How long is the flight from Ulaanbaatar to Seattle?

Departing from Ulaanbaatar to Seattle will take you 17h 45m. Ulaanbaatar and Seattle are separated by a distance of 5229 mi.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from UBN to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ulaanbaatar to Seattle as you normally would.

Can I find deals for flights from Ulaanbaatar to Seattle that include hotel bookings?

Yes. In addition to deals on Ulaanbaatar to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ulaanbaatar to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ulaanbaatar to Seattle.

Can I find deals for business class flights from Ulaanbaatar to Seattle?

Yes. Cheapflights offers flight deals from Ulaanbaatar to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£638+ Cheap Flights from Ulaanbaatar to Seattle

Cheap flight deals from Ulaanbaatar to Seattle

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Cheapest flights from Ulaanbaatar to Seattle
Explore the most affordable flight options available from Ulaanbaatar to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 October 2026.

Mon 23/1112:25 -

3 stops47h 43m

Fri 26/316:35 -

2 stops51h 35m

Deal found 23/10£2,126

Find flight deals from Ulaanbaatar to Seattle

Round-trip from	£2,079
One-way from	£638
Popular in	August
Cheapest in	May
Average price	£1,011

Delta
5/2-3/3
2 total stops
36h 00m total
Ulaanbaatar to Seattle

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Turkish Airlines
5/11-31/12
1 total stop
24h 55m total
Ulaanbaatar to Seattle

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Highest demand for flights based on searches. 3% potential increase in price (£25 potential increase over avg. return price).

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Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).

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Average for round-trip flights in October 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Ulaanbaatar to Seattle that are best for you.

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Cheapest return flight

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Thu 5/11

09:15-18:10

1 stop24h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£638

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Sat 7/11

09:15-18:10

1 stop24h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£638

Fastest return journey

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Sat 31/10

09:15-18:10

1 stop23h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£755

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Sun 1/11

12:25-10:05

1 stop36h 40m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£1,063

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Fri 5/2

12:25-14:10

1 stop17h 45m

Seattle/Tacoma Intl

Wed 3/3

00:10-10:25

1 stop18h 15m

£2,079

UlaanbaatarSeattle

UBN Ulaanbaatar Chinggis Khaan - SEA Seattle/Tacoma Intl

UBNSEA

Ulaanbaatar Chinggis Khaan

Mon 23/11

12:25-20:08

3 stops47h 43m

Seattle/Tacoma Intl

Fri 26/3

16:35-11:10

2 stops51h 35m

£2,126

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Sorted by cheapest first

Best time to book a flight from Ulaanbaatar to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Ulaanbaatar with our price prediction graph.

UBN-SEA

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Ulaanbaatar to Seattle?
Departing from Ulaanbaatar to Seattle will take you 17h 45m. Ulaanbaatar and Seattle are separated by a distance of 5229 mi.
Can I find deals for flights from Ulaanbaatar to Seattle that include hotel bookings?
Yes. In addition to deals on Ulaanbaatar to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ulaanbaatar to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ulaanbaatar to Seattle.
Can I find deals for business class flights from Ulaanbaatar to Seattle?
Yes. Cheapflights offers flight deals from Ulaanbaatar to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flights from Ulaanbaatar to Seattle from £638

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ulaanbaatar to Seattle

Cheapest flights from Ulaanbaatar to SeattleExplore the most affordable flight options available from Ulaanbaatar to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 October 2026.

Explore the most affordable flight options available from Ulaanbaatar to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 October 2026.

Best flights from Ulaanbaatar to SeattleDiscover carefully curated flight deals from Ulaanbaatar to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Discover carefully curated flight deals from Ulaanbaatar to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Last-minute flights from Ulaanbaatar to SeattleDiscover last-minute flight deals from Ulaanbaatar to Seattle. Data last updated 26 October 2026 and is based on user searches.

Discover last-minute flight deals from Ulaanbaatar to Seattle. Data last updated 26 October 2026 and is based on user searches.

One-way flights from Ulaanbaatar to SeattleSearch for one-way flight options from Ulaanbaatar to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Search for one-way flight options from Ulaanbaatar to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

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Best time to book a flight from Ulaanbaatar to Seattle

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Related info for your journey

How long is the flight from Ulaanbaatar to Seattle?

Can I find deals for flights from Ulaanbaatar to Seattle that include hotel bookings?

How can I find direct flights from Ulaanbaatar to Seattle?

Can I find deals for business class flights from Ulaanbaatar to Seattle?

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Ulaanbaatar and Seattle flights

Browse other Ulaanbaatar and Seattle flight options. Last updated on 26 October 2026.

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How does Cheapflights help users find flights from Ulaanbaatar to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Ulaanbaatar to Seattle?

Can Cheapflights find flights from Ulaanbaatar to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Ulaanbaatar to Seattle become cheaper?

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Cheapest flights from Ulaanbaatar to Seattle
Explore the most affordable flight options available from Ulaanbaatar to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 October 2026.

Best flights from Ulaanbaatar to Seattle
Discover carefully curated flight deals from Ulaanbaatar to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 October 2026.

Last-minute flights from Ulaanbaatar to Seattle
Discover last-minute flight deals from Ulaanbaatar to Seattle. Data last updated 26 October 2026 and is based on user searches.

One-way flights from Ulaanbaatar to Seattle
Search for one-way flight options from Ulaanbaatar to Seattle. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.