Cheapest one-way flights from Seattle to Buenos Aires in January from 340€

AirHint found the following cheapest one-way flights from Seattle (SEA) to Buenos Aires (EZE) in January 2026 (see full year).

One-Way flights

09 Jan Frontier Airlines
05 Jan Hawaiian Airlines
19 Jan LATAM Airlines Group
28 Jan LATAM Airlines Group
16 Jan LATAM Airlines Group
13 Jan LATAM Airlines Group
01 Jan LATAM Airlines Group
07 Jan LATAM Airlines Group
10 Jan LATAM Airlines Group
25 Jan LATAM Airlines Group

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

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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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