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Cheap flights from Illinois to Ottawa from $132

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 11/9. 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

Multiple Airlines Logo
9:35 am - 6:09 pmMDW-YOW
7h 34m1 stop
Multiple Airlines Logo
4:35 pm - 11:25 pmYOW-MDW
31h 50m2 stops
$315Multiple Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Multiple Airlines Logo
6:05 am - 5:13 pmORD-YOW
10h 08m1 stop
Multiple Airlines Logo
6:00 am - 1:35 pmYOW-ORD
32h 35m1 stop
$335Multiple Airlines
Find Deal
Sun, Nov 9 - Sun, Nov 16
United Airlines Logo
6:43 pm - 10:26 amSTL-YOW
14h 43m1 stop
United Airlines Logo
6:00 am - 3:46 pmYOW-STL
10h 46m2 stops
$372United Airlines
Find Deal
Sat, Nov 8 - Sat, Nov 15
Porter Airlines Logo
9:35 am - 6:09 pmMDW-YOW
7h 34m1 stop
Porter Airlines Logo
12:10 pm - 3:20 pmYOW-MDW
4h 10m1 stop
$374Porter Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Porter Airlines Logo
9:35 am - 4:34 pmMDW-YOW
5h 59m1 stop
Porter Airlines Logo
1:15 pm - 4:24 pmYOW-MDW
4h 09m1 stop
$382Porter Airlines
Find Deal
Fri, Oct 10 - Sun, Oct 12
WestJet Logo
2:20 pm - 12:40 amORD-YOW
9h 20m1 stop
WestJet Logo
5:45 pm - 1:35 pmYOW-ORD
20h 50m1 stop
$385WestJet
Find Deal
Fri, Nov 28 - Sun, Nov 30
WestJet Logo
2:20 pm - 12:40 amORD-YOW
9h 20m1 stop
WestJet Logo
5:45 pm - 1:35 pmYOW-ORD
20h 50m1 stop
$387WestJet
Find Deal
Fri, Dec 12 - Sun, Dec 14
Air Canada Logo
8:00 am - 11:08 pmSTL-YOW
14h 08m2 stops
Air Canada Logo
9:15 am - 3:29 pmYOW-STL
7h 14m1 stop
$395Air Canada
Find Deal
Fri, Nov 7 - Fri, Nov 14
Air Canada Logo
9:55 am - 3:04 pmORD-YOW
4h 09m1 stop
Air Canada Logo
10:30 am - 7:24 pmYOW-ORD
9h 54m1 stop
$396Air Canada
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Thu, Oct 16 - Mon, Oct 20
United Airlines Logo
1:55 pm - 5:06 pmORD-YOW
2h 11mnonstop
United Airlines Logo
5:25 pm - 6:54 pmYOW-ORD
2h 29mnonstop
$411United Airlines
Find Deal
Sun, Oct 12 - Sat, Oct 18

WestJet flights from Illinois to Ottawa

Our best WestJet deals on Illinois to Ottawa flight tickets
WestJet
Nov 28
ORD2:20 pmChicago O'Hare Intl
9h 20m
1 stop
YOW12:40 amOttawa
Nov 30
YOW5:45 pmOttawa
20h 50m
1 stop
ORD1:35 pmChicago O'Hare Intl
$385
Find similar
WestJet
Dec 12
ORD2:20 pmChicago O'Hare Intl
9h 20m
1 stop
YOW12:40 amOttawa
Dec 14
YOW5:45 pmOttawa
20h 50m
1 stop
ORD1:35 pmChicago O'Hare Intl
$387
Find similar
WestJet
Nov 25
ORD10:46 amChicago O'Hare Intl
12h 56m
2 stops
YOW12:42 amOttawa
Nov 30
YOW5:45 pmOttawa
20h 50m
1 stop
ORD1:35 pmChicago O'Hare Intl
$435
Find similar

Air Canada flights from Illinois to Ottawa

Our best Air Canada deals on Illinois to Ottawa flight tickets
Air Canada
Nov 7
STL8:00 amLambert-St Louis
14h 08m
2 stops
YOW11:08 pmOttawa
Nov 14
YOW9:15 amOttawa
7h 14m
1 stop
STL3:29 pmLambert-St Louis
$395
Find similar
Air Canada
Oct 16
ORD9:55 amChicago O'Hare Intl
4h 09m
1 stop
YOW3:04 pmOttawa
Oct 20
YOW10:30 amOttawa
9h 54m
1 stop
ORD7:24 pmChicago O'Hare Intl
$396
Find similar
Air Canada
Oct 16
ORD8:25 pmChicago O'Hare Intl
4h 09m
1 stop
YOW1:34 amOttawa
Oct 20
YOW10:30 amOttawa
9h 54m
1 stop
ORD7:24 pmChicago O'Hare Intl
$404
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 September 25, 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

MDW - YOW

MDWYOW

Chicago Midway

Wed 10/22

9:35 am-6:09 pm

1 stop7h 34m

Ottawa

Wed 10/29

4:35 pm-11:25 pm

2 stops31h 50m

$315

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 11/9

6:05 am-5:13 pm

1 stop10h 08m

Ottawa

Sun 11/16

6:00 am-1:35 pm

1 stop32h 35m

$335

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 11/8

6:43 pm-10:26 am

1 stop14h 43m

Ottawa

Sat 11/15

6:00 am-3:46 pm

2 stops10h 46m

$372

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 10/22

9:35 am-6:09 pm

1 stop7h 34m

Ottawa

Wed 10/29

12:10 pm-3:20 pm

1 stop4h 10m

$374

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 10/10

9:35 am-4:34 pm

1 stop5h 59m

Ottawa

Sun 10/12

1:15 pm-4:24 pm

1 stop4h 09m

$382

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 11/28

2:20 pm-12:40 am

1 stop9h 20m

Ottawa

Sun 11/30

5:45 pm-1:35 pm

1 stop20h 50m

$385

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 12/12

2:20 pm-12:40 am

1 stop9h 20m

Ottawa

Sun 12/14

5:45 pm-1:35 pm

1 stop20h 50m

$387

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Fri 11/7

8:00 am-11:08 pm

2 stops14h 08m

Ottawa

Fri 11/14

9:15 am-3:29 pm

1 stop7h 14m

$395

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 10/16

9:55 am-3:04 pm

1 stop4h 09m

Ottawa

Mon 10/20

10:30 am-7:24 pm

1 stop9h 54m

$396

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 10/12

1:55 pm-5:06 pm

Nonstop2h 11m

Ottawa

Sat 10/18

5:25 pm-6:54 pm

Nonstop2h 29m

$411

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 January is another great option to travel to Ottawa, with average flight prices from Illinois averaging around $424.

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

The cheapest day to depart from Illinois to Ottawa is on a Thursday. Travelers who choose to depart for Ottawa on a Thursday will often find tickets for as low as $551. 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 $666.

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

In the morning is the cheapest time of day to fly from Illinois to Ottawa when you can find flight prices for as low as $559. Flying to Ottawa in the morning 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 $664 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 4 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 25% 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

$509

Fastest flight time

2h 01m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Illinois in the past 72 hours is $509. The best round-trip flight deal from Illinois to Ottawa found on momondo in the last 72 hours is $400.
The fastest flight from Illinois to Ottawa takes 2h 01m
Direct flights go from Illinois to Ottawa every day.
There is 1 airport near Ottawa: 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
10,000 reviews
Search Air Canada flights
Porter AirlinesPriceFrom $189Free CancellationRating
7.9
369 reviews
Search Porter Airlines flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
8,928 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
Smiths Falls
Calabogie
Brockville
Pembroke
Petawawa
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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