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Cheap flights from Seattle to San Juan from $229

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:13 pm - 12:59 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
23h 46m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
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
$442Frontier
Fri, Nov 6 - Fri, Nov 13
Multiple Airlines Logo
6:39 pm - 4:14 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
17h 35m1 stop Minneapolis St Paul
Multiple Airlines Logo
3:55 pm - 6:33 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
54h 38m2 stops Atlanta Hartsfield-Jackson Los Angeles
$446Multiple Airlines
Fri, Nov 6 - Fri, Nov 13
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 - 9:40 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 40m1 stop Newark
$550United Airlines
Wed, Jan 20 - Wed, Jan 27
United Airlines Logo
10:45 pm - 1:32 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 47m1 stop Newark
United Airlines Logo
1:00 pm - 9:40 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 40m1 stop Newark
$550United Airlines
Tue, Jan 19 - Tue, Jan 26
American Airlines Logo
11:34 pm - 3:03 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 29m2 stops Chicago O'Hare Intl Charlotte Douglas
American Airlines Logo
7:05 am - 11:19 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
20h 14m1 stop Charlotte Douglas
$553American Airlines
Fri, Nov 13 - Sun, Nov 22
American Airlines Logo
9:45 pm - 1:03 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 18m1 stop Charlotte Douglas
American Airlines Logo
7:05 am - 11:19 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
20h 14m1 stop Charlotte Douglas
$553American Airlines
Fri, Nov 13 - Sun, Nov 22
Delta Logo
9:55 pm - 4:50 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
14h 55m1 stop New York John F Kennedy Intl
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
$554Delta
Wed, Jan 27 - Wed, Feb 3
Delta Logo
9:55 pm - 4:50 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
14h 55m1 stop New York John F Kennedy Intl
Delta Logo
2:15 pm - 12:09 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 54m1 stop Atlanta Hartsfield-Jackson
$554Delta
Wed, Jan 27 - Wed, Feb 3
Southwest Logo
9:25 am - 12:50 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 25m2 stops Denver Intl Orlando
Southwest Logo
12:40 pm - 11:00 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
14h 20m2 stops Orlando Denver Intl
$554Southwest
Wed, Dec 2 - Fri, Dec 11
Southwest Logo
5:40 am - 9:55 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
12h 15m2 stops Phoenix Sky Harbor Intl Orlando
Southwest Logo
12:30 pm - 11:35 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
15h 05m2 stops Orlando Chicago Midway
$554Southwest
Tue, Nov 10 - Tue, Nov 17

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Frontier flights from Seattle to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Seattle to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Nov 6
SEA9:13 pmSeattle/Tacoma Intl
23h 46m
2 stops
SJU12:59 amSan Juan Luis Munoz Marin Intl
Nov 13
SJU3:55 pmSan Juan Luis Munoz Marin Intl
27h 17m
2 stops
SEA3:12 pmSeattle/Tacoma Intl
$442
Frontier
Oct 22
SEA4:27 pmSeattle/Tacoma Intl
28h 30m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Nov 3
SJU3:59 pmSan Juan Luis Munoz Marin Intl
27h 13m
2 stops
SEA3:12 pmSeattle/Tacoma Intl
$492
Frontier
Oct 30
SEA9:13 pmSeattle/Tacoma Intl
23h 31m
2 stops
SJU11:44 pmSan Juan Luis Munoz Marin Intl
Nov 3
SJU3:59 pmSan Juan Luis Munoz Marin Intl
27h 13m
2 stops
SEA3:12 pmSeattle/Tacoma Intl
$500

American Airlines flights from Seattle to San Juan Luis Munoz Marin Intl Airport

Our best American Airlines deals on Seattle to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
Nov 13
SEA11:34 pmSeattle/Tacoma Intl
11h 29m
2 stops
SJU3:03 pmSan Juan Luis Munoz Marin Intl
Nov 22
SJU7:05 amSan Juan Luis Munoz Marin Intl
20h 14m
1 stop
SEA11:19 pmSeattle/Tacoma Intl
$553
American Airlines
Jan 2
SEA10:29 pmSeattle/Tacoma Intl
9h 13m
1 stop
SJU11:42 amSan Juan Luis Munoz Marin Intl
Jan 13
SJU10:32 amSan Juan Luis Munoz Marin Intl
18h 27m
1 stop
SEA12:59 amSeattle/Tacoma Intl
$556
American Airlines
Dec 2
SEA5:10 amSeattle/Tacoma Intl
14h 59m
1 stop
SJU12:09 amSan Juan Luis Munoz Marin Intl
Dec 9
SJU6:28 amSan Juan Luis Munoz Marin Intl
15h 54m
1 stop
SEA6:22 pmSeattle/Tacoma Intl
$559

momondo 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.

