Bangkok (BKK) to Singapore (SIN): 880 miles (1,417 km) great-circle, about 2h 15m nonstop by our estimate. Cheapest fare observed: $235 round-trip on Thai AirAsia, nonstop, departing May 5, 2026.
$235 round-trip, Thai AirAsia FD357, departing 2026-05-05 at 10:40, returning 2026-05-06. The recorded itinerary left on a Tuesday, returning on a Wednesday 1 night later; the fare was observed 10 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $235, it ranked 14th of the 30 round-trip fares we recorded from BKK (median $259). That is 26.7 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: Kuala Lumpur (758 mi) at $165 and Hong Kong (1,050 mi) at $197.
Thai AirAsia had the cheapest fare on 3 of 30 BKK routes. It is the 19th longest of the 30 routes we track from BKK.
Of 13 departure airports with a fare to Singapore, Bangkok (BKK) ranked 6th at $235. Lowest: $90 from Kuala Lumpur (KUL); highest: $933 from Auckland (AKL); 9 nonstop. Cheapest-fare airlines (routes): Scoot (2), Thai AirAsia (2), Batik Air Malaysia (1), EVA Air (1), Indonesia AirAsia (1) and KLM (1), plus 5 more.
The reverse, Singapore (SIN) to Bangkok (BKK), was $223 round-trip on Thai AirAsia, nonstop, departing July 3, 2026. Singapore to Bangkok flights.
That depends on your passport and trip, so check the official source for Singapore: Immigration & Checkpoints Authority (Singapore): visa requirements. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Bangkok, Asia/Singapore; flight time is our estimate.