Seattle to Ulaanbaatar flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Seattle to Ulaanbaatar is €503 (checked on 27 Oct 2026).
Your next trip, last seen at €503
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €503, departing 13 Nov 2026 (Last checked: 27 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 52Check live prices for this route
- Airlines seen
- Alaska Airlines, Cathay Pacific, Frontier Airlines, Korean Air, Philippine Airlines, Turkish Airlines, WestJet (7)
- Typical journey time
- 31h 40m
About this route
Explore the fares we observed from Seattle to Ulaanbaatar. Prices move often, so pick your dates to see the latest options.
- Route distance
- 8,380 km
- Typical journey time
- 31h 40m
- Seen on fares with a connection
- Korean Air, Alaska Airlines, Cathay Pacific, Frontier Airlines, WestJet
- Alternative airports
- BFI
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
- Ulaanbaatar Chinggis Khaan International Airport (UBN) → Ulaanbaatar, city gazetteer reference point (47.8864, 106.9057): ≈ 27 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Seattle to Ulaanbaatar: November 2026, from €503 (checked 27 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €503 | 26 |
| December 2026 | €583 | 10 |
| January 2027 | €558 | 16 |
Lowest fare by day of the week
Cheapest day of the week from Seattle to Ulaanbaatar: Friday, from €503 (checked 27 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €561 | 8 |
| Tuesday | €577 | 9 |
| Wednesday | €558 | 7 |
| Thursday | €576 | 7 |
| Friday | €503 | 5 |
| Saturday | €598 | 7 |
| Sunday | €511 | 9 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Seattle to Ulaanbaatar by days until departure (8 to 30 days): €503 (checked 27 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €511 | 6 |
| 8 to 30 days | €503 | 21 |
| 31 to 60 days | €583 | 9 |
| 61 days or more | €558 | 16 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Seattle to Ulaanbaatar: Korean Air, from €558 (checked 27 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Korean Air | €558Jan 20, 2027 | 16 |
| Cathay Pacific | €577Nov 10, 2026 | 14 |
| Alaska Airlines | €583Dec 3, 2026 | 15 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Seattle to Ulaanbaatar?
The lowest fare Routavio has observed is €503, found on 27 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Seattle to Ulaanbaatar?
Cheapest month from Seattle to Ulaanbaatar: November 2026, from €503 (checked 27 Oct 2026).
Are there direct flights from Seattle to Ulaanbaatar?
Our data holds no non-stop flight from Seattle to Ulaanbaatar. The fares on this page include at least one stop.
Which airlines fly from Seattle to Ulaanbaatar?
Routavio has seen these carriers on the route: Alaska Airlines, Cathay Pacific, Frontier Airlines, Korean Air, Philippine Airlines, Turkish Airlines, WestJet (7).
How long does the flight from Seattle to Ulaanbaatar take?
Across the 47 fares Routavio observed, the average journey time is 35h 54m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to Ulaanbaatar fares were non-stop?
None of the 53 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Seattle to Ulaanbaatar?
Cheapest day of the week from Seattle to Ulaanbaatar: Friday, from €503 (checked 27 Oct 2026).
Which airline has the lowest fare from Seattle to Ulaanbaatar?
Cheapest airline from Seattle to Ulaanbaatar: Korean Air, from €558 (checked 27 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.