San Francisco (SFO) to Bangkok (BKK): 7,923 miles (12,751 km) great-circle, about 16h 20m nonstop by our estimate. Cheapest fare observed: $1269 round-trip on Flair Airlines, with 2 stops, departing June 10, 2026.
$1269 round-trip, Flair Airlines F81849, departing 2026-06-10 at 18:45, returning 2026-06-17. The recorded itinerary left on a Wednesday, returning on a Wednesday 7 nights later; the fare was observed 46 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1269, it ranked 25th of the 30 round-trip fares we recorded from SFO (median $646). That is 16.0 cents per great-circle mile (round-trip price over one-way distance), close to the SFO median of 16.9 cents across 30 round-trip routes.
Routes from SFO of similar length: Ho Chi Minh City (7,828 mi) at $607 and Delhi (7,694 mi) at $876.
Flair Airlines had the cheapest fare on 2 of 30 SFO routes. It is the longest of the 30 routes we track from SFO.
Of 59 departure airports with a fare to Bangkok, San Francisco (SFO) ranked 55th at $1269. 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 America/Los_Angeles, Asia/Bangkok; flight time is our estimate.