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STL - EYW

$103 Find cheap flights from St. Louis to Key West

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Key West departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to Key West

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Key West, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Key West, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Key West that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:19 am - 2:14 pmSTL-EYW
5h 55m1 stop
12:53 pm - 5:23 pmEYW-STL
5h 30m1 stop
$195American Airlines
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Wed, Sep 18 - Tue, Oct 1
8:01 am - 4:24 pmSTL-EYW
7h 23m1 stop
12:05 pm - 4:51 pmEYW-STL
5h 46m1 stop
$198American Airlines
Find Deal
Wed, Jun 19 - Wed, Jun 26
7:19 am - 2:14 pmSTL-EYW
5h 55m1 stop
1:46 pm - 7:30 pmEYW-STL
6h 44m2 stops
$200American Airlines
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Wed, Sep 18 - Tue, Oct 1
9:05 am - 4:43 pmSTL-EYW
6h 38m1 stop
1:46 pm - 10:09 pmEYW-STL
9h 23m2 stops
$202American Airlines
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Wed, Sep 4 - Sat, Sep 7
7:19 am - 6:59 pmSTL-EYW
10h 40m2 stops
1:46 pm - 7:30 pmEYW-STL
6h 44m2 stops
$205American Airlines
Find Deal
Wed, Sep 18 - Tue, Oct 1
6:00 am - 11:47 amSTL-EYW
4h 47m1 stop
12:42 pm - 4:20 pmEYW-STL
4h 38m1 stop
$217Delta
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Wed, Sep 4 - Sat, Sep 7
6:00 am - 1:35 pmSTL-EYW
6h 35m1 stop
7:23 am - 11:42 amEYW-STL
5h 19m1 stop
$227Delta
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Tue, Jul 16 - Sat, Jul 20
6:02 am - 2:09 pmSTL-EYW
7h 07m1 stop
11:45 am - 4:22 pmEYW-STL
29h 37m2 stops
$473United Airlines
Find Deal
Wed, Aug 28 - Mon, Sep 2
4:31 pm - 3:28 pmSTL-EYW
21h 57m3 stops
11:34 am - 9:39 amEYW-STL
23h 05m2 stops
Wed, Sep 18 - Mon, Sep 23
8:58 am - 2:35 pmSTL-EYW
28h 37m2 stops
11:20 am - 10:17 pmEYW-STL
11h 57m2 stops
$490United Airlines
Find Deal
Mon, Jul 1 - Fri, Jul 5

Flights from St. Louis to Key West - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Key West to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Key West?

The average price of all flights from St. Louis to Key West clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Key West on a Friday and more expensive on a Saturday. On your return trip to St. Louis, you should consider flying back on a Monday, and avoid Fridays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Key West, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Key West is January, where tickets cost $367 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $572 and $565 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Key West, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Key West, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 52 days before departure.

Which airlines provide the cheapest flights from St. Louis to Key West?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Key West found on KAYAK was with American Airlines for $103. American Airlines proposed a round-trip connection from $195 and Delta from $217.

Good to know

Low season

September

High season

March

Cheapest flight

$103
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from St. Louis to Key West

When to book flights from St. Louis to Key West

Are your dates flexible? Find out the best times to travel from St. Louis to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Key West

  • What is the cheapest flight from St. Louis to Key West?

    In the last 3 days, the lowest price for a flight from St. Louis to Key West was $103 for a one-way ticket and $195 for a round-trip.

  • Do I need a passport to fly between St. Louis and Key West?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from St. Louis to Key West?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Key West?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Key West, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Key West from St. Louis?

    Charlotte is the most popular layover city among KAYAK users traveling from St. Louis to Key West.

  • Which is the best airline for flights from St. Louis to Key West, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Key West are Delta and United Airlines. With an average price for the route of $522 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $541 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Key West?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Key West.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Key West?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Key West from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Key West?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Key West with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and EYW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Key West?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Key West from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from St. Louis to Key West

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Key West. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Key West? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
8.6Crew
8.2Boarding
8.0Entertainment
7.9Comfort
7.4Food
Airline reviews

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

2.0 MediocreNairan, May 2024JFK - FLL
Read more about Delta reviews

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

They did a fine job. Can't wait to use Delta in the future.

