$273 Cheap Delta flights from St. Louis to Helena (STL to HLN)

Find The Best Day To Fly from St. Louis to Helena

Amazing Delta STL to HLN Flight Deals

The cheapest flights to Helena Regional found within the past 7 days were $519 round trip and $273 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from Lambert-St. Louis Intl. Airport (STL) to Helena Regional Airport right now?
It’s wise to learn about any travel advice reports and quarantine requirements in effect in your destination. Be sure to check out the Covid-19 Travel Advisor for up-to-date info on flying to Helena Regional Airport from Lambert-St. Louis Intl. Airport (STL).
What terminal is Delta Air Lines at St. Louis Lambert International Airport?
The information printed on tickets can vary from airline to airline. If you’re traveling from Lambert Field to Helena Regional Airport (HLN) with Delta Air Lines and you can’t locate your terminal details, contact the airline.
Are there Delta Air Lines non-stop flights from STL to HLN?
You won’t be able to fly direct between Lambert Field and Helena Regional Airport with Delta Air Lines. Be ready to make at least one stopover if you need to stick to this route and airline.
How long is a Delta Air Lines flight from STL to HLN?
Lose yourself in a movie or two, listen to a podcast or just put your seat back and forget your worries. Whatever interests you, find a way to entertain yourself during the 4 hours and 51 minutes that it takes to go from STL to HLN with Delta Air Lines.
How many direct and indirect flights does Delta Air Lines fly from STL to HLN?
You can take your pick of roughly 2 flights each day with Delta Air Lines from Lambert Field to Helena Regional Airport (HLN).
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Helena Regional Airport (HLN), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Delta flight from St. Louis STL to Helena HLN 

To find the best deals on flights to St. Louis from Helena with Delta, just enter your travel dates, filter by Delta, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Helena HLN with Delta 

If you’re planning a round trip, booking return flights with Delta is usually the most cost-effective option. With airfares ranging from $519 to $571, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Delta flights from St. Louis STL to Helena HLN 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Delta flight from St. Louis to Helena costs from $273. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Helena HLN from  St. Louis STL with Delta 

To find a cheap Delta flight from St. Louis STL to Helena HLN, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Delta flights from St. Louis STL to Helena HLN 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as June, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Helena HLN with Delta 

If you’re keen to be on Helena soil fast, don’t waste time with a stopover—filter your search results to show direct Delta flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Delta flights from St. Louis STL to Helena HLN 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Helena HLN from  St. Louis STL with Delta on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Travelers ❤️ these 🏨 after their flight to Helena

Baymont by Wyndham Helena
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2.5 out of 5
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This hotel features an indoor pool and a gym. Traveling on business? Take advantage of the business center and free WiFi in public areas. Enjoy the hot tub and ...
8/10 Very Good! (1,423 reviews)
"Just what we liked and needed for the price. Staff likeable, pleasant and helpful. The room was clean and comfortable. Would definitely stay again!"

Reviewed on May 9, 2025

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Holiday Inn Express Hotel & Suites Helena by IHG
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2.5 out of 5
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This hotel features an indoor pool and a 24-hour gym. Traveling on business? Take advantage of the 24-hour business center and free WiFi in public areas. Enjoy ...
9/10 Wonderful! (677 reviews)
"The hotel was nice & clean, but the breakfast options were very mediocre. Loved that it was in walking distance to two different restaurants."

Reviewed on May 4, 2025

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La Quinta Inn & Suites by Wyndham Helena
La Quinta Inn & Suites by Wyndham Helena
2.5 out of 5
701 Washington St, Helena, MT
This hotel features an outdoor pool and a 24-hour gym. Traveling on business? Take advantage of the business center and free WiFi in public areas. Guests will ...
7.4/10 Good! (1,001 reviews)
"Good for the price. Clean and tidy. But our beds were not comfortable - hard and not cozy. But, good for the night instead of driving."

Reviewed on May 8, 2025

La Quinta Inn & Suites by Wyndham Helena
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.