Cheap flights from Montana to Saint Thomas Island from $459

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 Saint Thomas Island departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Montana to Saint Thomas Island

Cheap round-trip flights

American Airlines Logo
1:05 pm - 11:40 amMSO-STT
19h 35m2 stops
American Airlines Logo
1:30 pm - 12:25 pmSTT-MSO
25h 55m2 stops
$849American Airlines
Find Deal
Mon, Mar 2 - Thu, Mar 5
United Airlines Logo
2:42 pm - 12:00 pmFCA-STT
18h 18m2 stops
United Airlines Logo
1:02 pm - 9:59 pmSTT-FCA
35h 57m2 stops
$1,060United Airlines
Find Deal
Sun, Jan 11 - Sun, Jan 18
United Airlines Logo
5:00 pm - 11:00 amFCA-STT
16h 00m2 stops
United Airlines Logo
2:05 pm - 10:08 amSTT-FCA
22h 03m2 stops
$1,100United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
6:00 am - 12:00 pmFCA-STT
27h 00m2 stops
United Airlines Logo
1:02 pm - 1:36 pmSTT-FCA
27h 34m3 stops
$1,200United Airlines
Find Deal
Sun, Jan 11 - Sun, Jan 18
United Airlines Logo
5:00 pm - 11:00 amFCA-STT
16h 00m2 stops
United Airlines Logo
2:05 pm - 12:08 pmSTT-FCA
24h 03m1 stop
$1,220United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
1:18 pm - 3:52 pmMSO-STT
23h 34m2 stops
American Airlines Logo
6:36 pm - 12:48 pmSTT-MSO
21h 12m2 stops
$2,444American Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
American Airlines Logo
1:18 pm - 2:59 pmMSO-STT
22h 41m1 stop
American Airlines Logo
1:30 pm - 12:48 pmSTT-MSO
26h 18m2 stops
$2,529American Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
American Airlines Logo
1:18 pm - 2:59 pmMSO-STT
22h 41m1 stop
American Airlines Logo
1:30 pm - 12:48 pmSTT-MSO
26h 18m2 stops
$2,753American Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
American Airlines Logo
1:18 pm - 2:59 pmMSO-STT
22h 41m1 stop
American Airlines Logo
3:39 pm - 12:48 pmSTT-MSO
24h 09m1 stop
$3,495American Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3
American Airlines Logo
1:18 pm - 2:59 pmMSO-STT
22h 41m1 stop
American Airlines Logo
3:39 pm - 12:48 pmSTT-MSO
24h 09m1 stop
$3,719American Airlines
Find Deal
Thu, Dec 25 - Sat, Jan 3

United Airlines flights from Montana to Saint Thomas Island

Our best United Airlines deals on Montana to Saint Thomas Island flight tickets
United Airlines
Jan 11
FCA2:42 pmKalispell Glacier Park
18h 18m
2 stops
STT12:00 pmSaint Thomas Island Cyril E King
Jan 18
STT1:02 pmSaint Thomas Island Cyril E King
35h 57m
2 stops
FCA9:59 pmKalispell Glacier Park
United Airlines
Mar 10
FCA5:00 pmKalispell Glacier Park
16h 00m
2 stops
STT11:00 amSaint Thomas Island Cyril E King
Mar 11
STT2:05 pmSaint Thomas Island Cyril E King
22h 03m
2 stops
FCA10:08 amKalispell Glacier Park
United Airlines
Jan 11
FCA6:00 amKalispell Glacier Park
27h 00m
2 stops
STT12:00 pmSaint Thomas Island Cyril E King
Jan 18
STT1:02 pmSaint Thomas Island Cyril E King
27h 34m
3 stops
FCA1:36 pmKalispell Glacier Park

American Airlines flights from Montana to Saint Thomas Island

Our best American Airlines deals on Montana to Saint Thomas Island flight tickets
American Airlines
Mar 2
MSO1:05 pmMissoula Johnson-Bell Field
19h 35m
2 stops
STT11:40 amSaint Thomas Island Cyril E King
Mar 5
STT1:30 pmSaint Thomas Island Cyril E King
25h 55m
2 stops
MSO12:25 pmMissoula Johnson-Bell Field
American Airlines
Dec 25
MSO1:18 pmMissoula Johnson-Bell Field
23h 34m
2 stops
STT3:52 pmSaint Thomas Island Cyril E King
Jan 3
STT6:36 pmSaint Thomas Island Cyril E King
21h 12m
2 stops
MSO12:48 pmMissoula Johnson-Bell Field
American Airlines
Dec 25
MSO1:18 pmMissoula Johnson-Bell Field
22h 41m
1 stop
STT2:59 pmSaint Thomas Island Cyril E King
Jan 3
STT1:30 pmSaint Thomas Island Cyril E King
26h 18m
2 stops
MSO12:48 pmMissoula Johnson-Bell Field

momondo Fare Finder

 
Customize your flight search to find flights from Montana to Saint Thomas Island 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 September 22, 2025.
Use the filters below to find and compare flights from Montana to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Mon 3/2

