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Flights from St. Louis to Key West
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Flights from St. Louis to Key West Starting at AU$169

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

  • One way
  • Round-trip
      • STL12:52
        6h 19m
        1 stop
        EYW20:11
        Tue, Mar 4|St. Louis - Key West|Delta Air Lines
        AU$169AU$395
        56% OFF
        56% OFF
        AU$395AU$169

        Choose Delta Air Lines flights from St. Louis to Key West. The one-way connecting flight with Delta Air Lines departs from St. Louis Lambert International Airport on Tue, Mar 4, arriving at Key West International Airport. One-way Prices start from AU$169 including taxes and charges.

      • STL12:52
        6h 19m
        1 stop
        EYW20:11
        Sat, Feb 22|St. Louis - Key West|Delta Air Lines
        AU$169AU$395
        56% OFF
        56% OFF
        AU$395AU$169

        Choose Delta Air Lines flights from St. Louis to Key West. The one-way connecting flight with Delta Air Lines departs from St. Louis Lambert International Airport on Sat, Feb 22, arriving at Key West International Airport. One-way Prices start from AU$169 including taxes and charges.

      • STL17:24
        19h 56m
        1 stop
        EYW14:20
        Tue, Mar 11|St. Louis - Key West|Frontier Airlines
        AU$214AU$395
        46% OFF
        46% OFF
        AU$395AU$214

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Tue, Mar 11, arriving at Key West International Airport. One-way Prices start from AU$214 including taxes and charges.

      • STL17:20
        15h 50m
        1 stop
        EYW10:10
        Tue, Mar 4|St. Louis - Key West|Frontier Airlines
        AU$218
        AU$218

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Tue, Mar 4, arriving at Key West International Airport. One-way Prices start from AU$218 including taxes and charges.

      • STL17:20
        20h
        1 stop
        EYW14:20
        Mon, Feb 24|St. Louis - Key West|Frontier Airlines
        AU$230
        AU$230

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Mon, Feb 24, arriving at Key West International Airport. One-way Prices start from AU$230 including taxes and charges.

      • STL17:05
        20h 15m
        1 stop
        EYW14:20
        Sun, Feb 2|St. Louis - Key West|Frontier Airlines
        AU$231
        AU$231

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sun, Feb 2, arriving at Key West International Airport. One-way Prices start from AU$231 including taxes and charges.

      • STL17:20
        15h 50m
        1 stop
        EYW10:10
        Sun, Feb 16|St. Louis - Key West|Frontier Airlines
        AU$238
        AU$238

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sun, Feb 16, arriving at Key West International Airport. One-way Prices start from AU$238 including taxes and charges.

      • STL08:00
        5h 49m
        1 stop
        EYW14:49
        Tue, Feb 4|St. Louis - Key West|United Airlines
        AU$252
        AU$252

        Choose United Airlines flights from St. Louis to Key West. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Tue, Feb 4, arriving at Key West International Airport. One-way Prices start from AU$252 including taxes and charges.

      • STL17:20
        15h 50m
        1 stop
        EYW10:10
        Sun, Feb 23|St. Louis - Key West|Frontier Airlines
        AU$254
        AU$254

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sun, Feb 23, arriving at Key West International Airport. One-way Prices start from AU$254 including taxes and charges.

      • STL17:05
        20h 15m
        1 stop
        EYW14:20
        Sun, Jan 26|St. Louis - Key West|Frontier Airlines
        AU$255
        AU$255

        Choose Frontier Airlines flights from St. Louis to Key West. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sun, Jan 26, arriving at Key West International Airport. One-way Prices start from AU$255 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        EYW02:00 pm
        Fri, Jan 31|St. Louis - Key West|Delta Air Lines
        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 Key West flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL1524

    Delta Air Lines

    06:00

    STL

    1.6h

    08:39

    ATL

    SMTWTFS
    Search

  2. DL1472

    Delta Air Lines

    12:00

    ATL

    1.8h

    13:49

    EYW

    SMTWTFS

  3. AA629

    American Airlines

    06:06

    STL

    1.3h

    07:25

    ORD

    SMTWT-S
    Search

  4. UA2070

    United Airlines

    10:35

    ORD

    3.2h

    14:49

    EYW

    SMTWTFS

  5. AA5281

    American Airlines

    06:09

    STL

    2.3h

    09:29

    DCA

    SMTWTFS
    Search

  6. AA3545

    American Airlines

    12:28

    DCA

    3.1h

    15:36

    EYW

    SMTWTFS

  7. UA1371

    United Airlines

    06:15

    STL

    2.4h

    08:40

    IAH

    SMTWTFS
    Search

  8. UA796

    United Airlines

    11:55

    IAH

    2.4h

    15:20

    FLL

    SMTWTFS

  9. UA3094

    United Airlines

    17:50

    FLL

    1.1h

    18:55

    EYW

    SMTWTFS

  10. UA1371

    United Airlines

    06:15

    STL

    2.4h

    08:40

    IAH

    SMTWTFS
    Search

  11. UA6200

    United Airlines

    12:09

    IAH

    2.9h

    16:01

    EYW

    S--WTFS

  12. WN1477

    Southwest Airlines

    07:05

    STL

    2.7h

    10:45

    FLL

    SMTWTFS
    Search

  13. UA3094

    United Airlines

    17:50

    FLL

    1.1h

    18:55

    EYW

    SMTWTFS

  14. UA4183

    United Airlines

    08:00

    STL

    1.4h

    09:22

    ORD

    SMTWTFS
    Search

  15. UA2070

    United Airlines

    10:35

    ORD

    3.2h

    14:49

    EYW

    SMTWTFS

  16. DL1571

    Delta Air Lines

    10:10

    STL

    1.6h

    12:46

    ATL

    SMTWTFS
    Search

  17. DL2168

    Delta Air Lines

    15:18

    ATL

    1.9h

    17:13

    EYW

    SMTWTFS

  18. DL566

    Delta Air Lines

    14:05

    STL

    1.7h

    16:46

    ATL

    SMTWTFS
    Search

  19. DL2815

    Delta Air Lines

    18:39

    ATL

    1.8h

    20:29

    EYW

    SMTWTFS

  20. F92636

    Frontier Airlines

    17:05

    STL

    2.5h

    20:36

    MCO

    SMTWTFS
    Search

  21. UA3075

    United Airlines

    09:10

    MCO

    1.4h

    10:35

    EYW

    SMTWTFS
Find more flights and airlines

Find the best time to fly from St. Louis to Key West

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.

FAQ

  • When are flight tickets from St. Louis (STL) to Key West (EYW) the cheapest?

    Airlines adjust prices for flights from St. Louis to Key West 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 Key West (EYW) cost?

    According to Trip.com's data, the lowest price is around AU$736.

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

    • The distance from Key West International Airport to downtown is about 2 km. It takes about 20 minutes by taxi.

How to find a cheap flight from St. Louis to Key West

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 Key West. 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 Information from St. Louis to Key West

Cheapest nonstop flight priceAU$169
Off-season for travelJanuary
Peak season for travelApril
Flight distance1,753.57 km
Popular airlineDelta Air Lines

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