Cheap flights from San Juan to Seattle

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Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from San Juan to Seattle

Looking for a cheap last-minute deal or the best round-trip flight from San Juan to Seattle? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from San Juan to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Juan to Seattle flights are currently cheapest in May.

San Juan to Seattle: Flight information

The things to know before you go.
Cheapest flight found$277
Cheapest month to flyMay

Finding cheap flights from San Juan to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a round-trip flight from San Juan to Seattle is $277. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from San Juan to Seattle. But we found flights with one or more stops from $277.
There are no flights flying from San Juan to Seattle, as of February 2026.
The cheapest month to fly from San Juan to Seattle is usually May.
If you're flying from San Juan, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the center of Seattle. We've found flights to this airport from $277.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Juan to Seattle on Friday, May 8, 2026.
No airlines currently offer direct flights between San Juan and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 4°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
The cheapest airline that flies to Seattle is Frontier Airlines.

Traveling from San Juan to Seattle: what you need to know

  • San Juan's main base, Luis Munoz Marin International Airport (SJU), is where many unforgettable trips begin. Explore the departure options from here when searching for a flight from San Juan to Seattle.

  • When it comes to landing in Seattle, Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base Airport (LKE) are the chief entry points.

  • Seattle is three hours behind San Juan and observes the UTC-7 timezone.

  • For a stress-free start to your trip, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your San Juan to Seattle flight.

  • Flying during a peak time such as July? Public holidays and other popular periods can lead to longer queues and delays at check-in and security. Be extra cautious and get there up to four hours before international flights and two hours before domestic departures.

How to find the cheapest flights from San Juan to Seattle

  • Booking early is often the key to securing a cheap San Juan to Seattle flight. Prices tend to rise as demand increases, so the nearer your departure date, the more you'll likely spend on your ticket.

  • Finding cheap plane tickets from San Juan to Seattle is more likely if you're flexible with your trip dates. Try using the 'Whole month' search function to see the best prices throughout the month and bag a great deal.

  • You don't need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll notify you as soon as a better deal is available on cheap flights from San Juan to Seattle.

  • Find a cheap San Juan to Seattle flight with the help of our filters. Choose your ideal departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from San Juan

Luis Munoz Marin International Airport (SJU)

  • Think about adding a stopover to potentially save money on your San Juan to Seattle flight. Simply uncheck 'Direct flights only' when searching for departures from Luis Munoz Marin International Airport. Break up your trip (and maybe save some cash) by stopping at one of these popular airports:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Denver International Airport (DEN)

    • Orlando International Airport (MCO)

  • Located around 6 kilometers from the center of San Juan, SJU can be reached in about 10 minutes by car, depending on traffic. The journey by public transport takes roughly 55 minutes.

  • After a stress-free start to your travels? Stay near Luis Munoz Marin International Airport. Whether you're taking an early flight from San Juan to Seattle or want to avoid feeling rushed, these hotels are ideal:

  • When it comes to the on-time performance of Luis Munoz Marin International Airport, data shows 73.65% of flights complete their journey on time.

Arriving in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is approximately 19 kilometers from central Seattle. If you're catching a cab or a ride-share, the drive will take around 20 minutes.

  • When traveling on public transport, expect a journey time of about 55 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from San Juan to Seattle. Reserve one of these accommodation options near SEA instead:

  • Explore without limits with a Seattle-Tacoma International Airport rental car. Pick up your wheels from Thrifty, Europcar or Budget and see more of Seattle and beyond.

  • Lock in the best deal by booking your vehicle from Seattle-Tacoma International Airport around one week before your trip.

Lake Union Sea Plane Base Airport (LKE)

  • As soon as your flight from San Juan to Seattle has arrived, you can reach the city center in around 10 minutes by car. Central Seattle is approximately 3 kilometers from Lake Union Sea Plane Base Airport (LKE).

  • If you're traveling on public transport, it'll take about 25 minutes.

  • Hang up the 'Do not disturb' sign and relax at a hotel close to LKE. Here are a few options where you can kick back after your flight from San Juan to Seattle:

Best time to go to Seattle

  • May is the quietest month for flights from San Juan to Seattle, while July is the busiest. Figure out the best time to go to Seattle based on whether you want a lively atmosphere or a more laid-back vibe.

  • Book a San Juan to Seattle ticket departing in August if you're eager to visit the city during its warmest month. Expect temperatures in Seattle to range from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap flights from San Juan to Seattle in February if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • When it comes to looking for somewhere to rest your head, you'll find the best stays in Seattle right here. Explore these hotels once you've booked your flight from San Juan to Seattle:

  • There are so many things to see and do in this city it can be tricky to work out where to begin. Greyhound: Bus Station, LMN Architects and Boeing Radiation Effects Lab are popular attractions which should be on any good Seattle itinerary.

Explore more of United States

  • You've seen Seattle, now it's time to discover other parts of United States. Travel around 241 kilometers south to Portland to tick off its leading attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you've got a jam-packed schedule ahead.

  • Around 370 kilometers east of Seattle, Spokane is another essential stop in United States. Experience this destination's highlights firsthand at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.