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Flights from Ulaanbaatar to Guam

Find flight deals from Ulaanbaatar to Guam for the next 3 months. Book one way flights from $357 or round trip flights from $680.

      • UBN 1:00 PM
        24h 35m
        1 stop
        GUM 3:35 PM
        Ulaanbaatar - Guam | Thu, May 28 | Korean Air
        GUM 5:20 PM
        19h 50m
        1 stop
        UBN 11:10 AM
        Guam - Ulaanbaatar | Wed, Jun 3 | Korean Air
        $680 $1,082
        37% off
        37% off
        $1,082 $680
      • UBN 1:00 PM
        24h 35m
        1 stop
        GUM 3:35 PM
        Ulaanbaatar - Guam | Mon, Jun 1 | Korean Air
        GUM 5:20 PM
        19h 50m
        1 stop
        UBN 11:10 AM
        Guam - Ulaanbaatar | Mon, Jun 8 | Korean Air
        $680 $1,082
        37% off
        37% off
        $1,082 $680
      • UBN 1:00 PM
        12h 35m
        1 stop
        GUM 3:35 AM
        Ulaanbaatar - Guam | Fri, May 22 | Korean Air
        GUM 4:40 AM
        20h 25m
        1 stop
        UBN 11:05 PM
        Guam - Ulaanbaatar | Mon, May 25 | Jin Air
        $702 $1,082
        35% off
        35% off
        $1,082 $702
      • UBN 8:40 AM
        16h 55m
        1 stop
        GUM 3:35 AM
        Ulaanbaatar - Guam | Fri, May 22 | Miat Mongolian Airlines
        GUM 4:40 AM
        20h 25m
        1 stop
        UBN 11:05 PM
        Guam - Ulaanbaatar | Mon, May 25 | Jin Air
        $716
        34% off
        $1,082 $716
      • UBN 1:40 PM
        11h 55m
        1 stop
        GUM 3:35 AM
        Ulaanbaatar - Guam | Mon, Jun 1 | Jeju Air
        GUM 12:50 AM
        13h 50m
        1 stop
        UBN 12:40 PM
        Guam - Ulaanbaatar | Mon, Jun 8 | Jin Air
        $750
        31% off
        $1,082 $750
      • UBN 8:40 AM
        14h 20m
        1 stop
        GUM 1:00 AM
        Ulaanbaatar - Guam | Wed, Jun 24 | Miat Mongolian Airlines
        GUM 2:00 AM
        26h 45m
        1 stop
        ULN 2:45 AM
        Guam - Ulaanbaatar | Tue, Jun 30 | Air Seoul
        $760
        30% off
        $1,082 $760
      • UBN 8:40 AM
        13h 5m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Tue, Jun 2 | Miat Mongolian Airlines
        GUM 12:50 AM
        29h 40m
        1 stop
        UBN 4:30 AM
        Guam - Ulaanbaatar | Tue, Jun 9 | Jin Air
        $761
        30% off
        $1,082 $761
      • UBN 9:55 AM
        9h 50m
        1 stop
        GUM 9:45 PM
        Ulaanbaatar - Guam | Wed, Jun 24 | United Airlines
        GUM 12:15 PM
        10h 40m
        1 stop
        UBN 8:55 PM
        Guam - Ulaanbaatar | Tue, Jun 30 | United Airlines
        $763
        28% off
        $1,082 $763
      • UBN 8:40 AM
        13h 5m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Thu, May 28 | Miat Mongolian Airlines
        GUM 12:50 AM
        29h 40m
        1 stop
        UBN 4:30 AM
        Guam - Ulaanbaatar | Wed, Jun 3 | Jin Air
        $764
        28% off
        $1,082 $764
      • UBN 8:40 AM
        13h 5m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Mon, Jun 1 | Miat Mongolian Airlines
        GUM 12:50 AM
        27h 55m
        1 stop
        ULN 2:45 AM
        Guam - Ulaanbaatar | Mon, Jun 8 | Jin Air
        $779
        28% off
        $1,082 $779
      • ULN 1:00 PM
        17h 25m
        1 stop
        GUM 2:00 PM
        Ulaanbaatar - Guam | Sat, May 23 | Normal Airline
        GUM 3:00 PM
        6h
        Nonstop
        ULN 4:00 PM
        Guam - Ulaanbaatar | Mon, May 25 | Normal Airline
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        Find more flights
