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$170+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ORD
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
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Cheap 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 May 8, 2026.

This Delta deal was found by Cheapflights users on 5/3. 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 6/21:03 pm
HLN
-
ORD
1 stop7h 47m
Delta
Tue 6/97:45 am
ORD
-
HLN
1 stop5h 35m
Delta
Deal found 5/3$329
This Delta deal was found by Cheapflights users on 5/3. 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 10/2112:50 pm
HLN
-
ORD
1 stop8h 03m
Delta
Sat 10/2411:30 am
ORD
-
HLN
2 stops12h 11m
Delta
Deal found 5/3$334
This Alaska Airlines deal was found by Cheapflights users on 5/7. 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.
Sat 12/54:08 pm
HLN
-
ORD
1 stop6h 51m
Alaska Airlines
Wed 12/98:00 am
ORD
-
HLN
1 stop8h 31m
Alaska Airlines
Deal found 5/7$339
This Delta deal was found by Cheapflights users on 5/6. 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 6/25:45 am
HLN
-
ORD
1 stop5h 07m
Delta
Thu 7/27:45 am
ORD
-
HLN
1 stop5h 35m
Delta
Deal found 5/6$354
This United Airlines deal was found by Cheapflights users on 5/3. 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 7/32:20 pm
HLN
-
ORD
1 stop7h 29m
United Airlines
Tue 7/76:00 am
ORD
-
HLN
1 stop8h 33m
United Airlines
Deal found 5/3$387
This United Airlines deal was found by Cheapflights users on 5/7. 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 6/62:20 pm
HLN
-
ORD
1 stop7h 29m
United Airlines
Sat 6/137:05 am
ORD
-
HLN
1 stop7h 28m
United Airlines
Deal found 5/7$389
This Delta deal was found by Cheapflights users on 5/3. 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 7/41:00 pm
HLN
-
ORD
1 stop7h 23m
Delta
Wed 7/87:45 am
ORD
-
HLN
1 stop5h 30m
Delta
Deal found 5/3$394
This Delta deal was found by Cheapflights users on 5/3. 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 7/295:40 am
HLN
-
MDW
2 stops11h 45m
Delta
Tue 8/41:27 pm
MDW
-
HLN
2 stops10h 03m
Delta
Deal found 5/3$404
This United Airlines deal was found by Cheapflights users on 5/3. 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 8/252:29 pm
HLN
-
STL
1 stop5h 10m
United Airlines
Sat 8/294:40 pm
STL
-
HLN
1 stop5h 36m
United Airlines
Deal found 5/3$419
This deal was found by Cheapflights users on 5/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:30 pm
HLN
-
ORD
1 stop7h 14m
United Airlines
Sat 10/318:55 am
ORD
-
HLN
1 stop5h 32m
United Airlines
Deal found 5/4$419
This Delta deal was found by Cheapflights users on 5/3. 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 5/281:03 pm
HLN
-
STL
2 stops9h 56m
Delta
Sun 5/311:59 pm
STL
-
HLN
2 stops9h 34m
Delta
Deal found 5/3$454
This Expedia deal was found by Cheapflights users on 5/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:43 pm
HLN
-
STL
2 stops15h 07m
Alaska Airlines
Sun 6/77:41 pm
STL
-
HLN
1 stop21h 25m
Alaska Airlines
Deal found 5/7$495

Find flight deals from Helena to Illinois

Keep the following information in mind while searching for Helena to Illinois flight deals. Data was last updated May 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$170
(Expedia)
Provider with most accurate pricing for Helena-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Chicago (CHI) flights.
Search Deals
From Helena to Illinois
Search Deals
One-way flight from Helena to Illinois
Search Deals

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 May 8, 2026.
Use the filters below to find and compare flights from Helena to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 6/2

1:03 pm-9:50 pm

1 stop7h 47m

Chicago O'Hare Intl

Tue 6/9

7:45 am-12:20 pm

1 stop5h 35m

$329

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 7/29

5:40 am-4:23 pm

2 stops9h 43m

Chicago O'Hare Intl

Tue 8/4

2:12 pm-10:30 pm

2 stops9h 18m

$364
Quickest round-trip

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 6/2

5:45 am-11:52 am

1 stop5h 07m

Chicago O'Hare Intl

Thu 7/2

7:45 am-12:20 pm

1 stop5h 35m

$364

HelenaChicago

HLN - ORD

HLNORD

Helena

Fri 7/3

2:20 pm-10:49 pm

1 stop7h 29m

Chicago O'Hare Intl

Tue 7/7

6:00 am-1:33 pm

1 stop8h 33m

$387

HelenaChicago

HLN - ORD

HLNORD

Helena

Sat 6/6

2:20 pm-10:49 pm

1 stop7h 29m

Chicago O'Hare Intl

Sat 6/13

7:05 am-1:33 pm

1 stop7h 28m

$389

HelenaChicago

HLN - MDW

HLNMDW

Helena

Wed 7/29

5:40 am-6:25 pm

2 stops11h 45m

Chicago Midway

Tue 8/4

1:27 pm-10:30 pm

2 stops10h 03m

$404

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Tue 8/25

2:29 pm-8:39 pm

1 stop5h 10m

Lambert-St Louis

Sat 8/29

4:40 pm-9:16 pm

1 stop5h 36m

$419

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 9/2

2:29 pm-11:59 pm

1 stop8h 30m

Chicago O'Hare Intl

Sat 9/5

6:00 am-1:32 pm

1 stop8h 32m

$479

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Thu 6/4

4:43 pm-8:50 am

2 stops15h 07m

Lambert-St Louis

Sun 6/7

7:41 pm-4:06 pm

1 stop21h 25m

$495

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 5/20

1:03 pm-11:59 pm

2 stops9h 56m

Chicago O'Hare Intl

Sun 5/24

11:09 am-10:33 pm

2 stops12h 24m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 42 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 May 8, 2026.
Read reviews from past customers who have flown United Airlines from Helena to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,694 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,694 reviews
United Airlines
7.4
Good
9,694 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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.

  • How long is the flight from Helena to Illinois?

    Airlines like Delta, United Airlines, and Alaska Airlines fly from Helena to Illinois in about 7h 29m. The time it takes to get you to your destination can typically vary by up to 7h 38m. There are 1227 mi between Helena and Illinois. This flight may include one or multiple stops.

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

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

  • 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.

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