HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key West

$359+ Cheap flights from Idaho to Key West (EYW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — EYW
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Key West with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to Key West

Keep the following information in mind while searching for Idaho to Key West flight deals. Data was last updated September 17, 2025.

Round-trip from

$359
(American Airlines)

Popular in

May

Cheapest in

August
From Idaho to Key West
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($63 potential savings vs. average RT price).
Search Deals

Find flight deals from Idaho to Key West

Cheapest flights from Idaho to Key West
Explore the most affordable flight options available from Idaho to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:39 amBOI - EYW
2 stops13h 39mAmerican Airlines
Fri 1/93:49 pmEYW - BOI
1 stop7h 29mAmerican Airlines
Deal found 9/15$379
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:30 pmGEG - EYW
2 stops14h 25mDelta
Wed 10/17:00 amEYW - GEG
1 stop7h 22mDelta
Deal found 9/16$459
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:00 amBOI - EYW
1 stop7h 18mAmerican Airlines
Sun 11/22:39 pmEYW - BOI
1 stop9h 30mAmerican Airlines
Deal found 9/16$512
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:58 pmGEG - EYW
1 stop8h 57mDelta
Mon 10/61:57 pmEYW - GEG
2 stops13h 02mDelta
Deal found 9/17$544
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:22 pmBOI - EYW
2 stops15h 51mAmerican Airlines
Sat 9/2011:25 amEYW - BOI
2 stops12h 23mAmerican Airlines
Deal found 9/14$569
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:00 amGEG - EYW
2 stops12h 07mDelta
Sat 10/47:00 amEYW - GEG
1 stop7h 22mDelta
Deal found 9/15$598
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:03 pmGEG - EYW
2 stops14h 52mDelta
Sat 10/1112:22 pmEYW - GEG
2 stops11h 43mDelta
Deal found 9/16$664
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:45 amBOI - EYW
2 stops12h 22mDelta
Sat 10/47:00 amEYW - BOI
1 stop7h 22mDelta
Deal found 9/15$690
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/412:35 pmGEG - EYW
2 stops19h 19mAmerican Airlines
Sat 10/1111:22 amEYW - GEG
2 stops10h 24mAmerican Airlines
Deal found 9/14$696
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:30 amSUN - EYW
2 stops10h 33mDelta
Tue 12/166:05 pmEYW - SUN
2 stops29h 59mDelta
Deal found 9/16$758
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amBOI - EYW
1 stop7h 13mAmerican Airlines
Sun 10/262:32 pmEYW - BOI
1 stop9h 52mAmerican Airlines
Deal found 9/15$1,145

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Idaho to Key West that are best for you.

Fly from

Idaho

Fly to

Key West

Route

Depart

Return

Price

SpokaneKey West

GEG - EYW

GEGEYW

Spokane

Tue 3/3

9:03 am-11:59 pm

2 stops11h 56m

Key West

Tue 3/10

1:23 pm-11:01 pm

2 stops12h 38m

$359

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Fri 12/12

6:39 am-10:18 pm

2 stops13h 39m

Key West

Fri 1/9

8:10 am-10:15 pm

2 stops16h 05m

$384

SpokaneKey West

GEG - EYW

GEGEYW

Spokane

Sat 9/27

5:30 pm-10:55 am

2 stops14h 25m

Key West

Wed 10/1

7:00 am-11:22 am

1 stop7h 22m

$459

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Tue 10/28

7:00 am-4:18 pm

1 stop7h 18m

Key West

Sun 11/2

2:39 pm-10:09 pm

1 stop9h 30m

$512

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Tue 9/30

5:45 am-8:07 pm

2 stops12h 22m

Key West

Sat 10/4

7:00 am-12:22 pm

1 stop7h 22m

$690

HaileyKey West

SUN - EYW

SUNEYW

Hailey Sun Valley-Friedman

Sat 12/13

7:30 am-8:03 pm

2 stops10h 33m

Key West

Tue 12/16

6:05 pm-10:04 pm

2 stops29h 59m

$758

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Mon 10/13

7:00 am-4:13 pm

1 stop7h 13m

Key West

Sun 10/26

2:32 pm-10:24 pm

1 stop9h 52m

$1,145

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Tue 9/30

6:35 am-6:59 pm

2 stops10h 24m

Key West

Sat 10/4

12:00 pm-9:48 pm

3 stops11h 48m

$1,277

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Wed 10/1

7:00 am-6:59 pm

2 stops9h 59m

Key West

Sun 10/5

7:31 pm-12:45 pm

2 stops19h 14m

$1,386

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Idaho to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Key West

What is the cheapest time of day to fly from ID to EYW?

Find hourly flight availability from Idaho to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Idaho to Key West, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Key West. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Key West from Idaho?

    If you book a flight to Key West from Idaho, you will be flying to Key West, which is the city’s only airport. Key West (EYW) is located 2.6 mi from the center of Key West.

  • How long is the flight from Idaho to Key West?

    Departing from Idaho to Key West will take you 11h 56m. The distance between Idaho and Key West is about 2517 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Idaho to Key West?

    Most travelers choose Boise Air Term. Gowen Fld - Key West, Spokane - Key West or Hailey Sun Valley-Friedman - Key West when deciding on the best route from Idaho to Key West.

  • Can I find deals for flights from Idaho to Key West that include hotel bookings?

    Yes. In addition to deals on Idaho to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Key West?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Key West.

  • Can I find deals for business class flights from Idaho to Key West?

    Yes. Cheapflights offers flight deals from Idaho to Key West by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to Key West?

    Currently, August is the cheapest month in which you can book a flight from Idaho to Key West (average of $328). Flying from Idaho to Key West in March is currently the most expensive (average of $491). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Key West

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
LaGuardia to Miami flights
Newark to Miami flights
Newark to Orlando flights
John F Kennedy Intl to Fort Lauderdale flights
LaGuardia to Orlando flights
Boston to Orlando flights
John F Kennedy Intl to West Palm Beach flights
Dulles Intl to Orlando flights
Dallas/Fort Worth to Orlando flights
Dulles Intl to Miami flights
Boston to Fort Lauderdale flights
Philadelphia to Orlando flights
O'Hare Intl to Orlando flights
Los Angeles to Orlando flights
Newark to West Palm Beach flights
Los Angeles to Miami flights
Reagan-National to Miami flights
Newark to Tampa flights
Baltimore to Fort Lauderdale flights
Dallas/Fort Worth to Miami flights
Reagan-National to Orlando flights
Baltimore to Orlando flights
John F Kennedy Intl to Tampa flights
Boston to Miami flights
Philadelphia to Fort Lauderdale flights
O'Hare Intl to Miami flights
Denver to Orlando flights
Seattle to Orlando flights
O'Hare Intl to Fort Lauderdale flights
Atlanta to Miami flights
Providence to Orlando flights
Hobby to Orlando flights
Minneapolis to Orlando flights
Cleveland to Orlando flights
Boston to Tampa flights
LaGuardia to West Palm Beach flights
Dallas/Fort Worth to Fort Lauderdale flights
Los Angeles to Fort Lauderdale flights
LaGuardia to Tampa flights
Baltimore to Miami flights
Philadelphia to Miami flights
Raleigh to Miami flights
Dulles Intl to Tampa flights
Detroit to Orlando flights
Detroit to Fort Lauderdale flights
Minneapolis to Miami flights

Top airline flying from Idaho to Key West

Discover the top airline that operate flights from Idaho to Key West. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$608FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.