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311 € Cheap Flights from San Juan to Seattle

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      Travellers and cabin class, 1 Adult, Economy

      Compare San Juan to Seattle flight deals

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

      Book the best Seattle fare with no extra fees

      Flight deals from San Juan to Seattle

      Looking for a cheap last-minute deal or the best return flight from San Juan to Seattle? If you want to travel next month, return fares start from 311 €. Find the lowest prices on one-way and return tickets right here.
      Seattle.311 € per passenger.Departing Sat, 15 Aug, returning Tue, 25 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 15 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 25 Aug, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 311 €, select.
      Seattle.329 € per passenger.Departing Sat, 19 Sep, returning Mon, 28 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 19 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 28 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 329 €, select.
      Seattle.352 € per passenger.Departing Sun, 30 Aug, returning Sun, 13 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sun, 30 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sun, 13 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 352 €, select.
      Seattle.357 € per passenger.Departing Tue, 20 Oct, returning Thu, 5 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Tue, 20 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Thu, 5 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 357 €, select.
      Seattle.375 € per passenger.Departing Wed, 23 Sep, returning Fri, 2 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 23 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 2 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 375 €, select.
      Seattle.400 € per passenger.Departing Thu, 8 Oct, returning Wed, 14 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Thu, 8 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 14 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 400 €, select.
      Seattle.402 € per passenger.Departing Wed, 22 Jul, returning Fri, 31 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Wed, 22 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 31 Jul, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 402 €, select.
      Seattle.406 € per passenger.Departing Thu, 6 May, returning Sat, 15 May.Return flight with Delta.Outbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Thu, 6 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 15 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 406 €, select.
      Seattle.409 € per passenger.Departing Fri, 14 Aug, returning Sat, 31 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Fri, 14 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 31 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 409 €, select.
      Seattle.421 € per passenger.Departing Thu, 30 Jul, returning Fri, 7 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Thu, 30 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 7 Aug, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 421 €, select.
      Seattle.430 € per passenger.Departing Sat, 30 Jan, returning Fri, 5 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Juan Luis Munoz Marin on Sat, 30 Jan, arriving in Seattle / Tacoma International.Inbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Fri, 5 Feb, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 430 €, select.
      Seattle.437 € per passenger.Departing Sat, 24 Apr, returning Sat, 1 May.Return flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sat, 24 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sat, 1 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 437 €, select.
      Seattle.482 € per passenger.Departing Thu, 10 Dec, returning Sun, 13 Dec.Return flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Thu, 10 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sun, 13 Dec, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 482 €, select.
      Seattle.498 € per passenger.Departing Sat, 21 Nov, returning Fri, 27 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Juan Luis Munoz Marin on Sat, 21 Nov, arriving in Seattle / Tacoma International.Inbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Fri, 27 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 498 €, select.
      Seattle.542 € per passenger.Departing Mon, 5 Apr, returning Sat, 10 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Mon, 5 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 10 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 542 €, select.
      Seattle.785 € per passenger.Departing Thu, 31 Dec, returning Tue, 5 Jan.Return flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Thu, 31 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 5 Jan, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 785 €, select.

      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 August.
      Jul
      from 402 €
      Aug
      from 311 €
      Sep
      from 329 €
      Oct
      from 400 €
      Nov
      from 498 €
      Dec
      from 482 €
      Jan
      from 1.223 €
      Feb
      Find prices
      Mar
      Find prices
      Apr
      from 542 €
      May
      from 406 €
      Jun
      Find prices

      Alternative San Juan to Seattle routes

      Looking for the cheapest, fastest or easiest route from San Juan to Seattle? You could fly into the following airports instead.

      Seattle Lake Union SPB

      2km from central Seattle
      Closest
      Search flights

      Seattle Boeing Fld

      11km from central Seattle
      from 1.001 €
      Search flights

      Seattle / Tacoma International

      20km from central Seattle
      Cheapest
      from 311 €
      Search flights

      Paine Field

      33km from central Seattle
      Search flights

      San Juan to Seattle: Flight information

      The things to know before you go.
      Cheapest flight found311 €
      Cheapest month to flyAugust

      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 return flight from San Juan to Seattle is 311 €. 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 311 €.
      As of July 2026, there are no flights flying from San Juan to Seattle.
      The cheapest month to fly from San Juan to Seattle is usually August.
      If you're flying from San Juan, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from 311 €.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Juan to Seattle on Saturday, 15 August 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 July, the average temperature is usually around 17°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 .

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

      • San Juan Luis Munoz Marin Airport (SJU) is San Juan's main airport. Explore your options for reserving a flight from San Juan to Seattle departing from here.

      • Seattle / Tacoma International Airport (SEA) and Seattle Lake Union SPB Airport (LKE) are Seattle's chief entry points.

      • Seattle is four hours behind San Juan and is in the UTC-8 timezone.

      • Give yourself plenty of time to catch your San Juan to Seattle flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

      • Be prepared for longer lines in popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a smart move.

