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Cheap flights from Illinois to Ottawa from $148

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 3/2. 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

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Find the cheapest flights from Illinois to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 5:25 pm
ORD
-
YOW
9h 25m
1 stop
Multiple Airlines Logo
4:20 pm - 11:38 pm
YOW
-
ORD
8h 18m
1 stop
$317Multiple Airlines
Tue, Feb 24 - Tue, Mar 10
Multiple Airlines Logo
7:00 am - 5:25 pm
ORD
-
YOW
9h 25m
1 stop
Multiple Airlines Logo
4:15 pm - 10:36 am
YOW
-
ORD
19h 21m
1 stop
$319Multiple Airlines
Wed, Mar 4 - Mon, Mar 9
Multiple Airlines Logo
12:44 pm - 11:58 pm
ORD
-
YOW
10h 14m
1 stop
Multiple Airlines Logo
7:00 am - 7:11 pm
YOW
-
ORD
13h 11m
1 stop
$320Multiple Airlines
Tue, Feb 24 - Wed, Mar 4
Multiple Airlines Logo
8:16 pm - 5:25 pm
ORD
-
YOW
20h 09m
1 stop
Multiple Airlines Logo
9:30 am - 5:46 pm
YOW
-
ORD
9h 16m
1 stop
$322Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
7:41 am - 5:07 pm
STL
-
YOW
8h 26m
1 stop
United Airlines Logo
6:00 am - 10:44 am
YOW
-
STL
5h 44m
1 stop
$382United Airlines
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
7:41 am - 9:56 pm
STL
-
YOW
13h 15m
2 stops
United Airlines Logo
6:00 am - 10:44 am
YOW
-
STL
5h 44m
1 stop
$391United Airlines
Sun, Mar 1 - Sun, Mar 8
Porter Airlines Logo
11:00 am - 6:24 pm
MDW
-
YOW
6h 24m
1 stop
Porter Airlines Logo
6:45 am - 10:05 am
YOW
-
MDW
4h 20m
1 stop
$408Porter Airlines
Thu, Mar 19 - Thu, Mar 26
Air Canada Logo
5:00 am - 3:23 pm
STL
-
YOW
9h 23m
2 stops
Air Canada Logo
10:20 am - 3:29 pm
YOW
-
STL
6h 09m
1 stop
$413Air Canada
Thu, Mar 19 - Thu, Mar 26
Porter Airlines Logo
11:05 am - 6:09 pm
MDW
-
YOW
6h 04m
1 stop
Porter Airlines Logo
6:45 am - 10:05 am
YOW
-
MDW
4h 20m
1 stop
$424Porter Airlines
Tue, Feb 24 - Wed, Mar 4
American Airlines Logo
9:20 am - 12:38 am
STL
-
YOW
14h 18m
2 stops
American Airlines Logo
6:45 am - 11:44 pm
YOW
-
STL
17h 59m
2 stops
$484American Airlines
Sun, Mar 1 - Sun, Mar 8

United Airlines flights from Illinois to Ottawa

Our best United Airlines deals on Illinois to Ottawa flight tickets
United Airlines
Mar 1
STL7:41 amLambert-St Louis
8h 26m
1 stop
YOW5:07 pmOttawa
Mar 8
YOW6:00 amOttawa
5h 44m
1 stop
STL10:44 amLambert-St Louis
$382
United Airlines
Mar 1
STL7:41 amLambert-St Louis
13h 15m
2 stops
YOW9:56 pmOttawa
Mar 8
YOW6:00 amOttawa
5h 44m
1 stop
STL10:44 amLambert-St Louis
$391
United Airlines
Mar 19
STL5:00 amLambert-St Louis
4h 26m
1 stop
YOW10:26 amOttawa
Mar 26
YOW5:11 pmOttawa
6h 48m
1 stop
STL10:59 pmLambert-St Louis
$466

Air Canada flights from Illinois to Ottawa

Our best Air Canada deals on Illinois to Ottawa flight tickets
Air Canada
Mar 19
STL5:00 amLambert-St Louis
9h 23m
2 stops
YOW3:23 pmOttawa
Mar 26
YOW10:20 amOttawa
6h 09m
1 stop
STL3:29 pmLambert-St Louis
$413
Air Canada
Feb 5
ORD7:15 amChicago O'Hare Intl
5h 52m
1 stop
YOW2:07 pmOttawa
Feb 8
YOW9:15 amOttawa
6h 55m
1 stop
ORD3:10 pmChicago O'Hare Intl
$760
Air Canada
Feb 17
ORD7:25 amChicago O'Hare Intl
2h 01m
YOW10:26 amOttawa
Mar 24
YOW5:00 amOttawa
5h 13m
1 stop
ORD9:13 amChicago O'Hare Intl
$790

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 February 3, 2026.
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

Tue 2/24

7:00 am-5:25 pm

1 stop9h 25m

Ottawa

Tue 3/10

4:20 pm-11:38 pm

1 stop8h 18m

$317

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 3/4

7:00 am-5:25 pm

1 stop9h 25m

Ottawa

Mon 3/9

4:15 pm-10:36 am

1 stop19h 21m

$319

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 2/24

12:44 pm-11:58 pm

1 stop10h 14m

Ottawa

Wed 3/4

7:00 am-7:11 pm

1 stop13h 11m

$320

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 3/3

8:16 pm-5:25 pm

1 stop20h 09m

Ottawa

Tue 3/10

9:30 am-5:46 pm

1 stop9h 16m

$322

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 3/1

7:41 am-5:07 pm

1 stop8h 26m

Ottawa

Sun 3/8

6:00 am-10:44 am

1 stop5h 44m

$382

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 3/1

7:41 am-9:56 pm

2 stops13h 15m

Ottawa

Sun 3/8

6:00 am-10:44 am

1 stop5h 44m

$391

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 3/19

11:00 am-6:24 pm

1 stop6h 24m

Ottawa

Thu 3/26

6:45 am-10:05 am

1 stop4h 20m

$408

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 3/19

5:00 am-3:23 pm

2 stops9h 23m

Ottawa

Thu 3/26

10:20 am-3:29 pm

1 stop6h 09m

$413

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 2/24

11:05 am-6:09 pm

1 stop6h 04m

Ottawa

Wed 3/4

6:45 am-10:05 am

1 stop4h 20m

$424

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 3/1

9:20 am-12:38 am

2 stops14h 18m

Ottawa

Sun 3/8

6:45 am-11:44 pm

2 stops17h 59m

$484

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $524. 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 $789.

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 $557. 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 $607 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 33% 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

$387

Fastest flight time

1h 52m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Illinois in the past 72 hours is $387. The best round-trip flight deal from Illinois to Ottawa found on momondo in the last 72 hours is $366.
The fastest flight from Illinois to Ottawa takes 1h 52m
Direct flights go from Illinois to Ottawa every day.
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
10,684 reviews
Search Air Canada flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Calabogie
Brockville
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.

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