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 May , June 2026

28 May - 06 Jun $ 1,807.00
DEN
Denver
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
DEN
Denver
Pick dates
28 May - 07 Jun $ 2,313.00
DEN
Denver
Turkish Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Turkish Airlines
1 STOPS
DEN
Denver
Pick dates
28 May - 07 Jun $ 4,309.00
DEN
Denver
Korean Air
1 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Korean Air
2 STOPS
DEN
Denver
Pick dates

Last minute flights from Denver to Ulaanbaatar

28 May - 01 Jun $ 1,853.00
DEN
Denver
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
DEN
Denver
Pick dates
28 May - 01 Jun $ 1,889.00
DEN
Denver
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
DEN
Denver
Pick dates
28 May - 01 Jun $ 1,890.00
DEN
Denver
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
DEN
Denver
Pick dates

One-way flights to Ulaanbaatar from Denver

8:00 AM - 8:35 AM
Korean Air
3 Stops
37h 10m
DEN - ULN
$ 1,028
Kiwi
Pick dates
6:05 AM - 8:35 AM
Korean Air
2 Stops
39h 5m
DEN - ULN
$ 1,193
Kiwi
Pick dates
3:06 PM - 6:25 PM
Turkish Airlines
2 Stops
26h 14m
DEN - ULN
$ 1,301
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.