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Find cheap flights from Ottawa to Illinois from $210

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa 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
qua 6/12
qua 6/19

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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$320
St. Louis
St. Louis1 stop$409

Good to know

Low season

January

High season

May

Cheapest flight

$210
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Ottawa to Chicago O'Hare Airport

FAQs - booking Illinois flights

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ottawa 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 Ottawa 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 Ottawa to the following destinations at these prices or less: Chicago $387 one-way - $579 round-trip
  • Morning departure is around 36% 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 Ottawa to Illinois

 
Need help choosing which airline to fly with from Ottawa 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.
7.5
Air FranceOverall score based on 1771 reviews
7.2Food
8.2Crew
7.1Entertainment
7.4Comfort
7.5Boarding
Airline reviews

The check in was horrible. I stood in line for 1 hour to check in with an Air France ticket. Then I was told I had to go to Delta counter onstead to check in instead. It made no sense.

8.0 ExcellentRussell, Apr 2024BCN - JFK
Read more about Air France reviews

The check in was horrible. I stood in line for 1 hour to check in with an Air France ticket. Then I was told I had to go to Delta counter onstead to check in instead. It made no sense.

Medíocre. The food wasn't good (although not bad, bad) and the staff wasn't kind. I asked for n extra blanket, the steward never came back, serving us roughly.

Generally good. The crew is excellent. The food could be better.

They wanted to close counter although they did not provide the wheelchair requested which ended by going alone to transit security and lost long time and they did not want to wait .

They charge me for luggage which is was included on the ticket

Business class in the second leg - CDG-EVN was a disaster.

Everything went smoothly with Air France. There was a delay in departure which seemed to relate to the immigration services being short staffed.

Lost luggage, 2 bags were badly damaged and one of the bags came open.

Crew was professional. Boarding has few seats . Since the plane was not full would have been nice to change seat on the internet

their gluten free lactose meal is the best, I have never been satisfied with my flight meals. I definitely enjoyed my flight and the chair is very spacious for economy. I'm so glad Delta is my flight way back to NY.

Too many oversized carryon baggage. If carrier reduced checked luggage fee this could be avoided. The staff were friendly and helpful, very professional.

Nice smooth flight with pleasant stewards. Slept most of the flight, they could have slowly turned on the lights to make it more pleasant. Otherwise a good trip.

Great! No food was available during the flight due to the catering service strike but snacks were given throughout the flight which was nice.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Crew was rude.didn’t even say hi or welcome to board

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Departure delay on a late night flight. Made us even later. Tired but got home.

Westjet forced me to put my carry-on baggage in check-in probably because I was assigned seat 23A (the last row seat), which had no cabin space, which is unfair. I wanted to carry on my luggage so that I don't have to wait at the airport for my luggage. Also, because there was no cabin space, I was forced to keep my laptop bag under the seat, which I didn't want to as I was carrying 2 laptops and charger. The airline should basically tell people that if you are assigned a last row seat, then you are not allowed a cabin baggage or a personal item.

Easy processing, flight time was quick and staff was professional and kind.

It was delayed by two ours very full no room to move

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Two flights,both poor. No entertainment. Cramped and uncomfortable seats, little space, the rest was OK. Staff were acceptable good.

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.

We were delayed an hour leaving Munich (No fault of the crew). They kept us posted on the status so we knew what was going on, but as a result we missed our connection in Chicago and the communication on connecting flights was pretty poor as we disembarked. It was already stressful and some of that could have been reduced by better communications about where to find transfers, etc.

One problem, but a serious one - the plane is built with electric windows that tint dark to reduce light. Sitting next to the window is VERY UNCOMFORTABLE as it emits so much HEAT in the face when tinted.

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

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

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

Rude Customer Service at checkin, 90 minute limit in flight check in is too strict. I was in line for 30 minutes because of slow/insufficient workers. Somewhere I got to the the counter of course the employee warned me about the 90 minutes. People were cutting the lines. No one did anything.

Everything was great. I really like how they had their safety film set up showing you the beauty of the country.

I liked the early check in. Flight was a bit bumpy due yo weather. Overall, everything went well.

Limited snack options cause the snack vendor was on strike

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

Flight was delayed, I had to put my luggage all the way in the back! They served only a beverage no snack on the way in Air Canada, definitely not a good first impression.

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

Our flight to Chicago O'Hare was delayed an hour, causing us to miss our connection to MSP and spend an extra 3 hours at O'Hare so we could board a plane with a damaged door and wait another 45 minutes or so. The crew was great, the food decent, The drinks were great: 2 glasses of a nice South African Shiraz, an ice cold can of Beck's Beer, and Dewar's White Label on the rocks.

A350 has great entertainment. Make sure to watch the plane's external tail and nose camera's on landing and take off. Seats were a little hard for a 10 hour flight. I am gluten intolerant, they had good alternative meals for me on the flight.

