$157 Find Cheap Flights from Billings 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 Billings to Illinois departing on 5/10. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Billings 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 Billings to Illinois, as well as popular online travel agencies
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Best Illinois Flight Deals from Billings

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicagononstop$229
St. Louis
St. Louis1 stop$313

Cheap Flight Deals from Billings to Illinois (BIL-USIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billings 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.

Recent round-trip flight deals from Billings to Illinois

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Billings to Illinois.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:15 am - 9:57 amBIL-ORD
2h 42mnonstop
8:20 pm - 10:42 pmORD-BIL
3h 22mnonstop
$229American Airlines
Find Deal
Fri, Aug 22 - Sat, Aug 30
6:21 am - 2:22 pmBIL-MDW
7h 01m1 stop
7:00 pm - 11:12 pmMDW-BIL
5h 12m1 stop
$249Delta
Find Deal
Sat, Apr 19 - Sat, Apr 26
5:20 am - 1:51 pmBIL-ORD
7h 31m1 stop
6:59 pm - 11:12 pmORD-BIL
5h 13m1 stop
$249Delta
Find Deal
Sat, Apr 19 - Sat, Apr 26
11:35 am - 10:22 pmBIL-MDW
9h 47m2 stops
7:00 pm - 11:12 pmMDW-BIL
5h 12m1 stop
$254Delta
Find Deal
Sat, Apr 19 - Sat, Apr 26
6:15 am - 9:57 amBIL-ORD
2h 42mnonstop
2:46 pm - 8:44 pmORD-BIL
6h 58m1 stop
$289American Airlines
Find Deal
Fri, Aug 22 - Sat, Aug 30
1:00 pm - 4:55 pmBIL-ORD
2h 55mnonstop
9:00 am - 11:21 amORD-BIL
3h 21mnonstop
$309United Airlines
Find Deal
Sat, Aug 16 - Wed, Aug 20
1:00 pm - 4:55 pmBIL-ORD
2h 55mnonstop
5:00 am - 9:54 amORD-BIL
5h 54m1 stop
$319United Airlines
Find Deal
Thu, Aug 14 - Sun, Aug 17
1:34 pm - 11:59 pmBIL-ORD
9h 25m1 stop
7:00 am - 1:17 pmORD-BIL
7h 17m1 stop
$420Hawaiian Airlines
Find Deal
Mon, May 12 - Fri, May 16
3:47 pm - 6:05 amBIL-ORD
13h 18m2 stops
6:58 pm - 12:49 pmORD-BIL
18h 51m2 stops
$446Alaska Airlines
Find Deal
Thu, Apr 24 - Thu, May 1
1:22 pm - 11:59 pmBIL-ORD
9h 37m1 stop
7:16 pm - 11:19 pmORD-BIL
29h 03m1 stop
$475Alaska Airlines
Find Deal
Mon, Mar 24 - Fri, Mar 28

Good to know

Low season

May

High season

July

Cheapest flight

$157
Best time to beat the crowds with an average 53% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Billings to St. Louis

FAQs - booking Illinois flights

  • How long is the flight to Illinois from Billings?

    Flights to Chicago3h 02m
  • What is the cheapest flight to Illinois from Billings?

    The cheapest ticket to Illinois from Billings found in the last 72 hours was $157 one-way, and $313 round-trip. The most popular route is from Billings Logan Intl to Chicago O'Hare Intl, and the cheapest round-trip airline ticket found on this route in the last 72 hours was $172.

  • How does KAYAK find such low prices on flights from Billings 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 Billings to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Billings 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 Billings 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 Billings 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 Billings 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 Billings to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Billings to the following destinations at these prices or less: Chicago $285 one-way - $503 round-trip
  • High season is considered to be January, November and December. The cheapest month to fly from Billings is May.
  • Morning departure is around 5% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 3 airlines serving from Billings to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Billings 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 Billings 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 7973 reviews
8.2Boarding
8.5Crew
8.0Comfort
7.3Food
7.9Entertainment
Airline reviews

The WiFi didn't seem as fast as it normally is

10.0 ExcellentKristopher, Mar 2025AVL - ATL
Read more Delta reviews

The WiFi didn't seem as fast as it normally is

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Delta is a premier airline so my expectations are most always met.

Seats are much much more comfortable than United, which is what I usually fly

Zero updates from the pilots for 30 minutes in the tarmac

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

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

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

They canceled our flight and left us stranded to figure it out

Everything was very good. Was able to change a make run flight leaving on direct earlier in the app -seamless!!! Well done

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

Delayed due to no crew. On a major holiday travel day.

Other than being delayed 5.5 hours and having to get a hotel because I missed my connecting flight, it was an okay flight. No in-flight Wi-Fi or entertainment.

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

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

Information on your arrival and departure airports

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