Cheap flights from Seattle to La Asuncion

View AU$210 flight on Sat, 30 Aug. 2025Opens in a new window

Popular airlines from Seattle to La Asuncion

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Seattle (SEA) to La Asuncion (SJO)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 30 Aug. - Sat, 6 Sep.
SEA
Seattle
SJO
San José
AU$714 Return, found 6 days ago
AU$714
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 30 Aug. from Seattle to San José, returning Sat, 6 Sep., priced at AU$714 found 6 days ago
Alaska Airlines
Sat, 30 Aug. - Sat, 6 Sep.
SEA
Seattle
SJO
San José
AU$758 Return, found 6 days ago
AU$758
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 30 Aug. from Seattle to San José, returning Sat, 6 Sep., priced at AU$758 found 6 days ago
Alaska Airlines
Sat, 30 Aug. - Sat, 6 Sep.
SEA
Seattle
SJO
San José
AU$790 Return, found 6 days ago
AU$790
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 30 Aug. from Seattle to San José, returning Sat, 6 Sep., priced at AU$790 found 6 days ago

Find the cheapest month to fly from Seattle (SEA) to San José (SJO)

September is typically the cheapest month to fly

From AU$498 - AU$892 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.