | Tue, Nov 3 | Delta Air Lines
      MXN6,257 MXN8,572
      27% off
      27% off
      MXN8,572 MXN6,257
    • IDA 2:40 PM
      5h 17m
      1 stop
      STL 8:57 PM
      Idaho Falls - St. Louis | Fri, Dec 11 | United Airlines
      MXN4,455
      48% off
      MXN8,572 MXN4,455
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Tue, Nov 3 | United Airlines
      MXN5,778
      33% off
      MXN8,572 MXN5,778
    • IDA 10:35 AM
      5h 22m
      1 stop
      STL 4:57 PM
      Idaho Falls - St. Louis | Thu, Nov 5 | United Airlines
      MXN5,811
      32% off
      MXN8,572 MXN5,811
    • IDA 2:35 PM
      5h 24m
      1 stop
      STL 8:59 PM
      Idaho Falls - St. Louis | Sun, Nov 1 | United Airlines
      MXN4,483
      48% off
      MXN8,572 MXN4,483
    • IDA 2:35 PM
      5h 24m
      1 stop
      STL 8:59 PM
      Idaho Falls - St. Louis | Wed, Nov 4 | United Airlines
      MXN5,811
      32% off
      MXN8,572 MXN5,811
    • IDA 1:50 PM
      6h 7m
      1 stop
      STL 8:57 PM
      Idaho Falls - St. Louis | Tue, Nov 3 | American Airlines
      MXN4,757
      45% off
      MXN8,572 MXN4,757
    • IDA 1:00 PM
      17h 25m
      1 stop
      STL 2:00 PM
      Idaho Falls - St. Louis | Fri, Oct 30 | Normal Airline
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      Find more flights

Displayed flight fares from Idaho Falls to St. Louis are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Idaho Falls Regional Airport to St. Louis Lambert International Airport?

The cheapest airline flying from Idaho Falls Regional Airport to St. Louis Lambert International Airport is Delta Air Lines (from MXN3,591) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Delta Air Lines
From MXN3,591
American Airlines
From MXN3,877
United Airlines
From MXN4,455
Allegiant Air
From MXN5,231

Find more flights and airlines

What is the flight schedule from Idaho Falls Regional Airport to St. Louis Lambert International Airport?

Check the schedule for flights from Idaho Falls to St. Louis and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL3895

    Idaho Falls Regional Airport

    6:59 PM

    IDA

    1h 26m

    Nonstop

    8:25 PM

    SLC

    - - - W T - -
    Search

  2. DL2666

    Salt Lake City International Airport

    8:45 PM

    SLC

    2h 51m

    Nonstop

    12:36 AM

    STL

    S M T W T F S

  3. UA2155

    Idaho Falls Regional Airport

    2:33 PM

    IDA

    1h 42m

    Nonstop

    4:15 PM

    DEN

    S M T W T F S
    Search

  4. UA1422

    Denver International Airport

    5:50 PM

    DEN

    2h 4m

    Nonstop

    8:54 PM

    STL

    S M T W T F S

  5. UA5793

    Idaho Falls Regional Airport

    10:40 AM

    IDA

    1h 51m

    Nonstop

    12:31 PM

    DEN

    S M T W T F S
    Search

  6. UA1639

    Denver International Airport

    1:55 PM

    DEN

    2h 2m

    Nonstop

    4:57 PM

    STL

    S M T W T F S

  7. AA4914

    Idaho Falls Regional Airport

    1:48 PM

    IDA

    3h

    Nonstop

    5:48 PM

    DFW

    S M T - - - S
    Search

  8. AA2246

    Dallas Fort Worth International Airport

    5:50 PM

    DFW

    1h 46m

    Nonstop

    7:36 PM

    STL

    S M T - - - S

  9. AA4947

    Idaho Falls Regional Airport

    6:30 AM

    IDA

    2h 20m

    Nonstop

    7:50 AM

    PHX

    S M T - - - -
    Search

  10. AA2303

    Phoenix Sky Harbor International Airport

    8:30 AM

    PHX

    3h 14m

    Nonstop

    1:44 PM

    STL

    S M T - - - S

  11. AA5009

    Idaho Falls Regional Airport

    1:50 PM

    IDA

    3h 34m

    Nonstop

    6:24 PM

    ORD

    - - - W T F -
    Search

  12. AA2444

    O'Hare Intl. Airport

    7:18 PM

    ORD

    1h 26m

    Nonstop

    8:44 PM

    STL

    - - - W T F -

  13. DL2335

    Idaho Falls Regional Airport

    5:25 AM

    IDA

    1h 26m

    Nonstop

    6:51 AM

    SLC

    S M T W T F S
    Search

  14. DL2455

    Salt Lake City International Airport

    9:25 AM

    SLC

    3h 1m

    Nonstop

    1:26 PM

    STL

    S M T W T F S

  15. DL3765

    Idaho Falls Regional Airport

    1:10 PM

    IDA

    1h 16m

    Nonstop

    2:26 PM

    SLC

    S M T W T F S
    Search

  16. DL2666

    Salt Lake City International Airport

    8:45 PM

    SLC

    2h 51m

    Nonstop

    12:36 AM

    STL

    S M T W T F S

  17. AA6466

    Idaho Falls Regional Airport

    6:00 AM

    IDA

    3h 5m

    Nonstop

    10:05 AM

    DFW

    S M T W T F S
    Search

  18. AA1363

    Dallas Fort Worth International Airport

    12:43 PM

    DFW

    1h 47m

    Nonstop

    2:30 PM

    STL

    - - - W T F -

  19. AA4972

    Idaho Falls Regional Airport

    2:08 PM

    IDA

    2h 58m

    Nonstop

    6:06 PM

    DFW

    - - - W T F -
    Search

  20. AA1010

    Dallas Fort Worth International Airport

    8:13 PM

    DFW

    1h 47m

    Nonstop

    10:00 PM

    STL

    S M T W T - S
Find more flights and airlines

About Idaho Falls Regional Airport and St. Louis Lambert International Airport

Learn about Idaho Falls Regional Airport (IDA) and St. Louis Lambert International Airport (STL) — including location, terminals, transportation, and travel tips.

Flight distance 1,889.44 km
Cheapest one-way ticket price MXN3,476
Cheapest return ticket price MXN7,659

FAQs for Idaho Falls Regional Airport to St. Louis Lambert International Airport Flights

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.
  • One-way flights from Idaho Falls Regional Airport to St. Louis Lambert International Airport currently start from MXN3,476, and round-trip fares start from MXN7,659. The current lowest fare is a American Airlines flight departing on Sun, Nov 1; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Idaho Falls Regional Airport to St. Louis Lambert International Airport is MXN5,072. Prices may vary depending on the departure date, airline, and availability.
  • Enter Idaho Falls Regional Airport and St. Louis Lambert International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.