Cheap flights from St. Louis to Helena from $620
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Helena departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights
Alaska Airlines flights from St. Louis to Helena
Our best Alaska Airlines deals on St. Louis to Helena flight tickets
United Airlines flights from St. Louis to Helena
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How to get the cheapest flight ticket from St. Louis to Helena
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Helena?
The cheapest day to depart from St. Louis to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $448. The most expensive day to fly to Helena is Thursday, with ticket prices averaging around $760.
What is the cheapest time of day to depart on your flight to Helena?
According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from St. Louis to Helena in the morning for as low as $538. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $888.
When to book flights from St. Louis to Helena
Cheap St. Louis to Helena (STL to HLN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Helena
How far is Lambert-St Louis to Helena by plane?
The distance between Lambert-St Louis and Helena is about 1232.9 mi. Flights usually cover this in 5h 03m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lambert-St Louis Airport to Helena Airport?
Prices for flights from Lambert-St Louis Airport to Helena Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Helena Airport?
There are 2 operators available for flights from Lambert-St Louis Airport to Helena Airport as of February 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Helena Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Helena?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Helena is Delta, representing 50% of all bookings. The subsequent popular airline is United Airlines at 50%.
Best airlines flying from St. Louis to Helena
Compare and see reviews for airlines that fly from St. Louis to Helena with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $333 | Free Cancellation | Rating 8.0 8,187 reviews | |||
| PriceFrom $408 | Free Cancellation | Rating 7.4 8,746 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Helena?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Helena for you.
Can I find flights from St. Louis to Helena with flexible booking policies on momondo?
momondo does allow users to show only those flights to Helena from St. Louis which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from St. Louis to Helena?
Once all potential St. Louis to Helena flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from St. Louis to Helena right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Helena from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.