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St. Louis Lambert International Airport to Casper–Natrona County International Airport flight
    • STL 8:50 AM
      4h 58m
      1 stop
      CPR 12:48 PM
      St. Louis - Casper | Sun, Nov 29 | United Airlines
      CPR 1:21 PM
      6h 36m
      1 stop
      STL 8:57 PM
      Casper - St. Louis | Sat, Dec 5 | United Airlines
      $440 $541
      19% off
      19% off
      $541 $440
    • STL 1:40 PM
      9h 19m
      1 stop
      CPR 9:59 PM
      St. Louis - Casper | Sun, Nov 15 | United Airlines
      CPR 11:24 AM
      8h 35m
      1 stop
      STL 8:59 PM
      Casper - St. Louis | Thu, Nov 19 | United Airlines
      $462 $541
      15% off
      15% off
      $541 $462
    • STL 8:50 AM
      9h 27m
      1 stop
      CPR 5:17 PM
      St. Louis - Casper | Fri, Nov 13 | United Airlines
      CPR 1:29 PM
      6h 30m
      1 stop
      STL 8:59 PM
      Casper - St. Louis | Tue, Nov 17 | United Airlines
      $464 $541
      14% off
      14% off
      $541 $464
    • STL 1:40 PM
      7h 52m
      1 stop
      CPR 8:32 PM
      St. Louis - Casper | Sun, Nov 8 | United Airlines
      CPR 7:00 AM
      8h 57m
      1 stop
      STL 4:57 PM
      Casper - St. Louis | Thu, Nov 12 | United Airlines
      $466
      14% off
      $541 $466
    • STL 4:39 PM
      4h 53m
      1 stop
      CPR 8:32 PM
      St. Louis - Casper | Tue, Nov 10 | United Airlines
      CPR 5:15 AM
      6h 23m
      1 stop
      STL 12:38 PM
      Casper - St. Louis | Sat, Nov 14 | United Airlines
      $467
      14% off
      $541 $467
    • STL 8:50 AM
      4h 58m
      1 stop
      CPR 12:48 PM
      St. Louis - Casper | Fri, Nov 6 | United Airlines
      CPR 7:00 AM
      4h 38m
      1 stop
      STL 12:38 PM
      Casper - St. Louis | Tue, Nov 10 | United Airlines
      $470
      13% off
      $541 $470
    • STL 1:00 PM
      17h 25m
      1 stop
      CPR 2:00 PM
      St. Louis - Casper | Fri, Nov 6 | Normal Airline
      CPR 3:00 PM
      6h
      Nonstop
      STL 4:00 PM
      Casper - St. Louis | Sun, Nov 8 | Normal Airline
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Displayed flight fares from St. Louis to Casper 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 St. Louis Lambert International Airport to Casper–Natrona County International Airport?

The cheapest airline flying from St. Louis Lambert International Airport to Casper–Natrona County International Airport is United Airlines (from $432) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.

United Airlines
From $432

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What is the flight schedule from St. Louis Lambert International Airport to Casper–Natrona County International Airport?

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

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA663

    St. Louis Lambert International Airport

    4:39 PM

    STL

    2h 31m

    Nonstop

    6:10 PM

    DEN

    S M T W T F S
    Search

  2. UA5802

    Denver International Airport

    7:05 PM

    DEN

    1h 12m

    Nonstop

    8:17 PM

    CPR

    S M T W T F S

  3. UA1352

    St. Louis Lambert International Airport

    8:50 AM

    STL

    2h 31m

    Nonstop

    10:21 AM

    DEN

    S M T W T F S
    Search

  4. UA4687

    Denver International Airport

    11:27 AM

    DEN

    1h 8m

    Nonstop

    12:35 PM

    CPR

    S M T W T F S

  5. UA1380

    St. Louis Lambert International Airport

    1:44 PM

    STL

    2h 29m

    Nonstop

    3:13 PM

    DEN

    S M T W T F S
    Search

  6. UA5802

    Denver International Airport

    7:05 PM

    DEN

    1h 12m

    Nonstop

    8:17 PM

    CPR

    S M T W T F S

  7. UA1380

    St. Louis Lambert International Airport

    1:44 PM

    STL

    2h 29m

    Nonstop

    3:13 PM

    DEN

    S M T W T F S
    Search

  8. UA5226

    Denver International Airport

    9:00 PM

    DEN

    1h 12m

    Nonstop

    10:12 PM

    CPR

    S M T W T F S

  9. UA1352

    St. Louis Lambert International Airport

    8:50 AM

    STL

    2h 31m

    Nonstop

    10:21 AM

    DEN

    S M T W T F S
    Search

  10. UA5294

    Denver International Airport

    3:52 PM

    DEN

    1h 12m

    Nonstop

    5:04 PM

    CPR

    S M T W T F S
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About St. Louis Lambert International Airport and Casper–Natrona County International Airport

Learn about St. Louis Lambert International Airport (STL) and Casper–Natrona County International Airport (CPR) — including location, terminals, transportation, and travel tips.

Flight distance 1,430.32 km
Cheapest return ticket price $440

FAQs for St. Louis Lambert International Airport to Casper–Natrona County International Airport Flights

  • What is the transportation method from the main airport to downtown in Casper?

    • The distance from Casper–Natrona County International Airport to downtown is about 12 km. It takes about 30 minutes by taxi.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from St. Louis Lambert International Airport to Casper–Natrona County International Airport is $313. Prices may vary depending on the departure date, airline, and availability.
  • Enter St. Louis Lambert International Airport and Casper–Natrona County 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.

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

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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.

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