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Find cheap flights from Chicago to Big Sky from $86

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Big Sky departing on 7/18. 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
Mon 7/1
Mon 7/8

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Good to know

Low season

November

High season

August

Cheapest flight

$86
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Chicago O'Hare Airport to Bozeman

When to book flights from Chicago to Big Sky

Are your dates flexible? Find out the best times to travel from Chicago to Big Sky based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Chicago to Big Sky

  • Which airports will I be using when flying from Chicago to Big Sky?

    When flying out of Chicago you’ll be using one of these airports: Chicago Midway or Chicago O'Hare Intl. Big Sky does not have its own airport so you’ll be flying into nearby Bozeman Gallatin Field airport, which is 37.5 mi away.

  • How long does a flight from Chicago to Big Sky take?

    Direct flights cover the 1,198 miles separating Chicago and Big Sky in about 3h 15m.

  • How many flights are there between Chicago and Big Sky?

    6 direct flights run between Chicago and Big Sky on a daily basis. On average, there are about 47 departures each week.

  • What’s the cheapest day of the week to fly between Chicago and Big Sky?

    Consider leaving on a Friday and avoid Thursdays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

  • How does KAYAK find such low prices on flights from Chicago to Big Sky?

    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 Chicago to Big Sky.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Big Sky from Chicago 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 Chicago to Big Sky?

    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 Big Sky with an airline and back to Chicago with another airline.

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

    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 Big Sky from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Chicago to Big Sky?

    In the last 72 hours, the cheapest one-way ticket between Chicago and Big Sky found on KAYAK was with Sun Country Air for $86. Sun Country Air offered a round-trip connection from $175 and Alaska Airlines from $317.

See more FAQs

Top tips for finding cheap flights from Chicago to Big Sky

  • There is no airport in Big Sky. Instead, you’ll be flying into Gallatin Field Airport when flying between Chicago and Big Sky.
  • The cheapest flight from Chicago to Big Sky was found 88 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is January.
See more tips

Top 5 airlines serving Chicago to Big Sky

 
Need help choosing which airline to fly with from Chicago to Big Sky? 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
Alaska AirlinesOverall score based on 9198 reviews
8.2Boarding
7.3Food
7.3Entertainment
7.9Comfort
8.6Crew
Airline reviews

Offer snacks/meals for people with food sensitivities. HAVE TV SCREENS!

6.0 GoodAnonymous, May 2024SEA - IAD
Read more about Alaska Airlines reviews

Offer snacks/meals for people with food sensitivities. HAVE TV SCREENS!

The flight itself went well, except it left 1.5 hours late, and about 10 of us missed our Alaska Airlines connection by minutes; they wouldn't hold the plane, even though our arrival delay was caused by Alaska. No gluten-free options among the snacks; you had to order meals separately, but there was no consideration for food sensitivities. NO TELEVISION on a flight from Washington, DC to Seattle or from Seattle to Anchorage. I didn't know that ANY airlines offering cross-country flights didn't have screens for entertainment. This alone is a "never again" for me.

I have to eat gluten-free due to celiac disease, but so far no Alaska Air flight has offered a gluten-free option for the snack given out with free drinks. It seems like that wouldn't be too hard to do.

Crew was outstanding. Flight was fine. Food was a joke! I didn't get the priority I paid for!! That pissed me off since I paid extra!!!

I liked the price of the 2 way tix. I hated having to pay $8.00 for Internet access. It should be free. Legroom and seats are very confining.

I didn’t know that food needed to be ordered ahead. Please include this in the reservation information. Overall, very good experience.

Plane hit turbulence diverted to Houston. We'll probably get in after 3am

Cabin crew very friendly and pleasant. Flight left late but we didn't know why. Alaska Airlines app was not user friendly -- app wouldn't let us upgrade our seats, but no indication if flight was full. We wound up having to call the airline to request an upgrade and we were told none was available. Waste of time. Baggage retrieval was easy.

Full flight where I had another passenger sitting in middle seat who said that he had lost 250 lbs from 500. The stewardess on exiting the flight advise me that I was going to receive a refund. I thought she was talking about another passenger. The stewardess saw that to make him comfortable I had lifted the armrest and flew for 5 hours to Seattle from Reagan DCA with a portion of his body on my seat. I survived. I flight to remember!!!!

the flight was delayed almost 3 hours and not one time was we told that it was delayed or why. I had asked one of the crew members why it was delayed, 20 minutes after the flight was supposed to take off, and was told that they had no idea what was going on and that they had not been told anything. this is FRIGHTENING!!!! No excuse!!

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Because I can’t stand very long in one place, I was allowed to reword.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

I don't like that I have to pay if I want extra leg room. The seats are so expensive; I sit in normal seats and my legs and knees cramp the entire flight. I never feel comfortable on AA flights.

Flight was delayed at departure due to weather and the need for de-icing. The flight was smooth but there was a delay at arrival due to weather. We were in a hold for 20 minutes or more. The flight arrived more than 30 minutes late. Airlines have no control over the weather and I'm glad that they follow all safety procedures. Had to wait a long time for my checked luggage. Whole process was slow and the bags arrived wet due to the rain. The onboard wifi and entertainment access was spotty and the signal was dropped several times. Otherwise the crew was great and friendly. They tried to get everyone's bags stowed and seated so we could take off.

Regarding the boarding: it needs more efforts to make it more convenient

They were flexible and let my daughter and I sit in the back of the plane.

A flight attendant appeared to not be in a good mood that served us; felt she was being short. Overhead announcements were very loud compared to other airlines and the message was not friendly and was a little confusing. This flight was particularly over all was not satisfying compared to previous Sun Country flights.

