Cheap Flights from St. Louis to Key West

Featured airlines

Lufthansa
Aer Lingus
Stobart Air
British Airways
American Airlines
Air France
Virgin Atlantic
Iberia
easyJet
    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 15% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at €98 for one-way flights and €223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€223 Return, found 1 day ago
€223
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €223 found 1 day ago
American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€298 Return, found 1 day ago
€298
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €298 found 1 day ago
American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€316 Return, found 1 day ago
€316
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €316 found 1 day ago
American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€330 Return, found 1 day ago
€330
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €330 found 1 day ago
American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€344 Return, found 1 day ago
€344
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €344 found 1 day ago
American Airlines
Sat, 14 Dec - Fri, 20 Dec
STL
St. Louis
EYW
Key West
€364 Return, found 1 day ago
€364
Return
found 1 day ago
Select American Airlines flight, departing Sat, 14 Dec from St. Louis to Key West, returning Fri, 20 Dec, priced at €364 found 1 day ago
*Available to Expedia members.