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Flights from Denver to Ulaanbaatar

Search cheap flights from Denver to Ulaanbaatar in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$744, and round-trip tickets start at US$1,422.

      • DEN 19:30
        35h 25m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Thu, Sep 3 | United Airlines
        UBN 09:55
        16h 10m
        1 stop
        DEN 12:05
        Ulaanbaatar - Denver | Fri, Sep 11 | United Airlines
        US$1,422 US$2,643
        46% off
        46% off
        US$2,643 US$1,422
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Thu, Sep 3 | Turkish Airlines
        UBN 09:10
        23h 15m
        1 stop
        DEN 18:25
        Ulaanbaatar - Denver | Thu, Sep 10 | Turkish Airlines
        US$1,459 US$2,643
        45% off
        45% off
        US$2,643 US$1,459
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Wed, Aug 26 | United Airlines
        UBN 09:55
        16h 15m
        1 stop
        DEN 12:10
        Ulaanbaatar - Denver | Wed, Sep 2 | United Airlines
        US$1,645 US$2,643
        38% off
        38% off
        US$2,643 US$1,645
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Thu, Aug 6 | Turkish Airlines
        UBN 07:25
        25h
        1 stop
        DEN 18:25
        Ulaanbaatar - Denver | Thu, Aug 13 | Turkish Airlines
        US$1,672
        37% off
        US$2,643 US$1,672
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Fri, Aug 28 | United Airlines
        UBN 09:55
        16h 15m
        1 stop
        DEN 12:10
        Ulaanbaatar - Denver | Fri, Sep 4 | United Airlines
        US$1,698
        36% off
        US$2,643 US$1,698
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Sat, Jul 18 | Turkish Airlines
        UBN 07:25
        25h
        1 stop
        DEN 18:25
        Ulaanbaatar - Denver | Sat, Jul 25 | Turkish Airlines
        US$1,762
        33% off
        US$2,643 US$1,762
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Wed, Aug 26 | All Nippon Airways
        UBN 09:55
        16h 15m
        1 stop
        DEN 12:10
        Ulaanbaatar - Denver | Wed, Sep 2 | United Airlines
        US$1,822
        31% off
        US$2,643 US$1,822
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Sat, Aug 1 | Turkish Airlines
        UBN 09:10
        23h 15m
        1 stop
        DEN 18:25
        Ulaanbaatar - Denver | Sat, Aug 8 | Turkish Airlines
        US$1,846
        30% off
        US$2,643 US$1,846
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Fri, Sep 4 | United Airlines
        UBN 09:55
        16h 15m
        1 stop
        DEN 12:10
        Ulaanbaatar - Denver | Sun, Sep 6 | United Airlines
        US$1,858
        30% off
        US$2,643 US$1,858
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Wed, Sep 2 | United Airlines
        UBN 09:10
        23h 15m
        1 stop
        DEN 18:25
        Ulaanbaatar - Denver | Thu, Sep 10 | Turkish Airlines
        US$1,929
        27% off
        US$2,643 US$1,929
      • DEN 13:00
        17h 25m
        1 stop
        ULN 14:00
        Denver - Ulaanbaatar | Wed, Jul 15 | Normal Airline
        ULN 15:00
        6h
        Nonstop
        DEN 16:00
        Ulaanbaatar - Denver | Fri, Jul 17 | Normal Airline
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      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Fri, Jul 31 | Turkish Airlines
        US$744 US$1,595
        53% off
        53% off
        US$1,595 US$744
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Sun, Aug 9 | Turkish Airlines
        US$776 US$1,595
        51% off
        51% off
        US$1,595 US$776
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Wed, Aug 5 | Turkish Airlines
        US$844 US$1,595
        47% off
        47% off
        US$1,595 US$844
      • DEN 20:25
        20h 55m
        1 stop
        UBN 07:20
        Denver - Ulaanbaatar | Wed, Jul 29 | Turkish Airlines
        US$897
        44% off
        US$1,595 US$897
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Thu, Jul 30 | United Airlines
        US$1,037
        35% off
        US$1,595 US$1,037
      • DEN 19:35
        35h 20m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Fri, Jul 31 | United Airlines
        US$1,081
        32% off
        US$1,595 US$1,081
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Tue, Aug 4 | United Airlines
        US$1,084
        32% off
        US$1,595 US$1,084
      • DEN 11:40
        19h 15m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Thu, Aug 20 | United Airlines
        US$1,095
        31% off
        US$1,595 US$1,095
      • DEN 19:35
        35h 20m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Wed, Aug 5 | United Airlines
        US$1,128
        28% off
        US$1,595 US$1,128
      • DEN 05:00
        25h 55m
        1 stop
        UBN 20:55
        Denver - Ulaanbaatar | Tue, Aug 18 | United Airlines
        US$1,164
        27% off
        US$1,595 US$1,164
      • DEN 13:00
        17h 25m
        1 stop
        ULN 14:00
        Denver - Ulaanbaatar | Wed, Jul 15 | Normal Airline
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Displayed flight fares from Denver to Ulaanbaatar are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Cheapest airlines flights from Denver to Ulaanbaatar

