Tokyo (NRT) to Nha Trang (NHA): 2,544 miles (4,093 km) great-circle, about 5h 35m nonstop by our estimate. Cheapest fare observed: $423 round-trip on Vietnam Airlines, with 1 stop, departing July 23, 2026.
$423 round-trip, Vietnam Airlines VN307, departing 2026-07-23 at 09:30, returning 2026-07-29. The recorded itinerary left on a Thursday, returning on a Wednesday 6 nights later; the fare was observed 89 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $423, it ranked 12th of the 30 round-trip fares we recorded from NRT (median $570). That is 16.6 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: Krasnoyarsk (2,623 mi) at $774 and Hanoi (2,312 mi) at $382.
NRT to NHA is the only one of 30 NRT routes where Vietnam Airlines priced cheapest. It is the 16th longest of the 30 routes we track from NRT.
Of 17 departure airports with a fare to Nha Trang, Tokyo (NRT) ranked 14th at $423. Lowest: $109 from Ho Chi Minh City (SGN); highest: $789 from Kathmandu (KTM); 7 nonstop. Cheapest-fare airlines (routes): VietJet Air (4), AirAsia (2), Sichuan Airlines (2), Thai Vietjet Air (2), Vietnam Airlines (2) and Air India (1), plus 4 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Tokyo, Asia/Ho_Chi_Minh; flight time is our estimate.