      • UBN 12:25 AM
        22h 35m
        1 stop
        GUM 1:00 AM
        Ulaanbaatar - Guam | Thu, Jun 11 | Asiana Airlines
        $357 $671
        47% off
        47% off
        $671 $357
      • UBN 8:30 PM
        26h 30m
        1 stop
        GUM 1:00 AM
        Ulaanbaatar - Guam | Thu, Jun 11 | Miat Mongolian Airlines
        $385 $671
        43% off
        43% off
        $671 $385
      • UBN 1:00 PM
        24h 35m
        1 stop
        GUM 3:35 PM
        Ulaanbaatar - Guam | Fri, Jun 5 | Korean Air
        $389 $671
        42% off
        42% off
        $671 $389
      • UBN 1:00 PM
        24h 35m
        1 stop
        GUM 3:35 PM
        Ulaanbaatar - Guam | Thu, Jun 11 | Korean Air
        $389
        42% off
        $671 $389
      • UBN 2:50 PM
        30h 55m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Fri, Jun 5 | T'Way Air
        $400
        40% off
        $671 $400
      • UBN 8:30 PM
        25h 15m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Fri, Jun 5 | Miat Mongolian Airlines
        $406
        39% off
        $671 $406
      • UBN 12:25 AM
        21h 20m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Tue, Jun 2 | Asiana Airlines
        $419
        38% off
        $671 $419
      • UBN 8:40 AM
        13h 5m
        1 stop
        GUM 11:45 PM
        Ulaanbaatar - Guam | Tue, Jun 2 | Miat Mongolian Airlines
        $452
        33% off
        $671 $452
      • UBN 12:30 PM
        13h 5m
        1 stop
        GUM 3:35 AM
        Ulaanbaatar - Guam | Thu, Jun 11 | Aero Mongolia
        $471
        30% off
        $671 $471
      • UBN 1:00 PM
        10h
        1 stop
        GUM 1:00 AM
        Ulaanbaatar - Guam | Tue, Jun 2 | Korean Air
        $483
        28% off
        $671 $483
      • ULN 1:00 PM
        17h 25m
        1 stop
        GUM 2:00 PM
        Ulaanbaatar - Guam | Sat, May 23 | Normal Airline
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        Find more flights

Displayed flight fares from Ulaanbaatar to Guam are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Frequently Asked Questions

  • What are the cheapest flights from Ulaanbaatar to Guam (ULN-GUM)?

    Based on Trip.com data, Asiana Airlines offers one-way fares as low as $357 on Cheapest nonstop routes (e.g. UBN to GUM on Thu, Jun 11), while Korean Air offers Cheapest nonstop round-trips from $680 departing on Thu, May 28 and returning on Wed, Jun 3.
  • At the moment, you can catch a nonstop flight from Ulaanbaatar to Guam with the following airlines, including: Miat Mongolian Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Ulaanbaatar to Guam is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Ulaanbaatar to Guam, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jun 11, with one-way flights priced at just $357.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Asiana Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Guam travel is around December.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Ulaanbaatar to Guam is September, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Ulaanbaatar to Guam on May 28, 2026 with Korean Air, with prices starting at $680.
  • You can land at any one of the following hubs in Guam, with Chinggis Khaan International Airport to Antonio B. Won Pat International Airport (UBN-GUM) is by far the most common option on this route: Antonio B. Won Pat International Airport (GUM).
  • The time difference between Guam and Ulaanbaatar is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.