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$335+ Cheap flights from Helena (HLN) to Illinois

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ORD
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(Delta)

Popular in

December

Cheapest in

February

Average price

$306
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
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This Delta deal was found by Cheapflights users on 2/21. 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 4/35:45 amHLN - ORD
1 stop5h 53mDelta
Tue 4/87:45 amORD - HLN
1 stop5h 50mDelta
Deal found 2/21$335
This Hawaiian Airlines deal was found by Cheapflights users on 2/21. 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 4/84:19 pmHLN - ORD
1 stop6h 40mHawaiian Airlines
Fri 4/117:00 amORD - HLN
1 stop9h 39mHawaiian Airlines
Deal found 2/21$364
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 4/84:19 pmHLN - ORD
2 stops24h 57mAlaska Airlines
Thu 4/107:16 pmORD - HLN
1 stop21h 23mAlaska Airlines
Deal found 2/21$368
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 4/82:12 pmHLN - ORD
1 stop6h 08mUnited Airlines
Thu 4/107:10 amORD - HLN
1 stop7h 20mUnited Airlines
Deal found 2/21$532
This Delta deal was found by Cheapflights users on 2/21. 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 4/35:45 amHLN - MDW
2 stops11h 17mDelta
Tue 4/82:57 pmMDW - HLN
2 stops8h 43mDelta
Deal found 2/21$699

Find flights from Helena to Illinois within your budget

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 February 22, 2025.

Fly from

Helena

Fly to

Illinois

Route

Depart

Return

Price

HelenaChicago

HLN - ORD

HLNORD

Helena

Thu 4/3

5:45 am-12:38 pm

1 stop5h 53m

Chicago O'Hare Intl

Tue 4/8

7:45 am-12:35 pm

1 stop5h 50m

$335

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 4/8

4:19 pm-11:59 pm

1 stop6h 40m

Chicago O'Hare Intl

Fri 4/11

7:00 am-3:39 pm

1 stop9h 39m

$364

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 4/8

4:19 pm-6:16 pm

2 stops24h 57m

Chicago O'Hare Intl

Thu 4/10

7:16 pm-3:39 pm

1 stop21h 23m

$368

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 4/8

2:12 pm-9:20 pm

1 stop6h 08m

Chicago O'Hare Intl

Thu 4/10

7:10 am-1:30 pm

1 stop7h 20m

$532

HelenaChicago

HLN - MDW

HLNMDW

Helena

Thu 4/3

5:45 am-6:02 pm

2 stops11h 17m

Chicago Midway

Tue 4/8

2:57 pm-10:40 pm

2 stops8h 43m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

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.

Travel insights for flights from Helena to Illinois

Get recent, data-driven insights about flights from Helena to Illinois including ideal travel times, pricing trends, and more.

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 February 22, 2025.
Alaska Airlines
8.0
Very good
9,700 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,700 reviews
Alaska Airlines
8.0
Very good
9,700 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,212 reviews
Alaska Airlines
8.0
Very good
9,700 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines
7.9
Good
2,314 reviews
Alaska Airlines
8.0
Very good
9,700 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,759 reviews
Alaska Airlines
8.0
Very good
9,700 reviews

Entertainment

7.1

Boarding

8.2

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 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.

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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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$314Average$524FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$404Average$768FlexibilityNo cancel feeOn-time69%
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