Cheap flights from St. Louis, MO to Key West, FL
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Key West
Most popular airline | United Airlines |
---|
Search by stops
- Nonstop
- Up to 1 stop
- Up to 2 stops
Search by carrier
Search by price
Search by departure date
Sorry, we couldn't find any results
Sorry, we couldn't find any results
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
The most popular airline for this route is United Airlines. St. Louis and Key West have 13 direct flights per week.
Check-in for a flight from St. Louis to Key West
Name | Carrier code | IATA Code | Passport needed during booking | |
---|---|---|---|---|
United Airlines | UAL | UA | Yes |
Online check-in is not available for these airlines.
Weather in Key West
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 22°C | 20°C |
February | 23°C | 21°C |
March | 23°C | 22°C |
April | 25°C | 24°C |
May | 26°C | 25°C |
June | 28°C | 27°C |
July | 29°C | 28°C |
August | 29°C | 28°C |
September | 29°C | 28°C |
October | 27°C | 26°C |
November | 25°C | 24°C |
December | 24°C | 22°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from St. Louis
- Flights from St. Louis to Las Vegas
- Flights from St. Louis to Los Angeles
- Flights from St. Louis to Denver
- Flights from St. Louis to Orlando
- Flights from St. Louis to Atlanta
- Flights from St. Louis to Minneapolis
- Flights from St. Louis to San Diego
- Flights from St. Louis to San Francisco
- Flights from St. Louis to London
- Flights from St. Louis to Phoenix
- Flights from St. Louis to Seattle
- Flights from St. Louis to Houston
- Flights from St. Louis to Sacramento
- Flights from St. Louis to New York
- Flights from St. Louis to Cancún
- Flights from St. Louis to Washington, D.C.
- Flights from St. Louis to Fort Lauderdale
- Flights from St. Louis to Oakland
- Flights from St. Louis to Tampa
- Flights from St. Louis to Paris
Flights to Key West
- Flights from Philadelphia to Key West
- Flights from Tampa to Key West
- Flights from Washington, D.C. to Key West
- Flights from Denver to Key West
- Flights from Orlando to Key West
- Flights from Atlanta to Key West
- Flights from Detroit to Key West
- Flights from Chicago to Key West
- Flights from Fort Lauderdale to Key West
- Flights from New York to Key West
- Flights from Cleveland to Key West
- Flights from Pittsburgh to Key West
- Flights from Minneapolis to Key West
- Flights from Boston to Key West
- Flights from Raleigh to Key West
- Flights from Las Vegas to Key West
- Flights from Columbus to Key West
- Flights from Dallas to Key West
- Flights from Atlantic City to Key West
- Flights from Hartford to Key West
Popular routes
- Flights from Cleveland to Entebbe
- Flights from Kansas City to Guayaquil
- Flights from Pittsburgh to Beirut
- Flights from New Orleans to Tehran
- Flights from Santa Ana to Casablanca
- Flights from Portland to Abuja
- Flights from Saint Thomas to Nairobi
- Flights from New York to Atlanta
- Flights from Key West to St. Louis
- Flights from Ontario to Sydney
- Flights from Fresno to Sofia
- Flights from New York to Miami
- Flights from Las Vegas to Chicago