SEA - SJU

$160 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
$320
Typical prices: $468-$738
American Airlines
Thu 10/25Sun 11/4
SEA - SJU • 1 stop
Cheapest one-way
$160
Typical prices: $265-$439
American Airlines
Sat 9/29
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 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

Tue, Oct 27 - Tue, Nov 3
American Airlines Logo
8:39 pm - 3:38 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
15h 59m1 stop Miami
American Airlines Logo
8:00 am - 4:54 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 54m2 stops Miami Dallas/Fort Worth
$320American Airlines
Sun, Oct 25 - Wed, Nov 4
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
2:44 pm - 10:00 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
11h 16m1 stop Philadelphia
$320American Airlines
Fri, Sep 18 - Fri, Sep 25
Delta Logo
11:59 pm - 4:49 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson
Delta Logo
1:16 pm - 11:20 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 04m1 stop New York John F Kennedy Intl
$426Delta
Fri, Sep 18 - Fri, Sep 25
Delta Logo
11:59 pm - 4:49 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 10:10 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
18h 10m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$426Delta
Mon, Nov 23 - Sat, Dec 5
JetBlue Logo
10:50 pm - 5:20 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
14h 30m1 stop New York John F Kennedy Intl
JetBlue Logo
5:23 pm - 11:59 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
10h 36m1 stop Minneapolis St Paul
$427JetBlue
Sun, Jan 17 - Wed, Jan 20
JetBlue Logo
9:55 pm - 1:05 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 10m1 stop New York John F Kennedy Intl
JetBlue Logo
3:15 pm - 10:05 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
10h 50m1 stop Detroit Metropolitan Wayne County
$427JetBlue
Tue, Sep 15 - Tue, Sep 22
Frontier Logo
10:57 am - 5:43 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
27h 46m2 stops Las Vegas Harry Reid Intl Orlando
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
$443Frontier
Tue, Sep 15 - Wed, Sep 23
Frontier Logo
10:57 am - 3:19 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
25h 22m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
Frontier Logo
6:30 am - 9:42 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
30h 12m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$469Frontier
Mon, Feb 1 - Mon, Feb 8
Southwest Logo
6:35 am - 10:00 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 25m2 stops Chicago Midway Tampa
Southwest Logo
7:35 am - 4:45 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 10m2 stops Tampa Denver Intl
$496Southwest
Mon, Jan 11 - Thu, Jan 28
Southwest Logo
6:55 am - 10:00 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 05m2 stops Denver Intl Tampa
Southwest Logo
2:05 pm - 10:30 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 25m2 stops Tampa Denver Intl
$496Southwest
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?

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

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • 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 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.

  • What are the earliest and latest flights from Seattle to San Juan Luis Munoz Marin Intl Airport?

    These are the earliest and latest flight times available from Seattle to San Juan Luis Munoz Marin Intl Airport:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • 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.

  • 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 $207, which is 41% 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
    - San Juan Airport Hotel

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)