HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$297+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
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

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 July 9, 2026.

This Delta deal was found by Cheapflights users on 7/8. 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 10/77:35 am
ORD
-
HLN
1 stop5h 48m
Delta
Sat 10/171:03 pm
HLN
-
ORD
1 stop7h 57m
Delta
Deal found 7/8$329
This Delta deal was found by Cheapflights users on 7/8. 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 10/73:39 pm
ORD
-
HLN
2 stops7h 45m
Delta
Tue 10/131:03 pm
HLN
-
ORD
1 stop7h 57m
Delta
Deal found 7/8$334
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/174:40 pm
STL
-
HLN
1 stop5h 50m
United Airlines
Sat 8/222:35 pm
HLN
-
STL
1 stop5h 11m
United Airlines
Deal found 7/7$358
This Delta deal was found by Cheapflights users on 7/8. 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 10/77:35 am
ORD
-
HLN
1 stop5h 48m
Delta
Wed 10/141:03 pm
HLN
-
ORD
1 stop7h 57m
Delta
Deal found 7/8$364
This Delta deal was found by Cheapflights users on 7/8. 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 10/73:39 pm
ORD
-
HLN
2 stops7h 45m
Delta
Mon 10/121:03 pm
HLN
-
ORD
1 stop7h 57m
Delta
Deal found 7/8$369
This United Airlines deal was found by Cheapflights users on 7/5. 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.
Sat 8/153:56 pm
ORD
-
HLN
1 stop6h 34m
United Airlines
Sat 8/222:35 pm
HLN
-
ORD
1 stop5h 55m
United Airlines
Deal found 7/5$370
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Fri 8/282:42 pm
ORD
-
HLN
1 stop7h 48m
United Airlines
Mon 8/312:35 pm
HLN
-
ORD
1 stop5h 54m
United Airlines
Deal found 7/6$371
This United Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 8/86:00 am
ORD
-
HLN
1 stop8h 33m
United Airlines
Sat 8/152:35 pm
HLN
-
ORD
1 stop6h 17m
United Airlines
Deal found 7/8$389
This Delta deal was found by Cheapflights users on 7/7. 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 8/510:33 am
ORD
-
HLN
2 stops12h 57m
Delta
Sun 8/95:40 am
HLN
-
ORD
1 stop5h 19m
Delta
Deal found 7/7$399
This Delta deal was found by Cheapflights users on 7/8. 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 10/71:28 pm
MDW
-
HLN
2 stops9h 56m
Delta
Fri 10/161:03 pm
HLN
-
MDW
2 stops21h 45m
Delta
Deal found 7/8$407
This United Airlines deal was found by Cheapflights users on 7/8. 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 9/134:40 pm
STL
-
HLN
1 stop5h 50m
United Airlines
Sat 9/192:35 pm
HLN
-
STL
1 stop5h 03m
United Airlines
Deal found 7/8$411
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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.
Sat 10/109:00 am
ORD
-
HLN
1 stop8h 11m
Alaska Airlines
Wed 10/144:48 pm
HLN
-
ORD
1 stop12h 32m
Alaska Airlines
Deal found 7/8$412

Find flight deals from Illinois to Helena

Keep the following information in mind while searching for Illinois to Helena flight deals. Data was last updated July 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$297
(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

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 July 9, 2026.
Use the filters below to find and compare flights from Illinois to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 8/5

10:33 am-10:30 pm

2 stops12h 57m

Helena

Sun 8/9

5:40 am-11:59 am

1 stop5h 19m

$399
Quickest round-trip

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Sat 8/29

9:00 am-1:45 pm

1 stop5h 45m

Helena

Wed 9/2

2:35 pm-8:46 pm

1 stop5h 11m

$419

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 8/22

2:42 pm-9:30 pm

1 stop7h 48m

Helena

Thu 8/27

2:35 pm-11:59 pm

1 stop8h 24m

$419

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Thu 8/27

2:42 pm-9:30 pm

1 stop7h 48m

Helena

Sat 9/5

2:35 pm-9:30 pm

1 stop5h 55m

$444

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Sat 8/15

7:56 pm-4:32 pm

1 stop21h 36m

Helena

Tue 8/18

5:09 pm-9:24 am

2 stops15h 15m

$459

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 11/4

9:31 am-4:04 pm

1 stop7h 33m

Helena

Sat 11/7

4:41 pm-5:40 am

1 stop11h 59m

$459

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sun 8/16

6:00 am-4:32 pm

1 stop11h 32m

Helena

Fri 8/21

5:32 pm-7:21 pm

2 stops24h 49m

$462

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 8/17

7:56 pm-4:32 pm

1 stop21h 36m

Helena

Wed 8/19

5:11 pm-11:59 pm

1 stop29h 48m

$465

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 11/4

8:40 am-1:49 pm

1 stop6h 09m

Helena

Sat 11/7

2:34 pm-9:13 pm

1 stop5h 39m

$479

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 8/21

7:00 am-1:45 pm

1 stop7h 45m

Helena

Sat 8/29

2:35 pm-9:30 pm

1 stop5h 55m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 47 resultsSorted by cheapest first
1
2
3
...
5

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
No data available for this route at this time. Please check back soon.

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 45m. Delta provides one of the quickest options available for as low as $419. The distance between Illinois and Helena is about 1218 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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.

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.