SEA - SJU

$205 Find Cheap Flights from Seattle to San Juan - Compare and Save

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Everything you should know

Cheapest round-trip
$505
Typical prices: $481-$761
Frontier
Tue 11/6Thu 11/8
SEA - SJU • 2 stops
Cheapest one-way
$205
Typical prices: $262-$441
Frontier
Tue 12/4
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
23 weeks
in advance
Our data shows that travelers who book at least 23 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 19% 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 $476 (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

Fri, Nov 6 - Sun, Nov 8
Frontier Logo
4:27 pm - 2:46 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
30h 19m2 stops Denver Intl Orlando
Frontier Logo
3:55 pm - 3:12 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
27h 17m2 stops Atlanta Hartsfield-Jackson Denver Intl
$505Frontier
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
9:29 pm - 8:37 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
19h 08m1 stop Fort Lauderdale
Multiple Airlines Logo
6:25 am - 9:53 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
19h 28m1 stop Fort Lauderdale
$519Multiple Airlines
Sat, Apr 10 - Thu, Apr 15
American Airlines Logo
10:47 pm - 12:35 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 48m1 stop Philadelphia
American Airlines Logo
3:10 pm - 12:36 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 26m1 stop Chicago O'Hare Intl
$538American Airlines
Sat, Apr 17 - Fri, Apr 23
American Airlines Logo
6:19 pm - 9:13 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 54m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
6:20 am - 9:23 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
18h 03m1 stop Dallas/Fort Worth
$538American Airlines
Wed, Feb 10 - Tue, Feb 23
Southwest Logo
6:55 am - 9:15 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 20m2 stops Denver Intl Orlando
Southwest Logo
12:15 pm - 10:30 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 15m2 stops Orlando Denver Intl
$572Southwest
Tue, Feb 9 - Wed, Feb 24
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
12:15 pm - 9:50 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 35m2 stops Orlando Sacramento Intl
$572Southwest
Tue, Feb 9 - Wed, Feb 17
Delta Logo
6:00 am - 11:50 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:30 am - 8:27 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 57m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul
$578Delta
Sun, Jan 24 - Tue, Feb 2
Delta Logo
6:00 am - 11:50 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 7:23 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 23m1 stop New York John F Kennedy Intl
$578Delta
Wed, Feb 3 - Tue, Feb 9
United Airlines Logo
7:00 am - 9:24 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 24m1 stop Houston George Bush Intcntl
United Airlines Logo
1:00 pm - 9:41 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 41m1 stop Newark
$590United Airlines
Thu, Feb 4 - Tue, Feb 9
United Airlines Logo
7:00 am - 9:00 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 00m1 stop Chicago O'Hare Intl
United Airlines Logo
1:00 pm - 9:41 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 41m1 stop Newark
$590United Airlines
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 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 typically range from $481 to $761. The lowest price found in the past 5 days was $505, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Seattle to San Juan Luis Munoz Marin Intl Airport. It’s 11% cheaper than the average day, while Friday is the most expensive, with prices 9% higher.

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

•January is the cheapest month to fly from Seattle to San Juan Luis Munoz Marin Intl Airport at $480 round-trip.
•December ($876) and July ($705) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 82% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights 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 23 weeks before departure. Booking in this window typically costs about 43% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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

Low season

October

Cheapest flight

$205
Beat the crowds with an average 48% drop in travelers.
The most popular month to fly with an average 36% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

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

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

    • Economy 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 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 $481 to $761, with an average of $593 over the past 12 months. Anything below $481 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 two weeks of departure) run 42% above the $593 route average. Book 23 weeks before departure for the lowest fares.

  • Have flight prices from Seattle to San Juan Luis Munoz Marin Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $505 to $2,745. That means the highest observed fare was about 5x higher than the lowest one.

  • 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 $273, which is 22% 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
    • Hertz
    • Payless
    • 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) - 16% of one-stop connections
    • Dallas/Fort Worth (DFW) - 14% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 12% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 10% of one-stop connections

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

    Yes. Flexible dates can save you up to 19% on flights from Seattle to San Juan Luis Munoz Marin Intl Airport. Saturday is the cheapest departure day at $532 round-trip on average, while Friday is the most expensive at $649, a difference of $117.

    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 46m via Houston George Bush Intcntl (IAH) and 10h 47m via Miami (MIA).

  • 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 are flexible, aim for a Saturday departure and avoid flying on Friday. On this route, Saturday flights average $532, about $117 less than Friday fares (18% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 23 weeks before you fly. On this route, that window historically saves about 43% 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 January. Fares historically average $480 round-trip in that month - typically $396 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
    • San Juan Airport Hotel
    • Hampton Inn & Suites by Hilton San Juan

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