You can choose from 2 airlines that fly from Denver to Ulaanbaatar, including WestJet, Turkish Airlines, Turkish Airlines has lowest fares on this route.
WestJet logo WestJet
Turkish Airlines logo Turkish Airlines
Airlines are determined based on actual purchased flight tickets from Denver to Ulaanbaatar according to previous 12 months data from Trip.com.

Denver to Ulaanbaatar Flight Details

The distance between Denver and Ulaanbaatar is about 9,780.75 km. Based on Trip.com's latest data, travel demand is highest in January. The off-season for travel is October.

Cheapest one-way flight priceUS$744
Cheapest return ticket priceUS$1,422
Cheapest monthOctober
Peak season for travelJanuary
Flight distance9,780.75 km
Popular airlineWestJet
Flight statistics for the Denver–Ulaanbaatar route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Denver to Ulaanbaatar (DEN-ULN)?

    Based on Trip.com data, Turkish Airlines offers one-way fares as low as US$744 on Cheapest nonstop routes (e.g. DEN to UBN on Fri, Jul 31), while United Airlines offers Cheapest nonstop round-trips from US$1,422 departing on Thu, Sep 3 and returning on Fri, Sep 11.
  • At the moment, you can catch a nonstop flight from Denver to Ulaanbaatar with the following airlines, including: WestJet 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 Denver to Ulaanbaatar 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 Denver to Ulaanbaatar, 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 Fri, Jul 31, with one-way flights priced at just US$744.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Turkish 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 Ulaanbaatar travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Denver to Ulaanbaatar is October, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Denver to Ulaanbaatar on July 28, 2026 with Turkish Airlines, with prices starting at US$809.
  • You can land at any one of the following hubs in Ulaanbaatar, with Denver International Airport to Chinggis Khaan International Airport (DEN-UBN) is by far the most common option on this route: Chinggis Khaan International Airport (UBN) Buyant Ukhaa International Airport (ULN).
  • The time difference between Ulaanbaatar and Denver is 15h.
  • 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.

Trip.com Airline Insights on Flights from Denver to Ulaanbaatar

Which airline offers the cheapest direct flights from Denver to Ulaanbaatar?

Data is based on the average price of all nonstop flights from Denver to Ulaanbaatar on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, United Airlines provides the lowest-priced direct flights from Denver to Ulaanbaatar, with fares starting at US$564.

US$374
US$564
US$755
US$946
US$1,136
United Airlines
US$564
United Airlines
Hawaiian Airlines
US$940
Hawaiian Airlines
Alaska Airlines
US$1,044
Alaska Airlines
Turkish Airlines
US$1,066
Turkish Airlines
Korean Air
US$1,136
Korean Air

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

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.