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Puerto Rico

$321+ Cheap flights from Montana to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — SJU
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Find flight deals from Montana to Puerto Rico

Cheapest flights from Montana to Puerto Rico
Explore the most affordable flight options available from Montana to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/61:58 pmBIL - SJU
2 stops17h 11mAmerican Airlines
Mon 12/156:42 pmSJU - BIL
2 stops21h 46mAmerican Airlines
Deal found 11/3$531
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/191:52 pmBZN - SJU
2 stops17h 18mAmerican Airlines
Wed 11/264:56 pmSJU - BZN
2 stops23h 05mAmerican Airlines
Deal found 11/3$608
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:00 amBIL - SJU
1 stop8h 25mUnited Airlines
Thu 12/118:30 amSJU - BIL
2 stops15h 51mUnited Airlines
Deal found 11/2$621
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:55 amBIL - SJU
3 stops26h 22mMultiple Airlines
Thu 12/46:00 amSJU - BIL
3 stops30h 12mMultiple Airlines
Deal found 11/3$629
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/81:58 pmBIL - SJU
2 stops19h 01mAmerican Airlines
Thu 12/115:10 pmSJU - BIL
2 stops31h 08mAmerican Airlines
Deal found 11/2$641
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:34 pmBZN - SJU
2 stops19h 46mDelta
Wed 11/263:25 pmSJU - BZN
2 stops11h 45mDelta
Deal found 11/2$655
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:46 pmBZN - SJU
2 stops19h 11mAmerican Airlines
Wed 12/3110:03 pmSJU - BZN
2 stops19h 51mAmerican Airlines
Deal found 11/3$667
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:00 amBIL - SJU
1 stop10h 25mUnited Airlines
Wed 12/32:05 amSJU - BIL
2 stops14h 13mUnited Airlines
Deal found 11/3$685
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:00 pmBIL - SJU
2 stops20h 43mAmerican Airlines
Thu 12/412:49 pmSJU - BIL
2 stops11h 26mAmerican Airlines
Deal found 11/3$698
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:46 pmBZN - SJU
2 stops19h 11mAmerican Airlines
Mon 12/291:30 amSJU - BZN
1 stop14h 16mAmerican Airlines
Deal found 11/3$709
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:00 amBIL - SJU
2 stops14h 36mUnited Airlines
Mon 11/178:30 amSJU - BIL
2 stops15h 48mUnited Airlines
Deal found 11/2$725
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:54 pmBIL - SJU
2 stops25h 28mUnited Airlines
Mon 12/82:25 pmSJU - BIL
1 stop9h 56mUnited Airlines
Deal found 11/3$762

Cheap flight deals from Montana to Puerto Rico

Keep the following information in mind while searching for Montana to Puerto Rico flight deals. Data was last updated November 3, 2025.

Round-trip from

$439
(United Airlines)

One-way from

$321
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$540
From Montana to Puerto Rico
Search Deals
One-way flight from Montana to Puerto Rico
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to Puerto Rico 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, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Montana to Puerto Rico that are best for you.

Fly from

Montana

Fly to

Puerto Rico

Route

Depart

Return

Price

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Fri 2/27

4:29 pm-6:11 am

2 stops10h 42m

San Juan Luis Munoz Marin Intl

Mon 3/2

2:05 am-3:23 pm

2 stops16h 18m

$453

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Thu 2/5

6:15 am-6:25 pm

1 stop9h 10m

San Juan Luis Munoz Marin Intl

Sun 2/8

2:05 am-10:57 am

1 stop11h 52m

$493

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/29

6:00 am-10:22 pm

2 stops13h 22m

San Juan Luis Munoz Marin Intl

Thu 2/12

2:25 pm-9:57 pm

1 stop10h 32m

$495

KalispellSan Juan

FCA - SJU

FCASJU

Kalispell Glacier Park

Wed 4/29

6:31 am-5:30 pm

1 stop8h 59m

San Juan Luis Munoz Marin Intl

Wed 5/6

1:40 pm-9:30 pm

1 stop9h 50m

$495

MissoulaSan Juan

MSO - SJU

MSOSJU

Missoula Johnson-Bell Field

Thu 1/8

1:21 pm-1:08 pm

2 stops20h 47m

San Juan Luis Munoz Marin Intl

Wed 1/21

7:07 am-8:45 pm

1 stop16h 38m

$531

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Tue 2/10

2:13 pm-10:48 am

2 stops17h 35m

San Juan Luis Munoz Marin Intl

Fri 2/20

7:00 pm-10:46 am

2 stops18h 46m

$531

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Thu 2/5

1:42 pm-1:08 pm

2 stops20h 26m

San Juan Luis Munoz Marin Intl

Mon 2/9

7:12 pm-1:19 pm

2 stops21h 07m

$531

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 12/6

1:58 pm-10:09 am

2 stops17h 11m

San Juan Luis Munoz Marin Intl

Mon 12/15

6:42 pm-1:28 pm

2 stops21h 46m

$531

BozemanSan Juan

BZN - SJU

BZNSJU

Bozeman Gallatin Field

Sat 2/21

4:29 pm-6:11 am

2 stops10h 42m

San Juan Luis Munoz Marin Intl

Wed 3/4

2:25 pm-9:24 pm

1 stop9h 59m

$538

BillingsSan Juan

BIL - SJU

BILSJU

Billings Logan Intl

Sat 2/7

2:15 pm-12:30 pm

2 stops19h 15m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:30 am-9:35 pm

1 stop17h 05m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 25 results
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Best time to book a flight from Montana to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to Puerto Rico

What is the cheapest month to book a flight from Montana to Puerto Rico?

Currently, February is the cheapest month in which you can book a flight from Montana to Puerto Rico (average of $216). Flying from Montana to Puerto Rico in August is currently the most expensive (average of $549). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Montana to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to Puerto Rico?

    For as low as $453, United Airlines can have you in Puerto Rico from Montana in 10h 42m. The distance from Montana to Puerto Rico is about 3184 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Montana to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Montana to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Puerto Rico.

  • Can I find deals for business class flights from Montana to Puerto Rico?

    Yes. Cheapflights offers flight deals from Montana to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Puerto Rico?

    Currently, February is the cheapest month in which you can book a flight from Montana to Puerto Rico (average of $216). Flying from Montana to Puerto Rico in August is currently the most expensive (average of $549). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Montana to Puerto Rico

Discover the top 4 airlines that operate flights from Montana to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$208Average$394FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$235Average$712FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$352Average$793FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$479Average$546FlexibilityNo cancel feeOn-time63%

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