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Helena

$229+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$396
(Alaska Airlines)

One-way from

$288
(Alaska Airlines)
From Illinois to Helena
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One-way flight from Illinois to Helena
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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 julio 30, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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.
dom. 12/147:15 amORD - HLN
1 stop6h 09mDelta
mié. 12/175:40 amHLN - ORD
1 stop5h 44mDelta
Deal found 7/30$449
This United Airlines deal was found by Cheapflights users on 7/29. 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.
dom. 12/147:10 amORD - HLN
1 stop7h 37mUnited Airlines
mié. 12/172:30 pmHLN - ORD
1 stop8h 29mUnited Airlines
Deal found 7/29$463
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 9/45:45 pmORD - HLN
1 stop22h 36mAlaska Airlines
lun. 9/84:02 pmHLN - ORD
1 stop14h 01mAlaska Airlines
Deal found 7/30$470
This Delta deal was found by Cheapflights users on 7/29. 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.
mar. 11/257:30 amSTL - HLN
1 stop5h 54mDelta
mar. 12/25:40 amHLN - STL
1 stop6h 43mDelta
Deal found 7/29$517
This United Airlines deal was found by Cheapflights users on 7/30. 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.
vie. 8/155:25 pmPIA - HLN
2 stops28h 50mUnited Airlines
mar. 8/192:30 pmHLN - PIA
1 stop5h 42mUnited Airlines
Deal found 7/30$785
This Delta deal was found by Cheapflights users on 7/27. 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.
mar. 8/121:43 pmMDW - HLN
2 stops9h 30mDelta
sáb. 8/165:50 amHLN - MDW
2 stops10h 47mDelta
Deal found 7/27$868
This United Airlines deal was found by Cheapflights users on 7/28. 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.
lun. 8/45:15 amSTL - HLN
1 stop9h 43mUnited Airlines
dom. 8/105:39 pmHLN - STL
1 stop27h 11mUnited Airlines
Deal found 7/28$895

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 julio 30, 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

dom. 12/14

7:15 am-12:24 pm

1 stop6h 09m

Helena

mié. 12/17

5:40 am-12:24 pm

1 stop5h 44m

$449

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

dom. 12/14

7:10 am-1:47 pm

1 stop7h 37m

Helena

mié. 12/17

2:30 pm-11:59 pm

1 stop8h 29m

$463

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

jue. 9/4

5:45 pm-3:21 pm

1 stop22h 36m

Helena

lun. 9/8

4:02 pm-7:03 am

1 stop14h 01m

$470

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

mar. 11/25

7:30 am-12:24 pm

1 stop5h 54m

Helena

mar. 12/2

5:40 am-1:23 pm

1 stop6h 43m

$517

PeoriaHelena

PIA - HLN

PIAHLN

Greater Peoria

vie. 8/15

5:25 pm-9:15 pm

2 stops28h 50m

Helena

mar. 8/19

2:30 pm-9:12 pm

1 stop5h 42m

$785

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

mar. 8/12

1:43 pm-10:13 pm

2 stops9h 30m

Helena

sáb. 8/16

5:50 am-5:37 pm

2 stops10h 47m

$868

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

lun. 10/6

7:59 pm-5:41 pm

2 stops22h 42m

$229

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

mié. 8/13

8:00 am-3:31 pm

1 stop8h 31m

$352

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

mié. 8/13

7:45 am-12:20 pm

1 stop5h 35m

$359

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

mar. 8/12

1:43 pm-10:13 pm

2 stops9h 30m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 12 results
1
2

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.

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated julio 30, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Illinois to Helena have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • 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 $288. Hawaiian Airlines flights start at $352 while deals on Delta start at $359 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, Lambert-St Louis - Helena or Chicago Midway - 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$426Average$668FlexibilityNo cancel feeOn-time69%

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