$135+ Cheap flights from Washington 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Mar 3 — Mar 101
1 adult, Economy
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Find cheap flights from Washington to San Juan with Cheapflights
1. Tell us where you want to go
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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Cheapest flights from Washington to San JuanExplore the most affordable flight options available from Washington to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 1, 2026.
Explore the most affordable flight options available from Washington to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 1, 2026.
This American Airlines deal was found by Cheapflights users on 1/31. 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 3/26:13 pm
SEA
- SJU
2 stops11h 47m
American Airlines
Tue 3/35:25 pm
SJU
- SEA
1 stop10h 59m
American Airlines
Deal found 1/31![American Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 1/31. 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 3/17:10 am
SEA
- SJU
1 stop12h 49m
Delta
Tue 3/106:15 am
SJU
- SEA
2 stops17h 33m
Delta
Deal found 1/31![Delta logo]()
$384
This Trip.com deal was found by Cheapflights users on 1/31. 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.
Sat 2/281:16 pm
SEA
- SJU
2 stops18h 21m
Multiple Airlines
Sat 3/77:44 pm
SJU
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 1/31. 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.
Sun 3/16:25 pm
SEA
- SJU
2 stops12h 05m
Southwest
Wed 3/410:20 am
SJU
- SEA
2 stops15h 30m
Southwest
Deal found 1/31![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 4/911:05 pm
SEA
- SJU
1 stop11h 40m
United Airlines
Thu 4/161:40 pm
SJU
- SEA
1 stop12h 16m
United Airlines
Deal found 1/31![United Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Mon 5/43:56 pm
SJU
- SEA
1 stop11h 01m
United Airlines
Deal found 2/1![United Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 1/31. 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 4/216:00 am
GEG
- SJU
1 stop14h 01m
American Airlines
Tue 4/285:45 am
SJU
- GEG
2 stops14h 10m
American Airlines
Deal found 1/31![American Airlines logo]()
$424
This Faresmojo deal was found by Cheapflights users on 2/1. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:59 pm
SEA
- SJU
1 stop10h 48m
JetBlue
Sun 6/211:45 pm
SJU
- SEA
1 stop11h 55m
JetBlue
Deal found 2/1![JetBlue logo]()
$427
This United Airlines deal was found by Cheapflights users on 1/30. 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 5/167:36 pm
SEA
- SJU
2 stops13h 58m
United Airlines
Sat 5/237:20 am
SJU
- SEA
1 stop11h 20m
United Airlines
Deal found 1/30![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:00 am
SEA
- SJU
1 stop10h 22m
United Airlines
Thu 12/32:05 am
SJU
- SEA
1 stop12h 54m
United Airlines
Deal found 2/1![United Airlines logo]()
$440
This Southwest deal was found by Cheapflights users on 1/30. 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 2/235:50 am
PDX
- SJU
2 stops14h 50m
Southwest
Fri 2/276:00 am
SJU
- PDX
2 stops12h 55m
Southwest
Deal found 1/30![Southwest logo]()
$446
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:38 pm
PDX
- SJU
2 stops12h 22m
American Airlines
Wed 4/153:10 pm
SJU
- PDX
1 stop11h 43m
American Airlines
Deal found 2/1![American Airlines logo]()
$449
Best flights from Washington to San JuanDiscover carefully curated flight deals from Washington to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 1, 2026.
Discover carefully curated flight deals from Washington to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 1, 2026.
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/110:57 pm
SEA
- SJU
1 stop10h 43m
American Airlines
Wed 3/47:00 am
SJU
- SEA
2 stops12h 57m
American Airlines
Deal found 2/1![American Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:17 am
SEA
- SJU
1 stop10h 05m
United Airlines
Tue 3/107:05 am
SJU
- SEA
2 stops14h 58m
United Airlines
Deal found 2/1![United Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 2/1. 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.
