$177 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 11/1. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Helena to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$380
Moline
Moline1 stop$409
St. Louis
St. Louis1 stop$382
Chicago
Chicago1 stop$380
Moline
Moline1 stop$409
St. Louis
St. Louis1 stop$382

Book Cheap Helena to Illinois Plane Tickets

 
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

Tue, Oct 21 - Thu, Oct 23
Alaska Airlines Logo
6:18 pm - 6:24 amHLN-ORD
11h 06m1 stop
Alaska Airlines Logo
8:00 am - 5:41 pmORD-HLN
10h 41m1 stop
$380Alaska Airlines
Find Deal
Sat, Feb 28 - Tue, Mar 3
Hawaiian Airlines Logo
4:10 pm - 11:56 pmHLN-STL
6h 46m1 stop
Hawaiian Airlines Logo
7:00 am - 3:43 pmSTL-HLN
9h 43m1 stop
$382Hawaiian Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Alaska Airlines Logo
6:18 pm - 12:03 amHLN-STL
28h 45m1 stop
Alaska Airlines Logo
6:33 am - 5:41 pmSTL-HLN
12h 08m1 stop
$405Alaska Airlines
Find Deal
Tue, Feb 3 - Sat, Feb 7
United Airlines Logo
2:27 pm - 9:16 pmHLN-MLI
5h 49m1 stop
United Airlines Logo
10:47 am - 9:26 pmMLI-HLN
11h 39m2 stops
$409United Airlines
Find Deal
Tue, Oct 14 - Sat, Oct 18
Alaska Airlines Logo
6:18 pm - 6:24 amHLN-ORD
11h 06m1 stop
Alaska Airlines Logo
8:00 am - 5:41 pmORD-HLN
10h 41m1 stop
$415Alaska Airlines
Find Deal
Tue, Oct 21 - Thu, Oct 23
Alaska Airlines Logo
6:18 pm - 2:50 pmHLN-ORD
19h 32m2 stops
Alaska Airlines Logo
6:00 am - 5:41 pmORD-HLN
12h 41m1 stop
$421Alaska Airlines
Find Deal
Wed, Oct 15 - Sat, Oct 18
United Airlines Logo
5:18 pm - 11:59 pmHLN-ORD
5h 41m1 stop
United Airlines Logo
10:53 am - 4:40 pmORD-HLN
6h 47m1 stop
$433United Airlines
Find Deal
Sat, Feb 28 - Tue, Mar 3
Hawaiian Airlines Logo
4:10 pm - 11:56 pmHLN-STL
6h 46m1 stop
Hawaiian Airlines Logo
7:00 am - 3:43 pmSTL-HLN
9h 43m1 stop
$433Hawaiian Airlines
Find Deal
Sat, Nov 22 - Fri, Nov 28
Delta Logo
1:06 pm - 9:25 pmHLN-ORD
7h 19m1 stop
Delta Logo
7:33 am - 12:26 pmORD-HLN
5h 53m1 stop
$473Delta
Find Deal
Fri, Oct 17 - Tue, Oct 21
Delta Logo
1:00 pm - 10:20 amHLN-ORD
20h 20m2 stops
Delta Logo
7:50 am - 12:20 pmORD-HLN
5h 30m1 stop
$494Delta
Find Deal
Booking Insights

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
Cheapest flight$177
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 18% 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.

Reviews of the 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.
7.9
DeltaOverall score based on 7954 reviews
8.5Crew
8.2Boarding
7.9Comfort
7.3Food
7.9Entertainment
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

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.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.