$348 Cheap Flights from Bellingham (BLI) to San Juan (SJU)

View $348 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Bellingham, WA (BLI-Bellingham Intl.) to Luis Munoz Marin Intl. Airport (SJU)

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Cheap Flights from Bellingham to San Juan (BLI-SJU)

Prices were available within the past 7 days and start at $348 for one-way flights and $623 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Oct 11 - Sat, Oct 18
BLI
Bellingham
SJU
San Juan
$623 Roundtrip, just found
$623
Roundtrip
just found
Select American Airlines flight, departing Sat, Oct 11 from Bellingham to San Juan, returning Sat, Oct 18, priced at $623 just found
American Airlines
Wed, Mar 25 - Wed, Apr 8
BLI
Bellingham
SJU
San Juan
$628 Roundtrip, found 5 days ago
$628
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Mar 25 from Bellingham to San Juan, returning Wed, Apr 8, priced at $628 found 5 days ago
Alaska Airlines
Wed, Mar 25 - Wed, Apr 8
BLI
Bellingham
SJU
San Juan
$686 Roundtrip, found 5 days ago
$686
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Mar 25 from Bellingham to San Juan, returning Wed, Apr 8, priced at $686 found 5 days ago
American Airlines
Sun, Feb 1 - Wed, Feb 18
BLI
Bellingham
SJU
San Juan
$691 Roundtrip, found 4 days ago
$691
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Feb 1 from Bellingham to San Juan, returning Wed, Feb 18, priced at $691 found 4 days ago
Alaska Airlines
Sat, Oct 11 - Sat, Oct 18
BLI
Bellingham
SJU
San Juan
$712 Roundtrip, just found
$712
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Oct 11 from Bellingham to San Juan, returning Sat, Oct 18, priced at $712 just found
American Airlines
Sun, Jan 18 - Fri, Jan 30
BLI
Bellingham
SJU
San Juan
$716 Roundtrip, found 4 days ago
$716
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Jan 18 from Bellingham to San Juan, returning Fri, Jan 30, priced at $716 found 4 days ago
Alaska Airlines
Sat, Oct 11 - Sat, Oct 18
BLI
Bellingham
SJU
San Juan
$722 Roundtrip, just found
$722
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Oct 11 from Bellingham to San Juan, returning Sat, Oct 18, priced at $722 just found
American Airlines
Wed, Mar 25 - Wed, Apr 8
BLI
Bellingham
SJU
San Juan
$725 Roundtrip, found 5 days ago
$725
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Mar 25 from Bellingham to San Juan, returning Wed, Apr 8, priced at $725 found 5 days ago
American Airlines
Fri, Jan 30 - Wed, Feb 18
BLI
Bellingham
SJU
San Juan
$738 Roundtrip, found 4 days ago
$738
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Jan 30 from Bellingham to San Juan, returning Wed, Feb 18, priced at $738 found 4 days ago
American Airlines
Sun, Feb 1 - Sat, Feb 14
BLI
Bellingham
SJU
San Juan
$741 Roundtrip, found 4 days ago
$741
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Feb 1 from Bellingham to San Juan, returning Sat, Feb 14, priced at $741 found 4 days ago

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $938
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $938
Flights from Bellingham (BLI) to San Juan (SJU)
Origin airport
Bellingham Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
American Airlines
Roundtrip price
$623
Distance
3755 mi

Bellingham to San Juan Flights

The cheapest times to fly from Bellingham to San Juan

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 Bellingham to San Juan are during the month of October. You can find some of the cheapest flights from Bellingham to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bellingham to San Juan

Sunday is one of the best days to book for cheap flights from Bellingham to San Juan: 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 Bellingham to San Juan

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 Bellingham to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $348 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 Bellingham to San Juan 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 Bellingham to San Juan 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.

 

Frequently asked questions

How much does a flight from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU) cost?
Lock in a cheap one-way flight from $348 or cheap return flight from $623 from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU)?
Planning your trip for October can help you save, as it's the cheapest month for flights between BLI and SJU. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from BLI to SJU. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU)?
You'll need to hop on a flight with a layover if you're traveling from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from BLI to SJU?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU)?
To avoid potential delays on the Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Waiting until just before your trip to book your flight from BLI to SJU generally means paying more. While you may come across some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary for a better chance of snagging a bargain.
Can I cancel or change the date of my flight from Bellingham Intl. Airport (BLI) to Luis Munoz Marin Intl. Airport (SJU)?
It's generally possible to reschedule or cancel your BLI to SJU flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.