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Cheap flights from Idaho to Key West from $243

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Key West departing on 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Idaho to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:45 am - 10:58 pm
BOI
-
EYW
14h 13m
2 stops
American Airlines Logo
11:56 am - 10:54 pm
EYW
-
BOI
12h 58m
2 stops
$487American Airlines
Wed, May 6 - Wed, May 13
American Airlines Logo
3:50 pm - 11:21 am
GEG
-
EYW
16h 31m
2 stops
American Airlines Logo
1:28 pm - 11:02 pm
EYW
-
GEG
12h 34m
2 stops
$487American Airlines
Wed, Sep 16 - Sat, Sep 19
American Airlines Logo
6:45 am - 10:58 pm
BOI
-
EYW
14h 13m
2 stops
American Airlines Logo
2:29 pm - 10:54 pm
EYW
-
BOI
10h 25m
1 stop
$513American Airlines
Wed, May 6 - Wed, May 13
American Airlines Logo
6:09 am - 5:02 pm
BOI
-
EYW
8h 53m
1 stop
American Airlines Logo
3:58 pm - 11:41 pm
EYW
-
BOI
9h 43m
2 stops
$532American Airlines
Fri, May 8 - Fri, May 15
American Airlines Logo
6:09 am - 5:02 pm
BOI
-
EYW
8h 53m
1 stop
American Airlines Logo
2:29 pm - 10:54 pm
EYW
-
BOI
10h 25m
1 stop
$589American Airlines
Fri, May 8 - Fri, May 15
American Airlines Logo
6:26 pm - 11:16 am
BOI
-
EYW
14h 50m
2 stops
American Airlines Logo
2:29 pm - 10:54 pm
EYW
-
BOI
10h 25m
1 stop
$594American Airlines
Fri, May 8 - Fri, May 15
American Airlines Logo
6:09 am - 5:02 pm
BOI
-
EYW
8h 53m
1 stop
American Airlines Logo
2:29 pm - 10:54 pm
EYW
-
BOI
10h 25m
1 stop
$601American Airlines
Fri, May 8 - Fri, May 15
Delta Logo
11:35 pm - 10:46 am
BOI
-
EYW
9h 11m
1 stop
Delta Logo
2:40 pm - 10:28 pm
EYW
-
BOI
9h 48m
1 stop
$604Delta
Thu, Apr 23 - Mon, Apr 27
American Airlines Logo
6:00 am - 5:02 pm
BOI
-
EYW
9h 02m
1 stop
American Airlines Logo
2:29 pm - 10:54 pm
EYW
-
BOI
10h 25m
1 stop
$607American Airlines
Wed, May 6 - Wed, May 13
Delta Logo
10:40 pm - 10:53 am
GEG
-
EYW
9h 13m
1 stop
Delta Logo
3:05 pm - 11:06 pm
EYW
-
GEG
11h 01m
2 stops
$609Delta
Tue, May 19 - Sat, May 23

United Airlines flights from Idaho to Key West

Our best United Airlines deals on Idaho to Key West flight tickets
United Airlines
May 2
GEG8:55 amSpokane
27h 12m
2 stops
EYW3:07 pmKey West
May 6
EYW4:47 pmKey West
21h 29m
2 stops
GEG11:16 amSpokane
$831
United Airlines
May 2
GEG8:55 amSpokane
28h 07m
2 stops
EYW4:02 pmKey West
May 6
EYW2:49 pmKey West
33h 27m
2 stops
GEG9:16 pmSpokane
$878
United Airlines
May 2
GEG8:55 amSpokane
27h 12m
2 stops
EYW3:07 pmKey West
May 6
EYW4:47 pmKey West
25h 31m
2 stops
GEG3:18 pmSpokane
$896

