Boston (BOS) to Ho Chi Minh City (SGN): 8,759 miles (14,097 km) great-circle, about 18h 00m nonstop by our estimate. Cheapest fare observed: $1401 round-trip on Qatar, with 1 stop, departing July 14, 2026.
$1401 round-trip, Qatar QR744, departing 2026-07-14 at 22:00, returning 2026-08-11. The recorded itinerary left on a Tuesday, returning on a Tuesday 28 nights later; the fare was observed 80 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1401, it ranked 30th of the 30 round-trip fares we recorded from BOS (median $623). That is 16.0 cents per great-circle mile (round-trip price over one-way distance), below the BOS median of 19.1 cents across 30 round-trip routes.
Routes from BOS of similar length: Kampala (6,900 mi) at $1093 and Baku (5,633 mi) at $1255.
BOS to SGN is the only one of 30 BOS routes where Qatar priced cheapest. It is the longest of the 30 routes we track from BOS.
Of 20 departure airports with a fare to Ho Chi Minh City, Boston (BOS) ranked 19th at $1401. Lowest: $183 from Bangkok (BKK); highest: $1566 from Salt Lake City (SLC); 8 nonstop. Cheapest-fare airlines (routes): VietJet Air (3), Air India (2), American Airlines (2), Qatar (2), AirAsia (1) and Cathay Pacific (1), plus 9 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, Asia/Ho_Chi_Minh; flight time is our estimate.