SEA - SJU

$160 Find Cheap Flights from Seattle to San Juan - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$320
Typical prices: $468-$738
American Airlines
Tue 10/2Thu 10/11
SEA - SJU • 1 stop
Cheapest one-way
$160
Typical prices: $265-$439
American Airlines
Sat 9/29
SEA - SJU • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Seattle and San Juan Luis Munoz Marin Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
When to travel
October
Cheapest • 22% price drop
March
Most popular
Good to know
+1
Good to know
+1
Top layover airports
New York John F Kennedy Intl (JFK)
Cheapest • Avg $445 (round-trip)
Denver Intl (DEN)
Shortest trip • 10h 20m (one-way)
Insights
Insights
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We hope you love your trip to San Juan Luis Munoz Marin Intl Airport!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to San Juan

Fri, Jan 29 - Mon, Feb 8
American Airlines Logo
6:22 pm - 9:38 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 16m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
3:44 pm - 12:44 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 00m1 stop Chicago O'Hare Intl
$320American Airlines
Tue, Oct 27 - Tue, Nov 3
American Airlines Logo
10:48 pm - 1:37 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 49m1 stop Philadelphia
American Airlines Logo
7:30 am - 4:54 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 24m2 stops Miami Dallas/Fort Worth
$320American Airlines
Mon, Sep 28 - Fri, Oct 2
Southwest Logo
6:25 pm - 11:00 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 35m2 stops Denver Intl Orlando
Southwest Logo
12:35 pm - 1:35 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 00m2 stops Orlando Phoenix Sky Harbor Intl
$413Southwest
Sat, Nov 14 - Sat, Nov 21
United Airlines Logo
5:05 am - 10:22 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 17m2 stops Denver Intl Washington, D.C. Dulles Intl
United Airlines Logo
2:35 pm - 10:11 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
11h 36m1 stop Newark
$426United Airlines
Wed, Nov 4 - Wed, Nov 11
United Airlines Logo
8:09 am - 10:22 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 13m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
1:00 pm - 11:15 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 15m2 stops Newark Denver Intl
$426United Airlines
Tue, Nov 10 - Tue, Nov 17
Frontier Logo
12:14 pm - 12:59 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
32h 45m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
Frontier Logo
3:59 pm - 10:59 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
23h 00m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$439Frontier
Sat, Oct 17 - Wed, Oct 21
Southwest Logo
6:15 am - 9:35 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 20m2 stops Denver Intl Orlando
Southwest Logo
5:05 am - 2:20 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 15m2 stops Orlando Denver Intl
$466Southwest
Fri, Nov 6 - Sat, Nov 14
Multiple Airlines Logo
6:36 pm - 4:14 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
17h 38m1 stop Minneapolis St Paul
Multiple Airlines Logo
3:55 am - 3:12 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
39h 17m2 stops Orlando Denver Intl
$495Multiple Airlines
Fri, Nov 6 - Sat, Nov 14
Multiple Airlines Logo
6:36 pm - 4:14 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
17h 38m1 stop Minneapolis St Paul
Multiple Airlines Logo
7:23 am - 9:45 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
30h 22m2 stops Orlando Las Vegas Harry Reid Intl
$521Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Frontier Logo
10:57 am - 3:22 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
25h 25m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
Frontier Logo
2:45 pm - 9:42 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
21h 57m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$529Frontier
Booking Insights

Price, demand and travel trends for Seattle to San Juan Luis Munoz Marin Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to San Juan Luis Munoz Marin Intl Airport with more confidence.

How much is a round-trip flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

Round-trip flights from Seattle to San Juan Luis Munoz Marin Intl Airport start at $320. Prices are below average for this route right now, with typical round-trip fares ranging from $468 to $738. The lowest price found in the past 5 days was $320 on American Airlines.

What's the cheapest day of the week to fly from Seattle to San Juan Luis Munoz Marin Intl Airport?

Saturday is the cheapest day of the week to fly from Seattle to San Juan Luis Munoz Marin Intl Airport, it is 12% cheaper than the average day. Friday is the most expensive day with flight prices 12% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Seattle to San Juan Luis Munoz Marin Intl Airport?