      How to find the cheapest flights from San Juan to Seattle

      • Don't leave things to the last minute. You're more likely to find cheap San Juan to Seattle flights if you book early. Airlines often offer some great early bird rates.

      • If you can be flexible with your travel plans, try using the 'Whole month' search tool. It'll give you the cheapest price across each month when searching for your plane ticket from San Juan to Seattle.

      • Snapping up a cheap flight from San Juan to Seattle couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as there's a better deal.

      • Pick your preferred arrival and departure times, number of stops and airlines by using the filters. Or sort your San Juan to Seattle flight results by 'Fastest,' 'Cheapest' or 'Best.'

      Flying from San Juan

      San Juan Luis Munoz Marin Airport (SJU)

      • Consider adding a stopover to potentially find a cheaper San Juan to Seattle flight. Just uncheck 'Direct flights only' when browsing departures from San Juan Luis Munoz Marin Airport. Break up your trip (and maybe save some cash) by stopping at one of these popular options:

        • Atlanta Hartsfield-Jackson Airport (ATL)

        • Denver International Airport (DEN)

        • Orlando International Airport (MCO)

      • SJU is around 11 kilometres from central San Juan. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 20 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the trip time to be around 1 hour.

      • Booked an early flight from San Juan to Seattle? Avoid the last-minute rush to the terminal (and catch some extra z's) by choosing one of these stays near San Juan Luis Munoz Marin Airport:

      • San Juan Luis Munoz Marin Airport gets high marks for on-time performance. 81% of flights that depart SJU arrive at their destination on time.

      Arriving in Seattle

      Seattle / Tacoma International Airport (SEA)

      • Seattle / Tacoma International Airport (SEA) is approximately 19 kilometres from the centre of Seattle. If you're catching a taxi or a ride-share, the drive takes around 25 minutes.

      • Getting there by public transport typically takes 35 minutes.

      • If you're coming in on a late flight from San Juan to Seattle, few things beat the convenience of staying near the terminal. Collect your bags from the carousel and then be showered and resting not long after at one of these hotels near SEA:

      • Travel at your own pace with a Seattle / Tacoma International Airport rental car. Pick up your wheels from Thrifty, Europcar or Budget and experience more of Seattle and beyond.

      • Reserving your vehicle from Seattle / Tacoma International Airport about one week ahead can help you get the best possible rate.

      Paine Field Airport (PAE)

      • Paine Field Airport (PAE) is around 32 kilometres from central Seattle. Once you've hopped off your flight from San Juan to Seattle, it'll take you approximately 20 minutes to get to the heart of the city in a taxi or ride-share.

      • If you choose to travel on public transport, you'll reach the centre in 40 minutes or so.

      • There are some great places ready to welcome you near PAE. Settle in and get cosy after your San Juan to Seattle flight at any of these perfectly located options:

      • Pick up a Paine Field Airport rental car and be your own tour guide. You can choose from top providers like Budget and Enterprise.

      • Get the vehicle you actually want, not just what's left over, by securing your ride from PAE ahead of your arrival. You can also avoid paying more than you have to, especially during peak travel times.

      Seattle Boeing Fld Airport (BFI)

      • Seattle Boeing Fld Airport (BFI) is around 11 kilometres from the centre of Seattle. It takes about 20 minutes to reach the city centre in a car once you've stepped off your flight from San Juan to Seattle.

      • If you're using public transport, the journey time is around 35 minutes.

      • Stay in control of the next part of your trip by picking up a Seattle Boeing Fld Airport rental car. Alamo, Budget and Avis are some companies you can book with.

      • Booking a couple of weeks in advance of your flight from San Juan to Seattle is always a good idea. Along with more affordable prices, you might find it easier to get the make and model you prefer at BFI.

      Best time to go to Seattle

      • March is the quietest month for flights from San Juan to Seattle, while July is the busiest. Find the ideal time to visit Seattle based on whether you like a bustling atmosphere or a more laid-back vibe.

      • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Lock in your San Juan to Seattle ticket then if that's your ideal forecast.

      • February sees average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Search for cheap flights from San Juan to Seattle around that time if you like cooler conditions.

      More about Seattle

      • Start your Seattle trip off on the right foot by choosing the ideal place to stay. After booking your flight from San Juan to Seattle, explore our range of hotels including:

      • All great adventures should include a little sightseeing. Space Needle, Pike Place Fish Market and The Museum of Flight are essential stops on your Seattle itinerary.

      Explore more of the United States

      • Portland is just one of the many cities in the United States waiting to be explored after you've seen Seattle. Around 241 kilometres to the south, check out popular attractions including Portland Japanese Garden, Peninsula Park Rose Garden and International Rose Test Garden.

      • Spokane is another sought-after destination in the United States and is around 370 kilometres east of Seattle. No trip is complete without experiencing Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

      Plan the rest of your trip from San Juan to Seattle

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.