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Illinois

$302+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ORD
ago. 4 — ago. 111
mar. 8/4
mar. 8/11
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 julio 5, 2026.

This Delta deal was found by Cheapflights users on 6/30. 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.
jue. 8/1312:55 pm
HLN
-
STL
1 stop5h 00m
Delta
dom. 8/168:00 am
STL
-
HLN
1 stop5h 15m
Delta
Deal found 6/30$329
This United Airlines deal was found by Cheapflights users on 6/30. 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.
mié. 11/42:34 pm
HLN
-
ORD
1 stop8h 23m
United Airlines
lun. 11/94:20 pm
ORD
-
HLN
1 stop6h 19m
United Airlines
Deal found 6/30$329
This Delta deal was found by Cheapflights users on 6/30. 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.
mar. 11/1012:50 pm
HLN
-
STL
2 stops9h 49m
Delta
dom. 11/157:30 am
STL
-
HLN
1 stop5h 54m
Delta
Deal found 6/30$334
This Delta deal was found by Cheapflights users on 6/30. 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.
mié. 11/41:03 pm
HLN
-
ORD
1 stop7h 57m
Delta
lun. 11/911:30 am
ORD
-
HLN
2 stops12h 11m
Delta
Deal found 6/30$334
This United Airlines deal was found by Cheapflights users on 6/30. 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. 9/182:35 pm
HLN
-
STL
1 stop5h 03m
United Airlines
lun. 9/284:39 pm
STL
-
HLN
1 stop5h 39m
United Airlines
Deal found 6/30$357
This United Airlines deal was found by Cheapflights users on 7/1. 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.
jue. 8/132:35 pm
HLN
-
STL
1 stop7h 56m
United Airlines
dom. 8/164:40 pm
STL
-
HLN
1 stop5h 50m
United Airlines
Deal found 7/1$362
This Travelocity deal was found by Cheapflights users on 7/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/134:41 pm
HLN
-
ORD
1 stop11h 59m
Alaska Airlines
dom. 11/159:31 am
ORD
-
HLN
1 stop7h 33m
Alaska Airlines
Deal found 7/2$364
This Delta deal was found by Cheapflights users on 7/2. 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.
vie. 11/135:45 am
HLN
-
ORD
1 stop5h 40m
Delta
dom. 11/153:50 pm
ORD
-
HLN
2 stops7h 51m
Delta
Deal found 7/2$369
This Delta deal was found by Cheapflights users on 7/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/1412:55 pm
HLN
-
ORD
1 stop7h 38m
Delta
lun. 8/247:48 am
ORD
-
HLN
1 stop5h 27m
Delta
Deal found 7/4$394
This Delta deal was found by Cheapflights users on 6/30. 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.
mié. 7/295:40 am
HLN
-
ORD
1 stop5h 20m
Delta
mar. 8/411:22 am
ORD
-
HLN
2 stops12h 08m
Delta
Deal found 6/30$404
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/266:15 am
HLN
-
STL
1 stop5h 25m
United Airlines
sáb. 8/294:40 pm
STL
-
HLN
1 stop5h 50m
United Airlines
Deal found 7/4$419
This United Airlines deal was found by Cheapflights users on 7/3. 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.
mar. 7/142:20 pm
HLN
-
ORD
1 stop6h 19m
United Airlines
sáb. 7/186:00 am
ORD
-
HLN
1 stop8h 33m
United Airlines
Deal found 7/3$434

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 julio 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$302
(Alaska Airlines)
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 julio 5, 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

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

mar. 11/10

12:50 pm-6:56 pm

1 stop5h 06m

Lambert-St Louis

dom. 11/15

7:30 am-12:24 pm

1 stop5h 54m

$329

HelenaChicago

HLN - ORD

HLNORD

Helena

mié. 11/4

2:34 pm-11:57 pm

1 stop8h 23m

Chicago O'Hare Intl

lun. 11/9

4:20 pm-9:39 pm

1 stop6h 19m

$329

HelenaChicago

HLN - ORD

HLNORD

Helena

mié. 11/4

1:03 pm-10:00 pm

1 stop7h 57m

Chicago O'Hare Intl

lun. 11/9

11:30 am-10:41 pm

2 stops12h 11m

$334

HelenaChicago

HLN - ORD

HLNORD

Helena

vie. 11/13

5:45 am-12:25 pm

1 stop5h 40m

Chicago O'Hare Intl

dom. 11/15

3:50 pm-10:41 pm

2 stops7h 51m

$369

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

mié. 8/26

6:15 am-12:40 pm

1 stop5h 25m

Lambert-St Louis

sáb. 8/29

8:40 am-9:30 pm

2 stops13h 50m

$424

HelenaChicago

HLN - ORD

HLNORD

Helena

jue. 7/23

5:40 am-12:00 pm

1 stop5h 20m

Chicago O'Hare Intl

mar. 7/28

7:45 am-12:15 pm

1 stop5h 30m

$434

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

mar. 11/10

4:41 pm-10:51 am

2 stops17h 10m

Lambert-St Louis

vie. 11/13

2:29 pm-4:04 pm

2 stops26h 35m

$439

HelenaChicago

HLN - ORD

HLNORD

Helena

lun. 8/24

5:11 pm-6:20 am

1 stop12h 09m

Chicago O'Hare Intl

mié. 8/26

3:43 pm-4:34 pm

1 stop25h 51m

$469

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

mar. 11/10

6:15 am-3:41 pm

2 stops8h 26m

Lambert-St Louis

dom. 11/15

6:00 am-1:49 pm

2 stops8h 49m

$478
Quickest round-trip

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

mar. 9/29

2:30 pm-8:36 pm

1 stop5h 06m

Lambert-St Louis

sáb. 10/3

4:49 pm-9:18 pm

1 stop5h 29m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 28 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 julio 5, 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
9,933 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
9,933 reviews
United Airlines
7.4
Good
9,933 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 5h. The time it takes to get you to your destination can typically vary by up to 12h 10m. There are 1218 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 - 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.

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