$182 Cheap Flights from San Juan (SJU) to Seattle (SEA)

View $182 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from San Juan to Seattle (SJU-SEA)

Prices were available within the past 7 days and start at $182 for one-way flights and $363 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep 17 - Sun, Sep 27
SJU
San Juan
SEA
Seattle
$363 Roundtrip, just found
$363
Roundtrip
just found
Select American Airlines flight, departing Thu, Sep 17 from San Juan to Seattle, returning Sun, Sep 27, priced at $363 just found
Delta
Wed, Apr 22 - Sat, May 2
SJU
San Juan
SEA
Seattle
$363 Roundtrip, found 3 hours ago
$363
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Apr 22 from San Juan to Seattle, returning Sat, May 2, priced at $363 found 3 hours ago
Southwest Airlines
Thu, Feb 12 - Sun, Feb 22
SJU
San Juan
SEA
Seattle
$363 Roundtrip, found 4 hours ago
$363
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Thu, Feb 12 from San Juan to Seattle, returning Sun, Feb 22, priced at $363 found 4 hours ago
American Airlines
Thu, Dec 4 - Tue, Dec 9
SJU
San Juan
SEA
Seattle
$365 Roundtrip, found 5 days ago
$365
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Dec 4 from San Juan to Seattle, returning Tue, Dec 9, priced at $365 found 5 days ago
Delta
Thu, Apr 23 - Fri, Apr 24
SJU
San Juan
SEA
Seattle
$366 Roundtrip, found 3 hours ago
$366
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Apr 23 from San Juan to Seattle, returning Fri, Apr 24, priced at $366 found 3 hours ago
Southwest Airlines
Fri, Nov 21 - Sat, Jan 3
SJU
San Juan
SEA
Seattle
$369 Roundtrip, found 15 hours ago
$369
Roundtrip
found 15 hours ago
Select Southwest Airlines flight, departing Fri, Nov 21 from San Juan to Seattle, returning Sat, Jan 3, priced at $369 found 15 hours ago
Southwest Airlines
Thu, Dec 4 - Tue, Dec 9
SJU
San Juan
SEA
Seattle
$370 Roundtrip, found 5 days ago
$370
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Thu, Dec 4 from San Juan to Seattle, returning Tue, Dec 9, priced at $370 found 5 days ago
American Airlines
Wed, May 6 - Sun, May 10
SJU
San Juan
SEA
Seattle
$372 Roundtrip, found 6 days ago
$372
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, May 6 from San Juan to Seattle, returning Sun, May 10, priced at $372 found 6 days ago
United
Tue, Nov 18 - Fri, Dec 5
SJU
San Juan
SEA
Seattle
$375 Roundtrip, found 5 days ago
$375
Roundtrip
found 5 days ago
Select United flight, departing Tue, Nov 18 from San Juan to Seattle, returning Fri, Dec 5, priced at $375 found 5 days ago
JetBlue Airways
Wed, Apr 29 - Mon, May 11
SJU
San Juan
SEA
Seattle
$428 Roundtrip, found 8 hours ago
$428
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Wed, Apr 29 from San Juan to Seattle, returning Mon, May 11, priced at $428 found 8 hours ago

Find the cheapest month to fly from San Juan (SJU) to Seattle (SEA)

February is typically the cheapest month to fly

From $237 - $661 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $541
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $541
Flights from San Juan (SJU) to Seattle (SEA)
Origin airport
Luis Munoz Marin Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$363
Distance
3724 mi

San Juan to Seattle Flights

The cheapest times to fly from San Juan to Seattle

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

 

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

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

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $182 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 Seattle 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 Seattle 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 Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $182 or cheap return flight from $363 from Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your trip for September is a great way to save, as it's the cheapest month for flights between SJU and SEA. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SJU to SEA. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA)?
There aren't any daily nonstop flights from Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SJU to SEA?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the season and airline.*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 Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA) route, travel 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 Luis Munoz Marin Intl. Airport (SJU) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from SJU to SEA right before your getaway is generally more expensive. However, if there's some wiggle room with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a SJU to SEA flight and hotel package?
Opting for a SJU to SEA flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all 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 Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your SJU to SEA flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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*Available to One Key members.