The cheapest times to fly from EYW to SDF are

  • May 21st to June 10th
  • June 25th to November 11th (except the weeks of July 2nd, October 8th, and October 22nd)
  • December 24th to February 4th (except the week of January 1st)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from EYW to SDF is early to mid September. Prices can be as high as $921 for Sunday flights during early April, or as low as $237 for Tuesday flights around early to mid September.


When to Fly to Louisville

Flying from Key West, FL (EYW) to Louisville, KY (SDF) will usually cost between $266 to $648 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $283. Due to high demand the most expensive time to fly is early April, with an average price of $541. Planning your trip to low-cost times can easily save you $259 on economy flights and even more on first-class flights. Generally, any price below $408 can be considered a good price for a round-trip EYW to SDF flight.

See below for a graph of average weekly prices for the EYW to SDF route. All prices are for round-trip tickets in USD.

EYW to SDF Flight Prices

Compared to other flights, the EYW to SDF flight is much cheaper than the average and costs less than the average flight leaving from Key West. The average price per mile (for a direct flight) is $0.26, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $210 (39%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $324. Return trip prices are from the SDF to EYW flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from EYW to SDF can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 44 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from EYW to SDF? We’ve got answers.

Which airlines fly this route?

You can find 3 major airlines flying this route most often: American, Delta, United, and potentially more during busy seasons.

How far away is it from Louisville International-Standiford Field Airport to Key West International Airport?

The distance between the two airports is roughly 969 miles or 1559 kilometers.

How long does it take to fly from EYW to SDF?

The real-world flight time for a nonstop EYW to SDF flight is about 2 hour 44 minutes.

How many flights go between Key West, FL and Louisville, KY?

It depends on the day of the week and the date, but a typical day might have around 27 available flights from EYW to SDF.


Airport Location Info


Departing Airport

Origination codeEYW
Origination airport nameKey West International Airport
CityKey West, FL
Countrythe United States

Return Airport

Destination codeSDF
Destination airport nameLouisville International-Standiford Field Airport
CityLouisville, KY
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.