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Helena

$209+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/317:10 amORD - HLN
1 stop7h 35mUnited Airlines
Sun 1/46:10 amHLN - ORD
1 stop26h 34mUnited Airlines
Deal found 12/16$637
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/298:00 pmORD - HLN
2 stops18h 45mUnited Airlines
Wed 12/312:26 pmHLN - ORD
2 stops16h 35mUnited Airlines
Deal found 12/17$743
This Delta deal was found by Cheapflights users on 12/16. 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 12/319:50 amMDW - HLN
2 stops13h 40mDelta
Sun 1/45:30 amHLN - MDW
2 stops10h 49mDelta
Deal found 12/16$1,559

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 December 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$342
(Alaska Airlines)

One-way from

$209
(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
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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 December 18, 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

Mon 1/19

7:30 am-12:27 pm

2 stops29h 57m

Helena

Tue 1/27

5:30 am-1:38 pm

1 stop7h 08m

$338

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Mon 1/19

7:30 am-12:27 pm

2 stops29h 57m

Helena

Sat 1/24

1:10 pm-9:52 pm

1 stop7h 42m

$338

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 1/17

5:20 pm-10:29 pm

1 stop6h 09m

Helena

Tue 1/27

5:30 am-11:53 pm

2 stops17h 23m

$338

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Mon 3/2

2:02 pm-9:16 pm

1 stop8h 14m

Helena

Sat 3/7

2:30 pm-9:29 pm

1 stop5h 59m

$343

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 1/23

7:30 am-12:27 pm

2 stops29h 57m

Helena

Tue 1/27

5:30 am-4:57 pm

2 stops10h 27m

$343

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 1/21

7:30 am-10:29 pm

2 stops15h 59m

Helena

Sat 1/24

1:10 pm-1:22 pm

2 stops23h 12m

$344

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 2/14

7:00 am-3:59 pm

1 stop9h 59m

Helena

Wed 2/18

4:36 pm-4:33 pm

1 stop22h 57m

$347

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 1/17

5:20 pm-10:29 pm

1 stop6h 09m

Helena

Thu 1/22

1:10 pm-1:22 pm

2 stops23h 12m

$348

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 1/17

5:20 pm-10:29 pm

1 stop6h 09m

Helena

Sun 1/25

5:30 am-11:53 pm

2 stops17h 23m

$348

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 1/17

7:30 am-12:27 pm

2 stops29h 57m

Helena

Wed 1/21

1:10 pm-11:56 pm

2 stops9h 46m

$353

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 42 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, October is the cheapest month in which you can book a flight from Illinois to Helena (average of $190). Flying from Illinois to Helena in March is currently the most expensive (average of $290). 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 8h 14m. Delta provides one of the quickest options available for as low as $343. 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 most popular routes from Illinois to Helena?

    When deciding which route to take from Illinois to Helena consider Chicago O'Hare Intl - Helena, Greater Peoria - Helena or Lambert-St Louis - 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, October is the cheapest month in which you can book a flight from Illinois to Helena (average of $190). Flying from Illinois to Helena in March is currently the most expensive (average of $290). 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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