Cheap Flights from Seoul to Ulaanbaatar — $139

The route Seoul — Ulaanbaatar is served by many carriers — 7 in total, including Jeju Air, Asiana Airlines, MIAT Mongolian Airlines, Korean Air, T'way Air, Jin Air, and Air China. This gives passengers wide opportunities: from finding the lowest fare (from $139) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.

Seoul is served primarily by two airports with distinct roles. Incheon International (ICN) is the region’s main international gateway and a long-haul hub for full-service carriers; it typically handles most intercontinental flights and can be pricier to reach but often competitive for transpacific routes. The airport lies about 48 km west of central Seoul, with express train options (Incheon Airport Railroad Express) taking roughly 45–60 minutes and airport buses around 50–70 minutes; fares typically range from moderate to higher depending on service. Gimpo Airport (GMP) acts more as a domestic and short-haul regional node, frequented by low-cost and legacy carriers for flights to destinations across Korea, Japan, and China. Located roughly 15–20 km from downtown, Gimpo is reachable by subway in about 20–30 minutes or by taxi in similar time with lower fares. Incheon offers extensive amenities and international transfer convenience but can mean longer surface travel; Gimpo is often more convenient for quick domestic hops though with fewer long-haul services.

Ulaanbaatar is served primarily by Chinggis Khaan International Airport (ULN), a modern international hub located about 45–50 km south of the city center that typically handles most long-haul and regional flights. The airport often hosts full-service carriers as well as regional and low-cost operators, so fares can range from budget-friendly to premium depending on carrier and season. Ground transport options include airport shuttle buses (roughly 1–1.5 hours), private taxis or ride-hailing (approximately 50–70 minutes depending on traffic) and pre-arranged hotel transfers; fares can vary from modest shuttle fees to higher taxi rates. Pros: relatively new facilities and international connectivity; cons: significant distance to downtown and occasional traffic delays.

In different months, ticket prices from Seoul to Ulaanbaatar vary: minimum — $139 (August 2026), maximum — $227 (January 2027). Typically, the flight costs $174–$357.