Cheapest return flights from Seattle to Guadalajara in December from $417

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

Return flights

02 Dec - 11 Dec Aeromexico
02 Dec - 11 Dec Volaris direct
11 Dec - 14 Dec Hawaiian Airlines
09 Dec - 31 Dec Hawaiian Airlines
24 Dec - 08 Jan Frontier Airlines
05 Dec - 07 Jan Air Canada
09 Dec - 20 Dec Hawaiian Airlines
12 Dec - 31 Dec Frontier Airlines
23 Dec - 06 Jan Frontier Airlines
24 Dec - 04 Jan Frontier Airlines
25 Dec - 06 Jan Frontier Airlines
22 Dec - 06 Jan Frontier Airlines
26 Dec - 07 Jan Frontier Airlines
25 Dec - 01 Jan Frontier Airlines
15 Dec - 26 Dec Frontier Airlines
10 Dec - 26 Dec Aeromexico
04 Dec - 10 Jan Hawaiian Airlines
09 Dec - 27 Dec Hawaiian Airlines
09 Dec - 26 Dec Hawaiian Airlines
19 Dec - 05 Jan Frontier Airlines

Also check the deals for one-way flights from Seattle to Guadalajara in December.

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