Cheapest one-way flights from Oakland to Seattle in December from $128

AirHint found the following cheapest one-way flights from Oakland (OAK) to Seattle (SEA) in December 2025 (see full year).

One-Way flights

30 Dec Alaska Airlines direct
25 Dec Alaska Airlines direct
22 Dec Southwest Airlines direct
22 Dec Southwest Airlines
23 Dec Alaska Airlines direct
19 Dec Alaska Airlines direct
26 Dec Hawaiian Airlines direct
14 Dec Alaska Airlines
14 Dec Alaska Airlines direct
20 Dec Alaska Airlines direct

Also check the deals for return flights from Oakland to Seattle 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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