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Best Time to Fly from Seattle to Tokyo
Real weather data for Tokyo by month and real day-of-week fare patterns for this route — so "best time" here means something you can check, not a generic guess.
General booking pattern
Without route-specific fare history, the general industry pattern holds: mid-week flights — especially Tuesday and Wednesday — tend to be cheaper than weekend departures. This is general advice, not a fact about this specific route.
Weather in Tokyo by month
Based on the last 3 years of real historical data. August runs warmest (33°C avg high). December runs driest (~39mm rain).
January
10° / 1°C
~53mm rain
February
11° / 2°C
~57mm rain
March
15° / 6°C
~156mm rain
April
20° / 11°C
~131mm rain
May
23° / 15°C
~190mm rain
June
27° / 19°C
~237mm rain
July
32° / 24°C
~89mm rain
August
33° / 25°C
~104mm rain
September
30° / 23°C
~188mm rain
October
23° / 16°C
~154mm rain
November
18° / 9°C
~68mm rain
December
13° / 3°C
~39mm rain
Nearby airports
Near Seattle
- Boeing Field King County International Airport (BFI)9 km
- Tacoma Narrows Airport (TIW)29 km
- Snohomish County (Paine Field) Airport (PAE)51 km
Near Tokyo
- Hyakuri Airport (IBR)46 km
- Tokyo International Airport (HND)60 km
More about this route
FAQs — Best time to fly Seattle to Tokyo
We don't have a live fare history for this specific route yet — mid-week departures (Tuesday and Wednesday) are typically cheaper as a general industry pattern.