  • October is the cheapest month to fly from Seattle to San Juan Luis Munoz Marin Intl Airport at $453 round-trip.
  • December ($788) and July ($700) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 73% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to San Juan Luis Munoz Marin Intl Airport the cheapest?

Flights from Seattle to San Juan Luis Munoz Marin Intl Airport are cheapest 9 weeks before departure. Booking in this window typically costs about 41% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Seattle to San Juan Luis Munoz Marin Intl Airport flights

Low season

October

Cheapest flight

$160
Best time to beat the crowds with an average 22% drop in price.
Flight from Seattle to San Juan Luis Munoz Marin Intl Airport

When to book flights from Seattle to San Juan

Are your dates flexible? Find out the best times to travel from Seattle to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to San Juan Luis Munoz Marin Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Flights from Seattle to San Juan Luis Munoz Marin Intl Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at San Juan Luis Munoz Marin Intl (SJU).

  • What cabin classes can I book on flights from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Three cabin classes are available on flights from Seattle to San Juan Luis Munoz Marin Intl Airport:

    • Economy Class
    • Business Class
    • First Class

  • Which airports do connecting flights from Seattle to San Juan Luis Munoz Marin Intl Airport pass through?

    One-stop flights from Seattle to San Juan Luis Munoz Marin Intl Airport most commonly connect through:

    • Miami (MIA) - 17% of one-stop connections
    • Dallas/Fort Worth (DFW) - 13% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 11% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 9% of one-stop connections

    Miami (MIA) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to San Juan Luis Munoz Marin Intl Airport?

    On the Seattle to San Juan Luis Munoz Marin Intl Airport route, being flexible with your departure day can save you up to 22%. Saturday is the cheapest day at $514 round-trip on average, while Friday is the most expensive at $653: a $139 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in San Juan Luis Munoz Marin Intl Airport?

    Some of the most popular sights in San Juan Luis Munoz Marin Intl Airport are Viejo San Juan, Condado Beach and Puerto Rico Convention Center. These are among the most viewed places in San Juan Luis Munoz Marin Intl Airport on KAYAK.

  • How expensive are last-minute Seattle to San Juan Luis Munoz Marin Intl Airport flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 43% above the route average of $579. Book 9 weeks before departure for the lowest fares.

  • How long is a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    A nonstop flight from Seattle to San Juan Luis Munoz Marin Intl Airport takes 0h 00m, covering 3,723 miles.

  • Do I need a passport to fly from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Seattle to San Juan Luis Munoz Marin Intl Airport looking right now?

    One-way fares from Seattle to San Juan Luis Munoz Marin Intl Airport are currently lower than usual. Average one-way flight prices are about $223, which is 36% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 10h 20m, compared with 10h 41m via Chicago Midway (MDW) and 10h 53m via Washington, D.C. Dulles Intl (IAD).

  • What is the time difference between Seattle and San Juan Luis Munoz Marin Intl Airport?

    San Juan Luis Munoz Marin Intl Airport is 3 hours ahead of Seattle (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at San Juan Luis Munoz Marin Intl Airport (SJU)?

    San Juan Luis Munoz Marin Intl Airport (SJU) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    · Routes Car & Truck Rentals
    · U-Save
    · Payless
    · Hertz
    · Europcar

  • How much should I expect to pay for a Seattle to San Juan Luis Munoz Marin Intl Airport flight?

    Round-trip flights from Seattle to San Juan Luis Munoz Marin Intl Airport range from $468 to $738, with an average of $579 over the past 12 months. Anything below $468 counts as a good deal.

Your guide to booking Seattle to San Juan Luis Munoz Marin Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Saturday departure instead of Friday. On this route, Saturday flights average $514 - about $139 less than Friday (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 41% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to San Juan Luis Munoz Marin Intl Airport trip for October. Fares historically average $453 round-trip in that month - typically $335 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Juan Luis Munoz Marin Intl Airport.
    - Coral by The Sea Hotel
    - Hampton Inn & Suites by Hilton San Juan
    - Palmar Sur

Everything you need to know for your flight from Seattle to San Juan

Information on your arrival and departure airports

Seattle (SEA)
Luis Munoz Marin Intl (SJU)