Seat back monitors and outlets were dead and not working.

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Boarding super slow with people allowed to linger in aisles

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

I liked everything about the flight. The service was excellent!

Delayed a day due to snow storm. Was upgraded. That kind of made up for significant delays from FLL to COS with no compensation or acknowledgement.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

It was a good flight. Of course it was full, but it went well.

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

We are gluten free, there were not any available complimentary gluten free options.

Flight delayed 3 times. We were directed to go to a gate across from our gate. The plane wasn't there yet so we had to wait for it to arrive, then deplane everyone and then wait again for the plane to be cleaned. After 45 minuites we were allowed on the plane. The first plane had mechanical issues. The 2nd plane must have had bathroom issues because we did not have any food service whatsoever. No snack or beverage. That made for a long time not to have anything considering that we had just made it to the original gate and we had no time to stop to get food or a drink. Then we didn't want to leave the gate to get food because we wouldn't know how much longer the delay would be. Then the next gate change. Had we been told that the total time would have been aprox 45 min later we would have left to get food and a beverage. We had to wait again for the okay to the pilot to take off so we were on the runway for another 20 min. Overall, we were delayed over 2 hours which felt like 4 hours.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Book cheap flights from St. Louis to Key West

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Key West found on KAYAK in the last 72 hours.
10/2Wed
2 stopsAmerican Airlines
9h 10mSTL-EYW
$103
10/2Wed
1 stopDelta
4h 28mSTL-EYW
$108
6/8Sat
2 stops
20h 52mSTL-EYW
$248
6/8Sat
3 stops
27h 40mSTL-EYW
$257
11/16Sat
2 stopsUnited Airlines
21h 45mSTL-EYW
$258
7/18Thu
1 stopAmerican Airlines
5h 47mSTL-EYW
$279
6/22Sat
1 stopDelta
5h 50mSTL-EYW
$280
6/23Sun
2 stopsAmerican Airlines
7h 40mSTL-EYW
$284
7/19Fri
2 stopsAmerican Airlines
11h 00mSTL-EYW
$285
6/6Thu
2 stopsUnited Airlines
31h 25mSTL-EYW
$390

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Last minute flights from St. Louis to Key West

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Key West that are departing in the next 10 days.
6/1Sat
multi-stopAmerican Airlines
7h 48mSTL-EYW
6/5Wed
multi-stopAmerican Airlines
5h 02mEYW-STL
$342
6/1Sat
multi-stopAmerican Airlines
9h 13mSTL-EYW
6/5Wed
multi-stopAmerican Airlines
5h 02mEYW-STL
$349
6/1Sat
multi-stopAmerican Airlines
7h 48mSTL-EYW
6/5Wed
multi-stopAmerican Airlines
8h 04mEYW-STL
$351
6/4Tue
multi-stopDelta
4h 50mSTL-EYW
6/8Sat
multi-stopDelta
6h 43mEYW-STL
$354
6/1Sat
multi-stopAmerican Airlines
7h 48mSTL-EYW
6/5Wed
multi-stopAmerican Airlines
7h 16mEYW-STL
$356
6/1Sat
multi-stopAmerican Airlines
8h 10mSTL-EYW
6/3Mon
multi-stopAmerican Airlines
7h 13mEYW-STL
$358
6/1Sat
multi-stopDelta
5h 47mSTL-EYW
6/4Tue
multi-stopDelta
5h 43mEYW-STL
$647
6/1Sat
multi-stopUnited Airlines
7h 01mSTL-EYW
6/4Tue
multi-stopUnited Airlines
11h 17mEYW-STL
$650
6/1Sat
multi-stopUnited Airlines
10h 40mSTL-EYW
6/6Thu
multi-stopUnited Airlines
7h 24mEYW-STL
$751
6/1Sat
multi-stopDelta
9h 42mSTL-EYW
6/5Wed
multi-stopDelta
7h 03mEYW-STL
$1,542

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St. Louis - Key West Flights

Departure:

St. Louis (STL)United States

Destination:

Key West (EYW)United States

Return flight deals:

Key West - St. Louis

Cabin classes: