What is the cheapest airline that flies from Montana to Puerto Rico?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Montana to Puerto Rico

What airlines fly to Puerto Rico?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Puerto Rico from Montana according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Puerto Rico. Keep in mind that there are 4 different airlines that fly to Puerto Rico on a routine basis, so you have a few additional options to choose from.

How long is the flight from Montana to Puerto Rico?

Flight times from Montana to Puerto Rico vary, but if you’re flying out of Billings and flying into San Juan Luis Munoz Marin Intl Airport (one of the most popular routes), then the duration is 8h 25m on average. Another popular route from Montana to Puerto Rico is flying from Kalispell to San Juan Luis Munoz Marin Intl Airport, which will take roughly 9h 10m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Montana to Puerto Rico?

Prices for flights from Montana to Puerto Rico were last updated today.

How many operators does momondo search for flights from Montana to Puerto Rico?

There are 4 operators available for flights from Montana to Puerto Rico as of September 2025.

How old do you have to be to fly from Montana to Puerto Rico?

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 Puerto Rico.

What documentation or ID do you need to fly to Puerto Rico?

The travel and health documents you'll need for your trip to Puerto Rico 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 Puerto Rico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$253 Cheap Flights from Montana to Puerto Rico in 2025/26

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Find the cheapest flights from Montana to Puerto Rico

