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Find cheap flights from Boise to Illinois from $71

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 6/18. 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
0 bags
Sat 6/15
Sat 6/22

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Best Illinois Flight Deals

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

Chicago
Chicago1 stop$170
Moline
Moline1 stop$331
Peoria
Peoria2 stops$328
Bloomington
Bloomington1 stop$465
Champaign
Champaign1 stop$646
Springfield
Springfield2 stops$797
St. Louis
St. Louis1 stop$217

Good to know

Low season

February

High season

July

Cheapest flight

$71
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 $346 one-way - $749 round-trip
  • Morning departure is around 13% 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 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 1447 reviews
8.7Crew
8.1Comfort
7.8Food
8.1Entertainment
8.4Boarding
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.

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

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.

The CX617 from HK to BKK was delayed more than 1.5 hours.

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.

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

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.

Book cheap flights from Boise to Illinois

Recent round-trip flight deals

5/29Wed
1 stopSpirit Airlines
8h 54mBOI-ORD
6/4Tue
1 stopSpirit Airlines
7h 54mORD-BOI
$170
5/30Thu
1 stopSpirit Airlines
8h 50mBOI-ORD
6/2Sun
1 stopSpirit Airlines
7h 47mORD-BOI
$180
6/1Sat
1 stopSpirit Airlines
8h 25mBOI-ORD
6/15Sat
1 stopSpirit Airlines
11h 09mORD-BOI
$185
6/26Wed
1 stopSun Country Air
17h 15mBOI-ORD
7/2Tue
1 stopSun Country Air
24h 15mORD-BOI
$235
10/22Tue
1 stopDelta
7h 32mBOI-ORD
10/25Fri
1 stopDelta
6h 00mORD-BOI
$248
8/30Fri
1 stopDelta
6h 26mBOI-MDW
9/7Sat
2 stopsDelta
11h 38mMDW-BOI
$253
8/5Mon
1 stopUnited Airlines
5h 32mBOI-ORD
8/18Sun
nonstopUnited Airlines
3h 50mORD-BOI
$287
9/7Sat
2 stopsUnited Airlines
14h 07mBOI-PIA
9/11Wed
2 stopsUnited Airlines
10h 20mPIA-BOI
$328
6/8Sat
1 stopAmerican Airlines
7h 08mBOI-ORD
6/14Fri
1 stopAmerican Airlines
7h 00mORD-BOI
$348
6/26Wed
1 stopAmerican Airlines
16h 15mBOI-STL
6/28Fri
1 stopAmerican Airlines
6h 05mSTL-BOI
$433

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Recent one-way flight deals

6/18Tue
1 stopSpirit Airlines
14h 52mBOI-STL
$71
5/29Wed
1 stopSpirit Airlines
8h 54mBOI-ORD
$79
6/18Tue
1 stopAmerican Airlines
7h 44mBOI-ORD
$99
8/15Thu
1 stopDelta
6h 26mBOI-MDW
$124
6/14Fri
1 stopDelta
7h 26mBOI-ORD
$124
6/19Wed
3 stops
37h 25mBOI-ORD
$165
7/6Sat
1 stopAmerican Airlines
8h 14mBOI-ORD
$179
6/23Sun
3 stops
23h 52mBOI-ORD
$184
9/27Fri
2 stopsUnited Airlines
13h 57mBOI-STL
$216
7/9Tue
nonstopUnited Airlines
3h 30mBOI-ORD
$245

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Last minute flights from Boise to Illinois

Last minute flight, train and bus deals

5/18Sat
multi-stopAmerican Airlines
6h 10mBOI-ORD
5/21Tue
multi-stopAmerican Airlines
8h 00mORD-BOI
$392
5/17Fri
multi-stopSpirit Airlines
8h 25mBOI-ORD
5/20Mon
multi-stopSpirit Airlines
8h 12mORD-BOI
$393
5/18Sat
multi-stop
8h 25mBOI-ORD
5/21Tue
multi-stop
37h 51mORD-BOI
$443
5/18Sat
nonstopUnited Airlines
3h 37mBOI-ORD
5/20Mon
nonstopUnited Airlines
4h 05mORD-BOI
$459
5/17Fri
multi-stop
15h 10mBOI-ORD
5/20Mon
multi-stop
21h 30mORD-BOI
$463
5/18Sat
multi-stopUnited Airlines
5h 46mBOI-ORD
5/21Tue
nonstopUnited Airlines
4h 05mORD-BOI
$469
5/18Sat
multi-stopDelta
7h 03mBOI-ORD
5/21Tue
multi-stopDelta
7h 03mORD-BOI
$478
5/18Sat
multi-stopDelta
8h 55mBOI-ORD
5/21Tue
multi-stopDelta
8h 35mORD-BOI
$483
5/18Sat
multi-stopAlaska Airlines
7h 57mBOI-STL
5/21Tue
multi-stopAlaska Airlines
8h 07mSTL-BOI
$666
5/18Sat
multi-stopAlaska Airlines
7h 36mBOI-STL
5/21Tue
multi-stopAlaska Airlines
8h 07mSTL-BOI
$926

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Boise - Illinois Flights

Departure:

Boise (BOI)United States

Return flight deals:

Illinois - Boise

Cabin classes:

$1,133
$1,747
$1,043
$557