HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$259+ Cheap flights from Illinois to Helena (HLN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Helena with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Helena

Keep the following information in mind while searching for Illinois to Helena flight deals. Data was last updated November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$402
(Alaska Airlines)

One-way from

$259
(Alaska Airlines)
Provider with most accurate pricing for Chicago (CHI)-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Helena flights.
Search Deals
From Illinois to Helena
Search Deals
One-way flight from Illinois to Helena
Search Deals

Find flight deals from Illinois to Helena

Cheapest flights from Illinois to Helena
Explore the most affordable flight options available from Illinois to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:00 amORD - HLN
1 stop12h 51mAlaska Airlines
Wed 12/176:28 pmHLN - ORD
2 stops19h 09mAlaska Airlines
Deal found 11/2$438
This Alaska Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:35 pmORD - HLN
1 stop27h 16mAlaska Airlines
Sun 12/146:28 pmHLN - ORD
1 stop10h 53mAlaska Airlines
Deal found 11/1$462
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:20 amORD - HLN
1 stop6h 05mDelta
Wed 12/171:06 pmHLN - ORD
1 stop7h 15mDelta
Deal found 11/3$478
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:20 amORD - HLN
1 stop6h 05mDelta
Sun 12/215:30 amHLN - ORD
1 stop6h 11mDelta
Deal found 11/1$537
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:30 pmORD - HLN
2 stops9h 00mDelta
Sun 12/145:30 amHLN - ORD
2 stops10h 27mDelta
Deal found 11/1$627
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:26 pmSTL - HLN
1 stop25h 29mAlaska Airlines
Wed 12/316:32 pmHLN - STL
1 stop20h 54mAlaska Airlines
Deal found 11/2$655
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:43 amPIA - HLN
1 stop5h 44mUnited Airlines
Thu 11/202:22 pmHLN - PIA
1 stop5h 34mUnited Airlines
Deal found 11/1$695
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:00 amORD - HLN
1 stop10h 36mAlaska Airlines
Thu 11/206:13 pmHLN - ORD
1 stop16h 50mAlaska Airlines
Deal found 11/2$740
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:26 pmSTL - HLN
1 stop25h 29mAlaska Airlines
Sun 1/46:32 pmHLN - STL
1 stop20h 54mAlaska Airlines
Deal found 11/2$756
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:45 pmSTL - HLN
1 stop7h 46mUnited Airlines
Tue 12/302:26 pmHLN - STL
1 stop7h 03mUnited Airlines
Deal found 11/2$758
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/191:15 pmMDW - HLN
2 stops10h 15mDelta
Thu 11/201:06 pmHLN - MDW
2 stops9h 34mDelta
Deal found 11/2$767
This Alaska Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:26 pmSTL - HLN
1 stop25h 29mAlaska Airlines
Thu 1/16:32 pmHLN - STL
1 stop28h 27mAlaska Airlines
Deal found 11/2$776

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Helena 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 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Illinois to Helena that are best for you.

