Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Illinois to Ottawa from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Ottawa departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Illinois to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:55 pm - 2:58 pm
ORD
-
YOW
21h 03m1 stop
Multiple Airlines Logo
7:00 am - 10:36 pm
YOW
-
ORD
16h 36m1 stop
$241Multiple Airlines
Wed, Jan 7 - Thu, Jan 22
Multiple Airlines Logo
7:21 pm - 2:58 pm
ORD
-
YOW
18h 37m1 stop
Multiple Airlines Logo
7:00 am - 11:24 pm
YOW
-
ORD
17h 24m1 stop
$246Multiple Airlines
Mon, Feb 9 - Thu, Feb 19
Multiple Airlines Logo
7:20 am - 5:25 pm
ORD
-
YOW
9h 05m1 stop
Multiple Airlines Logo
7:00 am - 11:24 pm
YOW
-
ORD
17h 24m1 stop
$259Multiple Airlines
Tue, Feb 10 - Thu, Feb 19
Multiple Airlines Logo
5:32 pm - 5:25 pm
ORD
-
YOW
22h 53m1 stop
Multiple Airlines Logo
7:00 am - 9:03 pm
YOW
-
ORD
15h 03m1 stop
$260Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Air Canada Logo
4:05 pm - 11:08 pm
STL
-
YOW
6h 03m1 stop
Air Canada Logo
10:20 am - 3:29 pm
YOW
-
STL
6h 09m1 stop
$362Air Canada
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
11:20 am - 9:56 pm
STL
-
YOW
9h 36m2 stops
United Airlines Logo
5:55 pm - 11:59 pm
YOW
-
STL
7h 04m1 stop
$373United Airlines
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
7:00 am - 1:32 pm
STL
-
YOW
5h 32m1 stop
United Airlines Logo
6:20 am - 12:29 pm
YOW
-
STL
7h 09m1 stop
$374United Airlines
Mon, Jan 12 - Wed, Jan 14
Air Canada Logo
8:05 am - 4:23 pm
STL
-
YOW
7h 18m2 stops
Air Canada Logo
5:00 am - 2:30 pm
YOW
-
STL
10h 30m2 stops
$459Air Canada
Mon, Feb 2 - Thu, Feb 5
WestJet Logo
3:35 pm - 12:39 am
BMI
-
YOW
32h 04m2 stops
WestJet Logo
5:40 am - 2:50 pm
YOW
-
BMI
34h 10m2 stops
$1,034WestJet
Sun, Feb 1 - Wed, Feb 4
WestJet Logo
3:35 pm - 12:39 am
BMI
-
YOW
32h 04m2 stops
WestJet Logo
5:40 am - 2:50 pm
YOW
-
BMI
34h 10m2 stops
$1,056WestJet
Sun, Feb 1 - Wed, Feb 4

WestJet flights from Illinois to Ottawa

Our best WestJet deals on Illinois to Ottawa flight tickets
WestJet
Apr 30
ORD5:30 pmChicago O'Hare Intl
12h 25m
1 stop
YOW6:55 amOttawa
May 4
YOW7:45 amOttawa
9h 58m
1 stop
ORD4:43 pmChicago O'Hare Intl
$291
Find similar
WestJet
May 8
ORD5:30 pmChicago O'Hare Intl
30h 10m
1 stop
YOW12:40 amOttawa
May 10
YOW7:45 amOttawa
9h 58m
1 stop
ORD4:43 pmChicago O'Hare Intl
$315
Find similar
WestJet
May 22
ORD5:30 pmChicago O'Hare Intl
30h 10m
1 stop
YOW12:40 amOttawa
May 25
YOW6:00 amOttawa
11h 43m
1 stop
ORD4:43 pmChicago O'Hare Intl
$316
Find similar

United Airlines flights from Illinois to Ottawa

Our best United Airlines deals on Illinois to Ottawa flight tickets
United Airlines
Feb 2
STL11:20 amLambert-St Louis
9h 36m
2 stops
YOW9:56 pmOttawa
Feb 5
YOW5:55 pmOttawa
7h 04m
1 stop
STL11:59 pmLambert-St Louis
$373
Find similar
United Airlines
Jan 12
STL7:00 amLambert-St Louis
5h 32m
1 stop
YOW1:32 pmOttawa
Jan 14
YOW6:20 amOttawa
7h 09m
1 stop
STL12:29 pmLambert-St Louis
$374
Find similar
United Airlines
Jan 12
STL7:00 amLambert-St Louis
5h 32m
1 stop
YOW1:32 pmOttawa
Jan 14
YOW6:00 amOttawa
9h 30m
2 stops
STL2:30 pmLambert-St Louis
$384
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Illinois to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 1/7

4:55 pm-2:58 pm

1 stop21h 03m

Ottawa

Thu 1/22

7:00 am-10:36 pm

1 stop16h 36m

$241

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 2/9

7:21 pm-2:58 pm

1 stop18h 37m

Ottawa

Thu 2/19

7:00 am-11:24 pm

1 stop17h 24m

$246

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 2/10

7:20 am-5:25 pm

1 stop9h 05m

Ottawa

Thu 2/19

7:00 am-11:24 pm

1 stop17h 24m

$259

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 1/13

5:32 pm-5:25 pm

1 stop22h 53m

Ottawa

Tue 1/20

7:00 am-9:03 pm

1 stop15h 03m

$260

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 2/2

4:05 pm-11:08 pm

1 stop6h 03m

Ottawa

Thu 2/5

10:20 am-3:29 pm

1 stop6h 09m

$362

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 2/2

11:20 am-9:56 pm

2 stops9h 36m

Ottawa

Thu 2/5

5:55 pm-11:59 pm

1 stop7h 04m

$373

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 1/12

7:00 am-1:32 pm

1 stop5h 32m

Ottawa

Wed 1/14

6:20 am-12:29 pm

1 stop7h 09m

$374

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 2/2

8:05 am-4:23 pm

2 stops7h 18m

Ottawa

Thu 2/5

5:00 am-2:30 pm

2 stops10h 30m

$459

BloomingtonOttawa

BMI - YOW

BMIYOW

Bloomington-Normal

Sun 2/1

3:35 pm-12:39 am

2 stops32h 04m

Ottawa

Wed 2/4

5:40 am-2:50 pm

2 stops34h 10m

$1,034

BloomingtonOttawa

BMI - YOW

BMIYOW

Bloomington-Normal

Sun 2/1

3:35 pm-12:39 am

2 stops32h 04m

Ottawa

Wed 2/4

5:40 am-2:50 pm

2 stops34h 10m

$1,056

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ottawa from

How to get the cheapest flight ticket from Illinois to Ottawa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ottawa?

In general, May is the cheapest month to fly from Illinois to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $339. The month of September is another great option to travel to Ottawa, with average flight prices from Illinois averaging around $400.

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart from Illinois to Ottawa is on a Saturday. Travelers who choose to depart for Ottawa on a Saturday will often find tickets for as low as $532. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Tuesday is $697.

What is the cheapest time of day to depart on your flight to Ottawa?

At noon is the cheapest time of day to fly from Illinois to Ottawa when you can find flight prices for as low as $552. Flying to Ottawa at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $626 on average. Flights to Ottawa from Illinois in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Ottawa flight route?

Fly from Chicago O'Hare Intl to Ottawa for the best Illinois - Ottawa flight prices

What cabin class options are available on Illinois to Ottawa flights?

There are 3 cabin classes available to choose from on Illinois to Ottawa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Ottawa flights?

You could potentially save up to 40% on your flight if you consider stops on a Illinois to Ottawa flight.

Cheap Illinois to Ottawa flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Ottawa

Best Price Found

$399

Fastest flight time

1h 52m

Direct flights

Tue, Wed, Thu, Fri and Sat

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Illinois in the past 72 hours is $399. The best round-trip flight deal from Illinois to Ottawa found on momondo in the last 72 hours is $630.
The fastest flight from Illinois to Ottawa takes 1h 52m
Direct flights go from Illinois to Ottawa on Tuesday, Wednesday, Thursday, Friday and Saturday. There are no airlines offering direct flights.
There is 1 airport in Ottawa. From Illinois there are direct flights to Ottawa (YOW).
Search flight deals

  • When did momondo last update prices for flights from Illinois to Ottawa Airport?

    Prices for flights from Illinois to Ottawa Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Ottawa Airport?

  • How old do you have to be to fly from Illinois to Ottawa Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The necessary travel and health documents for your Ottawa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Ottawa?

Best airlines flying from Illinois to Ottawa

Compare and see reviews for airlines that fly from Illinois to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $189Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,090 reviews
Search United Airlines flights
Porter AirlinesPriceFrom $250Free CancellationRating
8.0
399 reviews
Search Porter Airlines flights

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Brockville
Calabogie
Petawawa
Smiths Falls
Perth
Prescott
Winchester
Wakefield

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ottawa?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Ottawa for you.

Can I find flights from Illinois to Ottawa with flexible booking policies on momondo?

Yes. All flights to Ottawa from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Ottawa?

Once you have performed a search for Illinois to Ottawa flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Ottawa right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Ottawa now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ottawa and let you know when they change.

An easier way to manage your Ottawa trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada