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Cheap flights from Seattle to San Juan Luis Munoz Marin Intl Airport from C$ 388

SEA — SJU
17 Oct — 24 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Luis Munoz Marin Intl

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Luis Munoz Marin Intl

Mon 2/1111:34 p.m. -
2 stops19h 05m
Thu 5/116:05 a.m. -
2 stops14h 49m
Deal found 17/9C$ 604
Fri 30/109:00 a.m. -
2 stops13h 25m
Wed 4/1112:30 p.m. -
2 stops15h 05m
Deal found 14/9C$ 625
Fri 16/1010:15 p.m. -
1 stop12h 43m
Sat 24/1010:30 a.m. -
1 stop13h 50m
Deal found 13/9C$ 663
Mon 5/109:40 p.m. -
1 stop12h 58m
Tue 20/1010:30 a.m. -
1 stop13h 18m
Deal found 13/9C$ 666
Wed 28/106:15 a.m. -
2 stops12h 40m
Wed 4/1112:30 p.m. -
2 stops13h 50m
Deal found 13/9C$ 701
Wed 21/1011:13 p.m. -
1 stop12h 31m
Thu 22/101:00 a.m. -
1 stop12h 54m
Deal found 13/9C$ 768
Thu 31/121:02 p.m. -
2 stops13h 13m
Wed 20/11:00 p.m. -
1 stop12h 40m
Deal found 17/9C$ 769
Mon 26/107:00 a.m. -
1 stop10h 00m
Tue 3/118:05 a.m. -
2 stops15h 04m
Deal found 13/9C$ 775
Sat 7/115:05 a.m. -
2 stops14h 30m
Mon 16/116:10 a.m. -
2 stops15h 40m
Deal found 15/9C$ 783
Tue 17/119:25 a.m. -
2 stops11h 25m
Thu 26/115:35 a.m. -
2 stops16h 05m
Deal found 16/9C$ 788
Thu 12/115:30 a.m. -
2 stops13h 30m
Mon 16/116:10 a.m. -
2 stops15h 40m
Deal found 14/9C$ 797

Find flight deals from Seattle to Luis Munoz Marin Intl

Round-trip from

C$ 625

One-way from

C$ 388

Popular in

December

Cheapest in

January

Average price

C$ 720
Southwest
  • Southwest
  • 30/10-4/11
  • 4 total stops
  • 28h 30m total
  • Seattle to San Juan
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United Airlines
  • United Airlines
  • 14/10-31/12
  • 1 total stop
  • 10h 20m total
  • Seattle to San Juan
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Wed 9/12

10:55 p.m.-4:55 p.m.

1 stop14h 00m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 388

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Sat 17/10

7:25 p.m.-1:45 p.m.

2 stops15h 20m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 388

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Sat 14/11

7:55 p.m.-12:55 p.m.

2 stops13h 00m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 388
Quickest round-trip

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Wed 7/10

5:00 a.m.-5:38 p.m.

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 388

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Sat 10/10

7:00 a.m.-11:50 p.m.

2 stops13h 50m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 388

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 13/10

4:35 p.m.-11:57 a.m.

2 stops16h 22m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 450

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Mon 1/3

3:51 p.m.-4:36 p.m.

3 stops20h 45m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 450

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Wed 11/11

12:20 p.m.-1:32 p.m.

3 stops21h 12m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 450

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Wed 16/12

6:08 p.m.-4:19 p.m.

1 stop18h 11m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-8:00 p.m.

Nonstop0h 00m

C$ 470

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Fri 1/1

7:20 a.m.-2:35 a.m.

1 stop15h 15m

San Juan Luis Munoz Marin Intl

Sun 17/1

7:00 a.m.-7:23 p.m.

1 stop16h 23m

C$ 775

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 19 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

The best time to book flights from Seattle to San Juan Luis Munoz Marin Intl Airport is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of C$ 685). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 1,121). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to San Juan Luis Munoz Marin Intl Airport?

Airfare is below average for this route at the moment.

Seattle to San Juan Luis Munoz Marin Intl Airport flights typically cost between C$ 649 and C$ 817 in November.
The cheapest round-trip price found within the last 5 days was C$ 604 on American Airlines (2 Nov-5 Nov).

Related info for your journey

  • What airport do you fly from for flights from Seattle to San Juan Luis Munoz Marin Intl?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to San Juan Luis Munoz Marin Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

  • How long is the flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    There are many flights that can get you from Seattle to San Juan Luis Munoz Marin Intl Airport in 10h 26m. Fly via Delta, Southwest, or United Airlines to get the fastest option. The distance from Seattle to San Juan Luis Munoz Marin Intl Airport is about 5992 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Seattle to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Seattle to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Seattle to Luis Munoz Marin Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to San Juan Luis Munoz Marin Intl Airport (average of C$ 685). Flying from Seattle to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of C$ 1,121). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Bayamón

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Need flexible booking options for your flight to Luis Munoz Marin Intl from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Yes! Start tracking prices for Seattle to Luis Munoz Marin Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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