$227+ Cheap flights from Seattle (SEA) to San Juan
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jul 7 — Jul 141
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to San Juan with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Best
Last-minute
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Cheapest flights from Seattle to San JuanExplore the most affordable flight options available from Seattle to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
Explore the most affordable flight options available from Seattle to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Sat 9/51:00 am
SJU
- SEA
2 stops18h 14m
United Airlines
Deal found 6/4![United Airlines logo]()
$449
This Cheapflightsfares deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:55 pm
SEA
- SJU
1 stop11h 28m
JetBlue
Wed 9/3010:30 am
SJU
- SEA
1 stop13h 12m
JetBlue
Deal found 6/3![JetBlue logo]()
$450
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:05 pm
SEA
- SJU
1 stop10h 55m
Delta
Sat 12/127:15 am
SJU
- SEA
2 stops15h 15m
Delta
Deal found 6/2![Delta logo]()
$454
This American Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:00 am
SEA
- SJU
1 stop10h 56m
American Airlines
Wed 12/98:18 am
SJU
- SEA
1 stop15h 24m
American Airlines
Deal found 6/5![American Airlines logo]()
$457
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:21 pm
SEA
- SJU
1 stop15h 17m
American Airlines
Sat 9/512:55 am
SJU
- SEA
1 stop11h 34m
American Airlines
Deal found 6/4![American Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:05 pm
SEA
- SJU
1 stop10h 55m
Delta
Sat 10/37:00 am
SJU
- SEA
2 stops16h 16m
Delta
Deal found 6/5![Delta logo]()
$464
This American Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:10 am
SEA
- SJU
1 stop15h 49m
American Airlines
Tue 9/82:33 pm
SJU
- SEA
1 stop11h 23m
American Airlines
Deal found 6/6![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:34 pm
SEA
- SJU
1 stop18h 11m
American Airlines
Sun 10/410:16 am
SJU
- SEA
1 stop16h 36m
American Airlines
Deal found 6/5![American Airlines logo]()
$473
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:56 pm
SEA
- SJU
2 stops12h 44m
American Airlines
Tue 9/226:27 am
SJU
- SEA
2 stops16h 21m
American Airlines
Deal found 6/2![American Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:00 am
SEA
- SJU
1 stop12h 38m
United Airlines
Tue 9/87:00 am
SJU
- SEA
1 stop10h 52m
United Airlines
Deal found 6/2![United Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:00 am
SEA
- SJU
1 stop10h 38m
United Airlines
Tue 8/187:00 am
SJU
- SEA
1 stop10h 52m
United Airlines
Deal found 6/2![United Airlines logo]()
$482
Best flights from Seattle to San JuanDiscover carefully curated flight deals from Seattle to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
Discover carefully curated flight deals from Seattle to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:45 am
SEA
- SJU
2 stops14h 10m
Delta
Mon 11/237:15 am
SJU
- SEA
2 stops15h 15m
Delta
Deal found 6/1![Delta logo]()
$454
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:07 am
SEA
- SJU
2 stops15h 29m
United Airlines
Wed 12/91:00 pm
SJU
- SEA
2 stops15h 14m
United Airlines
Deal found 6/2![United Airlines logo]()
$544
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:20 pm
SEA
- SJU
2 stops13h 10m
Southwest
Fri 7/39:50 am
SJU
- SEA
2 stops12h 55m
Southwest
Deal found 6/5![Southwest logo]()
$666
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:20 am
SEA
- SJU
1 stop12h 35m
Delta
Sat 12/57:15 am
SJU
- SEA
1 stop16h 08m
Delta
Deal found 6/1![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:20 am
SEA
- SJU
1 stop12h 35m
Delta
Wed 12/93:10 pm
SJU
- SEA
1 stop10h 55m
Delta
Deal found 6/3![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:53 pm
SEA
- SJU
1 stop12h 08m
Delta
Tue 11/107:15 am
SJU
- SEA
2 stops18h 50m
Delta
Deal found 6/2![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:00 am
SEA
- SJU
1 stop13h 13m
Delta
Sat 12/57:15 am
SJU
- SEA
1 stop16h 08m
Delta
Deal found 6/4![Delta logo]()
$560
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:35 pm
SEA
- SJU
2 stops13h 10m
Delta
Sun 11/157:15 am
SJU
- SEA
2 stops15h 15m
Delta
Deal found 6/1![Delta logo]()
$675
Last-minute flights from Seattle to San JuanDiscover last-minute flight deals from Seattle to San Juan. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to San Juan. Data last updated June 7, 2026 and is based on user searches.
