$604 Find Cheap Flights from Seattle to Mongolia - Compare and Save

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Book Cheap Seattle to Mongolia Plane Tickets

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Mongolia

Thu, Nov 12 - Wed, Nov 18
Multiple Airlines Logo
12:40 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
29h 45m1 stop Incheon Intl
Multiple Airlines Logo
12:25 am - 12:55 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
28h 30m1 stop Incheon Intl
$1,111Multiple Airlines
Tue, Nov 24 - Wed, Mar 31
Korean Air Logo
12:10 am - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
18h 15m1 stop Incheon Intl
Korean Air Logo
1:00 pm - 10:40 amUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
36h 40m1 stop Incheon Intl
$1,238Korean Air
Thu, Nov 12 - Wed, Nov 18
Multiple Airlines Logo
4:36 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
25h 49m2 stops Las Vegas Harry Reid Intl Incheon Intl
Multiple Airlines Logo
12:25 am - 12:55 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
28h 30m1 stop Incheon Intl
$1,239Multiple Airlines
Tue, Nov 24 - Wed, Mar 31
Korean Air Logo
12:10 am - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
18h 15m1 stop Incheon Intl
Korean Air Logo
1:00 pm - 2:47 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
40h 47m2 stops Incheon Intl Los Angeles
$1,249Korean Air
Thu, Nov 12 - Thu, Nov 19
Korean Air Logo
4:36 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
25h 49m2 stops Las Vegas Harry Reid Intl Incheon Intl
Korean Air Logo
12:25 pm - 10:04 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
25h 39m2 stops Incheon Intl Los Angeles
$1,262Korean Air
Wed, Nov 25 - Wed, Mar 31
Korean Air Logo
12:31 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
53h 54m2 stops Los Angeles Incheon Intl
Korean Air Logo
1:00 pm - 10:05 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
24h 05m2 stops Incheon Intl Los Angeles
$1,262Korean Air
Sun, Nov 22 - Sun, Dec 6
Delta Logo
9:20 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
45h 05m2 stops Los Angeles Incheon Intl
Delta Logo
12:25 pm - 2:10 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
17h 45m1 stop Incheon Intl
$1,408Delta
Sun, Nov 22 - Sun, Dec 6
Delta Logo
9:20 pm - 10:25 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
45h 05m2 stops Los Angeles Incheon Intl
Delta Logo
12:25 pm - 8:19 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
23h 54m2 stops Incheon Intl Los Angeles
$1,419Delta
Sun, Nov 22 - Sat, Dec 5
Multiple Airlines Logo
3:00 pm - 4:45 amSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
21h 45m1 stop Frankfurt am Main
Multiple Airlines Logo
12:25 am - 12:55 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
28h 30m1 stop Incheon Intl
$1,419Multiple Airlines
Wed, Nov 25 - Wed, Mar 31
Multiple Airlines Logo
10:10 am - 12:00 pmSEA  Seattle/Tacoma Intl-UBN Ulaanbaatar Chinggis Khaan
33h 50m3 stops Vancouver Intl Beijing Capital Hohhot
Multiple Airlines Logo
6:10 am - 9:58 pmUBN  Ulaanbaatar Chinggis Khaan-SEA Seattle/Tacoma Intl
30h 48m2 stops Beijing Capital Vancouver Intl
$1,495Multiple Airlines
Booking Insights

Price, demand and travel trends for Seattle to Mongolia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Seattle to Mongolia right now?

The cheapest fare from Seattle to Mongolia in the last week was $1,111 round-trip, to Ulaanbaatar Chinggis Khaan (UBN).

Which airport in Mongolia is the cheapest to fly to from Seattle?

All flights from Seattle to Mongolia arrive at Ulaanbaatar Chinggis Khaan (UBN). On average, round-trip fares are around $1,265.

What’s the cheapest day to fly from Seattle to Mongolia?

Thursday tends to be the cheapest day to fly from Seattle to Mongolia, while Monday is the most expensive. Fares run about 42% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Seattle to Mongolia?

Data from the past 12 months shows it's cheapest to fly to Mongolia during the evening with average prices of $991. The night is the most expensive time to fly, with average prices of $1,538.

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Key details for Seattle to Mongolia flights

Low season

December

Cheapest flight

$604
Beat the crowds with an average 91% drop in travelers.
The most popular month to fly with an average 170% increase in travelers.
One-way flight from Seattle to Ulaanbaatar

Your Seattle to Mongolia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Seattle to Mongolia?

    Fares from Seattle to Mongolia are around their usual level right now. A round-trip under $992 is considered a good deal, so it's worth keeping an eye out, or setting a Price Alert to catch price changes.

  • How much should I budget for a flight from Seattle to Mongolia?

    Over the past 12 months, round-trip fares from Seattle to Mongolia have ranged from $992 to $1,584.

  • What airlines fly nonstop from Seattle to Mongolia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Seattle to Mongolia. One-stop options include:

    • Korean Air
    • Delta
    • Hainan Airlines

  • Which cabin classes are available on flights from Seattle to Mongolia?

    On flights from Seattle to Mongolia you can only book Economy Class.

Your guide to booking Seattle to Mongolia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for August when flights are typically cheapest and avoid April when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Monday cost about 42% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Ulaanbaatar, which is the most popular destination in Mongolia. From there, it's easy to continue on to other popular destinations such as Dalanzadgad, Erdenet and Olgii.

Reviews of the top airline flying from Seattle to Mongolia

 
Need help choosing which airline to fly with from Seattle to Mongolia? 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.
8.1
Asiana AirlinesOverall score based on 563 reviews
8.3Boarding
8.0Food
7.6Entertainment
8.0Comfort
8.5Crew
Airline reviews

Waited a long time at JFK to board with no information being readily available.Left about 45 minutes late and it was 2:45 AM in JFK.Nothing todo. Second deck of the Airbus is more comfortable or seems that way because there is less people. Food was OK. The food on secondleg was better as we had ordered it before hand. We thought we had did that on the long first leg but we were told we did not. Cabin crew was generally nice. There are people who lean back when eating as they wait for food to be delivered and know no one will check -- drag. TV selection was awful movies OK. Comfortable all in all.

8.0 ExcellentJeff, Aug 2026
Read more Asiana Airlines reviews

Waited a long time at JFK to board with no information being readily available.Left about 45 minutes late and it was 2:45 AM in JFK.Nothing todo. Second deck of the Airbus is more comfortable or seems that way because there is less people. Food was OK. The food on secondleg was better as we had ordered it before hand. We thought we had did that on the long first leg but we were told we did not. Cabin crew was generally nice. There are people who lean back when eating as they wait for food to be delivered and know no one will check -- drag. TV selection was awful movies OK. Comfortable all in all.

Not enough seat cushion. Butt was hurting especially on long flight. Not enough movie selection. Entertainment was outdated. Coffee served was cold. Other than that flight was good.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

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.

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 amazing. I was not expecting the phenomenal customer service Asiana provides.

The boarding process was good. The toilet could be better maintained.

It’s wonderful service aboard. Delayed for departure but arrival in Korea went so well.

More options for your flight from Seattle to Mongolia

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