Airlines should have to add their fees to their fares

I am upset with the hidden fees for bringing on an overhead carryon onto flight and also having to pay for my seat selection. This should all be part of the original price of the ticket. Very poor customer service

Sun country Wi-Fi was not working. Flight was overbooked by two people. Had to pay extra for carryons day before flight and I don’t like hidden fees like that.

WiFi did not work. Woman flight attendant in the rear of the plane was moody.

Flight delayed over 3 hrs due to unexplained issue. No text message to notify.

Well we did not realize at first it was a ground transfer, but we really enjoyed it and would definitely recommend to friends and family. Our driver was awesome and the ride was wonderful. A bathroom on board would have been nice, but at least we were warned that there wasn't one so we went ahead of time.

We were on a fairly long flight and they offered nothing for a snack (unless you paid) and then quickly gave you a drink and were never to be seen again. I would have loved a refill on my water but that was not an option. The flight attendants were standing on ther phone when we boarded and left and never even greeted us. Any other flight I have been on they would have welcomed us on the plane and again greeted us as we got off. Our landline transfer from MSP to Rochester on the other hand was FANTASTIC! We would highly recommend!

Took forever to get the plane loaded and unloaded. Longest I have ever had. I was in the middle of the plane and it almost took a hour after landing to get off of the plane.

Book cheap flights from Chicago to Big Sky

Recent round-trip flight deals

7/5Fri
1 stopSun Country Air
13h 32mORD-BZN
7/13Sat
1 stopSun Country Air
9h 26mBZN-ORD
$175
7/9Tue
1 stopSun Country Air
15h 52mORD-BZN
7/17Wed
1 stopSun Country Air
5h 39mBZN-ORD
$195
9/19Thu
1 stopAlaska Airlines
6h 54mORD-BZN
9/24Tue
1 stopAlaska Airlines
11h 35mBZN-ORD
$317
7/10Wed
1 stopAlaska Airlines
27h 37mORD-BZN
7/15Mon
1 stopAlaska Airlines
8h 00mBZN-ORD
$327
8/14Wed
nonstopAmerican Airlines
3h 15mORD-BZN
8/21Wed
nonstopAmerican Airlines
3h 00mBZN-ORD
$351
6/26Wed
nonstopUnited Airlines
3h 21mORD-BZN
7/3Wed
nonstopUnited Airlines
3h 03mBZN-ORD
$356
8/14Wed
1 stopAmerican Airlines
7h 23mORD-BZN
8/21Wed
nonstopAmerican Airlines
3h 00mBZN-ORD
$361
6/26Wed
nonstopUnited Airlines
3h 21mORD-BZN
7/3Wed
1 stopUnited Airlines
7h 33mBZN-ORD
$366
7/9Tue
2 stopsDelta
10h 02mORD-BZN
7/17Wed
1 stopDelta
5h 30mBZN-ORD
$375
7/10Wed
1 stopDelta
5h 27mMDW-BZN
7/15Mon
1 stopDelta
7h 24mBZN-MDW
$375

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Recent one-way flight deals

7/18Thu
1 stopSun Country Air
4h 53mORD-BZN
$86
7/2Tue
1 stopSun Country Air
14h 31mORD-BZN
$118
7/6Sat
nonstopAmerican Airlines
3h 25mORD-BZN
$186
8/18Sun
1 stopDelta
6h 07mORD-BZN
$190
7/6Sat
1 stopAmerican Airlines
9h 06mORD-BZN
$195
7/15Mon
1 stopAlaska Airlines
29h 37mORD-BZN
$223
7/18Thu
nonstopUnited Airlines
3h 20mORD-BZN
$226
6/17Mon
1 stopDelta
5h 40mMDW-BZN
$230
6/10Mon
1 stopAlaska Airlines
7h 31mORD-BZN
$230
6/18Tue
nonstopUnited Airlines
3h 25mORD-BZN
$231

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Last minute flights from Chicago to Big Sky

Last minute flight, train and bus deals

6/2Sun
multi-stop
9h 13mORD-BZN
7/7Sun
multi-stop
20h 02mBZN-ORD
$554
6/2Sun
multi-stop
9h 13mORD-BZN
7/7Sun
multi-stop
7h 16mBZN-ORD
$565
6/5Wed
multi-stopAlaska Airlines
9h 52mORD-BZN
6/12Wed
multi-stopAlaska Airlines
6h 40mBZN-ORD
$630
6/5Wed
nonstopAmerican Airlines
3h 26mORD-BZN
6/12Wed
nonstopAmerican Airlines
3h 04mBZN-ORD
$651
6/5Wed
multi-stopAmerican Airlines
8h 52mORD-BZN
6/12Wed
nonstopAmerican Airlines
3h 04mBZN-ORD
$661
6/5Wed
multi-stopDelta
9h 55mORD-BZN
6/12Wed
multi-stopDelta
10h 33mBZN-ORD
$668
6/2Sun
nonstopUnited Airlines
3h 25mORD-BZN
7/7Sun
nonstopUnited Airlines
3h 03mBZN-ORD
$701
6/2Sun
multi-stopUnited Airlines
5h 50mORD-BZN
7/7Sun
nonstopUnited Airlines
3h 03mBZN-ORD
$711
6/3Mon
multi-stopDelta
6h 37mORD-BZN
6/4Tue
multi-stopDelta
7h 15mBZN-ORD
$720
6/3Mon
multi-stopAlaska Airlines
20h 21mORD-BZN
6/5Wed
multi-stopAlaska Airlines
9h 39mBZN-ORD
$784

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Flights to Big Sky

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