Earn point on your loyalty program!arrow arc left

Cheap flights from Denver (DEN) to Ulaanbaatar (ULN)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)

How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Denver to Ulaanbaatar in June , July 2026

29 Jun - 13 Jul $ 2,028.00
DEN
Denver
United Airlines
1 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
United Airlines
1 STOPS
DEN
Denver
Pick dates
27 Jun - 13 Jul $ 2,078.00
DEN
Denver
United Airlines
1 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
United Airlines
1 STOPS
DEN
Denver
Pick dates
27 Jun - 13 Jul $ 2,083.00
DEN
Denver
United Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
United Airlines
1 STOPS
DEN
Denver
Pick dates

Last minute flights from Denver to Ulaanbaatar

27 Jun - 30 Jun $ 2,677.00
DEN
Denver
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
2 STOPS
DEN
Denver
Pick dates
28 Jun - 30 Jun $ 2,776.00
DEN
Denver
Air Canada
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Air Canada
2 STOPS
DEN
Denver
Pick dates
27 Jun - 30 Jun $ 2,778.00
DEN
Denver
Air Canada
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Air Canada
2 STOPS
DEN
Denver
Pick dates

One-way flights to Ulaanbaatar from Denver

7:35 PM - 4:30 PM
United Airlines
2 Stops
35h 20m
DEN - ULN
$ 1,234
Kiwi
Pick dates
11:40 AM - 4:30 PM
United Airlines
1 Stops
19h 15m
DEN - ULN
$ 1,305
Kiwi
Pick dates
11:40 AM - 4:30 PM
United Airlines
1 Stops
19h 15m
DEN - ULN
$ 1,455
Kiwi
Pick dates

How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to Ulaanbaatar (ULN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.