Jakarta (CGK) to Seoul (SEL): 3,271 miles (5,264 km) great-circle, about 7h 05m nonstop by our estimate. Cheapest fare observed: $261 round-trip on T'way Air, nonstop, departing May 17, 2026.
$261 round-trip, T'way Air TW156, departing 2026-05-17 at 21:50, returning 2026-05-30. The recorded itinerary left on a Sunday, returning on a Saturday 13 nights later; the fare was observed 22 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $261, it ranked 9th of the 30 round-trip fares we recorded from CGK (median $342). That is 8.0 cents per great-circle mile (round-trip price over one-way distance), below the CGK median of 19.4 cents across 30 round-trip routes.
Routes from CGK of similar length: Beijing (3,255 mi) at $340 and Shanghai (2,755 mi) at $326.
CGK to SEL is the only one of 30 CGK routes where T'way Air priced cheapest. It is the 11th longest of the 30 routes we track from CGK.
Of 24 departure airports with a fare to Seoul, Jakarta (CGK) ranked 10th at $261. 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/Jakarta, Asia/Seoul; flight time is our estimate.