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Route

Depart

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Price

Cheapest round-trip

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Fri 11/6

9:13 pm-12:59 am

2 stops23h 46m

San Juan Luis Munoz Marin Intl

Fri 11/13

3:55 pm-3:12 pm

2 stops27h 17m

$442

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Fri 11/6

6:39 pm-4:14 pm

1 stop17h 35m

San Juan Luis Munoz Marin Intl

Fri 11/13

3:55 pm-6:33 pm

2 stops54h 38m

$446
Quickest round-trip

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Wed 1/20

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Wed 1/27

1:00 pm-9:40 pm

1 stop12h 40m

$550

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Tue 1/19

10:45 pm-1:32 pm

1 stop10h 47m

San Juan Luis Munoz Marin Intl

Tue 1/26

1:00 pm-9:40 pm

1 stop12h 40m

$550

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Fri 11/13

11:34 pm-3:03 pm

2 stops11h 29m

San Juan Luis Munoz Marin Intl

Sun 11/22

7:05 am-11:19 pm

1 stop20h 14m

$553

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Fri 11/13

9:45 pm-1:03 pm

1 stop11h 18m

San Juan Luis Munoz Marin Intl

Sun 11/22

7:05 am-11:19 pm

1 stop20h 14m

$553

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Wed 1/27

9:55 pm-4:50 pm

1 stop14h 55m

San Juan Luis Munoz Marin Intl

Wed 2/3

7:30 am-8:27 pm

2 stops16h 57m

$554

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Wed 1/27

9:55 pm-4:50 pm

1 stop14h 55m

San Juan Luis Munoz Marin Intl

Wed 2/3

2:15 pm-12:09 am

1 stop13h 54m

$554

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Wed 12/2

9:25 am-12:50 am

2 stops11h 25m

San Juan Luis Munoz Marin Intl

Fri 12/11

12:40 pm-11:00 pm

2 stops14h 20m

$554

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Tue 11/10

5:40 am-9:55 pm

2 stops12h 15m

San Juan Luis Munoz Marin Intl

Tue 11/17

12:30 pm-11:35 pm

2 stops15h 05m

$554

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Seattle to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Seattle and San Juan Luis Munoz Marin Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $464 to $613.
The lowest price recently found on this route was $442.

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

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $494.

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

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $603 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Seattle for as low as $516 on momondo.

Can stopping save me money on Seattle to San Juan Luis Munoz Marin Intl Airport flights?

You could potentially save up to 13% on your flight if you consider stops on a Seattle to San Juan Luis Munoz Marin Intl Airport flight.

How have Seattle to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of October 2026, prices for Seattle to San Juan Luis Munoz Marin Intl Airport flights are approximately 9% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to San Juan Luis Munoz Marin Intl Airport (SEA to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$229

Fastest flight time

9h 18m

Direct flights

None
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Seattle in the past 72 hours is $229. The best round-trip flight deal from Seattle to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $442.
The fastest flight from Seattle to San Juan Luis Munoz Marin Intl Airport takes 9h 18m
There are no direct flights from Seattle to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from Seattle to San Juan Luis Munoz Marin Intl Airport.
Search flight deals

Frequently asked questions about flying from Seattle to San Juan Luis Munoz Marin Intl Airport

  • How far is Seattle/Tacoma Intl to San Juan Luis Munoz Marin Intl by plane?

    San Juan Luis Munoz Marin Intl is 3726.9 mi away from Seattle/Tacoma Intl. By plane, this route typically takes 9h 18m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to San Juan Luis Munoz Marin Intl Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The travel and health documents you'll need for your trip to San Juan Luis Munoz Marin Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Seattle to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Seattle to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $324Free CancellationRating
7.1
3,044 reviews
Search JetBlue flights
DeltaPriceFrom $342Free CancellationRating
7.8
8,626 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
10,283 reviews
Search United Airlines flights
American AirlinesPriceFrom $364Free CancellationRating
7.0
12,129 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.7
313 reviews
Search Sun Country Air flights
SouthwestPriceFrom $454Free CancellationRating
7.9
4,215 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $587Free CancellationRating
7.9
13,008 reviews
Search Alaska Airlines flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Rio Grande
Humacao
Caguas
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Juan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Juan from Seattle.

Can I find flights from Seattle to San Juan with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Juan from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to San Juan?

momondo provides multiple filters to help you find the best flight to San Juan from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to San Juan right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from Seattle and alert you when they change.

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