There is no single month that is always cheapest for every departure city. The useful answer comes from live route data, flexible travel dates and the conditions of the specific fare.
Use a full-year view
A pricing calendar makes it easier to spot lower-priced travel windows before you commit to leave dates. Treat calendar prices as recently found examples and verify the final result on the booking provider's page.
Separate airfare from total trip cost
A lower flight price may coincide with more expensive accommodation or an inconvenient airport schedule. Compare the entire trip rather than choosing the lowest airfare in isolation.
Consider trip length
The same departure date can produce different prices depending on the return date. Compare several realistic trip lengths instead of testing only one fixed week.
Watch the itinerary, not only the number
A very low fare may involve long connections, separate tickets or restrictive baggage rules. A slightly higher fare can be better value when it saves time and reduces risk.
Check the current Tokyo pricing calendar
Use the live month-by-month tool on the homepage.
Explore cheaper months