August is the cheapest month to fly this route, with average fares around $1252 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1533 | $1248 | ||
| June 2026 | $1556 | $1248 | Peak | |
| July 2026 | $1370 | $1248 | ||
| August 2026 | $1252 | $1202 | Best |
Departing on Monday offers the lowest average fares at $1381. Thursday departures are the most expensive at $1555, a difference of $174.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Houston to Tokyo is August, with average round-trip fares around $1252. The lowest fare found in August is $1202.
Monday departures are the cheapest, averaging $1381 round trip. The most expensive day is Thursday at $1555.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $1556 compared to $1252 in the cheapest month. May is a solid middle-ground option at $1533.
Flying in August instead of June can save you approximately $304 per round trip. The cheapest month averages $1252 while the most expensive averages $1556.
Airlines, flight times, price calendar, and more for Houston to Tokyo
View IAH → NRT Details