Round-trip from | $423 (United Airlines) |
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Fly from
Fly to
Route
Depart
Return
Price
HelenaSt. Louis
HLN - STL
HLNSTL
Helena
Mon 10/6
2:44 pm-8:46 pm
1 stop5h 02m
Lambert-St Louis
Wed 10/8
9:00 am-2:09 pm
1 stop6h 09m
HelenaSt. Louis
HLN - STL
HLNSTL
Helena
Mon 10/6
6:18 pm-12:03 am
1 stop28h 45m
Lambert-St Louis
Thu 10/9
3:57 pm-5:41 pm
1 stop26h 44m
HelenaSt. Louis
HLN - STL
HLNSTL
Helena
Fri 8/15
1:00 pm-11:22 pm
2 stops9h 22m
Lambert-St Louis
Tue 8/19
7:35 am-12:20 pm
1 stop5h 45m
Currently, August is the cheapest month in which you can book a flight from Helena to St. Louis (average of $311). Flying from Helena to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Crew
Food
Boarding
Comfort
Entertainment
Overall
Reviews
Jonathan,Jul 2025
SEA - BOS
Crew
Food
Boarding
Comfort
Entertainment
Overall
Reviews
Jonathan,Jul 2025
SEA - BOS
Crew
Food
Boarding
Comfort
Entertainment
Overall
Reviews
Jonathan,Jul 2025
SEA - BOS
Crew
Food
Boarding
Comfort
Entertainment
Overall
Reviews
Jonathan,Jul 2025
SEA - BOS