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Cheap flights from St Louis (STL) to Ulaanbaatar (ULN)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Ulaanbaatar (ULN)

How to find the cheapest flight from St Louis (STL) to Ulaanbaatar (ULN)
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How to find the cheapest flight from St Louis (STL) to Ulaanbaatar (ULN)
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How to find the cheapest flight from St Louis (STL) to Ulaanbaatar (ULN)
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Cheap flights from St Louis to Ulaanbaatar in November , December 2026

14 Nov - 10 Dec $ 1,511.00
STL
St Louis
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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16 Nov - 10 Dec $ 1,601.00
STL
St Louis
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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26 Nov - 10 Dec $ 1,635.00
STL
St Louis
Frontier Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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Last minute flights from St Louis to Ulaanbaatar

14 Nov - 01 Dec $ 1,538.00
STL
St Louis
Air Canada
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Air Canada
3 STOPS
STL
St Louis
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14 Nov - 01 Dec $ 1,557.00
STL
St Louis
Air Canada
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Air Canada
3 STOPS
STL
St Louis
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26 Nov - 01 Dec $ 1,680.00
STL
St Louis
Air Canada
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Air Canada
3 STOPS
STL
St Louis
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One-way flights to Ulaanbaatar from St Louis

7:59 PM - 8:20 PM
Asiana Airlines
3 Stops
37h 6m
STL - ULN
$ 731
Kiwi
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1:28 PM - 7:45 AM
Korean Air
3 Stops
30h 57m
STL - ULN
$ 834
Kiwi
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8:00 AM - 11:55 PM
MIAT Mongolian Airlines
2 Stops
28h 40m
STL - ULN
$ 869
Kiwi
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How to find the cheapest flight from St Louis (STL) to Ulaanbaatar (ULN)

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