Colombo (CMB) to Nha Trang (NHA): 2,025 miles (3,259 km) great-circle, about 4h 35m nonstop by our estimate. Cheapest fare observed: $471 round-trip on AirAsia, with 2 stops, departing June 15, 2026.
$471 round-trip, AirAsia AK46, departing 2026-06-15 at 22:55, returning 2026-06-27. The recorded itinerary left on a Monday, returning on a Saturday 12 nights later; the fare was observed 51 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $471, it ranked 13th of the 30 round-trip fares we recorded from CMB (median $495). That is 23.3 cents per great-circle mile (round-trip price over one-way distance), close to the CMB median of 22.4 cents across 30 round-trip routes.
Routes from CMB of similar length: Da Nang (2,009 mi) at $353 and Dubai (2,043 mi) at $272.
AirAsia had the cheapest fare on 4 of 30 CMB routes. It is the 21st longest of the 30 routes we track from CMB.
Of 17 departure airports with a fare to Nha Trang, Colombo (CMB) ranked 16th at $471. Lowest: $109 from Ho Chi Minh City (SGN); highest: $789 from Kathmandu (KTM); 7 nonstop. Cheapest-fare airlines (routes): VietJet Air (4), AirAsia (2), Sichuan Airlines (2), Thai Vietjet Air (2), Vietnam Airlines (2) and Air India (1), plus 4 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Colombo, Asia/Ho_Chi_Minh; flight time is our estimate.