SEA - SJU

$154 Find Cheap Flights from Seattle to San Juan - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$340
Typical prices: $468-$738
American Airlines
Wed 10/10Mon 10/15
SEA - SJU • 1 stop
Cheapest one-way
$154
Typical prices: $265-$439
Multiple Airlines
Sat 10/13
SEA - SJU • 1 stop
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 10m (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

Sat, Oct 10 - Thu, Oct 15
American Airlines Logo
8:24 am - 10:57 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 33m1 stop Philadelphia
American Airlines Logo
4:17 pm - 12:10 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
10h 53m1 stop Dallas/Fort Worth
$340American Airlines
Sun, Jan 24 - Sat, Feb 6
American Airlines Logo
6:22 pm - 10:38 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 16m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
10:32 am - 12:54 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
18h 22m1 stop Miami
$340American Airlines
Sat, Oct 31 - Tue, Nov 10
Frontier Logo
12:14 pm - 10:15 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
19h 01m2 stops Las Vegas Harry Reid Intl Orlando
Frontier Logo
4:52 pm - 3:12 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
26h 20m2 stops Miami Denver Intl
$420Frontier
Sun, Feb 7 - Fri, Feb 12
Southwest Logo
9:15 am - 1:20 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 05m2 stops Austin Bergstrom Orlando
Southwest Logo
6:10 am - 8:05 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
17h 55m2 stops Baltimore/Washington Phoenix Sky Harbor Intl
$447Southwest
Tue, Oct 27 - Tue, Nov 3
Frontier Logo
12:14 pm - 2:42 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
23h 28m2 stops Las Vegas Harry Reid Intl Orlando
Frontier Logo
3:59 pm - 3:12 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
27h 13m2 stops Atlanta Hartsfield-Jackson Denver Intl
$447Frontier
Fri, Oct 16 - Fri, Oct 23
Multiple Airlines Logo
5:50 pm - 3:15 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
18h 25m1 stop Minneapolis St Paul
Multiple Airlines Logo
11:54 am - 3:12 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
30h 18m3 stops Miami Atlanta Hartsfield-Jackson Denver Intl
$454Multiple Airlines
Mon, Oct 26 - Wed, Nov 11
Multiple Airlines Logo
8:00 pm - 9:15 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
34h 15m3 stops Los Angeles Las Vegas Harry Reid Intl Orlando
Multiple Airlines Logo
4:52 pm - 5:22 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
28h 30m3 stops Miami Atlanta Hartsfield-Jackson Minneapolis St Paul
$458Multiple Airlines
Fri, Oct 16 - Sat, Oct 24
JetBlue Logo
11:55 pm - 3:14 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 19m1 stop Boston Logan Intl
JetBlue Logo
10:30 am - 9:20 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 50m1 stop New York John F Kennedy Intl
$510JetBlue
Fri, Oct 16 - Tue, Oct 20
JetBlue Logo
11:55 pm - 3:14 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 19m1 stop Boston Logan Intl
JetBlue Logo
10:30 am - 8:48 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 18m1 stop New York John F Kennedy Intl
$510JetBlue
Thu, Oct 29 - Mon, Nov 2
Southwest Logo
9:00 am - 12:25 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 25m2 stops Austin Bergstrom Orlando
Southwest Logo
12:40 pm - 12:40 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 00m2 stops Orlando Chicago Midway
$540Southwest
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 $340. 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 $340 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

$154
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.

  • 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

  • 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 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.

  • 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 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 $221, which is 37% below the typical average for this route.

  • 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

  • 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).

  • 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.

  • 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 10m, 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 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.

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
    - San Juan Airport Hotel

More options for your flight from Seattle to San Juan

Complete your trip to San Juan with a hotel stay or car rental

Car rentals in San Juan
Hotels in San Juan
Vacations in San Juan