Cheapest one-way flights from Seattle to Buenos Aires in December from 366€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Buenos Aires (EZE) in December 2025 (see full year).

One-Way flights

04 Dec Hawaiian Airlines
03 Dec Hawaiian Airlines
26 Dec Hawaiian Airlines
29 Dec LATAM Airlines Group
11 Dec LATAM Airlines Group
08 Dec LATAM Airlines Group
23 Dec LATAM Airlines Group
14 Dec LATAM Airlines Group
05 Dec LATAM Airlines Group
17 Dec LATAM Airlines Group

Also check the deals for return flights from Seattle to Buenos Aires in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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