Cheapest one-way flights from Seattle to Ulaanbaatar in August from $493

AirHint found the following cheapest one-way flights from Seattle (SEA) to Ulaanbaatar (UBN) in August 2025 (see full year).

One-Way flights

25 Aug Korean Air

Also check the deals for return flights from Seattle to Ulaanbaatar in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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