SEA - SJU

C$ 313 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
C$ 666
Typical prices: C$ 658-C$ 1,037
JetBlue
Tue 16/10Wed 24/10
SEA - SJU • 1 stop
Cheapest one-way flights
C$ 313
Typical prices: C$ 373-C$ 616
Frontier
Tue 16/10
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
9 weeks
in advance
Our data shows that travellers 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 C$ 625 (round-trip)
Denver Intl (DEN)
Shortest trip • 10h 10m (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

Fri, 16 Oct - Sat, 24 Oct
JetBlue Logo
10:15 p.m. - 1:58 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 43m1 stop New York John F Kennedy Intl
JetBlue Logo
10:30 a.m. - 9:20 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 50m1 stop New York John F Kennedy Intl
C$ 666JetBlue
Fri, 16 Oct - Tue, 20 Oct
JetBlue Logo
11:55 p.m. - 3:14 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 19m1 stop Boston Logan Intl
JetBlue Logo
10:30 a.m. - 8:48 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 18m1 stop New York John F Kennedy Intl
C$ 716JetBlue
Thu, 12 Nov - Mon, 16 Nov
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
6:10 a.m. - 5:50 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 40m2 stops Tampa Denver Intl
C$ 759Southwest
Fri, 30 Oct - Mon, 2 Nov
Southwest Logo
9:00 a.m. - 1:25 a.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 25m2 stops Austin Bergstrom Orlando
Southwest Logo
12:40 p.m. - 12:40 a.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 00m2 stops Orlando Chicago Midway
C$ 768Southwest
Tue, 13 Oct - Wed, 14 Oct
United Airlines Logo
10:48 p.m. - 1:45 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 57m1 stop Newark
United Airlines Logo
1:00 a.m. - 11:27 a.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 27m2 stops Newark Chicago O'Hare Intl
C$ 771United Airlines
Mon, 25 Jan - Thu, 4 Feb
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. - 9:40 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 40m1 stop Newark
C$ 773United Airlines
Wed, 20 Jan - Wed, 10 Feb
Delta Logo
6:00 a.m. - 11:50 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:15 p.m. - 10:05 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
10h 50m1 stop Detroit Metropolitan Wayne County
C$ 778Delta
Tue, 1 Dec - Wed, 9 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
10:45 a.m. - 10:15 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 30m2 stops Orlando Sacramento Intl
C$ 799Southwest
Tue, 1 Dec - Sat, 5 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. - 4:45 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 05m2 stops Orlando Chicago Midway
C$ 809Southwest
Wed, 20 Jan - Sat, 6 Feb
Delta Logo
5:45 a.m. - 11:50 p.m.SEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
14h 05m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
7:00 a.m. - 7:23 p.m.SJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
16h 23m1 stop New York John F Kennedy Intl
C$ 816Delta
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 C$ 666. Prices are typical for this route right now, with typical round-trip fares ranging from C$ 658 to C$ 1,037. The lowest price found in the past 5 days was C$ 666 on JetBlue.

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 and 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 C$ 636 round-trip.
•December (C$ 1,107) and July (C$ 983) 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

C$ 313
Best time to beat the crowds (22% less expensive on average)
Flights 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 route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

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

    Only First Class is available on flights from Seattle to San Juan Luis Munoz Marin Intl Airport.

  • 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 0h 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$ 658 to C$ 1,037, with an average of C$ 813 over the past 12 months. Anything below C$ 658 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 C$ 813. Book 9 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$ 666 to C$ 6,314. That means the highest observed fare was about 9x 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$ 384, which is 21% 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 C$ 6 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 C$ 722 round-trip on average, while Friday is the most expensive at C$ 917 – a C$ 195 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 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 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.

  • 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 instead of Friday. On this route, Saturday flights average C$ 722 – about C$ 195 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 C$ 636 round-trip in that month – typically C$ 471 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.
    - Hampton Inn & Suites by Hilton San Juan
    - Coral by The Sea Hotel
    - San Juan Airport Hotel

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