Sat 4/256:00 am
GEG
- SJU
2 stops14h 12m
Delta
Thu 4/307:30 am
SJU
- GEG
2 stops16h 35m
Delta
Deal found 2/1![Delta logo]()
$424
This Southwest deal was found by Cheapflights users on 1/30. 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 2/235:50 am
PDX
- SJU
2 stops14h 50m
Southwest
Fri 2/276:00 am
SJU
- PDX
2 stops12h 55m
Southwest
Deal found 1/30![Southwest logo]()
$446
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:30 am
SEA
- SJU
1 stop11h 08m
United Airlines
Mon 5/43:56 pm
SJU
- SEA
1 stop11h 01m
United Airlines
Deal found 2/1![United Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 1/30. 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 4/281:33 pm
GEG
- SJU
2 stops18h 15m
American Airlines
Tue 5/55:45 am
SJU
- GEG
2 stops14h 10m
American Airlines
Deal found 1/30![American Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 1/31. 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 3/116:00 am
GEG
- SJU
2 stops15h 15m
Southwest
Tue 3/1710:10 am
SJU
- GEG
2 stops14h 25m
Southwest
Deal found 1/31![Southwest logo]()
$462
This American Airlines deal was found by Cheapflights users on 1/30. 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 4/216:00 am
GEG
- SJU
1 stop14h 01m
American Airlines
Tue 4/286:47 am
SJU
- GEG
1 stop13h 08m
American Airlines
Deal found 1/30![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/245:00 am
GEG
- SJU
2 stops15h 36m
United Airlines
Tue 3/32:25 pm
SJU
- GEG
1 stop10h 52m
United Airlines
Deal found 1/31![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 1/30. 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 4/146:45 am
GEG
- SJU
2 stops13h 16m
American Airlines
Fri 4/2411:59 pm
SJU
- GEG
2 stops17h 20m
American Airlines
Deal found 1/30![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 1/30. 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 5/167:36 pm
SEA
- SJU
2 stops13h 58m
United Airlines
Sat 5/237:20 am
SJU
- SEA
1 stop11h 20m
United Airlines
Deal found 1/30![United Airlines logo]()
$434
This Southwest deal was found by Cheapflights users on 2/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:25 am
PDX
- SJU
2 stops13h 10m
Southwest
Wed 4/88:10 am
SJU
- PDX
2 stops14h 05m
Southwest
Deal found 2/1![Southwest logo]()
$481
This Delta deal was found by Cheapflights users on 1/30. 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 3/186:30 am
PSC
- SJU
2 stops13h 45m
Delta
Tue 3/246:15 am
SJU
- PSC
2 stops16h 41m
Delta
Deal found 1/30![Delta logo]()
$574
This Southwest deal was found by Cheapflights users on 1/31. 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 3/25:50 am
PDX
- SJU
2 stops14h 50m
Southwest
Mon 3/95:30 am
SJU
- PDX
2 stops11h 55m
Southwest
Deal found 1/31![Southwest logo]()
$481
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:00 am
SEA
- SJU
1 stop10h 34m
United Airlines
Thu 4/161:40 pm
SJU
- SEA
1 stop12h 16m
United Airlines
Deal found 2/1![United Airlines logo]()
$438
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:57 pm
SEA
- SJU
2 stops11h 52m
American Airlines
Sat 5/23:10 pm
SJU
- SEA
1 stop12h 41m
American Airlines
Deal found 2/1![American Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 1/31. 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 2/276:30 am
GEG
- SJU
2 stops15h 05m
Southwest
Fri 3/68:00 am
SJU
- GEG
2 stops18h 10m
Southwest
Deal found 1/31![Southwest logo]()
$499
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:52 pm
SEA
- SJU
1 stop12h 50m
United Airlines
Sat 7/182:05 am
SJU
- SEA
1 stop11h 27m
United Airlines
Deal found 2/1![United Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 1/31. 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 3/246:00 am
GEG
- SJU
1 stop13h 31m
American Airlines
Tue 3/316:33 am
SJU
- GEG
1 stop13h 21m
American Airlines
Deal found 1/31![American Airlines logo]()
$484
This Southwest deal was found by Cheapflights users on 1/31. 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.
