Phuket (HKT) to Seoul (SEL): 2,685 miles (4,320 km) great-circle, about 5h 50m nonstop by our estimate. Cheapest fare observed: $295 round-trip on Thai AirAsia, with 1 stop, departing June 4, 2026.
$295 round-trip, Thai AirAsia FD3010, departing 2026-06-04 at 20:35, returning 2026-06-08. The recorded itinerary left on a Thursday, returning on a Monday 4 nights later; the fare was observed 40 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $295, it ranked 11th of the 30 round-trip fares we recorded from HKT (median $523). That is 11.0 cents per great-circle mile (round-trip price over one-way distance), below the HKT median of 20.5 cents across 30 round-trip routes.
Routes from HKT of similar length: Almaty (2,754 mi) at $549 and Beijing (2,480 mi) at $344.
HKT to SEL is the only one of 30 HKT routes where Thai AirAsia priced cheapest. It is the 18th longest of the 30 routes we track from HKT.
Of 24 departure airports with a fare to Seoul, Phuket (HKT) ranked 13th at $295. Lowest: $142 from Osaka (KIX); highest: $1288 from Portland (PDX); 10 nonstop. Cheapest-fare airlines (routes): Jetstar (2), Peach Aviation (2), airline 9G (1), airline WE (1), Alaska Airlines (1) and Asiana (1), plus 16 more.
That depends on your passport and trip, so check the official source for South Korea: Republic of Korea: K-ETA. 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/Seoul; flight time is our estimate.