Fly from

Illinois

Fly to

Helena

Route

Depart

Return

Price

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Thu 3/5

7:45 am-3:43 pm

1 stop8h 58m

Helena

Mon 3/9

4:10 pm-5:50 pm

1 stop24h 40m

$402

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sun 12/14

6:00 am-5:51 pm

1 stop12h 51m

Helena

Wed 12/17

6:28 pm-2:37 pm

2 stops19h 09m

$438

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sun 12/14

7:20 am-12:25 pm

1 stop6h 05m

Helena

Wed 12/17

5:30 am-12:40 pm

1 stop6h 10m

$478

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

Wed 4/22

1:00 pm-10:34 pm

2 stops10h 34m

Helena

Sat 4/25

5:45 am-9:45 pm

2 stops15h 00m

$527

PeoriaHelena

PIA - HLN

PIAHLN

Greater Peoria

Wed 4/15

8:50 am-1:27 pm

1 stop5h 37m

Helena

Sat 4/18

2:30 pm-8:47 pm

1 stop5h 17m

$587

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 12/29

5:26 pm-5:55 pm

1 stop25h 29m

Helena

Wed 12/31

6:32 pm-4:26 pm

1 stop20h 54m

$655

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

Tue 12/2

1:50 pm-10:30 pm

2 stops9h 40m

Helena

Sat 12/6

1:06 pm-11:47 pm

2 stops9h 41m

$669

PeoriaHelena

PIA - HLN

PIAHLN

Greater Peoria

Sun 11/16

6:45 am-1:27 pm

2 stops7h 42m

Helena

Thu 11/20

2:22 pm-8:56 pm

1 stop5h 34m

$700

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 12/29

2:45 pm-9:31 pm

1 stop7h 46m

Helena

Wed 12/31

2:26 pm-2:26 pm

2 stops23h 00m

$756

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 12/29

5:26 pm-5:55 pm

1 stop25h 29m

Helena

Sun 1/4

6:32 pm-4:26 pm

1 stop20h 54m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 39 results
1
2
3
4

Best time to book a flight from Illinois to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Illinois 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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Helena

What is the cheapest month to book a flight from Illinois to Helena?

Currently, January is the cheapest month in which you can book a flight from Illinois to Helena (average of $191). Flying from Illinois to Helena in March is currently the most expensive (average of $289). 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.

Related info for your journey

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

  • What airport do you fly into for flights to Helena from Illinois?

    For a flight from Illinois to Helena, you will be flying into Helena. Helena (HLN) is just 2.7 mi from the center of the city.

  • How long is the flight from Illinois to Helena?

    A quick flight from Illinois to Helena can take about 5h 37m. Alaska Airlines provides one of the quickest options available for as low as $587. The distance between Illinois and Helena is about 1182 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Helena one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $259. Delta flights start at $269 while deals on United Airlines start at $280 one-way.

  • What are the most popular routes from Illinois to Helena?

    When deciding which route to take from Illinois to Helena consider Chicago O'Hare Intl - Helena, Lambert-St Louis - Helena or Greater Peoria - Helena as they are the most popular.

  • Can I find deals for flights from Illinois to Helena that include hotel bookings?

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

  • How can I find direct flights from Illinois to Helena?

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

  • Can I find deals for business class flights from Illinois to Helena?

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

  • What is the cheapest month to book a flight from Illinois to Helena?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Helena (average of $191). Flying from Illinois to Helena in March is currently the most expensive (average of $289). 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 Illinois to Helena

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Bozeman flights
O'Hare Intl to Bozeman flights
John F Kennedy Intl to Bozeman flights
Dulles Intl to Bozeman flights
LaGuardia to Bozeman flights
Las Vegas to Kalispell flights
Baltimore to Bozeman flights
Boston to Bozeman flights
Minneapolis to Bozeman flights
Reagan-National to Bozeman flights
Dallas/Fort Worth to Bozeman flights
Atlanta to Bozeman flights
Los Angeles to Bozeman flights
Seattle to Bozeman flights
Denver to Bozeman flights
Dallas/Fort Worth to Kalispell flights
San Francisco to Bozeman flights
Minneapolis to Kalispell flights
Seattle to Billings flights
Denver to Kalispell flights
Philadelphia to Bozeman flights
John F Kennedy Intl to Kalispell flights
San Francisco to Kalispell flights
Charlotte to Bozeman flights
Santa Ana to Bozeman flights
Seattle to Kalispell flights
Denver to Missoula flights
Newark to Kalispell flights
Tampa to Bozeman flights
Boston to Kalispell flights
Hobby to Kalispell flights
Hobby to Bozeman flights
Los Angeles to Kalispell flights
Seattle to Missoula flights
Detroit to Bozeman flights
LaGuardia to Kalispell flights
Atlanta to Kalispell flights
Raleigh to Bozeman flights
Minneapolis to Billings flights
George Bush Intcntl to Bozeman flights
Pittsburgh to Bozeman flights
Dallas/Fort Worth to Missoula flights
Minneapolis to Missoula flights
Midway to Bozeman flights
Ontario to Kalispell flights
Dallas/Fort Worth to Billings flights
George Bush Intcntl to Kalispell flights
Ontario to Bozeman flights
Sacramento to Missoula flights
San Diego to Bozeman flights

Top airline flying from Illinois to Helena

Discover the top airline that operate flights from Illinois to Helena. 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 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$298Average$694FlexibilityNo cancel feeOn-time69%

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.