Tokyo (NRT) to Bangkok (BKK): 2,889 miles (4,649 km) great-circle, about 6h 15m nonstop by our estimate. Cheapest fare observed: $415 round-trip on Xiamen Airlines, with 1 stop, departing May 25, 2026.
$415 round-trip, Xiamen Airlines MF816, departing 2026-05-25 at 14:55, returning 2026-06-01. The recorded itinerary left on a Monday, returning on a Monday 7 nights later; the fare was observed 30 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $415, it ranked 11th of the 30 round-trip fares we recorded from NRT (median $570). That is 14.4 cents per great-circle mile (round-trip price over one-way distance), below the NRT median of 22.0 cents across 30 round-trip routes.
Routes from NRT of similar length: Novosibirsk (2,996 mi) at $934 and Krasnoyarsk (2,623 mi) at $774.
NRT to BKK is the only one of 30 NRT routes where Xiamen Airlines priced cheapest. It is the 14th longest of the 30 routes we track from NRT.
Of 59 departure airports with a fare to Bangkok, Tokyo (NRT) ranked 25th at $415. Lowest: $73 from Phuket (HKT); highest: $1428 from Mexico City (MEX); 14 nonstop. Cheapest-fare airlines (routes): Air India (5), Etihad (5), Thai Vietjet Air (4), Air China (3), Scoot (3) and Thai AirAsia (3), plus 31 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Tokyo, Asia/Bangkok; flight time is our estimate.