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Cheap flights from Montana to Key West from $603

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Key West departing on 5/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:45 am - 4:52 pm
MSO
-
EYW
8h 07m
1 stop
American Airlines Logo
2:21 pm - 10:38 pm
EYW
-
MSO
10h 17m
1 stop
$603American Airlines
Tue, May 26 - Thu, Jun 4
American Airlines Logo
4:44 pm - 10:56 am
MSO
-
EYW
16h 12m
2 stops
American Airlines Logo
2:21 pm - 10:38 pm
EYW
-
MSO
10h 17m
1 stop
$608American Airlines
Tue, May 26 - Thu, Jun 4
American Airlines Logo
6:44 am - 4:52 pm
BZN
-
EYW
8h 08m
1 stop
American Airlines Logo
7:29 pm - 12:31 pm
EYW
-
BZN
19h 02m
2 stops
$617American Airlines
Fri, May 29 - Wed, Jun 3
American Airlines Logo
6:44 am - 4:52 pm
BZN
-
EYW
8h 08m
1 stop
American Airlines Logo
7:29 pm - 12:31 pm
EYW
-
BZN
19h 02m
2 stops
$621American Airlines
Sat, May 30 - Wed, Jun 3
American Airlines Logo
6:44 am - 7:19 pm
BZN
-
EYW
10h 35m
2 stops
American Airlines Logo
7:29 pm - 12:31 pm
EYW
-
BZN
19h 02m
2 stops
$626American Airlines
Sat, May 30 - Wed, Jun 3
American Airlines Logo
6:44 am - 4:52 pm
BZN
-
EYW
8h 08m
1 stop
American Airlines Logo
2:21 pm - 8:44 pm
EYW
-
BZN
8h 23m
1 stop
$639American Airlines
Fri, May 29 - Wed, Jun 3
American Airlines Logo
6:44 am - 4:52 pm
BZN
-
EYW
8h 08m
1 stop
American Airlines Logo
2:21 pm - 8:44 pm
EYW
-
BZN
8h 23m
1 stop
$643American Airlines
Sat, May 30 - Wed, Jun 3
American Airlines Logo
6:45 am - 4:52 pm
MSO
-
EYW
8h 07m
1 stop
American Airlines Logo
2:21 pm - 10:38 pm
EYW
-
MSO
10h 17m
1 stop
$651American Airlines
Tue, May 26 - Thu, Jun 4
United Airlines Logo
2:26 pm - 3:07 pm
MSO
-
EYW
22h 41m
3 stops
United Airlines Logo
3:55 pm - 9:34 pm
EYW
-
MSO
31h 39m
2 stops
$810United Airlines
Tue, May 26 - Thu, Jun 4
United Airlines Logo
5:55 pm - 3:09 pm
COD
-
EYW
19h 14m
2 stops
United Airlines Logo
2:26 pm - 10:43 pm
EYW
-
COD
34h 17m
2 stops
$871United Airlines
Tue, Jun 2 - Sat, Jun 6

United Airlines flights from Montana to Key West

Our best United Airlines deals on Montana to Key West flight tickets
United Airlines
May 26
MSO2:26 pmMissoula Johnson-Bell Field
22h 41m
3 stops
EYW3:07 pmKey West
Jun 4
EYW3:55 pmKey West
31h 39m
2 stops
MSO9:34 pmMissoula Johnson-Bell Field
$810
United Airlines
Jun 2
COD5:55 pmCody E.E. Faust
19h 14m
2 stops
EYW3:09 pmKey West
Jun 6
EYW2:26 pmKey West
34h 17m
2 stops
COD10:43 pmCody E.E. Faust
$871
United Airlines
May 26
MSO2:26 pmMissoula Johnson-Bell Field
22h 41m
3 stops
EYW3:07 pmKey West
Jun 4
EYW2:26 pmKey West
33h 08m
2 stops
MSO9:34 pmMissoula Johnson-Bell Field
$874

American Airlines flights from Montana to Key West

Our best American Airlines deals on Montana to Key West flight tickets
American Airlines
May 26
MSO6:45 amMissoula Johnson-Bell Field
8h 07m
1 stop
EYW4:52 pmKey West
Jun 4
EYW2:21 pmKey West
10h 17m
1 stop
MSO10:38 pmMissoula Johnson-Bell Field
$603
American Airlines
May 26
MSO4:44 pmMissoula Johnson-Bell Field
16h 12m
2 stops
EYW10:56 amKey West
Jun 4
EYW2:21 pmKey West
10h 17m
1 stop
MSO10:38 pmMissoula Johnson-Bell Field
$608
American Airlines
May 29
BZN6:44 amBozeman Gallatin Field
8h 08m
1 stop
EYW4:52 pmKey West
Jun 3
EYW7:29 pmKey West
19h 02m
2 stops
BZN12:31 pmBozeman Gallatin Field
$617

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 May 14, 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

Tue 5/26

6:45 am-4:52 pm

1 stop8h 07m

Key West

Thu 6/4

2:21 pm-10:38 pm

1 stop10h 17m

$603

MissoulaKey West

MSO - EYW

MSOEYW

Missoula Johnson-Bell Field

Tue 5/26

4:44 pm-10:56 am

2 stops16h 12m

Key West

Thu 6/4

2:21 pm-10:38 pm

1 stop10h 17m

$608

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Fri 5/29

6:44 am-4:52 pm

1 stop8h 08m

Key West

Wed 6/3

7:29 pm-12:31 pm

2 stops19h 02m

$617

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Sat 5/30

6:44 am-4:52 pm

1 stop8h 08m

Key West

Wed 6/3

7:29 pm-12:31 pm

2 stops19h 02m

$621

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Sat 5/30

6:44 am-7:19 pm

2 stops10h 35m

Key West

Wed 6/3

7:29 pm-12:31 pm

2 stops19h 02m

$626
Quickest round-trip

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Fri 5/29

6:44 am-4:52 pm

1 stop8h 08m

Key West

Wed 6/3

2:21 pm-8:44 pm

1 stop8h 23m

$639

BozemanKey West

BZN - EYW

BZNEYW

Bozeman Gallatin Field

Sat 5/30

6:44 am-4:52 pm

1 stop8h 08m

Key West

Wed 6/3

2:21 pm-8:44 pm

1 stop8h 23m

$643

MissoulaKey West

MSO - EYW

MSOEYW

Missoula Johnson-Bell Field

Tue 5/26

6:45 am-4:52 pm

1 stop8h 07m

Key West

Thu 6/4

2:21 pm-10:38 pm

1 stop10h 17m

$651

MissoulaKey West

MSO - EYW

MSOEYW

Missoula Johnson-Bell Field

Tue 5/26

2:26 pm-3:07 pm

3 stops22h 41m

Key West

Thu 6/4

3:55 pm-9:34 pm

2 stops31h 39m

$810

CodyKey West

COD - EYW

CODEYW

Cody E.E. Faust

Tue 6/2

5:55 pm-3:09 pm

2 stops19h 14m

Key West

Sat 6/6

2:26 pm-10:43 pm

2 stops34h 17m

$871

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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.
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Frequently asked questions about flying from Montana to Key West

  • 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 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
American AirlinesPriceFrom $308Free CancellationRating
7.1
11,664 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.

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