$62 Find Cheap Flights from St. Louis to Florida Keys - Compare and Save

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 Florida Keys departing on 8/31. 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
1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to Florida Keys

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Miami
Miami1 stop$272
Key West
Key West2 stops$241
Miami
Miami1 stop$272
Key West
Key West2 stops$241

Book Cheap St. Louis to Florida Keys Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Florida Keys 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Florida Keys

Sun, Sep 6 - Thu, Sep 10
Multiple Airlines Logo
6:17 pm - 11:27 am
STL
-
EYW
16h 10m
2 stops
Multiple Airlines Logo
10:59 am - 5:54 pm
EYW
-
STL
7h 55m
1 stop
$241Multiple Airlines
Sun, Sep 6 - Thu, Sep 10
Multiple Airlines Logo
6:17 pm - 11:27 am
STL
-
EYW
16h 10m
2 stops
Multiple Airlines Logo
10:59 am - 5:54 pm
EYW
-
STL
7h 55m
1 stop
$248Multiple Airlines
Wed, Nov 4 - Sat, Nov 14
Southwest Logo
6:15 pm - 9:55 pm
STL
-
MIA
2h 40mnonstop
Southwest Logo
7:00 am - 2:20 pm
MIA
-
STL
8h 20m
1 stop
$271Southwest
Sat, Nov 7 - Sat, Nov 14
Southwest Logo
5:05 pm - 8:45 pm
STL
-
MIA
2h 40mnonstop
Southwest Logo
12:20 pm - 7:15 pm
MIA
-
STL
7h 55m
1 stop
$271Southwest
Mon, Aug 24 - Mon, Aug 31
American Airlines Logo
11:35 am - 3:29 pm
STL
-
MIA
2h 54mnonstop
American Airlines Logo
8:41 am - 10:45 am
MIA
-
STL
3h 04mnonstop
$273American Airlines
Sun, Oct 11 - Fri, Oct 16
Frontier Logo
10:35 am - 6:22 pm
STL
-
MIA
6h 47m
1 stop
Frontier Logo
7:20 am - 7:15 pm
MIA
-
STL
12h 55m
1 stop
$273Frontier
Mon, Oct 19 - Fri, Oct 23
Frontier Logo
8:34 pm - 12:14 pm
STL
-
MIA
14h 40m
2 stops
Frontier Logo
7:27 pm - 9:40 am
MIA
-
STL
15h 13m
1 stop
$273Frontier
Sat, Sep 5 - Mon, Sep 7
American Airlines Logo
11:35 am - 3:29 pm
STL
-
MIA
2h 54mnonstop
American Airlines Logo
8:41 am - 10:45 am
MIA
-
STL
3h 04mnonstop
$274American Airlines
Tue, Sep 8 - Fri, Sep 11
Delta Logo
1:40 pm - 9:52 pm
STL
-
MIA
7h 12m
1 stop
Delta Logo
8:25 am - 12:32 pm
MIA
-
STL
5h 07m
1 stop
$287Delta
Wed, Sep 23 - Tue, Sep 29
Delta Logo
10:05 am - 5:20 pm
STL
-
MIA
6h 15m
1 stop
Delta Logo
10:30 am - 3:54 pm
MIA
-
STL
6h 24m
1 stop
$289Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Florida Keys flights

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

What is the cheapest time of day to fly to Florida Keys?

The average price for all round-trip flights from St. Louis to Florida Keys depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Florida Keys is generally in the afternoon, when round-trip flights cost $488 on average. Morning departures are around 5% cheaper than evening flights, on average. The most expensive time of day to fly to Florida Keys is generally in the evening, which is peak travel time and where the average cost of a ticket is $585.

Can I save money by flying with a layover from St. Louis to Florida Keys?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $462, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from St. Louis to Florida Keys?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Florida Keys, 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 Florida Keys is September, when tickets cost $328 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $473 and $454 respectively.

What’s the cheapest day of the week to fly from St. Louis to Florida Keys?

The average price of all round-trip flights from St. Louis to Florida Keys clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to Florida Keys, look for departures on Saturdays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from Florida Keys, Thursday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from St. Louis to Florida Keys?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Florida Keys, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Florida Keys, you should book around 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low season

August

Cheapest flight

$62
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from St. Louis to Miami

FAQs - booking Florida Keys flights

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

    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 Florida Keys.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Florida Keys 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 Florida Keys?

    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 from St. Louis to Florida Keys with an airline and back with another airline.

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

    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 from St. Louis to Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Florida Keys

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Miami $179 one-way - $381 round-trip

Everything you need to know for your flight to Florida Keys

Information on your arrival and departure airports