SEA - SJU

C$ 393 Find Cheap Flights from Seattle to San Juan – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 785
Typical prices: C$ 693-C$ 1,102
Southwest
Sun 2/12Sun 9/12
SEA - SJU • 2 stops
Cheapest one-way flights
C$ 393
Typical prices: C$ 381-C$ 633
Southwest
Fri 26/1
SEA - SJU • 2 stops
Direct 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 travellers who book at least 23 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
When to travel
September
Cheapest • 18% 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 C$ 673 (round-trip)
Denver Intl (DEN)
Shortest trip • 10h 12m (one-way)
Insights
Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to San Juan Luis Munoz Marin Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Luis Munoz Marin Intl (SEA-SJU)

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

Recent round-trip flight deals from Seattle to Luis Munoz Marin Intl

Wed, 2 Dec - Wed, 9 Dec
Southwest Logo
6:10 a.m. - 10:25 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 15m2 stops Denver Intl Tampa
Southwest Logo
12:30 p.m. - 11:35 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 05m2 stops Orlando Chicago Midway
C$ 785Southwest
Mon, 25 Jan - Sat, 30 Jan
Southwest Logo
6:45 a.m. - 9:50 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 05m2 stops Denver Intl Orlando
Southwest Logo
5:35 a.m. - 3:40 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 05m2 stops Orlando Austin Bergstrom
C$ 819Southwest
Tue, 1 Dec - Sat, 12 Dec
Southwest Logo
6:30 a.m. - 10:25 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 55m2 stops Chicago Midway Tampa
Southwest Logo
5:40 a.m. - 4:05 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 25m2 stops Orlando Denver Intl
C$ 826Southwest
Fri, 27 Nov - Mon, 7 Dec
Southwest Logo
5:30 a.m. - 11:00 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 30m2 stops Chicago Midway Orlando
Southwest Logo
12:30 p.m. - 10:50 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 20m2 stops Orlando Denver Intl
C$ 833Southwest
Tue, 1 Dec - Thu, 10 Dec
Southwest Logo
9:25 a.m. - 12:50 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 25m2 stops Denver Intl Orlando
Southwest Logo
10:45 a.m. - 10:20 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 35m2 stops Orlando Sacramento Intl
C$ 842Southwest
Sat, 5 Dec - Sun, 13 Dec
Southwest Logo
1:05 p.m. - 10:30 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
17h 25m2 stops Denver Intl Orlando
Southwest Logo
6:35 a.m. - 5:50 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 15m2 stops Baltimore/Washington Denver Intl
C$ 853Southwest
Mon, 4 Jan - Tue, 19 Jan
Southwest Logo
6:35 p.m. - 11:40 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 05m2 stops San Diego Orlando
Southwest Logo
7:25 a.m. - 5:40 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 15m2 stops Tampa Denver Intl
C$ 855Southwest
Sat, 23 Jan - Tue, 2 Feb
United Airlines Logo
7:00 a.m. - 6:15 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
19h 15m2 stops Los Angeles Houston George Bush Intcntl
United Airlines Logo
7:40 a.m. - 9:59 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
18h 19m2 stops Houston George Bush Intcntl Los Angeles
C$ 857United Airlines
Sat, 20 Feb - Sat, 27 Feb
American Airlines Logo
11:40 p.m. - 4:11 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 31m1 stop Dallas/Fort Worth
American Airlines Logo
1:20 a.m. - 5:08 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
19h 48m1 stop Dallas/Fort Worth
C$ 859American Airlines
Thu, 21 Jan - Tue, 26 Jan
United Airlines Logo
7:00 a.m. - 12:36 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 36m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
1:00 p.m. - 9:41 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 41m1 stop Newark
C$ 862United 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 C$ 693 to C$ 1,102. The lowest price found in the past 5 days was C$ 785, on Southwest.

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 10% cheaper than the average day, while Friday is the most expensive, with prices 6% higher.

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

•September is the cheapest month to fly from Seattle to San Juan Luis Munoz Marin Intl Airport at C$ 698 round-trip.
•December (C$ 1,336) and July (C$ 996) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 91% 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 47% 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

C$ 393
Beat the crowds with an average 45% drop in traveller numbers.
The most popular month to fly with an average 32% increase in traveller numbers.
One-way flight from Seattle to San Juan Luis Munoz Marin Intl Airport

When to book flights from Seattle to Luis Munoz Marin Intl

Are your dates flexible? Find out the best times to travel from Seattle to Luis Munoz Marin Intl 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.

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

    A direct flight from Seattle to San Juan Luis Munoz Marin Intl Airport takes 00m, covering 9,643 km.

  • 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 C$ 693 to C$ 1,102, with an average of C$ 854 over the past 12 months. Anything below C$ 693 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 C$ 854 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 C$ 785 to C$ 6,342. That means the highest observed fare was about 8x 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 C$ 458, which is 8% 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 averaging C$ 58 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) – 17% of one-stop connections
    • Dallas/Fort Worth (DFW) – 14% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 11% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 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 16% on flights from Seattle to San Juan Luis Munoz Marin Intl Airport. Saturday is the cheapest departure day at C$ 770 round-trip on average, while Friday is the most expensive at C$ 913, a difference of C$ 143.

    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 when travelling 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 12m, compared with 10h 47m via Houston George Bush Intcntl (IAH) and 10h 48m 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 4 hours ahead of Seattle (Atlantic Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which 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 Casa Blanca. 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 C$ 770, about C$ 143 less than Friday fares (16% 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 47% 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 September. Fares historically average C$ 698 round-trip in that month – typically C$ 638 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 Luis Munoz Marin Intl

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