SEA - UBN

Find cheap flights from Seattle to Ulaanbaatar

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ulaanbaatar

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Ulaanbaatar, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Ulaanbaatar, as well as popular online travel agencies
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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Seattle and Ulaanbaatar. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $1,645 (round-trip)
Shortest trip • 21h 08m (one-way)
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Ulaanbaatar (SEA-UBN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Ulaanbaatar that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Ulaanbaatar

Multiple Airlines Logo
SEA
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UBN
5229 mimulti-stop
Multiple Airlines Logo
UBN
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SEA
5229 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Ulaanbaatar flights

Get data-powered insights and trends into flights from Seattle to Ulaanbaatar to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Seattle to Ulaanbaatar?

Percentage of 1-stop round-trip flights from Seattle to Ulaanbaatar chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Incheon (ICN) is the top choice – 79% of KAYAK users who clicked on 1-stop flights from Seattle to Ulaanbaatar picked an itinerary connecting there.

What is the cheapest layover airport when flying from Seattle to Ulaanbaatar?

Average round-trip price for 1-stop flights from Seattle to Ulaanbaatar clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Incheon (ICN) offer the most affordable fares, with an average round-trip price of $1,645.

Which layover airport offers the shortest total travel time from Seattle to Ulaanbaatar?

Shortest average total travel time for 1-stop one-way flights from Seattle to Ulaanbaatar via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Istanbul (IST) for the shortest journey. The average one-way travel time for flights connecting there is 21h 08m.

Which layover airport has the quickest connection when flying from Seattle to Ulaanbaatar?

Average layover duration at different layover airports for 1-stop one-way flights from Seattle to Ulaanbaatar, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Istanbul (IST) often has the shortest layovers from Seattle to Ulaanbaatar, with an average of 1h 44m.

When to book flights from Seattle to Ulaanbaatar

Are your dates flexible? Find out the best times to travel from Seattle to Ulaanbaatar based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Ulaanbaatar

  • Do I need a passport to fly between Seattle and Ulaanbaatar?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seattle and on arrival in Ulaanbaatar.

  • Which aircraft models fly most regularly from Seattle to Ulaanbaatar?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Ulaanbaatar?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Ulaanbaatar, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Ulaanbaatar, Korean Air or Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Ulaanbaatar are Korean Air and Asiana Airlines. With an average price for the route of $1,341 and an overall rating of 8.4, Korean Air is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $1,537 and an overall rating of 8.1.

  • How does KAYAK find such low prices on flights from Seattle to Ulaanbaatar?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Ulaanbaatar.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Ulaanbaatar?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ulaanbaatar from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Ulaanbaatar?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ulaanbaatar with an airline and back to Seattle with another airline. Booking your flights between Seattle and UBN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Ulaanbaatar?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ulaanbaatar from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Seattle to Ulaanbaatar

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Ulaanbaatar. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Ulaanbaatar? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1205 reviews
8.3Comfort
8.7Crew
8.1Food
8.2Entertainment
8.5Boarding
Airline reviews

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

10.0 ExcellentVivian, Nov 2025
SEA - ICN
Read more Korean Air reviews

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Kayak uses scammer sites to steal money from their victims.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

Felt like the oldest plane in Asiana Fleet. Screen was 5-6in only and no charging at all. Movie selection wasn't great.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

Everything you need to know for your flight from Seattle to Ulaanbaatar

Information on your arrival and departure airports