The cheapest times to fly from BOI to EYW are

  • January 1st to February 4th
  • February 19th to March 4th
  • April 9th to May 27th (except the week of May 7th)
  • August 6th to September 30th

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 BOI to EYW is mid to late August. Prices can be as high as $1512 for Sunday flights during late December, or as low as $307 for Tuesday flights around mid to late August.


When to Fly to Key West

Flying from Boise, ID (BOI) to Key West, FL (EYW) will usually cost between $426 to $943 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late August with an average ticket price of $411. Due to high demand the most expensive time to fly is late December, with an average price of $1080. Planning your trip to low-cost times can easily save you $669 on economy flights and even more on first-class flights. Generally, any price below $609 can be considered a good price for a round-trip BOI to EYW flight.

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

BOI to EYW Flight Prices

Compared to other flights, the BOI to EYW flight is cheaper than the average and costs less than the average flight leaving from Boise. The average price per mile (for a direct flight) is $0.16, which is far 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 $285 (35%) 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 $508. Return trip prices are from the EYW to BOI 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 BOI to EYW can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 12 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from BOI to EYW while comparing.

Destination alternative #1: Miami International Airport (MIA) in Miami, FL

  • 126 miles (203 km) away from EYW
  • Usually 24.14% less expensive than EYW
  • 1-layover flights available

See BOI to MIA flights

Destination alternative #2: Fort Lauderdale-Hollywood International Airport (FLL) in Fort Lauderdale, FL

  • 145 miles (233 km) away from EYW
  • Usually 22.17% less expensive than EYW
  • 1-layover flights available

See BOI to FLL flights

Destination alternative #3: Southwest Florida International Airport (RSW) in Fort Myers, FL

  • 137 miles (220 km) away from EYW
  • Usually 17.65% less expensive than EYW
  • 1-layover flights available

See BOI to RSW flights


Flight Hacking BOI to EYW

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from BOI to EYW — but Champion Traveler does!

Hack #1: Orlando, FL (BOI > MCO > EYW)

  • Price for both tickets: $600
  • Average savings: $10 (1.56%)

See BOI to MCO flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Alaska, American, Delta, Silver Airways, United, and potentially more during busy seasons.

How far away is it from Key West International Airport to Boise Air Terminal Airport?

The distance between the two airports is roughly 2343 miles or 3771 kilometers.

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

The real-world flight time for a nonstop BOI to EYW flight is about 5 hour 12 minutes.

How many flights go between Boise, ID and Key West, FL?

It depends on the day of the week and the date, but a typical day might have around 77 available flights from BOI to EYW.


Airport Location Info


Departing Airport

Origination code BOI
Origination airport name Boise Air Terminal Airport
City Boise, ID
Country the United States
Latitude 43.6
Longitude -116.2

Return Airport

Destination code EYW
Destination airport name Key West International Airport
City Key West, FL
Country the United States
Latitude 24.6
Longitude -81.8


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.