$93+ Cheap flights from St. Louis to Key West (STL - EYW)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EYW
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Key West
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Best
Last-minute
One-way
Cheapest flights from St. Louis to Key WestExplore the most affordable flight options available from St. Louis to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from St. Louis to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm -
2 stops37h 49m
Mon 11/210:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:26 pm -
1 stop14h 13m
Thu 11/512:01 pm -
2 stops30h 39m
Deal found 9/6![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop16h 49m
Thu 10/1512:01 pm -
2 stops30h 39m
Deal found 9/4![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop16h 49m
Thu 11/1210:59 am -
2 stops31h 41m
Deal found 9/5![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:30 pm -
1 stop16h 49m
Sun 11/110:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:05 pm -
1 stop15h 14m
Tue 12/810:59 am -
1 stop14h 42m
Deal found 9/4![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm -
2 stops37h 49m
Sun 11/110:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:59 pm -
1 stop15h 25m
Mon 11/3010:59 am -
2 stops45h 10m
Deal found 9/4![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:30 pm -
1 stop16h 49m
Wed 11/410:04 am -
2 stops8h 36m
Deal found 9/6![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:44 pm -
2 stops14h 35m
Fri 11/610:59 am -
1 stop13h 17m
Deal found 9/8![Multiple Airlines logo]()
$296
Best flights from St. Louis to Key WestDiscover carefully curated flight deals from St. Louis to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from St. Louis to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:36 pm -
1 stop6h 26m
Tue 12/87:25 am -
1 stop7h 03m
Deal found 9/4![Delta logo]()
$351
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:30 am -
1 stop6h 59m
Wed 11/44:10 pm -
1 stop8h 14m
Deal found 9/6![United Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/266:18 am -
2 stops10h 04m
Sun 1/316:41 pm -
1 stop16h 31m
Deal found 9/8![American Airlines logo]()
$495
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:00 pm -
1 stop7h 00m
Sat 9/267:40 am -
1 stop5h 52m
Deal found 9/7![Delta logo]()
$423
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/287:05 am -
1 stop4h 54m
Wed 12/27:25 am -
1 stop7h 03m
Deal found 9/8![Delta logo]()
$441
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:25 pm -
1 stop4h 36m
Sat 10/176:11 pm -
1 stop6h 43m
Deal found 9/7![Delta logo]()
$479
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:33 pm -
1 stop4h 29m
Fri 12/116:06 pm -
2 stops17h 54m
Deal found 9/4![Delta logo]()
$491
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:29 pm -
1 stop6h 31m
Thu 11/267:25 am -
1 stop6h 58m
Deal found 9/5![Delta logo]()
$540
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:33 pm -
1 stop4h 29m
Fri 12/116:06 pm -
2 stops21h 38m
Deal found 9/4![Delta logo]()
$560
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:36 pm -
1 stop6h 26m
Thu 12/107:25 am -
1 stop5h 04m
Deal found 9/4![Delta logo]()
$593
Last-minute flights from St. Louis to Key WestDiscover last-minute flight deals from St. Louis to Key West. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Key West. Data last updated September 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops43h 52m
Fri 10/910:59 am -
1 stop13h 14m
Deal found 9/4![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop16h 49m
Thu 10/1512:01 pm -
2 stops30h 39m
Deal found 9/4![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop16h 49m
Thu 11/1210:59 am -
2 stops31h 41m
Deal found 9/5![Multiple Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:30 pm -
1 stop16h 49m
Sun 11/110:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:30 pm -
1 stop16h 49m
Wed 11/410:04 am -
2 stops8h 36m
Deal found 9/6![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/254:30 pm -
1 stop16h 49m
Mon 11/210:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm -
2 stops37h 49m
Mon 11/210:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm -
2 stops37h 49m
Sun 11/110:59 am -
1 stop13h 17m
Deal found 9/6![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:26 pm -
1 stop14h 13m
Thu 11/512:01 pm -
2 stops30h 39m
Deal found 9/6![Multiple Airlines logo]()
$247
One-way flights from St. Louis to Key WestSearch for one-way flight options from St. Louis to Key West. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from St. Louis to Key West. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:35 pm -
2 stops37h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:35 pm -
3 stops37h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$154
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:30 am -
1 stop5h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/129:27 am -
1 stop5h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![American Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:20 pm -
3 stops37h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:32 am -
2 stops9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![American Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/186:00 am -
2 stops9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![American Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:00 pm -
1 stop4h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$603
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:30 am -
2 stops9h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![American Airlines logo]()
$628
Find flight deals from St. Louis to Key West
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Key West (EYW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $227 (Kiwi.com) |
One-way from | $93 (Kiwi.com) |
Popular in | October |
Cheapest in | December |
Average price | $551 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from St. Louis to Key West that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Mon 10/26
6:35 pm-9:24 am
2 stops37h 49m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$93
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Mon 10/12
6:35 pm-9:24 am
3 stops37h 49m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$155
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Mon 10/26
8:30 am-3:29 pm
1 stop5h 59m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$319
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Fri 12/18
7:18 am-5:11 pm
1 stop8h 53m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$319
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Sat 12/5
12:36 pm-8:02 pm
1 stop6h 26m
Key West
Tue 12/8
7:25 am-1:28 pm
1 stop7h 03m
$351
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Fri 12/18
6:00 am-4:04 pm
2 stops9h 04m
Key West
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$423
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Tue 9/22
12:00 pm-8:00 pm
1 stop7h 00m
Key West
Sat 9/26
7:40 am-12:32 pm
1 stop5h 52m
$423
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Mon 10/26
7:30 am-3:29 pm
1 stop6h 59m
Key West
Wed 11/4
4:10 pm-11:24 pm
1 stop8h 14m
$426
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Sat 11/28
7:05 am-12:59 pm
1 stop4h 54m
Key West
Wed 12/2
7:25 am-1:28 pm
1 stop7h 03m
$441
St. LouisKey West
STL Lambert-St Louis - EYW Key West
STLEYW
Lambert-St Louis
Sat 10/10
2:25 pm-8:01 pm
1 stop4h 36m
Key West
Sat 10/17
6:11 pm-11:54 pm
1 stop6h 43m
$479
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Key West
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Key West in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Key West flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Key West flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Key West flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Key West
Have a flexible travel schedule? Discover the best time to fly to Key West from St. Louis with our price prediction graph.
STL-EYW
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Key West
How far ahead should I book a flight from St. Louis to Key West?
Booking 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Key West. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from St. Louis to Key West?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Key West (average of $317). Flying from St. Louis to Key West in October is currently the most expensive (average of $656). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Key West?
Airfare is below average for this route at the moment.
St. Louis to Key West flights typically cost between $457 and $704 in October.The cheapest round-trip price found within the last 5 days was $227 on Multiple Airlines (Oct 26-Nov 2).
Reviews of airlines servicing Key West
Get insights into the airlines that provide service to Key West. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key West. Reviews last updated September 9, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from St. Louis to Key West by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Overall
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Key West
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Other flights to Key West
Explore flights to Key West departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
St. Louis and Key West flights
Browse other St. Louis and Key West flight options. Last updated on September 9, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from St. Louis to Key West
Discover the top 3 airlines that operate flights from St. Louis to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$222 | Average$443 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$242 | Average$446 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$418 | FlexibilityNo cancel fee | On-time69% |