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

Popular airlines from Lambert-St. Louis International Airport (STL) to Key West Intl. Airport (EYW)

  • Be in the know

    Get alerts if flight prices drop or rise*
  • Book smarter

    Save up to 30% on select hotels after you book a flight*
  • Earn twice

    Earn your airline miles on top of our rewards

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.

Find the cheapest month to fly from St. Louis (STL) to Key West (EYW)

May is typically the cheapest month to fly

From CA $287 - CA $762 per traveller.

Frequently asked questions

How much is a flight from Lambert-St. Louis Intl. Airport (STL) to Key West Intl. Airport (EYW)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight between STL and EYW was . Cheap tickets don't last forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert Field to EYW?
This differs between airlines, as each has its own terms and conditions. Head to the Customer Service Portal, where you'll find instructions on how to cancel your flight online.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to Key West Intl. Airport (EYW) that have flexible change policies?
Flights from STL to Key West Intl. Airport (EYW) offering flexible change policies are available with many carriers. Simply use our "No change fees" filter while searching. You'll only need to cover the cost difference between flights, without any extra fees to worry about.
How many hours is the flight from Lambert-St. Louis Intl. Airport (STL) to EYW?
The flight time from Lambert Field to EYW is about 5 hours and 15 minutes. Put your headphones on, listen to a gripping podcast and your time in the air will fly by.
How far is the flight from STL to Key West Intl. Airport (EYW)?
Around 1,800 kilometres separates St. Louis and Key West, so pack some entertainment to keep you busy for a few hours. That juicy novel you haven't had time to start will be just the ticket.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Key West Intl. Airport (EYW)?
If you want to travel straight from Lambert-St. Louis Intl. Airport (STL) to Key West Intl. Airport, you'll need to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly between these airports.
Are Lambert-St. Louis Intl. Airport (STL) to EYW flight tickets cheaper when they're purchased at the last minute?
Tickets from STL to EYW are available up to a year prior to departure on Expedia. And although you may nab a fantastic last-minute deal, it's not something you should bank on. Also, booking your flights well in advance means you'll have more choices — and you can avoid ending up with the dreaded middle seat! We're constantly updating our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Key West Intl.
Distance
1763 km

Book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.