Tue 6/237:40 pm
PDX
- SJU
2 stops11h 45m
Southwest
Fri 7/35:30 am
SJU
- PDX
1 stop13h 50m
Southwest
Deal found 1/31![Southwest logo]()
$516
This United Airlines deal was found by Cheapflights users on 1/30. 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 2/238:17 am
SEA
- SJU
1 stop10h 05m
United Airlines
Thu 2/263:46 pm
SJU
- SEA
1 stop11h 14m
United Airlines
Deal found 1/30![United Airlines logo]()
$474
This Southwest deal was found by Cheapflights users on 1/30. 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 2/2710:15 am
PDX
- SJU
2 stops11h 20m
Southwest
Fri 3/66:30 am
SJU
- PDX
2 stops11h 55m
Southwest
Deal found 1/30![Southwest logo]()
$531
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:00 am
PSC
- SJU
2 stops17h 32m
American Airlines
Mon 4/2711:59 pm
SJU
- PSC
2 stops18h 43m
American Airlines
Deal found 2/1![American Airlines logo]()
$551
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2211:59 pm
PDX
- SJU
1 stop12h 43m
United Airlines
Sat 5/301:00 am
SJU
- PDX
1 stop11h 21m
United Airlines
Deal found 2/1![United Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1110:54 pm
PDX
- SJU
1 stop9h 55m
United Airlines
Fri 5/11:00 am
SJU
- PDX
2 stops15h 15m
United Airlines
Deal found 2/1![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:00 am
PDX
- SJU
1 stop10h 50m
United Airlines
Thu 6/183:56 pm
SJU
- PDX
1 stop10h 56m
United Airlines
Deal found 2/1![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Sun 3/110:38 pm
PDX
- SJU
1 stop10h 11m
United Airlines
Wed 3/43:46 pm
SJU
- PDX
1 stop11h 13m
United Airlines
Deal found 1/30![United Airlines logo]()
$530
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/235:00 am
PSC
- SJU
1 stop9h 25m
United Airlines
Thu 2/267:40 am
SJU
- PSC
2 stops17h 37m
United Airlines
Deal found 1/31![United Airlines logo]()
$542
Last-minute flights from Washington to San JuanDiscover last-minute flight deals from Washington to San Juan. Data last updated February 1, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to San Juan. Data last updated February 1, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:37 am
SEA
- SJU
1 stop13h 54m
American Airlines
Wed 3/42:30 pm
SJU
- SEA
1 stop11h 27m
American Airlines
Deal found 2/1![American Airlines logo]()
$498
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 2/199:44 pm
PDX
- SJU
1 stop20h 05m
American Airlines
Thu 2/267:33 am
SJU
- PDX
2 stops13h 40m
American Airlines
Deal found 1/31![American Airlines logo]()
$503
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:13 pm
SEA
- SJU
2 stops11h 47m
American Airlines
Tue 3/31:58 pm
SJU
- SEA
2 stops13h 06m
American Airlines
Deal found 2/1![American Airlines logo]()
$450
This Southwest deal was found by Cheapflights users on 1/30. 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 2/235:50 am
PDX
- SJU
2 stops14h 50m
Southwest
Fri 2/276:00 am
SJU
- PDX
2 stops12h 55m
Southwest
Deal found 1/30![Southwest logo]()
$446
This United Airlines deal was found by Cheapflights users on 1/30. 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 2/2311:35 pm
SEA
- SJU
1 stop11h 05m
United Airlines
Wed 2/252:05 am
SJU
- SEA
2 stops17h 36m
United Airlines
Deal found 1/30![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/245:00 am
GEG
- SJU
2 stops15h 36m
United Airlines
Tue 3/32:25 pm
SJU
- GEG
1 stop10h 52m
United Airlines
Deal found 1/31![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 1/31. 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 2/2412:25 pm
GEG
- SJU
2 stops17h 35m
American Airlines
Tue 3/38:00 am
SJU
- GEG
2 stops12h 54m
American Airlines
Deal found 1/31![American Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 1/31. 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 2/279:44 pm
PDX
- SJU
1 stop20h 05m
American Airlines
Tue 3/101:23 pm
SJU
- PDX
1 stop13h 21m
American Airlines
Deal found 1/31![American Airlines logo]()
$494
This Southwest deal was found by Cheapflights users on 1/31. 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 2/276:30 am
GEG
- SJU
2 stops15h 05m
Southwest
Fri 3/68:00 am
SJU
- GEG
2 stops18h 10m
Southwest
Deal found 1/31![Southwest logo]()
$499
This American Airlines deal was found by Cheapflights users on 1/31. 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 2/273:10 pm
GEG
- SJU
2 stops14h 50m
American Airlines
Fri 3/67:33 am
SJU
- GEG
1 stop17h 39m
American Airlines
Deal found 1/31![American Airlines logo]()
$515
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2811:57 pm
SEA
- SJU
1 stop19h 34m
American Airlines
Sat 5/26:00 am
SJU
- SEA
1 stop18h 23m
American Airlines
Deal found 2/1![American Airlines logo]()
$384
This Trip.com deal was found by Cheapflights users on 1/31. 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.
Sat 2/281:16 pm
SEA
- SJU
2 stops18h 21m
Multiple Airlines
Sat 3/77:44 pm
SJU
- SEA
2 stops18h 35m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$391
One-way flights from Washington to San JuanSearch for one-way flight options from Washington to San Juan. Find affordable one-way fares based on user searches. Data last updated February 1, 2026.
Search for one-way flight options from Washington to San Juan. Find affordable one-way fares based on user searches. Data last updated February 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:48 pm
PDX
- SJU
2 stops24h 42m
Frontier
Deal found 2/1![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:57 pm
SEA
- SJU
2 stops44h 01m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Tue 5/510:42 am
SEA
- SJU
2 stops24h 24m
Frontier
Deal found 1/30![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/269:35 pm
SEA
- SJU
2 stops58h 32m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 3/169:36 pm
SEA
- SJU
3 stops47h 22m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:24 pm
SEA
- SJU
2 stops40h 53m
Frontier
Deal found 2/1![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Sun 3/112:30 pm
SEA
- SJU
2 stops43h 07m
Multiple Airlines
Deal found 1/30![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/910:08 pm
SEA
- SJU
3 stops40h 50m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/159:35 pm
SEA
- SJU
3 stops47h 23m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 1/31. 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.