Boarding was horrible. We were packed into a bus with few seats and made to stand for 10 to 15 minutes, then driven for 5 minutes on wild curves. Complementary food and drink was a tiny chocolate and a bottle of water. Seating was cramped. Aircraft had no video.

didn’t even get to go one of my returning flights cancelled and I wasn’t even in their system, vacation ruined thanks for nothing

Need more time for connecting flights in Munich Food seems worse now on Lufthansa Very uncomfortable seats

Better flight than mum to Frankfurt. But food was very mediocre.

Flight landed on time but land services kept us in the plane for 3 hours. I missed connecting flight.

Everything was fine except that the ground personnel in Toronto wasn't able to operate the jet bridge, so that everybody was stuck in the plane after landing for 40 min, so I missed my connection.

Book cheap flights from Ottawa to Illinois

Recent round-trip flight deals

8/24sáb
1 stop
7h 41mYOW-ORD
8/27ter
1 stop
7h 53mORD-YOW
$320
5/26dom
1 stop
10h 46mYOW-ORD
5/29qua
1 stop
7h 53mORD-YOW
$341
6/18ter
1 stopPorter Airlines
3h 57mYOW-MDW
6/20qui
1 stopPorter Airlines
6h 29mMDW-YOW
$345
6/11ter
1 stopPorter Airlines
3h 57mYOW-MDW
6/17seg
1 stopPorter Airlines
4h 04mMDW-YOW
$348
9/7sáb
2 stopsUnited Airlines
15h 37mYOW-STL
9/10ter
1 stopUnited Airlines
11h 19mSTL-YOW
$473
9/7sáb
2 stopsAir Canada
15h 37mYOW-STL
9/10ter
1 stopAir Canada
11h 19mSTL-YOW
$495
6/12qua
2 stopsUnited Airlines
10h 36mYOW-STL
6/19qua
1 stopUnited Airlines
5h 37mSTL-YOW
$517
5/26dom
1 stopWestJet
10h 05mYOW-ORD
5/31sex
1 stopWestJet
12h 02mORD-YOW
$531
8/2sex
1 stopAir Canada
4h 34mYOW-ORD
8/4dom
nonstopAir Canada
2h 18mORD-YOW
$534
5/27seg
2 stopsWestJet
27h 12mYOW-MDW
5/29qua
2 stopsWestJet
11h 03mMDW-YOW
$556

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Recent one-way flight deals

6/18ter
1 stop
10h 52mYOW-ORD
$210
6/18ter
2 stops
9h 37mYOW-ORD
$216
7/31qua
1 stopPorter Airlines
3h 57mYOW-MDW
$226
6/30dom
1 stopPorter Airlines
3h 32mYOW-MDW
$236
9/6sex
1 stopWestJet
11h 50mYOW-ORD
$279
9/6sex
nonstopAir Canada
2h 17mYOW-ORD
$286
6/18ter
nonstopAir Canada
2h 22mYOW-ORD
$289
6/30dom
2 stopsWestJet
23h 16mYOW-MDW
$319
9/6sex
2 stopsUnited Airlines
11h 20mYOW-ORD
$414
7/31qua
nonstopUnited Airlines
2h 22mYOW-ORD
$528

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Last minute flights from Ottawa to Illinois

Last minute flight, train and bus deals

5/17sex
multi-stopPorter Airlines
5h 47mYOW-MDW
5/19dom
multi-stopPorter Airlines
6h 39mMDW-YOW
$514
5/17sex
multi-stopPorter Airlines
4h 02mYOW-MDW
5/23qui
multi-stopPorter Airlines
3h 39mMDW-YOW
$533
5/15qua
multi-stop
8h 37mYOW-ORD
5/21ter
multi-stop
21h 52mORD-YOW
$587
5/15qua
multi-stop
8h 37mYOW-ORD
5/21ter
multi-stop
21h 39mORD-YOW
$593
5/15qua
multi-stopWestJet
21h 23mYOW-MDW
5/19dom
multi-stopWestJet
27h 52mMDW-YOW
$1,001
5/14ter
multi-stopWestJet
27h 12mYOW-MDW
5/21ter
multi-stopWestJet
31h 13mMDW-YOW
$1,012
5/15qua
nonstopAir Canada
2h 25mYOW-ORD
5/21ter
nonstopAir Canada
2h 08mORD-YOW
$1,151
5/17sex
multi-stopAir Canada
5h 44mYOW-ORD
5/21ter
multi-stopAir Canada
5h 02mORD-YOW
$1,163
5/15qua
multi-stopUnited Airlines
5h 35mYOW-ORD
5/18sáb
multi-stopUnited Airlines
6h 55mORD-YOW
$1,486
5/14ter
multi-stopUnited Airlines
5h 35mYOW-ORD
5/18sáb
multi-stopUnited Airlines
6h 50mORD-YOW
$1,642

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Ottawa - Illinois Flights

Departure:

Ottawa (YOW)Canada

Return flight deals:

Illinois - Ottawa

Cabin classes:

$978
$1,600
$1,263
$368