What are the cheapest airlines flying from Boise to Key West round-trip?

Cheapflights users have booked flights from Boise to Key West round-trip from $442. Other airlines that can offer you cheap pricing are American Airlines, from $476, and United Airlines, from $827. You may be able to fly from Boise to Key West for 39% less than the average price by searching for these airlines.

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

Currently, August is the cheapest month in which you can book a flight from Boise to Key West (average of $328). Flying from Boise to Key West in March is currently the most expensive (average of $492). 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.

What is the cheapest day to fly from Boise to Key West?

Travelers seeking maximum savings on their Boise to Key West flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

What is the cheapest day to fly round-trip from Boise to Key West?

Users have found that flying from Boise to Key West on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Boise to Key West?

Flights from Boise to Key West lean towards being more expensive in May. Prices are generally better when you fly from Boise to Key West in August, with the cheapest ticket starting at $308.

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

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

How can I find direct flights from Boise to Key West?

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

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

Yes. Cheapflights offers flight deals from Boise 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.

$442+ Flights from Boise to Key West

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Cheap flight deals from Boise to Key West

Round-trip from	$442 (Delta)
Popular in	May
Cheapest in	August
Average price	$598

From Boise Air Term. Gowen Fld to Key West

Search Deals

Highest demand for flights based on searches. 26% potential increase in price ($264 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 10% potential price decrease ($67 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Boise to Key West

Cheapest flights from Boise to Key West
Explore the most affordable flight options available from Boise to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Sat 8/235:30 amBOI - EYW

2 stops9h 42mDelta

Wed 8/277:00 amEYW - BOI

1 stop7h 35mDelta

Deal found 7/28

$442

Tue 8/127:00 amBOI - EYW

1 stop7h 22mAmerican Airlines

Sat 8/163:59 pmEYW - BOI

1 stop7h 44mAmerican Airlines

Deal found 7/28

$476

Thu 8/216:06 pmBOI - EYW

2 stops20h 45mMultiple Airlines

Sun 8/2410:02 amEYW - BOI

3 stops33h 09mMultiple Airlines

Deal found 7/28

$665

Mon 9/152:13 pmBOI - EYW

2 stops21h 48mUnited Airlines

Fri 9/193:50 pmEYW - BOI

3 stops21h 41mUnited Airlines

Deal found 7/28

$827

Best flights from Boise to Key West
Discover carefully curated flight deals from Boise to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Sat 8/235:30 amBOI - EYW

2 stops9h 42mDelta

Wed 8/277:00 amEYW - BOI

1 stop7h 35mDelta

Deal found 7/28

$442

Tue 8/127:00 amBOI - EYW

1 stop7h 22mAmerican Airlines

Sat 8/163:59 pmEYW - BOI

1 stop7h 44mAmerican Airlines

Deal found 7/28

$476

Thu 8/216:06 pmBOI - EYW

2 stops20h 45mMultiple Airlines

Sun 8/2410:02 amEYW - BOI

3 stops33h 09mMultiple Airlines

Deal found 7/28

$665

Mon 9/152:13 pmBOI - EYW

2 stops21h 48mUnited Airlines

Fri 9/193:50 pmEYW - BOI

3 stops21h 41mUnited Airlines

Deal found 7/28

$827

Last-minute flights from Boise to Key West
Discover last-minute flight deals from Boise to Key West. Data last updated July 29, 2025 and is based on user searches.

Tue 8/127:00 amBOI - EYW

1 stop7h 22mAmerican Airlines

Sat 8/163:59 pmEYW - BOI

1 stop7h 44mAmerican Airlines

Deal found 7/28

$476

Tue 8/1210:50 amBOI - EYW

2 stops24h 22mUnited Airlines

Sat 8/162:08 pmEYW - BOI

3 stops23h 35mUnited Airlines

Deal found 7/28

$1,076

Thu 8/216:06 pmBOI - EYW

2 stops20h 45mMultiple Airlines

Sun 8/2410:02 amEYW - BOI

3 stops33h 09mMultiple Airlines

Deal found 7/28

$665

Sat 8/235:30 amBOI - EYW

2 stops9h 42mDelta

Wed 8/277:00 amEYW - BOI

1 stop7h 35mDelta

Deal found 7/28

$442

Fly from

Fly to

Route

Depart

Return

Price

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Sat 8/23

5:30 am-5:12 pm

2 stops9h 42m

Key West

Wed 8/27

7:00 am-12:35 pm

1 stop7h 35m

$442

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Tue 8/12

7:00 am-4:22 pm

1 stop7h 22m

Key West

Sat 8/16

3:59 pm-9:43 pm

1 stop7h 44m

$476

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Thu 8/21

6:06 pm-4:51 pm

2 stops20h 45m

Key West

Sun 8/24

10:02 am-5:11 pm

3 stops33h 09m

$665

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Mon 9/15

2:13 pm-2:01 pm

2 stops21h 48m

Key West

Fri 9/19

3:50 pm-11:31 am

3 stops21h 41m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Boise to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Boise 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 Boise to Key West

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

When flying from Boise 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.

Reviews of airlines servicing Key West

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Boise to Key West. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,977 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,899 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,977 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Boise to Key West round-trip?
Cheapflights users have booked flights from Boise to Key West round-trip from $442. Other airlines that can offer you cheap pricing are American Airlines, from $476, and United Airlines, from $827. You may be able to fly from Boise to Key West for 39% less than the average price by searching for these airlines.
Can I find deals for flights from Boise to Key West that include hotel bookings?
Yes. In addition to deals on Boise to Key West flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boise to Key West?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Key West.
Can I find deals for business class flights from Boise to Key West?
Yes. Cheapflights offers flight deals from Boise 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 Boise to Key West?
Currently, August is the cheapest month in which you can book a flight from Boise to Key West (average of $328). Flying from Boise to Key West in March is currently the most expensive (average of $492). 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

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Other flights to Key West

Top airline flying from Boise to Key West

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$308	Average$608	FlexibilityNo cancel fee	On-time71%

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$442+ Cheap flights from Boise to Key West (BOI - 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boise to Key West with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boise to Key West

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Boise to Key West

Cheapest flights from Boise to Key WestExplore the most affordable flight options available from Boise to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Boise to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boise to Key West that are best for you.

Best time to book a flight from Boise to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Boise with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from Boise 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 July 29, 2025.

Reviews of airlines servicing Key West

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Boise to Key West. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boise 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 are the cheapest airlines flying from Boise to Key West round-trip?

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

How can I find direct flights from Boise to Key West?

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

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

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 Boise to Key West

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Boise to Key West

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Boise to Key West
Explore the most affordable flight options available from Boise to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.