Bangkok (BKK) to Hanoi (HAN): 618 miles (995 km) great-circle, about 1h 45m nonstop by our estimate. Cheapest fare observed: $170 round-trip on Vietravel Airlines, nonstop, departing May 15, 2026.
$170 round-trip, Vietravel Airlines VU136, departing 2026-05-15 at 14:05, returning 2026-05-17. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 20 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $170, it ranked 9th of the 30 round-trip fares we recorded from BKK (median $259). That is 27.5 cents per great-circle mile (round-trip price over one-way distance), above the BKK median of 20.6 cents across 30 round-trip routes.
Routes from BKK of similar length: Nha Trang (582 mi) at $163 and Da Nang (524 mi) at $147.
Vietravel Airlines had the cheapest fare on 2 of 30 BKK routes. It is the 21st longest of the 30 routes we track from BKK.
Of 9 departure airports with a fare to Hanoi, Bangkok (BKK) ranked 1st at $170. Lowest: $170 from Bangkok (BKK); highest: $523 from Sydney (SYD); 4 nonstop. Cheapest-fare airlines (routes): Vietravel Airlines (2), China Eastern (1), HK Express (1), IndiGo (1), Korean Air (1) and Shenzhen Airlines (1), plus 2 more.
The reverse, Hanoi (HAN) to Bangkok (BKK), was $165 round-trip on Vietravel Airlines, nonstop, departing May 2, 2026. Hanoi to Bangkok flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Bangkok, Asia/Ho_Chi_Minh; flight time is our estimate.