1:05 pm-11:40 am

2 stops19h 35m

Saint Thomas Island Cyril E King

Thu 3/5

1:30 pm-12:25 pm

2 stops25h 55m

$849

KalispellSaint Thomas Island

FCA - STT

FCASTT

Kalispell Glacier Park

Sun 1/11

2:42 pm-12:00 pm

2 stops18h 18m

Saint Thomas Island Cyril E King

Sun 1/18

1:02 pm-9:59 pm

2 stops35h 57m

$1,060

KalispellSaint Thomas Island

FCA - STT

FCASTT

Kalispell Glacier Park

Tue 3/10

5:00 pm-11:00 am

2 stops16h 00m

Saint Thomas Island Cyril E King

Wed 3/11

2:05 pm-10:08 am

2 stops22h 03m

$1,100

KalispellSaint Thomas Island

FCA - STT

FCASTT

Kalispell Glacier Park

Sun 1/11

6:00 am-12:00 pm

2 stops27h 00m

Saint Thomas Island Cyril E King

Sun 1/18

1:02 pm-1:36 pm

3 stops27h 34m

$1,200

KalispellSaint Thomas Island

FCA - STT

FCASTT

Kalispell Glacier Park

Tue 3/10

5:00 pm-11:00 am

2 stops16h 00m

Saint Thomas Island Cyril E King

Wed 3/11

2:05 pm-12:08 pm

1 stop24h 03m

$1,220

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Thu 12/25

1:18 pm-3:52 pm

2 stops23h 34m

Saint Thomas Island Cyril E King

Sat 1/3

6:36 pm-12:48 pm

2 stops21h 12m

$2,444

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Thu 12/25

1:18 pm-2:59 pm

1 stop22h 41m

Saint Thomas Island Cyril E King

Sat 1/3

1:30 pm-12:48 pm

2 stops26h 18m

$2,529

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Thu 12/25

1:18 pm-2:59 pm

1 stop22h 41m

Saint Thomas Island Cyril E King

Sat 1/3

1:30 pm-12:48 pm

2 stops26h 18m

$2,753

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Thu 12/25

1:18 pm-2:59 pm

1 stop22h 41m

Saint Thomas Island Cyril E King

Sat 1/3

3:39 pm-12:48 pm

1 stop24h 09m

$3,495

MissoulaSaint Thomas Island

MSO - STT

MSOSTT

Missoula Johnson-Bell Field

Thu 12/25

1:18 pm-2:59 pm

1 stop22h 41m

Saint Thomas Island Cyril E King

Sat 1/3

3:39 pm-12:48 pm

1 stop24h 09m

$3,719

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Montana to Saint Thomas Island

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 day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Montana is on a Monday. momondo users have found tickets for Monday departures for as low as $589. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Montana to Saint Thomas Island for around $875.

What is the cheapest time of day to depart on your flight to Saint Thomas Island?

The cheapest time of day to fly to Saint Thomas Island is at noon when flights can be purchased for as low as $627. Flights to Saint Thomas Island are more costly in the morning, with an average ticket price of $881. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Montana to Saint Thomas Island flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Saint Thomas Island

Direct flights

None
There are no direct flights from Montana to Saint Thomas Island. There are no popular flight routes from Montana to Saint Thomas Island.
  • When did momondo last update prices for flights from Montana to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Montana to Saint Thomas Island Cyril E King Airport were last updated today.

  • How old do you have to be to fly from Montana to Saint Thomas Island Cyril E King 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 Montana to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents you'll need for your trip to Saint Thomas Island Cyril E King Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Thomas Island Cyril E King Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Saint Thomas Island

Compare and see reviews for airlines that fly from Montana to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $667Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Saint Thomas Island?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Thomas Island from Montana.

Can I find flights from Montana to Saint Thomas Island with flexible booking policies on momondo?

Flights from Montana to Saint Thomas Island with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Montana to Saint Thomas Island?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Thomas Island from Montana.

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

If you are not ready to book a flight from Montana to Saint Thomas Island now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Thomas Island and let you know when they change.

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1 adult
Wed 10/22
Wed 10/29

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