Cheap flights from St. Louis to Key West (STL - EYW)

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The best prices from Lambert-St Louis to Key West are usually found in September or October, booked 54 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

How to find the cheapest flight from
St. Louis (STL) to Key West (EYW)

All the information you need to plan the best STL to EYW flight in 2022: compare St. Louis to Key West flight prices with the expected peak season, weather and rainfall in Key West.
STL - EYW
Price
$311 - $517
EYW
Temperature
69.8 - 84.2 °F
EYW
Rainfall
1.5 - 6.7 inches

Popular in

June

High demand for flights, 17% potential price rise

Cheapest in

September

Best time to find cheap flights, 27% potential price drop

Round-trip from

$311

From Lambert-St Louis to Key West

One-way from

$191

One-way flight from Lambert-St Louis to Key West

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from St. Louis to Key West (STL - EYW)?

One of the essential ways to save on airfare from St. Louis to Key West is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 95% on airfare.

How far in advance should I book a flight from St. Louis to Key West?

To save up to 43% on this flight, we recommend booking at least 54 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to Key West from $479 1-2 weeks out and tickets from $574 for flights departing within the next 72 hours.

What is the cheapest day to fly round-trip from St. Louis to Key West?

Flying to your destination on a Wednesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Key West. Check prices with Cheapflights to find a great deal for your trip.

What is the cheapest month to fly from St. Louis to Key West?

The best pricing can be found in the month of September. Prices to Key West from St. Louis average $428. You can even find prices in September for less than $428, as users have found deals to Key West from as low as $232. The month of June appears to be one of the more expensive times to travel to Key West from St. Louis. Flying in the targeted month can save you up to 20%.

Cheap flights from St. Louis to Key West in August, September 2022

The best prices found for STL to EYW flights for August, September
14 Sep - 17 Sep
$287pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
14 Sep - 17 Sep
$296pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
6 Sep - 10 Sep
$303pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Key West 2022 flight deals

Cheap flights to Key West from St. Louis found for this year
14 Sep - 17 Sep
$287pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
14 Sep - 17 Sep
$296pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
6 Sep - 10 Sep
$303pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis

Cheap American Airlines flights from St. Louis to Key West

13 Dec - 14 Dec
$375pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
EYW
Key West
EYW
Key West
American Airlines
 
1 STOP
STL
Lambert-St Louis
13 Dec - 14 Dec
$379pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
EYW
Key West
EYW
Key West
American Airlines
   
2 STOPS
STL
Lambert-St Louis
9 Nov - 16 Nov
$381pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
EYW
Key West
EYW
Key West
American Airlines
 
1 STOP
STL
Lambert-St Louis

Cheap Delta flights from St. Louis to Key West

13 Dec - 21 Mar
$378pp
STL
Lambert-St Louis
Delta
 
1 STOP
EYW
Key West
EYW
Key West
Delta
 
1 STOP
STL
Lambert-St Louis
13 Dec - 28 Dec
$448pp
STL
Lambert-St Louis
Delta
 
1 STOP
EYW
Key West
EYW
Key West
Delta
 
1 STOP
STL
Lambert-St Louis
9 Sep - 12 Sep
$458pp
STL
Lambert-St Louis
Delta
 
1 STOP
EYW
Key West
EYW
Key West
Delta
 
1 STOP
STL
Lambert-St Louis

Last minute flights from St. Louis to Key West

Late deals on round-trip flights to Key West from St. Louis, departing today and this week
24 Aug - 26 Aug
$399pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
24 Aug - 26 Aug
$423pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
24 Aug - 28 Aug
$466pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
EYW
Key West
EYW
Key West
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to Key West from St. Louis

The cheapest one-way flights from St. Louis to Key West
2:20 pm - 3:45 pm
Multiple Airlines
1 Stop
24h 25m
STL - EYW
Multiple Airlines
$191
Kiwi.com
7:50 am - 9:30 am
Multiple Airlines
1 Stop
24h 40m
STL - EYW
Multiple Airlines
$194
Kiwi.com
8:50 am - 3:45 pm
Multiple Airlines
1 Stop
5h 55m
STL - EYW
Multiple Airlines
$206
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Key West</span> flights.

Flight FAQs

From St. Louis to Key West

Which airlines flying from Lambert-St Louis to Key West have flexible cancellations due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to Key West have new flexible policies in place due to COVID-19. American Airlines, Delta, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from St. Louis to Key West for under $300 on Cheapflights?

Yes, there are multiple flights from St. Louis to Key West for under $300. The cheapest flight booked recently is on Multiple Airlines for just $287, but on average you can expect to pay $350.

Are there last-minute flights available from St. Louis to Key West for under $400?

There are currently 6+ open flights from St. Louis to Key West within the next 7 days for less than $400.

How popular is this St. Louis to Key West flight route?

Within the past month, 35 users have taken a look at flights from Lambert-St Louis to Key West.

What are the cheapest airlines flying from St. Louis to Key West round-trip?

Our cheapest airline available from St. Louis to Key West is American Airlines. Our recent data shows that you can find tickets from as low as $375 on this airline. An additional option worth looking into is Delta, starting at $378. Users have found that American Airlines is 12% cheaper than the other options available to this destination.

What are the most popular airlines that fly from St. Louis to Key West?

When booking a flight from St. Louis to Key West, you may want to consider flying on American Airlines, Delta or Juneyao Airlines as they are the most popular for this route.

What are the cheapest flights from St. Louis to Key West?

While on average a flight from St. Louis to Key West is generally $949, our data shows the cheapest flight currently is $161. When looking at the most popular route, (Lambert-St Louis - Key West), you can expect to pay $305 for that flight.

COVID Restrictions

View COVID Travel Restrictions for Key West, FL

Do I need a COVID test to fly to Key West from St. Louis?

Information is based on travel restrictions for travel to Key West within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Key West.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Key West.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Key West.

Do I need a test to fly back to St. Louis from Key West?

Returning to Lambert-St Louis from Key West

COVID-19 testing requirements
Visitors from Key West are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Key West are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Key West, FL

Alternative routes for St. Louis to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Lambert-St Louis to Key West

The chart below displays the airlines Cheapflights users traveling from St. Louis to Key West choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Juneyao Airlines
$16 $21 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

American Airlines
$239 $457 No cancel fee 71%
United Airlines
$283 $438 No cancel fee 69%
Delta
$305 $479 No cancel fee N/A
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