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Cheap flights from Seattle to San Juan from $182

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Juan departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Frontier Logo
6:25 am - 12:10 amSEA-SJU
14h 45m2 stops
Frontier Logo
12:59 am - 2:40 pmSJU-SEA
16h 41m2 stops
$372Frontier
Find Deal
Thu, Aug 14 - Wed, Aug 20
American Airlines Logo
5:43 pm - 12:47 pmSEA-SJU
16h 04m2 stops
American Airlines Logo
6:10 am - 9:23 pmSJU-SEA
18h 13m2 stops
$377American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
JetBlue Logo
11:40 pm - 4:42 pmSEA-SJU
14h 02m1 stop
JetBlue Logo
12:50 pm - 10:10 pmSJU-SEA
12h 20m1 stop
$378JetBlue
Find Deal
Sat, Oct 11 - Sat, Oct 18
Frontier Logo
7:48 pm - 3:52 pmSEA-SJU
17h 04m2 stops
Frontier Logo
12:59 am - 2:40 pmSJU-SEA
16h 41m2 stops
$379Frontier
Find Deal
Sat, Aug 16 - Thu, Aug 21
Spirit Airlines Logo
5:30 pm - 10:29 amSEA-SJU
13h 59m2 stops
Spirit Airlines Logo
4:43 pm - 4:25 pmSJU-SEA
26h 42m2 stops
$380Spirit Airlines
Find Deal
Fri, Aug 1 - Tue, Aug 5
Frontier Logo
7:00 am - 2:34 amSEA-SJU
16h 34m2 stops
Frontier Logo
9:26 pm - 3:41 pmSJU-SEA
21h 15m2 stops
$381Frontier
Find Deal
Wed, Sep 24 - Thu, Oct 2
Frontier Logo
7:48 pm - 3:52 pmSEA-SJU
17h 04m2 stops
Frontier Logo
8:57 pm - 11:45 amSJU-SEA
17h 48m2 stops
$382Frontier
Find Deal
Sat, Aug 16 - Fri, Aug 22
Spirit Airlines Logo
5:30 pm - 9:50 pmSEA-SJU
25h 20m2 stops
Spirit Airlines Logo
1:37 am - 4:25 pmSJU-SEA
17h 48m2 stops
$388Spirit Airlines
Find Deal
Fri, Aug 8 - Sun, Aug 10
Delta Logo
6:00 am - 11:17 pmSEA-SJU
13h 17m1 stop
Delta Logo
3:30 pm - 12:14 amSJU-SEA
12h 44m1 stop
$414Delta
Find Deal
Mon, Nov 17 - Wed, Dec 3
JetBlue Logo
11:40 pm - 2:54 pmSEA-SJU
12h 14m1 stop
JetBlue Logo
12:50 pm - 10:10 pmSJU-SEA
12h 20m1 stop
$429JetBlue
Find Deal
Sun, Oct 12 - Sat, Oct 18

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
Aug 14
SEA6:25 amSeattle/Tacoma Intl
14h 45m
2 stops
SJU12:10 amSan Juan Luis Munoz Marin Intl
Aug 20
SJU12:59 amSan Juan Luis Munoz Marin Intl
16h 41m
2 stops
SEA2:40 pmSeattle/Tacoma Intl
$372
Find similar
Frontier
Aug 16
SEA7:48 pmSeattle/Tacoma Intl
17h 04m
2 stops
SJU3:52 pmSan Juan Luis Munoz Marin Intl
Aug 21
SJU12:59 amSan Juan Luis Munoz Marin Intl
16h 41m
2 stops
SEA2:40 pmSeattle/Tacoma Intl
$379
Find similar
Frontier
Sep 24
SEA7:00 amSeattle/Tacoma Intl
16h 34m
2 stops
SJU2:34 amSan Juan Luis Munoz Marin Intl
Oct 2
SJU9:26 pmSan Juan Luis Munoz Marin Intl
21h 15m
2 stops
SEA3:41 pmSeattle/Tacoma Intl
$381
Find similar

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

Our best Spirit Airlines deals on Seattle to San Juan Luis Munoz Marin Intl Airport flight tickets
Spirit Airlines
Aug 1
SEA5:30 pmSeattle/Tacoma Intl
13h 59m
2 stops
SJU10:29 amSan Juan Luis Munoz Marin Intl
Aug 5
SJU4:43 pmSan Juan Luis Munoz Marin Intl
26h 42m
2 stops
SEA4:25 pmSeattle/Tacoma Intl
$380
Find similar
Spirit Airlines
Aug 8
SEA5:30 pmSeattle/Tacoma Intl
25h 20m
2 stops
SJU9:50 pmSan Juan Luis Munoz Marin Intl
Aug 10
SJU1:37 amSan Juan Luis Munoz Marin Intl
17h 48m
2 stops
SEA4:25 pmSeattle/Tacoma Intl
$388
Find similar
Spirit Airlines
Aug 1
SEA5:30 pmSeattle/Tacoma Intl
25h 20m
2 stops
SJU9:50 pmSan Juan Luis Munoz Marin Intl
Aug 4
SJU2:40 amSan Juan Luis Munoz Marin Intl
16h 45m
3 stops
SEA4:25 pmSeattle/Tacoma Intl
$401
Find similar

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?

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 $460.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $504. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $693.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is at noon when flights can be purchased for as low as $465. Flights in the evening are often more expensive with an average ticket price of $584.

How far in advance should I book a flight 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 $580 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 $488 on momondo.

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

You could potentially save up to 3% 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 July 2025, prices for Seattle to San Juan Luis Munoz Marin Intl Airport flights are approximately 22% 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

$182

Fastest flight time

9h 16m

Direct flights

None
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Seattle in the past 72 hours is $182. 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 $372.
The fastest flight from Seattle to San Juan Luis Munoz Marin Intl Airport takes 9h 16m
There are no direct flights from Seattle to San Juan Luis Munoz Marin Intl Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - San Juan Luis Munoz Marin Intl Airport.
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  • 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 10h 34m.

  • 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
FrontierPriceFrom $175Free CancellationRating
5.9
3,261 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $233Free CancellationRating
6.3
8,046 reviews
Search Spirit Airlines flights
JetBluePriceFrom $286Free CancellationRating
7.3
2,908 reviews
Search JetBlue flights
American AirlinesPriceFrom $336Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $340Free CancellationRating
7.4
8,858 reviews
Search United Airlines flights
DeltaPriceFrom $360Free CancellationRating
8.0
7,956 reviews
Search Delta flights
Sun Country AirPriceFrom $447Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $490Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,244 reviews
Search Southwest 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
Caguas
Humacao
Rio Grande
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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