Taipei (TPE) to Seoul (SEL): 909 miles (1,464 km) great-circle, about 2h 20m nonstop by our estimate. Cheapest fare observed: $200 round-trip on Tigerair Taiwan, nonstop, departing May 23, 2026.
$200 round-trip, Tigerair Taiwan IT602, departing 2026-05-23 at 20:00, returning 2026-05-26. The recorded itinerary left on a Saturday, returning on a Tuesday 3 nights later; the fare was observed 28 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $200, it ranked 4th of the 30 round-trip fares we recorded from TPE (median $357). That is 22.0 cents per great-circle mile (round-trip price over one-way distance), below the TPE median of 28.1 cents across 30 round-trip routes.
Routes from TPE of similar length: Sanya (891 mi) at $472 and Fukuoka (808 mi) at $365.
Tigerair Taiwan had the cheapest fare on 2 of 30 TPE routes. It is the 22nd longest of the 30 routes we track from TPE.
Of 24 departure airports with a fare to Seoul, Taipei (TPE) ranked 4th at $200. 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/Taipei, Asia/Seoul; flight time is our estimate.