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Helena

$317+ Cheap flights from Illinois to Helena (HLN)

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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$317
(Hawaiian Airlines)
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 September 15, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:00 amORD - HLN
1 stop10h 36mHawaiian Airlines
Fri 10/316:13 pmHLN - ORD
1 stop11h 09mHawaiian Airlines
Deal found 9/12$317
This Delta deal was found by Cheapflights users on 9/12. 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.
Tue 10/287:50 amORD - HLN
1 stop5h 30mDelta
Fri 10/311:00 pmHLN - ORD
2 stops27h 18mDelta
Deal found 9/12$353
This Delta deal was found by Cheapflights users on 9/14. 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 06mDelta
Wed 12/175:30 amHLN - ORD
1 stop6h 11mDelta
Deal found 9/14$381
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 10/46:00 amORD - HLN
1 stop12h 41mAlaska Airlines
Fri 10/176:18 pmHLN - ORD
1 stop28h 41mAlaska Airlines
Deal found 9/13$424
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 10/298:00 amORD - HLN
1 stop10h 36mAlaska Airlines
Wed 11/56:13 pmHLN - ORD
2 stops24h 42mAlaska Airlines
Deal found 9/14$431
This United Airlines deal was found by Cheapflights users on 9/13. 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 12/141:51 pmORD - HLN
1 stop8h 31mUnited Airlines
Wed 12/176:30 amHLN - ORD
1 stop7h 25mUnited Airlines
Deal found 9/13$461
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Thu 10/98:49 amORD - HLN
1 stop6h 20mUnited Airlines
Sun 10/125:18 pmHLN - ORD
1 stop5h 41mUnited Airlines
Deal found 9/13$529
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 stops28h 31mAlaska Airlines
Deal found 9/13$538
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 9/296:30 pmSTL - HLN
1 stop21h 51mAlaska Airlines
Fri 10/34:02 pmHLN - STL
1 stop6h 57mAlaska Airlines
Deal found 9/14$608
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/2911:10 amSTL - HLN
2 stops10h 50mUnited Airlines
Fri 10/36:30 amHLN - STL
1 stop5h 14mUnited Airlines
Deal found 9/14$614
This Delta deal was found by Cheapflights users on 9/14. 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 10/2910:40 amMDW - HLN
2 stops12h 36mDelta
Wed 11/55:45 amHLN - MDW
2 stops10h 58mDelta
Deal found 9/14$779
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 12/277:00 amSTL - HLN
1 stop11h 55mAlaska Airlines
Sat 1/36:32 pmHLN - STL
1 stop28h 27mAlaska Airlines
Deal found 9/14$800

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 September 15, 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

Tue 10/28

8:00 am-5:36 pm

1 stop10h 36m

Helena

Fri 10/31

6:13 pm-6:22 am

1 stop11h 09m

$317

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 10/29

7:50 am-12:20 pm

1 stop5h 30m

Helena

Wed 11/5

1:00 pm-9:43 pm

1 stop7h 43m

$353

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Tue 10/28

7:50 am-12:20 pm

1 stop5h 30m

Helena

Fri 10/31

1:00 pm-5:18 pm

2 stops27h 18m

$353

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sun 12/14

7:20 am-12:26 pm

1 stop6h 06m

Helena

Wed 12/17

5:30 am-12:41 pm

1 stop6h 11m

$381

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 10/4

6:00 am-5:41 pm

1 stop12h 41m

Helena

Fri 10/17

6:18 pm-11:59 pm

1 stop28h 41m

$424

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 10/29

8:00 am-5:36 pm

1 stop10h 36m

Helena

Wed 11/5

6:13 pm-7:55 pm

2 stops24h 42m

$431

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sun 12/14

1:51 pm-9:22 pm

1 stop8h 31m

Helena

Wed 12/17

6:30 am-2:55 pm

1 stop7h 25m

$461

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-11:59 pm

2 stops28h 31m

$538

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 9/29

6:30 pm-3:21 pm

1 stop21h 51m

Helena

Fri 10/3

4:02 pm-11:59 pm

1 stop6h 57m

$608

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Mon 9/29

11:10 am-9:00 pm

2 stops10h 50m

Helena

Fri 10/3

6:30 am-12:44 pm

1 stop5h 14m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 24 results
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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, February is the cheapest month in which you can book a flight from Illinois to Helena (average of $353). Flying from Illinois to Helena in May is currently the most expensive (average of $517). 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 30m. Hawaiian Airlines provides one of the quickest options available for as low as $353. The distance between Illinois and Helena is about 1227 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 $392. United Airlines flights start at $441 while deals on Delta start at $825 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, Chicago Midway - Helena or Bloomington-Normal - 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, February is the cheapest month in which you can book a flight from Illinois to Helena (average of $353). Flying from Illinois to Helena in May is currently the most expensive (average of $517). 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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$298Average$694FlexibilityNo cancel feeOn-time69%

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