Cheapest one-way flights from Seattle to Tokyo in December from $428

Best time to book flights for Seattle (SEA) to Tokyo (NRT) flights at AirHint

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

One-Way flights

31 Dec American Airlines direct
10 Dec Alaska Airlines
10 Dec Alaska Airlines direct
15 Dec United
24 Dec Air Canada
11 Dec Air Canada
12 Dec Air Canada
19 Dec WestJet
12 Dec Alaska Airlines direct
19 Dec Alaska Airlines direct

Also check the deals for return flights from Seattle to Tokyo in December.

Skyscanner

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.

Book a cheap hotel in Tokyo

Cheap car rent in Tokyo