Cheapest return flights from Seattle to San Salvador in January from 303€

AirHint found the following cheapest return flights from Seattle (SEA) to San Salvador (SAL) in January 2026 (see full year).

Return flights

08 Jan - 16 Jan Frontier Airlines
08 Jan - 14 Jan Frontier Airlines
08 Jan - 17 Jan Frontier Airlines
08 Jan - 18 Jan Frontier Airlines
08 Jan - 15 Jan Frontier Airlines
06 Jan - 12 Jan Hawaiian Airlines
27 Jan - 31 Jan Alaska Airlines
07 Jan - 12 Jan Hawaiian Airlines
07 Jan - 14 Jan Hawaiian Airlines
05 Jan - 12 Jan Hawaiian Airlines

Also check the deals for one-way flights from Seattle to San Salvador 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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