Round-trip

One-way

Cheap round-trip flights

6:15 am - 12:36 amBZN-SJU

15h 21m2 stops

2:05 am - 10:40 amSJU-BZN

11h 35m1 stop

$493United Airlines

Find Deal

Thu, Jan 29 - Mon, Feb 2

7:00 am - 10:14 pmMSO-SJU

12h 14m1 stop

6:50 pm - 12:25 pmSJU-MSO

20h 35m2 stops

$531American Airlines

Find Deal

Thu, Jan 8 - Wed, Jan 21

12:52 pm - 12:00 pmBZN-SJU

20h 08m2 stops

6:50 pm - 12:06 pmSJU-BZN

20h 16m2 stops

$531American Airlines

Find Deal

Thu, Feb 5 - Mon, Feb 9

1:58 pm - 10:07 amBIL-SJU

17h 09m2 stops

6:42 pm - 1:28 pmSJU-BIL

21h 46m2 stops

$531American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

11:30 am - 12:36 amBZN-SJU

10h 06m1 stop

2:25 pm - 9:33 pmSJU-BZN

10h 08m1 stop

$533United Airlines

Find Deal

Thu, Jan 29 - Tue, Feb 3

6:16 pm - 12:57 pmMSO-SJU

15h 41m2 stops

3:20 pm - 12:35 amSJU-MSO

12h 15m2 stops

$573Delta

Find Deal

Mon, Dec 8 - Thu, Dec 11

3:50 pm - 9:55 amBZN-SJU

15h 05m2 stops

5:30 am - 2:55 pmSJU-BZN

12h 25m2 stops

$775Southwest

Find Deal

Wed, Feb 11 - Mon, Feb 16

1:34 pm - 5:00 amBZN-SJU

12h 26m1 stop

7:20 am - 10:04 pmSJU-BZN

17h 44m1 stop

$815Alaska Airlines

Find Deal

Fri, Jan 2 - Fri, Jan 9

1:34 pm - 5:00 amBZN-SJU

12h 26m1 stop

6:45 am - 2:18 pmSJU-BZN

34h 33m2 stops

$868Alaska Airlines

Find Deal

Fri, Jan 2 - Fri, Jan 9

6:12 pm - 1:00 pmFCA-SJU

15h 48m2 stops

6:15 am - 11:07 pmSJU-FCA

19h 52m2 stops

$1,091Delta

Find Deal

Sun, Jan 11 - Sun, Jan 18

United Airlines flights from Montana to Puerto Rico

Our best United Airlines deals on Montana to Puerto Rico flight tickets

United Airlines

Jan 29

BZN6:15 amBozeman Gallatin Field

15h 21m

2 stops

SJU12:36 amSan Juan Luis Munoz Marin Intl

Feb 2

SJU2:05 amSan Juan Luis Munoz Marin Intl

11h 35m

1 stop

BZN10:40 amBozeman Gallatin Field

$493

Find similar

United Airlines

Jan 29

BZN11:30 amBozeman Gallatin Field

10h 06m

1 stop

SJU12:36 amSan Juan Luis Munoz Marin Intl

Feb 3

SJU2:25 pmSan Juan Luis Munoz Marin Intl

10h 08m

1 stop

BZN9:33 pmBozeman Gallatin Field

$533

Find similar

United Airlines

Mar 17

BIL7:00 amBillings Logan Intl

8h 25m

1 stop

SJU5:25 pmSan Juan Luis Munoz Marin Intl

Mar 24

SJU1:25 pmSan Juan Luis Munoz Marin Intl

9h 26m

1 stop

BIL8:51 pmBillings Logan Intl

$548

Find similar

Delta flights from Montana to Puerto Rico

Our best Delta deals on Montana to Puerto Rico flight tickets

Delta

Dec 8

MSO6:16 pmMissoula Johnson-Bell Field

15h 41m

2 stops

SJU12:57 pmSan Juan Luis Munoz Marin Intl

Dec 11

SJU3:20 pmSan Juan Luis Munoz Marin Intl

12h 15m

2 stops

MSO12:35 amMissoula Johnson-Bell Field

$573

Find similar

Delta

Jan 11

FCA6:12 pmKalispell Glacier Park

15h 48m

2 stops

SJU1:00 pmSan Juan Luis Munoz Marin Intl

Jan 18

SJU6:15 amSan Juan Luis Munoz Marin Intl

19h 52m

2 stops

FCA11:07 pmKalispell Glacier Park

$1,091

Find similar

Delta

Jan 9

BIL6:15 amBillings Logan Intl

14h 34m

2 stops

SJU11:49 pmSan Juan Luis Munoz Marin Intl

Jan 13

SJU7:30 amSan Juan Luis Munoz Marin Intl

15h 05m

2 stops

BIL7:35 pmBillings Logan Intl

$1,190

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Thu 1/29

6:15 am-12:36 am

2 stops15h 21m

San Juan Luis Munoz Marin Intl

Mon 2/2

2:05 am-10:40 am

1 stop11h 35m

$493

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

7:00 am-10:14 pm

1 stop12h 14m

San Juan Luis Munoz Marin Intl

Wed 1/21

6:50 pm-12:25 pm

2 stops20h 35m

$531

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Thu 2/5

12:52 pm-12:00 pm

2 stops20h 08m

San Juan Luis Munoz Marin Intl

Mon 2/9

6:50 pm-12:06 pm

2 stops20h 16m

$531

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Thu 12/4

1:58 pm-10:07 am

2 stops17h 09m

San Juan Luis Munoz Marin Intl

Mon 12/8

6:42 pm-1:28 pm

2 stops21h 46m

$531

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Thu 1/29

11:30 am-12:36 am

1 stop10h 06m

San Juan Luis Munoz Marin Intl

Tue 2/3

2:25 pm-9:33 pm

1 stop10h 08m

$533

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Mon 12/8

6:16 pm-12:57 pm

2 stops15h 41m

San Juan Luis Munoz Marin Intl

Thu 12/11

3:20 pm-12:35 am

2 stops12h 15m

$573

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Wed 2/11

3:50 pm-9:55 am

2 stops15h 05m

San Juan Luis Munoz Marin Intl

Mon 2/16

5:30 am-2:55 pm

2 stops12h 25m

$775

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Fri 1/2

1:34 pm-5:00 am

1 stop12h 26m

San Juan Luis Munoz Marin Intl

Fri 1/9

7:20 am-10:04 pm

1 stop17h 44m

$815

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Fri 1/2

1:34 pm-5:00 am

1 stop12h 26m

San Juan Luis Munoz Marin Intl

Fri 1/9

6:45 am-2:18 pm

2 stops34h 33m

$868

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Sun 1/11

6:12 pm-1:00 pm

2 stops15h 48m

San Juan Luis Munoz Marin Intl

Sun 1/18

6:15 am-11:07 pm

2 stops19h 52m

$1,091

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to Puerto Rico

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Montana is on a Sunday. momondo users have found tickets for Sunday departures for as low as $382. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Friday, with ticket prices averaging around $761.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from Montana to Puerto Rico during this time can be as low as $487. In contrast, the most expensive time of day to depart to Puerto Rico is in the morning when prices are around $604.