Tue 3/1010:08 pm
SEA
- SJU
3 stops24h 11m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:48 pm
PDX
- SJU
3 stops25h 10m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$180
This Southwest deal was found by Cheapflights users on 1/31. 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.
Tue 3/36:30 am
PDX
- SJU
2 stops12h 40m
Southwest
Deal found 1/31![Southwest logo]()
$188
Find flight deals from Washington to San Juan
Keep the following information in mind while searching for Washington to San Juan flight deals. Data was last updated February 1, 2026.
Round-trip from | $379 (American Airlines) |
|---|---|
One-way from | $135 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $535 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 February 1, 2026.
Use the filters below to find and compare flights from Washington to San Juan that are best for you.
Fly from
Washington
Fly to
San Juan
Route
Depart
Return
Price
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sun 3/1
10:57 pm-1:40 pm
1 stop10h 43m
San Juan Luis Munoz Marin Intl
Wed 3/4
7:00 am-3:57 pm
2 stops12h 57m
$384
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Tue 3/3
8:17 am-10:22 pm
1 stop10h 05m
San Juan Luis Munoz Marin Intl
Tue 3/10
7:05 am-7:03 pm
2 stops14h 58m
$384
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Mon 4/27
6:30 am-8:38 pm
1 stop11h 08m
San Juan Luis Munoz Marin Intl
Mon 5/4
3:56 pm-11:57 pm
1 stop11h 01m
$420
SpokaneSan Juan
GEG - SJU
GEGSJU
Spokane
Sat 4/25
6:00 am-11:12 pm
2 stops14h 12m
San Juan Luis Munoz Marin Intl
Thu 4/30
7:30 am-9:05 pm
2 stops16h 35m
$424
SpokaneSan Juan
GEG - SJU
GEGSJU
Spokane
Tue 4/28
1:33 pm-10:48 am
2 stops18h 15m
San Juan Luis Munoz Marin Intl
Tue 5/5
5:45 am-4:55 pm
2 stops14h 10m
$424
SpokaneSan Juan
GEG - SJU
GEGSJU
Spokane
Tue 4/21
6:00 am-11:01 pm
1 stop14h 01m
San Juan Luis Munoz Marin Intl
Tue 4/28
6:47 am-4:55 pm
1 stop13h 08m
$424
SpokaneSan Juan
GEG - SJU
GEGSJU
Spokane
Tue 2/24
5:00 am-12:36 am
2 stops15h 36m
San Juan Luis Munoz Marin Intl
Tue 3/3
2:25 pm-9:17 pm
1 stop10h 52m
$424
SpokaneSan Juan
GEG - SJU
GEGSJU
Spokane
Tue 4/14
6:45 am-11:01 pm
2 stops13h 16m
San Juan Luis Munoz Marin Intl
Fri 4/24
11:59 pm-2:19 pm
2 stops17h 20m
$424
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Sat 5/16
7:36 pm-12:34 pm
2 stops13h 58m
San Juan Luis Munoz Marin Intl
Sat 5/23
7:20 am-3:40 pm
1 stop11h 20m
$434
SeattleSan Juan
SEA - SJU
SEASJU
Seattle/Tacoma Intl
Thu 4/9
7:00 am-8:34 pm
1 stop10h 34m
San Juan Luis Munoz Marin Intl
Thu 4/16
1:40 pm-10:56 pm
1 stop12h 16m
$438
Showing 1-10 of 58 results
Best time to book a flight from Washington to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Washington with our price prediction graph.
SEA-SJU
GEG-SJU
PDX-SJU
PSC-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 Washington to San Juan
USWA-PR1
SEA-SJU
GEG-SJU
PDX-SJU
PSC-SJU
What is the cheapest month to book a flight from State of Washington to San Juan?
Currently, March is the cheapest month in which you can book a flight from State of Washington to San Juan (average of $289). Flying from State of Washington to San Juan in July is currently the most expensive (average of $454). 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.
Related info for your journey
Find useful and relevant information for your journey from Washington to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Washington to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from Washington to San Juan
Discover the top 9 airlines that operate flights from Washington 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 February 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$191 | Average$341 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$282 | Average$525 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$320 | Average$599 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$363 | Average$712 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$363 | Average$678 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$810 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$494 | Average$690 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$598 | Average$880 | FlexibilityNo cancel fee | On-time75% |