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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 June , July 2026

29 Jun - 25 Jul $ 2,545.00
STL
St Louis
Frontier Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Frontier Airlines
3 STOPS
STL
St Louis
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29 Jun - 10 Jul $ 2,611.00
STL
St Louis
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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29 Jun - 08 Jul $ 2,687.00
STL
St Louis
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
2 STOPS
STL
St Louis
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Last minute flights from St Louis to Ulaanbaatar

27 Jun - 01 Jul $ 2,665.00
STL
St Louis
Alaska Airlines
3 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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28 Jun - 01 Jul $ 2,753.00
STL
St Louis
Alaska Airlines
2 STOPS
ULN
Ulaanbaatar
ULN
Ulaanbaatar
Alaska Airlines
3 STOPS
STL
St Louis
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28 Jun - 01 Jul $ 2,786.00
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

6:14 AM - 4:30 PM
United Airlines
2 Stops
25h 41m
STL - ULN
$ 1,247
Kiwi
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9:06 AM - 4:30 PM
United Airlines
2 Stops
22h 49m
STL - ULN
$ 1,475
Kiwi
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6:01 AM - 4:30 PM
United Airlines
2 Stops
25h 54m
STL - ULN
$ 1,777
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.