Can stopping save me money on Montana to Puerto Rico flights?

You could potentially save up to 10% on your flight if you consider stops on a Montana to Puerto Rico flight.

Cheap Montana to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Puerto Rico

Direct flights	None

There are no direct flights from Montana to Puerto Rico. There are no popular flight routes from Montana to Puerto Rico.

Search flight deals

When did momondo last update prices for flights from Montana to Puerto Rico?
Prices for flights from Montana to Puerto Rico were last updated today.
How many operators does momondo search for flights from Montana to Puerto Rico?
There are 4 operators available for flights from Montana to Puerto Rico as of September 2025.
How old do you have to be to fly from Montana to Puerto Rico?
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 Puerto Rico.
What documentation or ID do you need to fly to Puerto Rico?
The travel and health documents you'll need for your trip to Puerto Rico 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 Puerto Rico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Puerto Rico

Compare and see reviews for airlines that fly from Montana to Puerto Rico with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $235	Free Cancellation	Rating 7.2 2,912 reviews	Search JetBlue flights
United Airlines	PriceFrom $352	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $374	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Southwest	PriceFrom $479	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Puerto Rico?

Finding the right flight to Puerto Rico 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 Puerto Rico quick and easy, saving you time and money.

Can I find flights from Montana to Puerto Rico with flexible booking policies on momondo?

Flights from Montana to Puerto Rico 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 Puerto Rico?

Once all potential Montana to Puerto Rico flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Puerto Rico, momondo offers a useful price alert feature which will track prices for flights to Puerto Rico from Montana and alert you when they change.

An easier way to manage your Puerto Rico 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.

Start using Trips

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Get notified when prices go down

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Thu 10/23

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Find better results for your trip to Puerto Rico

Popular cities in Puerto Rico

Flights to San Juanfrom $118

Flights to Aguadillafrom $157

Flights to Mayagüezfrom $260

Montana flight routes

Flights from Missoula Johnson-Bell Field to Las Vegas Harry Reid Intl

Flights from Great Falls to Las Vegas Harry Reid Intl

Flights from Bozeman Gallatin Field to Boise Air Term. Gowen Fld

Flights from Bozeman Gallatin Field to Las Vegas Harry Reid Intl

Flights from Bozeman Gallatin Field to Salt Lake City

Flights from Billings Logan Intl to Las Vegas Harry Reid Intl

Cheap flights from Montana to Puerto Rico from $253

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 Puerto Rico departing on 10/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Montana to Puerto Rico

Cheap round-trip flights

Cheap one-way flights

United Airlines flights from Montana to Puerto Rico

Our best United Airlines deals on Montana to Puerto Rico flight tickets

Delta flights from Montana to Puerto Rico

Our best Delta deals on Montana to Puerto Rico flight tickets

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Use the filters below to find and compare flights from Montana to Puerto Rico that are best for you.

See travel insights to Puerto Rico from

How to get the cheapest flight ticket from Montana to Puerto Rico

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 Puerto Rico?

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from Montana to Puerto Rico during this time can be as low as $487. In contrast, the most expensive time of day to depart to Puerto Rico is in the morning when prices are around $604.

Can stopping save me money on Montana to Puerto Rico flights?

You could potentially save up to 10% on your flight if you consider stops on a Montana to Puerto Rico flight.

What is the cheapest airline that flies from Montana to Puerto Rico?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Montana to Puerto Rico

What airlines fly to Puerto Rico?

How long is the flight from Montana to Puerto Rico?

Cheap Montana to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Puerto Rico

Direct flights

When did momondo last update prices for flights from Montana to Puerto Rico?

How many operators does momondo search for flights from Montana to Puerto Rico?

How old do you have to be to fly from Montana to Puerto Rico?

What documentation or ID do you need to fly to Puerto Rico?

Best airlines flying from Montana to Puerto Rico

Compare and see reviews for airlines that fly from Montana to Puerto Rico with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Puerto Rico?

Can I find flights from Montana to Puerto Rico with flexible booking policies on momondo?

How can momondo help me find flights from Montana to Puerto Rico?

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

An easier way to manage your Puerto Rico 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Puerto Rico

Popular cities in Puerto Rico

Popular flights according to clicks in the last 7 days on momondo