American Airlines flights from Idaho to Key West

Our best American Airlines deals on Idaho to Key West flight tickets
American Airlines
May 6
BOI6:45 amBoise Air Term. Gowen Fld
14h 13m
2 stops
EYW10:58 pmKey West
May 13
EYW11:56 amKey West
12h 58m
2 stops
BOI10:54 pmBoise Air Term. Gowen Fld
$487
American Airlines
May 6
BOI6:45 amBoise Air Term. Gowen Fld
14h 13m
2 stops
EYW10:58 pmKey West
May 13
EYW2:29 pmKey West
10h 25m
1 stop
BOI10:54 pmBoise Air Term. Gowen Fld
$513
American Airlines
May 8
BOI6:09 amBoise Air Term. Gowen Fld
8h 53m
1 stop
EYW5:02 pmKey West
May 15
EYW3:58 pmKey West
9h 43m
2 stops
BOI11:41 pmBoise Air Term. Gowen Fld
$532

momondo 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, momondo users made 832,500 searches. Data last updated April 12, 2026.
Use the filters below to find and compare flights from Idaho to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Wed 5/6

6:45 am-10:58 pm

2 stops14h 13m

Key West

Wed 5/13

11:56 am-10:54 pm

2 stops12h 58m

$487

SpokaneKey West

GEG - EYW

GEGEYW

Spokane

Wed 9/16

3:50 pm-11:21 am

2 stops16h 31m

Key West

Sat 9/19

1:28 pm-11:02 pm

2 stops12h 34m

$487

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Wed 5/6

6:45 am-10:58 pm

2 stops14h 13m

Key West

Wed 5/13

2:29 pm-10:54 pm

1 stop10h 25m

$513
Quickest round-trip

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Fri 5/8

6:09 am-5:02 pm

1 stop8h 53m

Key West

Fri 5/15

3:58 pm-11:41 pm

2 stops9h 43m

$532

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Fri 5/8

6:09 am-5:02 pm

1 stop8h 53m

Key West

Fri 5/15

2:29 pm-10:54 pm

1 stop10h 25m

$589

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Fri 5/8

6:26 pm-11:16 am

2 stops14h 50m

Key West

Fri 5/15

2:29 pm-10:54 pm

1 stop10h 25m

$594

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Fri 5/8

6:09 am-5:02 pm

1 stop8h 53m

Key West

Fri 5/15

2:29 pm-10:54 pm

1 stop10h 25m

$601

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Thu 4/23

11:35 pm-10:46 am

1 stop9h 11m

Key West

Mon 4/27

2:40 pm-10:28 pm

1 stop9h 48m

$604

BoiseKey West

BOI - EYW

BOIEYW

Boise Air Term. Gowen Fld

Wed 5/6

6:00 am-5:02 pm

1 stop9h 02m

Key West

Wed 5/13

2:29 pm-10:54 pm

1 stop10h 25m

$607

SpokaneKey West

GEG - EYW

GEGEYW

Spokane

Tue 5/19

10:40 pm-10:53 am

1 stop9h 13m

Key West

Sat 5/23

3:05 pm-11:06 pm

2 stops11h 01m

$609

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Idaho to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Idaho to Key West?

American Airlines is the most popular carrier operating from Idaho to Key West

Cheap Idaho to Key West flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Key West

Fastest flight time

8h 02m

Direct flights

None
The fastest flight from Idaho to Key West takes 8h 02m
There are no direct flights from Idaho to Key West. There are no popular flight routes from Idaho to Key West.
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Frequently asked questions about flying from Idaho to Key West

  • When did momondo last update prices for flights from Idaho to Key West Airport?

    Prices for flights from Idaho to Key West Airport refresh daily.

  • How many operators does momondo search for flights from Idaho to Key West Airport?

  • How old do you have to be to fly from Idaho to Key West Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The required travel and health documents for your Key West Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Key West Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Key West

Compare and see reviews for airlines that fly from Idaho to Key West with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $308Free CancellationRating
7.1
11,570 reviews
Search American Airlines flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Key West?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho to Key West. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Idaho to Key West with flexible booking policies on momondo?

All flight searches from Idaho to Key West on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho to Key West?

momondo provides multiple filters to help you find the best flight to Key West from Idaho. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Idaho to Key West right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Key West from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Key West trip

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