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$193+ Cheap flights from Helena (HLN) to Illinois

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheap flight deals from Helena to Illinois

Keep the following information in mind while searching for Helena to Illinois flight deals. Data was last updated April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$335
(Alaska Airlines)

One-way from

$193
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$415
Provider with most accurate pricing for Helena-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Helena-Chicago (CHI) flights.
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From Helena to Illinois
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One-way flight from Helena to Illinois
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Highest demand for flights based on searches. 19% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Helena to Illinois

Cheapest flights from Helena to Illinois
Explore the most affordable flight options available from Helena to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/214:11 pmHLN - ORD
1 stop6h 48mAlaska Airlines
Wed 5/288:00 amORD - HLN
1 stop8h 31mAlaska Airlines
Deal found 4/16$335
This Delta deal was found by Cheapflights users on 4/16. 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 5/215:45 amHLN - ORD
1 stop5h 58mDelta
Wed 5/281:45 pmORD - HLN
2 stops9h 31mDelta
Deal found 4/16$352
This United Airlines deal was found by Cheapflights users on 4/16. 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.
Thu 8/76:45 amHLN - ORD
1 stop16h 45mUnited Airlines
Mon 8/115:00 amORD - HLN
1 stop17h 15mUnited Airlines
Deal found 4/16$502
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/27:29 pmHLN - ORD
1 stop9h 36mHawaiian Airlines
Tue 5/612:00 pmORD - HLN
1 stop7h 49mHawaiian Airlines
Deal found 4/16$516
This Delta deal was found by Cheapflights users on 4/16. 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 6/181:18 pmHLN - STL
2 stops9h 04mDelta
Tue 6/249:28 amSTL - HLN
2 stops13h 47mDelta
Deal found 4/16$558
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 6/185:39 pmHLN - STL
1 stop26h 09mUnited Airlines
Tue 6/241:42 pmSTL - HLN
1 stop8h 33mUnited Airlines
Deal found 4/17$564
This Delta deal was found by Cheapflights users on 4/16. 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.
Thu 8/75:45 amHLN - MDW
2 stops11h 18mDelta
Mon 8/111:00 pmMDW - HLN
2 stops10h 33mDelta
Deal found 4/16$593
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/27:29 pmHLN - STL
2 stops12h 53mAlaska Airlines
Tue 5/67:00 amSTL - HLN
2 stops12h 49mAlaska Airlines
Deal found 4/17$657
This United deal was found by Cheapflights users on 4/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:00 amHLN - ORD
2 stops9h 08mMultiple Airlines
Mon 9/87:00 amORD - HLN
2 stops9h 34mMultiple Airlines
Deal found 4/16$1,049

Cheapflights Fare Finder

Customize your flight search to find flights from Helena to Illinois 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 April 17, 2025.
Use the filters below to find and compare flights from Helena to Illinois that are best for you.

Fly from

Helena

Fly to

Illinois

Route

Depart

Return

Price

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 5/21

4:11 pm-11:59 pm

1 stop6h 48m

Chicago O'Hare Intl

Wed 5/28

8:00 am-3:31 pm

1 stop8h 31m

$335

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 5/21

5:45 am-12:43 pm

1 stop5h 58m

Chicago O'Hare Intl

Wed 5/28

1:45 pm-10:16 pm

2 stops9h 31m

$352

HelenaChicago

HLN - ORD

HLNORD

Helena

Thu 8/7

6:45 am-12:30 am

1 stop16h 45m

Chicago O'Hare Intl

Mon 8/11

5:00 am-9:15 pm

1 stop17h 15m

$502

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 5/2

7:29 pm-6:05 am

1 stop9h 36m

Chicago O'Hare Intl

Tue 5/6

12:00 pm-6:49 pm

1 stop7h 49m

$516

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Wed 6/18

1:18 pm-11:22 pm

2 stops9h 04m

Lambert-St Louis

Tue 6/24

9:28 am-10:15 pm

2 stops13h 47m

$558

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Wed 6/18

5:39 pm-8:48 pm

1 stop26h 09m

Lambert-St Louis

Tue 6/24

1:42 pm-9:15 pm

1 stop8h 33m

$564

HelenaChicago

HLN - MDW

HLNMDW

Helena

Thu 8/7

5:45 am-6:03 pm

2 stops11h 18m

Chicago Midway

Mon 8/11

1:00 pm-10:33 pm

2 stops10h 33m

$593

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Fri 5/2

7:29 pm-9:22 am

2 stops12h 53m

Lambert-St Louis

Tue 5/6

7:00 am-6:49 pm

2 stops12h 49m

$657

HelenaChicago

HLN - ORD

HLNORD

Helena

Thu 9/4

7:00 am-5:08 pm

2 stops9h 08m

Chicago O'Hare Intl

Mon 9/8

7:00 am-3:34 pm

2 stops9h 34m

$1,049

HelenaChicago

HLN - ORD

HLNORD

Helena

Mon 5/12

7:29 pm-11:59 pm

1 stop27h 30m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 15 results
1
2

Best time to book a flight from Helena to Illinois

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

Cheapflights Insights

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

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

Currently, August is the cheapest month in which you can book a flight from Helena to Illinois (average of $245). Flying from Helena to Illinois in March is currently the most expensive (average of $321). 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.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 17, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Helena to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,887 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,380 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Helena to Illinois. 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 from for flights from Helena to Illinois?

    Helena (HLN), located 2.7 mi from the city center, is the airport you fly out of when you book flights from Helena to Illinois.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $193. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Helena to Illinois for a low price.

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

    The most popular route from Helena to Illinois is Helena - Chicago O'Hare Intl. You may also consider Helena - Chicago Midway or Helena - Lambert-St Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Helena to Illinois 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 Helena to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Helena to Illinois (average of $245). Flying from Helena to Illinois in March is currently the most expensive (average of $321). 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 2 airlines flying from Helena to Illinois

Discover the top 2 airlines that operate flights from Helena to Illinois. 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$314Average$524FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$404Average$768FlexibilityNo cancel feeOn-time69%

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