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Helena

$175+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HLN
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/19. 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 10/276:41 am
STL
-
HLN
1 stop9h 50m
Alaska Airlines
Sat 10/314:08 pm
HLN
-
STL
1 stop6h 51m
Alaska Airlines
Deal found 3/19$349
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Sat 4/182:30 pm
ORD
-
HLN
1 stop8h 03m
United Airlines
Tue 4/212:25 pm
HLN
-
ORD
1 stop5h 55m
United Airlines
Deal found 3/20$349
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Fri 4/177:00 am
ORD
-
HLN
1 stop7h 39m
United Airlines
Tue 4/212:25 pm
HLN
-
ORD
1 stop5h 55m
United Airlines
Deal found 3/20$373
This Alaska Airlines deal was found by Cheapflights users on 3/21. 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 9/296:41 am
STL
-
HLN
1 stop9h 50m
Alaska Airlines
Wed 10/74:08 pm
HLN
-
STL
1 stop6h 51m
Alaska Airlines
Deal found 3/21$374
This Delta deal was found by Cheapflights users on 3/23. 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 6/27:45 am
ORD
-
HLN
1 stop5h 38m
Delta
Wed 6/175:25 am
HLN
-
ORD
1 stop5h 35m
Delta
Deal found 3/23$379
This Delta deal was found by Cheapflights users on 3/23. 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 6/311:09 am
ORD
-
HLN
2 stops12h 24m
Delta
Mon 6/151:00 pm
HLN
-
ORD
1 stop7h 57m
Delta
Deal found 3/23$384
This Delta deal was found by Cheapflights users on 3/23. 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.
Sat 4/181:29 pm
ORD
-
HLN
2 stops10h 01m
Delta
Tue 4/215:40 am
HLN
-
ORD
2 stops12h 12m
Delta
Deal found 3/23$389
This Delta deal was found by Cheapflights users on 3/23. 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.
Sat 4/181:24 pm
MDW
-
HLN
2 stops10h 06m
Delta
Tue 4/215:40 am
HLN
-
MDW
2 stops11h 18m
Delta
Deal found 3/23$389
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 4/235:52 pm
ORD
-
HLN
1 stop24h 53m
Alaska Airlines
Mon 4/276:22 pm
HLN
-
ORD
1 stop11h 18m
Alaska Airlines
Deal found 3/20$394
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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 8/198:00 am
ORD
-
HLN
1 stop8h 31m
Alaska Airlines
Sat 8/224:08 pm
HLN
-
ORD
1 stop6h 51m
Alaska Airlines
Deal found 3/22$399
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 8/155:00 pm
ORD
-
HLN
1 stop6h 34m
Delta
Thu 8/205:45 am
HLN
-
ORD
1 stop5h 36m
Delta
Deal found 3/22$407
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 8/157:30 am
ORD
-
HLN
1 stop5h 53m
Delta
Wed 8/195:45 am
HLN
-
ORD
2 stops8h 13m
Delta
Deal found 3/22$412

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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(United Airlines)

One-way from

$175
(United 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
Search Deals

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 March 24, 2026.
Use the filters below to find and compare flights from Illinois to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 4/18

2:30 pm-9:33 pm

1 stop8h 03m

Helena

Tue 4/21

2:25 pm-9:20 pm

1 stop5h 55m

$349

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 4/18

6:00 am-5:45 pm

1 stop12h 45m

Helena

Tue 4/21

6:22 pm-6:40 am

1 stop11h 18m

$349

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 4/18

1:29 pm-10:30 pm

2 stops10h 01m

Helena

Tue 4/21

5:40 am-11:51 am

1 stop5h 11m

$384

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

Sat 4/18

1:24 pm-10:30 pm

2 stops10h 06m

Helena

Tue 4/21

5:40 am-5:58 pm

2 stops11h 18m

$389

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Thu 4/23

5:52 pm-5:45 pm

1 stop24h 53m

Helena

Mon 4/27

6:22 pm-6:40 am

1 stop11h 18m

$394

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 4/8

8:00 am-5:45 pm

1 stop10h 45m

Helena

Sun 4/12

6:22 pm-6:39 am

1 stop11h 17m

$399

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Wed 5/6

6:00 am-5:45 pm

1 stop12h 45m

Helena

Fri 5/8

6:22 pm-6:40 am

1 stop11h 18m

$399

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Thu 6/11

7:15 am-12:23 pm

1 stop6h 08m

Helena

Tue 6/16

12:50 pm-9:58 pm

1 stop8h 08m

$439

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 8/14

7:30 am-12:23 pm

1 stop5h 53m

Helena

Thu 8/20

5:45 am-2:58 pm

2 stops8h 13m

$444

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Mon 4/20

7:00 am-1:39 pm

1 stop7h 39m

Helena

Mon 4/27

2:25 pm-10:54 pm

1 stop7h 29m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 38 resultsSorted by cheapest first
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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 December is currently the most expensive (average of $281). 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 03m. United Airlines provides one of the quickest options available for as low as $349. 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, 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, 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 December is currently the most expensive (average of $281). 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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