This Faresmojo deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:28 pm
SEA
- SJU
1 stop12h 46m
JetBlue
Mon 7/611:50 am
SJU
- SEA
1 stop12h 14m
JetBlue
Deal found 6/5![JetBlue logo]()
$606
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:05 am
SEA
- SJU
1 stop15h 45m
American Airlines
Thu 7/97:25 am
SJU
- SEA
1 stop18h 35m
American Airlines
Deal found 6/3![American Airlines logo]()
$589
This American Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Mon 7/2010:35 am
SJU
- SEA
1 stop16h 32m
American Airlines
Deal found 6/6![American Airlines logo]()
$574
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:30 am
SEA
- SJU
2 stops13h 00m
Southwest
Sun 8/25:45 am
SJU
- SEA
1 stop16h 10m
Southwest
Deal found 6/3![Southwest logo]()
$564
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:05 am
SEA
- SJU
1 stop10h 30m
Southwest
Mon 8/310:20 am
SJU
- SEA
2 stops14h 30m
Southwest
Deal found 6/3![Southwest logo]()
$615
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Wed 7/292:25 pm
SJU
- SEA
1 stop11h 31m
American Airlines
Deal found 6/3![American Airlines logo]()
$569
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:10 am
SEA
- SJU
1 stop14h 23m
American Airlines
Tue 7/285:45 am
SJU
- SEA
1 stop14h 02m
American Airlines
Deal found 6/3![American Airlines logo]()
$619
This American Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:10 am
SEA
- SJU
1 stop14h 49m
American Airlines
Tue 8/412:55 am
SJU
- SEA
1 stop11h 34m
American Airlines
Deal found 6/5![American Airlines logo]()
$524
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:00 am
SEA
- SJU
2 stops11h 50m
Southwest
Wed 8/510:30 am
SJU
- SEA
2 stops12h 55m
Southwest
Deal found 6/5![Southwest logo]()
$616
This Southwest deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3111:05 am
SEA
- SJU
1 stop10h 30m
Southwest
Mon 8/176:30 am
SJU
- SEA
2 stops14h 05m
Southwest
Deal found 6/5![Southwest logo]()
$595
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:00 am
SEA
- SJU
1 stop9h 38m
United Airlines
Sun 8/22:05 am
SJU
- SEA
1 stop11h 42m
United Airlines
Deal found 6/5![United Airlines logo]()
$602
One-way flights from Seattle to San JuanSearch for one-way flight options from Seattle to San Juan. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
Search for one-way flight options from Seattle to San Juan. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:49 pm
SEA
- SJU
1 stop12h 53m
United Airlines
Deal found 6/2![United Airlines logo]()
$227
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:42 pm
SEA
- SJU
1 stop20h 47m
American Airlines
Deal found 6/4![American Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm
SEA
- SJU
1 stop13h 39m
Delta
Deal found 6/4![Delta logo]()
$232
This American Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:05 am
SEA
- SJU
1 stop15h 45m
American Airlines
Deal found 6/2![American Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:53 pm
SEA
- SJU
2 stops48h 35m
Frontier
Deal found 6/2![Frontier logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/43:33 pm
SEA
- SJU
2 stops29h 55m
Frontier
Deal found 6/2![Frontier logo]()
$258
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:10 pm
SEA
- SJU
2 stops15h 24m
United Airlines
Deal found 6/2![United Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:20 pm
SEA
- SJU
2 stops15h 37m
United Airlines
Deal found 6/5![United Airlines logo]()
$277
This Trip.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:53 pm
SEA
- SJU
2 stops32h 04m
Frontier
Deal found 6/2![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:41 pm
SEA
- SJU
2 stops25h 56m
Frontier
Deal found 6/4![Frontier logo]()
$281
Find flight deals from Seattle to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 7, 2026.
Round-trip from | $449 (United Airlines) |
|---|---|
One-way from | $227 (United Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $626 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
Use the filters below to find and compare flights from Seattle to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 11/18
5:45 am-11:55 pm
2 stops14h 10m
San Juan Luis Munoz Marin Intl
Mon 11/23
7:15 am-6:30 pm
2 stops15h 15m
$454
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 11/26
7:20 am-11:55 pm
1 stop12h 35m
San Juan Luis Munoz Marin Intl
Sat 12/5
7:15 am-7:23 pm
1 stop16h 08m
$454
Quickest round-trip
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 12/2
7:20 am-11:55 pm
1 stop12h 35m
San Juan Luis Munoz Marin Intl
Wed 12/9
3:10 pm-10:05 pm
1 stop10h 55m
$454
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 11/6
11:53 pm-4:01 pm
1 stop12h 08m
San Juan Luis Munoz Marin Intl
Tue 11/10
7:15 am-10:05 pm
2 stops18h 50m
$454
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Wed 12/2
5:07 am-12:36 am
2 stops15h 29m
San Juan Luis Munoz Marin Intl
Wed 12/9
1:00 pm-12:14 am
2 stops15h 14m
$544
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Fri 11/27
6:00 am-11:13 pm
1 stop13h 13m
San Juan Luis Munoz Marin Intl
Sat 12/5
7:15 am-7:23 pm
1 stop16h 08m
$560
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 6/29
7:20 pm-11:30 am
2 stops13h 10m
San Juan Luis Munoz Marin Intl
Fri 7/3
9:50 am-7:45 pm
2 stops12h 55m
$666
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 11/8
7:35 pm-12:45 pm
2 stops13h 10m
San Juan Luis Munoz Marin Intl
Sun 11/15
7:15 am-6:30 pm
2 stops15h 15m
$675
Cheapest one-way
Quickest one-way
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 10/4
10:40 pm-12:13 pm
1 stop10h 33m
$227
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 8/10
7:25 pm-11:00 am
2 stops12h 35m
$227
Showing 1-10 of 16 resultsSorted by cheapest first
Best time to book a flight from Seattle to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Seattle with our price prediction graph.
SEA-PR1
SEA-SJU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to San Juan
SEA-PR1
SEA-SJU
What is the cheapest month to book a flight from Seattle to San Juan?
Currently, February is the cheapest month in which you can book a flight from Seattle to San Juan (average of $182). Flying from Seattle to San Juan in January is currently the most expensive (average of $363). 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?
How far ahead should I book a flight from Seattle to San Juan?
The best time to book flights from Seattle to San Juan is 89 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.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated June 7, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Seattle to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
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Seattle and San Juan flights
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Top 8 airlines flying from Seattle to San Juan
Discover the top 8 airlines that operate flights from Seattle to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$282 | Average$462 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$342 | Average$662 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$363 | Average$561 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$365 | Average$585 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$828 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$494 | Average$616 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$587 | Average$727 | FlexibilityNo cancel fee | On-time75% |