HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Helena to St. Louis (HLN - STL) from $510

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
HLN — STL
Jun 4 — Jun 111
From?
To?
Tue 6/4
Tue 6/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Helena to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 30, 2024.

Popular in

July

Cheapest in

January

Average price

$552

Round-trip from

$319
High demand for flights, 28% potential price rise
Search Deals
Best time to find cheap flights, 35% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Helena to Lambert-St Louis
Search Deals

What is the cheapest day to fly round-trip from Helena to St. Louis?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

What is the cheapest month to fly from Helena to St. Louis?

The best pricing can be found in the month of January. Prices to St. Louis from Helena average $654. You can even find prices in January for less than $654, as users have found deals to St. Louis from as low as $426. The month of July appears to be one of the more expensive times to travel to St. Louis from Helena. Flying in the targeted month can save you up to 39%.

What is the cheapest time of day to fly from HLN to STL?

It’s typically best to fly out from Helena to St. Louis in the afternoon. Doing so could potentially save you 26% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap Alaska Airlines flights from Helena to St. Louis

Explore cheap flight options specifically provided by Alaska Airlines for the route between Helena and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/317:00 amSTL - HLN
1 stop17h 59mAlaska Airlines
Deal found 5/29$510
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/3110:19 amSTL - HLN
2 stops14h 40mAlaska Airlines
Deal found 5/29$543

Helena to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Helena and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/317:00 amSTL - HLN
1 stop17h 59mAlaska Airlines
Deal found 5/29$510
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/3110:19 amSTL - HLN
2 stops14h 40mAlaska Airlines
Deal found 5/29$543
Thu 7/251:11 pmHLN - STL
2 stops9h 28mDelta
Wed 7/312:16 pmSTL - HLN
2 stops9h 16mDelta
Deal found 5/29$693

Find flights from Helena to St. Louis within your budget

Customize your flight search to find flights from Helena to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$510 - $693

Route

Depart

Return

Price

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

1 stop7h 17m

Lambert-St Louis

Wed 7/31

1 stop17h 59m

$510

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

1 stop7h 17m

Lambert-St Louis

Wed 7/31

2 stops14h 40m

$543

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

2 stops9h 28m

Lambert-St Louis

Wed 7/31

2 stops9h 16m

$693

Flights are sorted by cheapest first

Deals found on 5/29

What is the cheapest day to fly from Helena to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Helena to St. Louis. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Helena to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Helena to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Helena with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated May 30, 2024.
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Entertainment

7.3

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Alaska Airlines
8.1
Very good
9,192 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Entertainment

7.3

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Delta
8.0
Very good
10,457 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Entertainment

7.3

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.1

Crew

8.6

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Related info for your journey

Find useful and relevant information for your journey from Helena to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Helena to St. Louis for under $600 on Cheapflights?

    Yes, there are multiple flights from Helena to St. Louis for under $600. The cheapest flight booked recently is on Alaska Airlines for just $510, but on average you can expect to pay $582.

  • What are the cheapest airlines flying from Helena to St. Louis round-trip?

    Alaska Airlines, at $510, was found to be the cheapest airline from Helena to St. Louis. An alternate airline flying to your destination would be Delta. Alaska Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • What does HLN to STL mean?

    HLN and STL are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. HLN to STL refers to a flight route from Helena Airport to Lambert-St Louis Airport.

  • Can I find deals for flights from Helena to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Helena to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Helena to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Helena to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Helena to St. Louis that include hotel bookings?

    Yes. In addition to deals on Helena to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to St. Louis.

  • Can I find deals for business class flights from Helena to St. Louis?

    Yes. Cheapflights offers flight deals from Helena to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Helena to St. Louis that allow pets onboard?

    Many airlines flying from Helena to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Helena to St. Louis?

    Yes, you can often find last-minute deals on Helena to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Helena to St. Louis flight deals updated?

    The Helena to St. Louis flight deals you see on this page were last updated on 5/29.

  • What is the cheapest month to book a flight from Helena to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Helena to St. Louis (average of $319). Flying from Helena to St. Louis in July is currently the most expensive (average of $366). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Helena to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

Billings to Kansas City flights
Bozeman to Kansas City flights
Bozeman to St. Louis flights
Missoula to St. Louis flights
Kalispell to Kansas City flights
Missoula to Kansas City flights
Great Falls to Kansas City flights
Billings to Springfield flights
Billings to St. Louis flights
Helena to Kansas City flights
Kalispell to St. Louis flights
Great Falls to Springfield flights
Bozeman to Springfield flights
Butte to St. Louis flights
Missoula to Columbia flights
Billings to Branson flights
Missoula to Joplin flights
Billings to Columbia flights

Top 2 airlines flying from Helena to St. Louis

Discover the top 2 airlines that operate flights from Helena to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$437Average$561FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$445Average$593FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Cleveland to Orlando flights
Dallas to Nashville flights
Los Angeles to El Salvador flights
Seattle to San Francisco flights
Denver to Nashville flights
San Diego to Sacramento flights
Atlanta to Los Angeles flights
Oakland, California to San Diego flights
New York to Chicago flights
Los Angeles to London Heathrow Airport flights
Las Vegas to Reno flights
Helena to Stockholm flights

Search flights from Helena to St. Louis by cabin class

Find flights from Helena to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Laayoune Hassan I
Flights to Virac
Flights to Figari-Sud Corse
Flights to Edremit/Korfez
Flights to Rhinelander Oneida County
Flights to Girona Costa Brava
Flights to Brainerd Crow Wing County
Flights to Parikia Paros
Flights to Cortez Montezuma County
Flights to Miyakojima Hirara
Flights to Zadar
Flights to Trapani Birgi
Flights to Provincetown
Flights to Oran Es Senia
Flights to Constanţa Mihail Kogalniceanu
Flights to Vava'u Lupepau'U
Flights to Urumqi
Flights to Hakodate
Flights to Naxos
Flights to Dalaman
Flights to Hyannis Barnstable
Flights to Devils Lake
Flights to Bastia Poretta
Flights to Karpathos

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Helena to St. Louis?

When you search for this flight from Helena to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Helena to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from Helena to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Helena to St. Louis with no change fees?

Yes! Cheapflights helps users easily find flights from Helena to St. Louis with no change fees.

Can Cheapflights notify me if prices for flights from Helena to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Helena to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines