HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$180+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ORD
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 24, 2026.

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.
Mon 4/136:22 pm
HLN
-
ORD
1 stop11h 17m
Alaska Airlines
Tue 4/216:00 am
ORD
-
HLN
1 stop12h 45m
Alaska Airlines
Deal found 3/21$349
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/102:25 pm
HLN
-
ORD
1 stop5h 55m
United Airlines
Mon 4/137:00 am
ORD
-
HLN
1 stop7h 39m
United Airlines
Deal found 3/21$374
This Delta 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 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
Tue 6/97:15 am
ORD
-
HLN
1 stop6h 08m
Delta
Deal found 3/20$379
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:45 am
HLN
-
ORD
2 stops11h 20m
Delta
Tue 5/127:45 am
ORD
-
HLN
1 stop5h 38m
Delta
Deal found 3/21$384
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/32:25 pm
HLN
-
ORD
1 stop7h 29m
United Airlines
Tue 4/77:00 am
ORD
-
HLN
1 stop7h 39m
United Airlines
Deal found 3/19$399
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/101:02 pm
HLN
-
ORD
1 stop7h 32m
Delta
Mon 4/137:35 am
ORD
-
HLN
1 stop5h 49m
Delta
Deal found 3/20$407
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:45 am
HLN
-
ORD
1 stop5h 07m
Delta
Sat 6/63:47 pm
ORD
-
HLN
2 stops7h 46m
Delta
Deal found 3/20$412
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:45 am
HLN
-
MDW
2 stops11h 11m
Delta
Sat 6/61:59 pm
MDW
-
HLN
2 stops9h 34m
Delta
Deal found 3/20$417
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:45 am
HLN
-
STL
1 stop6h 47m
Delta
Tue 6/27:00 am
STL
-
HLN
1 stop6h 23m
Delta
Deal found 3/21$429
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:30 pm
HLN
-
MLI
1 stop5h 33m
United Airlines
Sat 10/318:50 am
MLI
-
HLN
1 stop5h 37m
United Airlines
Deal found 3/22$429
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/182:25 pm
HLN
-
STL
1 stop5h 29m
United Airlines
Wed 4/222:40 pm
STL
-
HLN
1 stop7h 53m
United Airlines
Deal found 3/22$439
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/182:25 pm
HLN
-
ORD
1 stop7h 33m
United Airlines
Wed 4/227:00 am
ORD
-
HLN
1 stop7h 39m
United Airlines
Deal found 3/19$439

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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Alaska Airlines)

One-way from

$180
(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 March 24, 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

Sat 5/23

2:20 pm-9:39 pm

1 stop6h 19m

Chicago O'Hare Intl

Tue 5/26

6:00 am-1:33 pm

1 stop8h 33m

$349

HelenaChicago

HLN - ORD

HLNORD

Helena

Sun 4/26

6:22 pm-6:40 am

1 stop11h 18m

Chicago O'Hare Intl

Thu 4/30

6:00 am-5:45 pm

1 stop12h 45m

$349

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 5/19

2:30 pm-10:58 pm

1 stop7h 28m

Chicago O'Hare Intl

Sat 5/23

2:33 pm-9:20 pm

1 stop7h 47m

$349

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 5/19

1:03 pm-9:50 pm

1 stop7h 47m

Chicago O'Hare Intl

Sat 5/23

1:44 pm-10:33 pm

2 stops9h 49m

$384

HelenaChicago

HLN - ORD

HLNORD

Helena

Tue 8/4

12:55 pm-9:48 pm

1 stop7h 53m

Chicago O'Hare Intl

Fri 8/28

7:30 am-12:23 pm

1 stop5h 53m

$407

HelenaChicago

HLN - MDW

HLNMDW

Helena

Wed 6/3

5:45 am-5:56 pm

2 stops11h 11m

Chicago Midway

Sat 6/6

1:59 pm-10:33 pm

2 stops9h 34m

$417

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Sat 5/2

6:15 am-2:28 pm

1 stop7h 13m

Lambert-St Louis

Tue 5/5

4:06 pm-9:46 pm

1 stop6h 40m

$439

HelenaChicago

HLN - ORD

HLNORD

Helena

Sat 6/6

1:03 pm-9:50 pm

1 stop7h 47m

Chicago O'Hare Intl

Thu 6/11

7:15 am-12:23 pm

1 stop6h 08m

$439

HelenaChicago

HLN - ORD

HLNORD

Helena

Sat 4/18

2:25 pm-9:17 pm

1 stop5h 52m

Chicago O'Hare Intl

Wed 4/22

7:00 am-1:39 pm

1 stop7h 39m

$439

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Sat 4/18

2:25 pm-8:54 pm

1 stop5h 29m

Lambert-St Louis

Wed 4/22

9:10 am-9:33 pm

2 stops13h 23m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 40 resultsSorted by cheapest first
1
2
3
4

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

What is the cheapest month to book a flight from Helena to Illinois?

Currently, October is the cheapest month in which you can book a flight from Helena to Illinois (average of $169). Flying from Helena to Illinois in November is currently the most expensive (average of $298). 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 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 March 24, 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
9,469 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

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
9,469 reviews
United Airlines
7.4
Good
9,469 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

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 United Airlines, Alaska Airlines, and Delta fly from Helena to Illinois in about 6h 19m. The time it takes to get you to your destination can typically vary by up to 4h 59m. 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 - Chicago Midway. You may also consider Helena - Chicago O'Hare Intl 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, October is the cheapest month in which you can book a flight from Helena to Illinois (average of $169). Flying from Helena to Illinois in November is currently the most expensive (average of $298). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights