SEA to SJU from $320 in economy – flightdeals.net

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American Airlines

AAAmerican Airlines

Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

$509 USD

-37%$320 USD

Verified about 6 hours ago

August 2026

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27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12$672 13$662 14$702 15$662 16$662 17$662 18$662 19$667 20$662 21$662 22$662 23$662 24$662 25$662 26$667 27$662 28$662 29$662 30$662 31$621 1$526 2$412 3$432 4$432 5$432 6$407

Fair Availability

32% of dates checked are available within 10% of the lowest price

Monday, August 3rd, 2026

0 round-trip options

No flight details available for this date.