$308 Cheap Flights from San Juan (SJU) to Great Falls (GTF)

View $308 flight on Tue, Dec 9, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Great Falls, MT (GTF-Great Falls Intl.)

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Cheap Flights from San Juan to Great Falls (SJU-GTF)

Prices were available within the past 7 days and start at $308 for one-way flights and $663 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Nov 15 - Tue, Nov 18
SJU
San Juan
GTF
Great Falls
$663 Roundtrip, found 7 hours ago
$663
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from San Juan to Great Falls, returning Tue, Nov 18, priced at $663 found 7 hours ago
United
Sat, Nov 15 - Tue, Nov 18
SJU
San Juan
GTF
Great Falls
$695 Roundtrip, found 7 hours ago
$695
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from San Juan to Great Falls, returning Tue, Nov 18, priced at $695 found 7 hours ago
United
Sat, Nov 15 - Tue, Nov 18
SJU
San Juan
GTF
Great Falls
$755 Roundtrip, found 7 hours ago
$755
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from San Juan to Great Falls, returning Tue, Nov 18, priced at $755 found 7 hours ago
United
Sat, Nov 15 - Tue, Nov 18
SJU
San Juan
GTF
Great Falls
$800 Roundtrip, found 7 hours ago
$800
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from San Juan to Great Falls, returning Tue, Nov 18, priced at $800 found 7 hours ago
United
Fri, Nov 14 - Thu, Nov 20
SJU
San Juan
GTF
Great Falls
$825 Roundtrip, found 1 day ago
$825
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 14 from San Juan to Great Falls, returning Thu, Nov 20, priced at $825 found 1 day ago
United
Fri, Nov 14 - Wed, Nov 19
SJU
San Juan
GTF
Great Falls
$830 Roundtrip, found 1 day ago
$830
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 14 from San Juan to Great Falls, returning Wed, Nov 19, priced at $830 found 1 day ago
Delta
Fri, Nov 14 - Sun, Nov 23
SJU
San Juan
GTF
Great Falls
$835 Roundtrip, found 1 day ago
$835
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Nov 14 from San Juan to Great Falls, returning Sun, Nov 23, priced at $835 found 1 day ago
United
Fri, Nov 14 - Tue, Nov 25
SJU
San Juan
GTF
Great Falls
$842 Roundtrip, found 1 day ago
$842
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 14 from San Juan to Great Falls, returning Tue, Nov 25, priced at $842 found 1 day ago
United
Sat, Nov 15 - Tue, Nov 18
SJU
San Juan
GTF
Great Falls
$845 Roundtrip, found 7 hours ago
$845
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Nov 15 from San Juan to Great Falls, returning Tue, Nov 18, priced at $845 found 7 hours ago
United
Tue, Nov 18 - Tue, Nov 25
SJU
San Juan
GTF
Great Falls
$855 Roundtrip, found 1 day ago
$855
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 18 from San Juan to Great Falls, returning Tue, Nov 25, priced at $855 found 1 day ago

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF) cost?
Grab a cheap one-way flight from $308 or cheap return flight from $663 from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF)?
November is the cheapest month to fly from SJU to GTF. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SJU to GTF. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF)?
Nonstop flights from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SJU to GTF?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF)?
Choose a flight from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF) last-minute?
Last-minute bookings from SJU to GTF are generally more expensive. To secure the best prices, start looking for flights ahead of time. That said, if your travel plans are flexible, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a SJU to GTF flight and hotel package?
Opting for a SJU to GTF flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Great Falls Intl. Airport (GTF)?
If you reserved your SJU to GTF flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

Travel information

Origin airport
Luis Munoz Marin Intl.
Destination airport
Great Falls Intl.
Airlines serving
Delta, United
Roundtrip price
$662
Distance
3238 mi

Book with confidence

San Juan to Great Falls Flights

The cheapest times to fly from San Juan to Great Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Juan to Great Falls are during the month of November. You can find some of the cheapest flights from San Juan to Great Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Juan to Great Falls

Sunday is one of the best days to book for cheap flights from San Juan to Great Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Juan to Great Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Juan to Great Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $308 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Juan to Great Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Juan to Great Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Juan to Great Falls Flights

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*Available to One Key members.