Taipei (TPE) to Ulaanbaatar (UBN): 1,747 miles (2,811 km) great-circle, about 4h 00m nonstop by our estimate. Cheapest fare observed: $510 round-trip on Jeju Air, with 1 stop, departing May 10, 2026.
$510 round-trip, Jeju Air 7C6154, departing 2026-05-10 at 02:50, returning 2026-05-17. The recorded itinerary left on a Sunday, returning on a Sunday 7 nights later; the fare was observed 15 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $510, it ranked 19th of the 30 round-trip fares we recorded from TPE (median $357). That is 29.2 cents per great-circle mile (round-trip price over one-way distance), close to the TPE median of 28.1 cents across 30 round-trip routes.
Routes from TPE of similar length: Phuket (1,911 mi) at $283 and Aomori (1,556 mi) at $534.
Jeju Air had the cheapest fare on 3 of 30 TPE routes. It is the 13th longest of the 30 routes we track from TPE.
Of 6 departure airports with a fare to Ulaanbaatar, Taipei (TPE) ranked 4th at $510. Lowest: $359 from Seoul (ICN); highest: $1531 from San Francisco (SFO); 2 nonstop. Cheapest-fare airlines (routes): Jeju Air (2), MIAT Mongolian Airlines (2), Air China (1) and Asiana (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Taipei, Asia/Ulaanbaatar; flight time is our estimate.