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Cheap flights from Chicago (CHI) to Ulaanbaatar (ULN)

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How to find the cheapest flight from Chicago (CHI) to Ulaanbaatar (ULN)

How to find the cheapest flight from Chicago (CHI) to Ulaanbaatar (ULN)
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How to find the cheapest flight from Chicago (CHI) to Ulaanbaatar (ULN)
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How to find the cheapest flight from Chicago (CHI) to Ulaanbaatar (ULN)
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Cheap flights from Chicago to Ulaanbaatar in August , September 2026

29 Aug - 15 Sep $ 1,349.00
CHI
Chicago
Frontier Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
CHI
Chicago
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27 Aug - 10 Sep $ 1,467.00
CHI
Chicago
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
2 STOPS
CHI
Chicago
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19 Aug - 08 Sep $ 2,045.00
CHI
Chicago
All Nippon Airways
1 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
All Nippon Airways
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to Ulaanbaatar

29 Aug - 31 Aug $ 1,645.00
CHI
Chicago
Frontier Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
2 STOPS
CHI
Chicago
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27 Aug - 01 Sep $ 1,782.00
CHI
Chicago
MIAT Mongolian Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
MIAT Mongolian Airlines
1 STOPS
CHI
Chicago
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19 Aug - 31 Aug $ 7,572.00
CHI
Chicago
All Nippon Airways
1 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
All Nippon Airways
1 STOPS
CHI
Chicago
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One-way flights to Ulaanbaatar from Chicago

12:30 PM - 8:20 PM
Korean Air
1 Stops
21h 20m
CHI - ULN
$ 610
Kiwi
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3:43 PM - 8:20 PM
Asiana Airlines
2 Stops
42h 22m
CHI - ULN
$ 628
Kiwi
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11:50 AM - 4:30 PM
United Airlines
1 Stops
20h 5m
CHI - ULN
$ 1,052
Kiwi
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How to find the cheapest flight from Chicago (CHI) to Ulaanbaatar (ULN)

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