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

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1 Adults (11+)
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 2025

27 Nov - 15 Dec $ 1,213.00
STL
St Louis
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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27 Nov - 15 Dec $ 1,262.00
STL
St Louis
Frontier Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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27 Nov - 08 Dec $ 1,282.00
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

27 Nov - 01 Dec $ 1,733.00
STL
St Louis
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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27 Nov - 01 Dec $ 1,765.00
STL
St Louis
Alaska Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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27 Nov - 01 Dec $ 1,776.00
STL
St Louis
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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One-way flights to Ulaanbaatar from St Louis

3:14 PM - 8:45 PM
Asiana Airlines
3 Stops
42h 16m
STL - ULN
$ 628
Kiwi
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7:57 PM - 8:45 PM
Asiana Airlines
3 Stops
37h 33m
STL - ULN
$ 677
Kiwi
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7:00 AM - 7:45 AM
Korean Air
2 Stops
37h 25m
STL - ULN
$ 688
Kiwi
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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)
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.