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Cheap flights from Montana to Key West from $245

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Key West departing on 6/1. 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 Montana to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:45 am - 10:36 pm
MSO
-
EYW
13h 51m
2 stops
American Airlines Logo
2:29 pm - 9:45 pm
EYW
-
MSO
9h 16m
1 stop
$557American Airlines
Wed, Apr 15 - Wed, Apr 22
American Airlines Logo
6:44 am - 4:55 pm
BZN
-
EYW
8h 11m
1 stop
American Airlines Logo
2:21 pm - 8:40 pm
EYW
-
BZN
8h 19m
1 stop
$605American Airlines
Tue, Jul 21 - Sun, Jul 26
American Airlines Logo
6:45 am - 10:36 pm
MSO
-
EYW
13h 51m
2 stops
American Airlines Logo
11:24 am - 9:45 pm
EYW
-
MSO
12h 21m
2 stops
$616American Airlines
Wed, Apr 15 - Wed, Apr 22
American Airlines Logo
6:44 am - 4:55 pm
BZN
-
EYW
8h 11m
1 stop
American Airlines Logo
11:26 am - 8:39 pm
EYW
-
BZN
11h 13m
2 stops
$638American Airlines
Mon, Aug 3 - Mon, Aug 10
Delta Logo
6:10 pm - 11:00 am
BTM
-
EYW
14h 50m
2 stops
Delta Logo
7:00 am - 4:55 pm
EYW
-
BTM
11h 55m
2 stops
$710Delta
Mon, Aug 3 - Thu, Aug 13
Delta Logo
6:10 pm - 11:00 am
BTM
-
EYW
14h 50m
2 stops
Delta Logo
7:00 am - 4:55 pm
EYW
-
BTM
11h 55m
2 stops
$730Delta
Tue, Aug 4 - Wed, Aug 12
Delta Logo
6:35 pm - 10:53 am
BZN
-
EYW
14h 18m
2 stops
Delta Logo
7:30 am - 1:09 pm
EYW
-
BZN
7h 39m
1 stop
$747Delta
Thu, May 7 - Mon, May 11
United Airlines Logo
10:15 am - 3:07 pm
BTM
-
EYW
26h 52m
2 stops
United Airlines Logo
4:00 pm - 10:30 pm
EYW
-
BTM
32h 30m
2 stops
$852United Airlines
Mon, Aug 3 - Fri, Aug 7
United Airlines Logo
10:15 am - 3:07 pm
BTM
-
EYW
26h 52m
2 stops
United Airlines Logo
4:00 pm - 10:27 pm
EYW
-
BTM
32h 27m
2 stops
$902United Airlines
Tue, Aug 4 - Mon, Aug 10
United Airlines Logo
10:15 am - 3:07 pm
BTM
-
EYW
26h 52m
2 stops
United Airlines Logo
4:00 pm - 10:30 pm
EYW
-
BTM
32h 30m
2 stops
$906United Airlines
Sun, Aug 2 - Fri, Aug 7

Delta flights from Montana to Key West

Our best Delta deals on Montana to Key West flight tickets
Delta
Apr 5
BZN5:58 amBozeman Gallatin Field
9h 32m
2 stops
EYW5:30 pmKey West
Apr 10
EYW7:30 amKey West
14h 44m
2 stops
BZN8:14 pmBozeman Gallatin Field
$706
Delta
Aug 3
BTM6:10 pmButte Silver Bow Co
14h 50m
2 stops
EYW11:00 amKey West
Aug 13
EYW7:00 amKey West
11h 55m
2 stops
BTM4:55 pmButte Silver Bow Co
$710
Delta
Aug 4
BTM6:10 pmButte Silver Bow Co
14h 50m
2 stops
EYW11:00 amKey West
Aug 12
EYW7:00 amKey West
11h 55m
2 stops
BTM4:55 pmButte Silver Bow Co
$730

