Seattle (SEA) to Tokyo (NRT) flight prices

A quick snapshot of Seattle (SEA) to Tokyo (NRT) fares — lowest and typical prices plus the cheapest months and weekdays to fly, the airlines on the route and the usual duration for travel from United States to Japan.

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Estimated median price for a one-way ticket

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Price graph and price trends for Seattle Tacoma International-Narita International Airport

Weekly price trend

Today

2027

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Week

18

22

26

30

34

38

42

46

50

1

5

9

USD 312–427

USD 428–543

USD 544–659

USD 660–775

USD 776–892

Monthly price summary

March

AprilBest price

May

June

July

August

September

October

November

DecemberMost expensive

January

February

Ticket prices for Seattle to Tokyo (March 2026 - March 2027) are shown here with weekly or monthly averages to indicate cheaper and more expensive periods.

Source: Flightprices.com & Kayak.com
Forecast updated: January 18, 2026.

Flight information

SEA → NRT

Flight frequency

14 flights/week

Type

Direct flight

Duration

10 hours 15 minutes

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Airlines with non-stop flights on this route:

JAL Alaska Airlines

FAQ – Seattle (SEA) → Tokyo (NRT)

Are there any low-cost airlines with flights from Seattle (SEA) to Tokyo (NRT)?

No dedicated low-cost airlines fly directly between Seattle and Tokyo. Instead, full-service carriers such as JAL and Alaska Airlines operate this route.

Which is the cheapest month to fly between Seattle Tacoma International and Narita International Airport?

Based on recent price logs, the cheapest month(s) is September 2026. Use the monthly view above to spot the dip weeks.

What day of the week is usually cheapest on this route?

Based on price logs for the next 12 months, the cheapest day(s) to depart is Tuesday. Compare weekdays in the fare calendar to target these departures.

Is roundtrip cheaper than two one-way tickets for SEA-NRT?

Usually yes, but not always. Check both options — you can easily switch between them in our widget.

How far in advance should I book to get the best price?

For domestic routes like SEA-NRT, good deals often appear a few weeks out. Watch for sales and avoid peak dates.

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Seattle (SEA)

→

Tokyo (NRT)

Roundtrip One way

Departure

Return

Adults

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Children (3–11)

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Youth (12–17)

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Infants (0–2)

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Class

Economy Premium Business First

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