
Most accurate provider | OneTravel 3 stars |
|---|---|
Most trusted provider | OneTravel 3 stars |
Popular in | June |
Cheapest in | September |
Average price | $1,153 |
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Beijing (PEK) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ulaanbaatar to Washington, D.C. Dulles Intl Airport on Cheapflights.
Beijing (PEK) is the most affordable 1-stop option, with an average round-trip price of $1,251.
Flights via Beijing (PEK) have the shortest average one-way travel time for 1-stop routes: 19h 50m.
Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 3h 00m.
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Jacqueline,Aug 2025
ICN - SEA
Comfort
Overall
Entertainment
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Reviews
Jacqueline,Aug 2025
ICN - SEA
Comfort
Overall
Entertainment
Food
Boarding
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Reviews
Jacqueline,Aug 2025
ICN - SEA
Comfort
Overall
Entertainment
Food
Boarding
Crew
Reviews
Jacqueline,Aug 2025
ICN - SEA
Comfort
Overall
Entertainment
Food
Boarding
Crew
Reviews
Jacqueline,Aug 2025
ICN - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$493 | Average$1,366 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$814 | Average$966 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$934 | Average$1,179 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$1,153 | Average$1,154 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,338 | Average$1,449 | FlexibilityNo cancel fee | On-time63% |