United Airlines flights from Montana to Key West

Our best United Airlines deals on Montana to Key West flight tickets
United Airlines
Aug 5
BZN4:30 pmBozeman Gallatin Field
20h 37m
1 stop
EYW3:07 pmKey West
Aug 7
EYW4:00 pmKey West
19h 37m
2 stops
BZN9:37 amBozeman Gallatin Field
$823
United Airlines
Aug 3
BZN5:51 pmBozeman Gallatin Field
19h 16m
2 stops
EYW3:07 pmKey West
Aug 7
EYW4:00 pmKey West
19h 37m
2 stops
BZN9:37 amBozeman Gallatin Field
$828
United Airlines
Aug 4
BZN4:30 pmBozeman Gallatin Field
20h 37m
1 stop
EYW3:07 pmKey West
Aug 7
EYW4:00 pmKey West
19h 37m
2 stops
BZN9:37 amBozeman Gallatin Field
$849

momondo Fare Finder

 
Customize your flight search to find flights from Montana 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 March 30, 2026.
Use the filters below to find and compare flights from Montana to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MissoulaKey West

MSO - EYW

MSOEYW

Missoula Johnson-Bell Field

Wed 4/15

6:45 am-10:36 pm

2 stops13h 51m

Key West

Wed 4/22

2:29 pm-9:45 pm

1 stop9h 16m

$557
Quickest round-trip

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Tue 7/21

6:44 am-4:55 pm

1 stop8h 11m

Key West

Sun 7/26

2:21 pm-8:40 pm

1 stop8h 19m

$605

MissoulaKey West

MSO - EYW

MSOEYW

Missoula Johnson-Bell Field

Wed 4/15

6:45 am-10:36 pm

2 stops13h 51m

Key West

Wed 4/22

11:24 am-9:45 pm

2 stops12h 21m

$616

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Mon 8/3

6:44 am-4:55 pm

1 stop8h 11m

Key West

Mon 8/10

11:26 am-8:39 pm

2 stops11h 13m

$638

ButteKey West

BTM - EYW

BTMEYW

Butte Silver Bow Co

Mon 8/3

6:10 pm-11:00 am

2 stops14h 50m

Key West

Thu 8/13

7:00 am-4:55 pm

2 stops11h 55m

$710

ButteKey West

BTM - EYW

BTMEYW

Butte Silver Bow Co

Tue 8/4

6:10 pm-11:00 am

2 stops14h 50m

Key West

Wed 8/12

7:00 am-4:55 pm

2 stops11h 55m

$730

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Thu 5/7

6:35 pm-10:53 am

2 stops14h 18m

Key West

Mon 5/11

7:30 am-1:09 pm

1 stop7h 39m

$747

ButteKey West

BTM - EYW

BTMEYW

Butte Silver Bow Co

Mon 8/3

10:15 am-3:07 pm

2 stops26h 52m

Key West

Fri 8/7

4:00 pm-10:30 pm

2 stops32h 30m

$852

ButteKey West

BTM - EYW

BTMEYW

Butte Silver Bow Co

Tue 8/4

10:15 am-3:07 pm

2 stops26h 52m

Key West

Mon 8/10

4:00 pm-10:27 pm

2 stops32h 27m

$902

ButteKey West

BTM - EYW

BTMEYW

Butte Silver Bow Co

Sun 8/2

10:15 am-3:07 pm

2 stops26h 52m

Key West

Fri 8/7

4:00 pm-10:30 pm

2 stops32h 30m

$906

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Montana 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

Can stopping save me money on Montana to Key West flights?

You could potentially save up to 12% on your flight if you consider stops on a Montana to Key West flight.

Cheap Montana to Key West flight deals and tips

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

Fastest flight time

9h 23m

Direct flights

None
The fastest flight from Montana to Key West takes 9h 23m
There are no direct flights from Montana to Key West. There are no popular flight routes from Montana to Key West.
Search flight deals

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

    Prices for flights from Montana to Key West Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Key West Airport.

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

    The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Montana to Key West

Compare and see reviews for airlines that fly from Montana to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $284Free CancellationRating
7.9
8,358 reviews
Search Delta flights
American AirlinesPriceFrom $308Free CancellationRating
7.1
11,530 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 Montana to Key West?

Finding the right flight to Key West from Montana is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Key West quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Key West from Montana with this policy.

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

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

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

Of course. momondo tracks the price of Montana to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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