$244 Find Cheap Flights from Helena to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Illinois departing on 7/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Illinois, as well as popular online travel agencies
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Flights Deals

Best Illinois Flight Deals from Helena

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$314
Moline
Moline1 stop$794
St. Louis
St. Louis1 stop$474
Chicago
Chicago1 stop$314
Moline
Moline1 stop$794
St. Louis
St. Louis1 stop$474

Cheap Flights from Helena to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Illinois

Fri, Aug 29 - Tue, Sep 2
Alaska Airlines Logo
4:02 pm - 7:03 amHLN-ORD
14h 01m1 stop
Alaska Airlines Logo
8:00 am - 3:21 pmORD-HLN
8h 21m1 stop
$314Alaska Airlines
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Fri, Aug 22 - Mon, Aug 25
Alaska Airlines Logo
4:02 pm - 11:59 pmHLN-ORD
6h 57m1 stop
Alaska Airlines Logo
7:00 am - 3:21 pmORD-HLN
33h 21m2 stops
$368Alaska Airlines
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Thu, Aug 21 - Mon, Aug 25
Alaska Airlines Logo
4:02 pm - 11:59 pmHLN-ORD
6h 57m1 stop
Alaska Airlines Logo
7:00 am - 3:21 pmORD-HLN
33h 21m2 stops
$369Alaska Airlines
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Mon, Aug 18 - Sat, Aug 23
Alaska Airlines Logo
4:09 pm - 12:07 pmHLN-ORD
18h 58m1 stop
Alaska Airlines Logo
8:00 am - 3:21 pmORD-HLN
8h 21m1 stop
$372Alaska Airlines
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Mon, Aug 18 - Sat, Aug 23
Hawaiian Airlines Logo
4:09 pm - 11:59 pmHLN-ORD
6h 50m1 stop
Hawaiian Airlines Logo
6:20 am - 3:21 pmORD-HLN
10h 01m1 stop
$377Hawaiian Airlines
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Mon, Aug 18 - Sat, Aug 23
Delta Logo
1:00 pm - 10:04 pmHLN-ORD
8h 04m1 stop
Delta Logo
6:10 am - 12:20 pmORD-HLN
7h 10m2 stops
$383Delta
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Thu, Aug 21 - Mon, Aug 25
Delta Logo
1:00 pm - 10:04 pmHLN-ORD
8h 04m1 stop
Delta Logo
7:45 am - 12:20 pmORD-HLN
5h 35m1 stop
$405Delta
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Wed, Aug 13 - Mon, Aug 18
United Airlines Logo
5:39 pm - 12:30 amHLN-ORD
5h 51m1 stop
United Airlines Logo
7:40 pm - 1:30 pmORD-HLN
18h 50m2 stops
$432United Airlines
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Thu, Aug 7 - Thu, Aug 14
Hawaiian Airlines Logo
4:09 pm - 11:59 pmHLN-ORD
6h 50m1 stop
Hawaiian Airlines Logo
8:00 am - 3:31 pmORD-HLN
8h 31m1 stop
$448Hawaiian Airlines
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Mon, Aug 18 - Thu, Aug 21
United Airlines Logo
2:34 pm - 9:50 pmHLN-STL
6h 16m1 stop
United Airlines Logo
9:00 am - 4:04 pmSTL-HLN
8h 04m1 stop
$474United Airlines
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Useful Info

KAYAK's insights & trends for Helena to Illinois flights

Get data-powered insights and trends into flights from Helena to Illinois to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Helena to Illinois?

The average price of all round-trip flights from Helena to Illinois clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Illinois on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from Helena to Illinois. For your return ticket, we recommend flying on a Thursday and avoiding Fridays for the best deals.


Good to know

Low seasonSeptember
High seasonOctober
Cheapest flight$244
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Helena to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Helena to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helena to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helena to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Helena to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helena to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Helena to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helena to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Helena to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $620 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $708.

Top airlines flying from Helena to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Helena to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helena to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7950 reviews
7.9Entertainment
8.5Crew
7.9Comfort
8.2Boarding
7.3Food
Airline reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

10.0 ExcellentHartaj, Jun 2025EWR - RDU
Read more Delta reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

Everything you need to know for your flight from Helena to Illinois

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