Cheapest return flights from Seattle to Santiago in December from 890€

AirHint found the following cheapest return flights from Seattle (SEA) to Santiago (SCL) in December 2025 (see full year).

Return flights

29 Dec - 07 Jan Hawaiian Airlines
30 Dec - 07 Jan Hawaiian Airlines
30 Dec - 08 Jan Hawaiian Airlines
22 Dec - 07 Jan Frontier Airlines
24 Dec - 07 Jan Alaska Airlines
13 Dec - 03 Jan Frontier Airlines
20 Dec - 31 Dec Sun Country Airlines

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