AirHint found the following cheapest return flights from Seattle (SEA) to San Jose Del Cabo (SJD) in December 2025 (see full year).

Return flights

13 Dec - 17 Dec	Southwest Airlines
10 Dec - 16 Dec	Alaska Airlines
12 Dec - 19 Dec	Delta	direct
10 Dec - 14 Dec	Delta	direct
10 Dec - 16 Dec	Delta	direct
10 Dec - 15 Dec	Delta	direct
22 Dec - 29 Dec	Frontier Airlines
24 Dec - 31 Dec	Hawaiian Airlines
27 Dec - 07 Jan	Alaska Airlines
23 Dec - 30 Dec	Hawaiian Airlines
21 Dec - 28 Dec	Hawaiian Airlines
30 Dec - 04 Jan	Hawaiian Airlines
30 Dec - 04 Jan	Delta	direct
28 Dec - 01 Jan	Frontier Airlines
29 Dec - 02 Jan	Aeromexico
25 Dec - 03 Jan	WestJet
28 Dec - 01 Jan	Delta	direct
28 Dec - 02 Jan	Frontier Airlines
27 Dec - 02 Jan	Alaska Airlines
26 Dec - 03 Jan	WestJet

Also check the deals for one-way flights from Seattle to San Jose Del Cabo in December.

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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Cheapest return flights from Seattle to San Jose Del Cabo in December from 342€

Return flights