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Find cheap flights from Boise to Illinois from $53

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Illinois departing on 5/21. 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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Best Illinois Flight Deals

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

Chicago
Chicago2 stops$158
Moline
Moline1 stop$272
Peoria
Peoria2 stops$298
Bloomington
Bloomington1 stop$552
Champaign
Champaign1 stop$670
St. Louis
St. Louis3 stops$215

Good to know

Low season

February

High season

July

Cheapest flight

$53
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Boise to St. Louis

FAQs - booking Illinois flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Boise 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 Boise 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 to Illinois with an airline and back to Boise with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise 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 to Illinois from Boise 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 Boise to the following destinations at these prices or less: Chicago $374 one-way - $752 round-trip
  • Morning departure is around 358% more expensive 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 5 airlines serving from Boise to Illinois

 
Need help choosing which airline to fly with from Boise 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.
8.2
Singapore AirlinesOverall score based on 1465 reviews
8.4Boarding
8.2Entertainment
7.8Food
8.7Crew
8.1Comfort
Airline reviews

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

8.0 ExcellentAnonymous, Apr 2024SIN - JFK
Read more about Singapore Airlines reviews

My overall experience with Singapore Airlines is great. Will definitely fly Singapore airline again.

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

It was a great flight Food was great Crew was spectacular

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

They are great with every aspect of customer service. Helped my elderly father and aided him with using the restroom.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

The Palm Springs to Chicago O’Hare was on Time and Palm Springs airport is easier navigate. As our connection was only an approximately 50 minutes, we asked staff for insights for the Chicago airport in terms of transferring into the other terminal from which our flight left, and they were unhelpful. However, the United App was very helpful in terms of notifications and even providing directions. The Chicago to Detroit flight was significantly delayed which we all know does happen. However, there were very few updates or notifications as to why this was happening when we would actually arrive. It took nearly 30 minutes for bags to make it to baggage claim. We arrived nearly 1 hour late on a 40 minute flight.

Flight cancelled due to fog. No other flights available for 36 hours. Directed by United to book passage on another carrier, and submit receipts for reimbursement. Did that. United now states they will not reimburse. Currently out 2 grand.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Turn on the heat. Flight was way too cold from Arizona to Chicago.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

No basic services such as water, snacks. Internet very expensive. Seats were very small, hard and uncomfortable. Alaskan Airlines, my outbound flight to Boise from Orlando, offered beverage service, a snack, and reasonable priced internet, for the same price as my return trip on Spirit. It had more comfortable seating also.

Had to board plan 2x due to lack of security check after 1st boarding

Miserable. The crew was rude, the flight was delayed 5 hours for mechanical reasons and then “weather” even though other planes were leaving.

They kept Changing the flight times. It was delayed several times and at one point it was supposed to depart at 3.40am! At which point we ended up staying overnight and booked long a separate United flight for early morning departure. The spirit flight then got moved up and left at 1.30 in the morning when it was supposed to leave at 9.40pm the night before.

Flight was delayed...not horribly late. Just before push back engine shut down for a quick replacement item that took about five minutes. After that, everything was smooth and the pilot was able to make up time in the air so that our arrival time was not too far off the original anticipated arrival time.

Only inflight purchases for food and water. Nothing comes with ticket price. Have to purchase bags, food...

Book cheap flights from Boise to Illinois

Recent round-trip flight deals

5/15qua
2 stopsSpirit Airlines
11h 40mBOI-ORD
5/21ter
1 stopSpirit Airlines
8h 12mORD-BOI
$158
5/14ter
1 stopSpirit Airlines
8h 15mBOI-ORD
5/18sáb
1 stopSpirit Airlines
9h 34mORD-BOI
$164
8/30sex
1 stopDelta
6h 26mBOI-MDW
9/1dom
1 stopDelta
7h 29mMDW-BOI
$248
6/2dom
1 stopDelta
5h 34mBOI-ORD
6/9dom
1 stopDelta
5h 22mORD-BOI
$248
5/22qua
1 stop
8h 54mBOI-ORD
5/26dom
3 stops
33h 00mORD-BOI
$251
5/21ter
3 stops
18h 20mBOI-ORD
5/31sex
2 stops
20h 34mORD-BOI
$259
8/24sáb
1 stopUnited Airlines
5h 41mBOI-MLI
8/28qua
2 stopsUnited Airlines
10h 15mMLI-BOI
$293
9/7sáb
2 stopsUnited Airlines
12h 07mBOI-PIA
9/11qua
2 stopsUnited Airlines
10h 20mPIA-BOI
$298
7/8seg
1 stopAmerican Airlines
6h 46mBOI-ORD
7/15seg
1 stopAmerican Airlines
6h 56mORD-BOI
$298
7/15seg
1 stopAmerican Airlines
6h 46mBOI-ORD
7/20sáb
1 stopAmerican Airlines
6h 56mORD-BOI
$318

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Recent one-way flight deals

5/21ter
1 stopSpirit Airlines
12h 31mBOI-STL
$53
5/14ter
1 stopSpirit Airlines
12h 10mBOI-ORD
$71
7/6sáb
1 stopDelta
7h 16mBOI-MDW
$124
6/14sex
1 stopDelta
7h 26mBOI-ORD
$124
5/29qua
2 stopsAlaska Airlines
11h 49mBOI-ORD
$152
6/1sáb
2 stopsAlaska Airlines
11h 00mBOI-ORD
$162
7/5sex
nonstopUnited Airlines
3h 30mBOI-ORD
$245
5/21ter
3 stopsUnited Airlines
16h 45mBOI-STL
$274
7/6sáb
2 stopsAmerican Airlines
17h 30mBOI-ORD
$552
7/6sáb
2 stopsAmerican Airlines
9h 31mBOI-ORD
$589

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Last minute flights from Boise to Illinois

Last minute flight, train and bus deals

5/9qui
multi-stopSpirit Airlines
12h 20mBOI-ORD
5/13seg
multi-stopSpirit Airlines
25h 33mORD-BOI
$278
5/9qui
multi-stopSpirit Airlines
8h 50mBOI-ORD
5/13seg
multi-stopSpirit Airlines
25h 25mORD-BOI
$285
5/7ter
multi-stop
33h 10mBOI-ORD
5/11sáb
multi-stop
9h 34mORD-BOI
$383
5/7ter
multi-stopAmerican Airlines
9h 30mBOI-ORD
5/9qui
multi-stopAmerican Airlines
8h 00mORD-BOI
$402
5/7ter
multi-stopDelta
9h 24mBOI-ORD
5/9qui
multi-stopDelta
8h 35mORD-BOI
$438
5/9qui
multi-stop
18h 45mBOI-ORD
5/13seg
multi-stop
26h 32mORD-BOI
$439
5/7ter
multi-stopDelta
5h 34mBOI-ORD
5/9qui
multi-stopDelta
9h 19mORD-BOI
$443
5/9qui
multi-stopUnited Airlines
9h 11mBOI-MLI
5/13seg
multi-stopUnited Airlines
8h 13mMLI-BOI
$490
5/7ter
multi-stopUnited Airlines
7h 15mBOI-ORD
5/11sáb
nonstopUnited Airlines
4h 05mORD-BOI
$498
5/5dom
multi-stopAmerican Airlines
10h 13mBOI-ORD
5/10sex
multi-stopAmerican Airlines
8h 52mORD-BOI
$1,543

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Boise - Illinois Flights

Departure:

Boise (BOI)United States

Return flight deals:

Illinois - Boise

Cabin classes:

$1,133
$1,262
$1,362
$539