Bangkok (BKK) to Kuala Lumpur (KUL): 758 miles (1,221 km) great-circle, about 2h 00m nonstop by our estimate. Cheapest fare observed: $165 round-trip on Thai Vietjet Air, with 1 stop, departing July 5, 2026.
$165 round-trip, Thai Vietjet Air VZ340, departing 2026-07-05 at 07:05, returning 2026-07-20. The recorded itinerary left on a Sunday, returning on a Monday 15 nights later; the fare was observed 71 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $165, it ranked 8th of the 30 round-trip fares we recorded from BKK (median $259). That is 21.8 cents per great-circle mile (round-trip price over one-way distance), close to the BKK median of 20.6 cents across 30 round-trip routes.
Routes from BKK of similar length: Singapore (880 mi) at $235 and Hanoi (618 mi) at $170.
Thai Vietjet Air had the cheapest fare on 3 of 30 BKK routes. It is the 20th longest of the 30 routes we track from BKK.
Of 18 departure airports with a fare to Kuala Lumpur, Bangkok (BKK) ranked 5th at $165. Lowest: $94 from Singapore (SIN); highest: $579 from Shanghai (PVG); 11 nonstop. Cheapest-fare airlines (routes): AirAsia (7), Scoot (4), VietJet Air (2), Batik Air Malaysia (1), HK Express (1) and Spring Airlines (1), plus 2 more.
The reverse, Kuala Lumpur (KUL) to Bangkok (BKK), was $184 round-trip on AirAsia, 1 stop, departing June 23, 2026. Kuala Lumpur to Bangkok flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Bangkok, Asia/Kuala_Lumpur; flight time is our estimate.