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Cheap flights from Illinois to Ottawa from $193

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 8/12. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 12:54 pm
ORD
-
YOW
4h 54m
1 stop
Multiple Airlines Logo
6:25 pm - 11:00 am
YOW
-
ORD
17h 35m
1 stop
$365Multiple Airlines
Sat, Sep 5 - Sat, Sep 5
Multiple Airlines Logo
7:00 am - 5:35 pm
ORD
-
YOW
9h 35m
1 stop
Multiple Airlines Logo
6:25 pm - 11:00 am
YOW
-
ORD
17h 35m
1 stop
$393Multiple Airlines
Fri, Sep 4 - Sat, Sep 5
Multiple Airlines Logo
3:20 pm - 12:20 am
ORD
-
YOW
8h 00m
1 stop
Multiple Airlines Logo
6:25 pm - 11:00 am
YOW
-
ORD
17h 35m
1 stop
$401Multiple Airlines
Thu, Sep 3 - Sat, Sep 5
Porter Airlines Logo
7:00 am - 12:54 pm
ORD
-
YOW
4h 54m
1 stop
Porter Airlines Logo
10:40 am - 2:35 pm
YOW
-
ORD
4h 55m
1 stop
$406Porter Airlines
Sat, Sep 5 - Tue, Sep 8
Porter Airlines Logo
3:15 pm - 12:54 pm
MDW
-
YOW
20h 39m
1 stop
Porter Airlines Logo
8:45 pm - 9:45 am
YOW
-
MDW
14h 00m
1 stop
$427Porter Airlines
Fri, Aug 14 - Mon, Aug 17
United Airlines Logo
8:00 am - 9:35 pm
STL
-
YOW
12h 35m
1 stop
United Airlines Logo
5:20 pm - 10:00 pm
YOW
-
STL
5h 40m
1 stop
$487United Airlines
Mon, Aug 31 - Wed, Sep 2
Air Canada Logo
8:55 am - 3:10 pm
STL
-
YOW
5h 15m
1 stop
Air Canada Logo
9:00 am - 2:04 pm
YOW
-
STL
6h 04m
1 stop
$488Air Canada
Thu, Aug 6 - Thu, Aug 13
United Airlines Logo
8:00 am - 1:59 pm
STL
-
YOW
4h 59m
1 stop
United Airlines Logo
6:00 am - 2:57 pm
YOW
-
STL
9h 57m
2 stops
$497United Airlines
Mon, Aug 31 - Wed, Sep 2
American Airlines Logo
2:51 pm - 2:55 pm
SPI
-
YOW
23h 04m
2 stops
American Airlines Logo
8:40 am - 12:12 am
YOW
-
SPI
16h 32m
2 stops
$956American Airlines
Sat, Aug 8 - Sat, Aug 15
American Airlines Logo
2:51 pm - 2:55 pm
SPI
-
YOW
23h 04m
3 stops
American Airlines Logo
7:00 am - 12:12 am
YOW
-
SPI
18h 12m
3 stops
$957American Airlines
Sat, Aug 8 - Sat, Aug 15

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Air Canada flights from Illinois to Ottawa

Our best Air Canada deals on Illinois to Ottawa flight tickets
Air Canada
Aug 6
STL8:55 amLambert-St Louis
5h 15m
1 stop
YOW3:10 pmOttawa
Aug 13
YOW9:00 amOttawa
6h 04m
1 stop
STL2:04 pmLambert-St Louis
$488
Air Canada
Aug 31
STL12:59 pmLambert-St Louis
8h 11m
2 stops
YOW10:10 pmOttawa
Sep 2
YOW9:00 amOttawa
6h 02m
1 stop
STL2:02 pmLambert-St Louis
$580
Air Canada
Aug 31
STL12:59 pmLambert-St Louis
7h 36m
1 stop
YOW9:35 pmOttawa
Sep 2
YOW6:00 amOttawa
9h 57m
2 stops
STL2:57 pmLambert-St Louis
$582

Delta flights from Illinois to Ottawa

Our best Delta deals on Illinois to Ottawa flight tickets
Delta
Jul 31
STL7:08 amLambert-St Louis
16h 12m
2 stops
YOW12:20 amOttawa
Aug 2
YOW6:55 amOttawa
11h 24m
2 stops
STL5:19 pmLambert-St Louis
$676
Delta
Jul 31
STL7:08 amLambert-St Louis
16h 12m
2 stops
YOW12:20 amOttawa
Aug 2
YOW6:55 amOttawa
11h 24m
2 stops
STL5:19 pmLambert-St Louis
$704
Delta
Jul 31
STL7:08 amLambert-St Louis
16h 12m
2 stops
YOW12:20 amOttawa
Aug 2
YOW6:55 amOttawa
11h 24m
2 stops
STL5:19 pmLambert-St Louis
$741

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 June 24, 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

Cheapest round-trip

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 9/5

7:00 am-12:54 pm

1 stop4h 54m

Ottawa

Sat 9/5

6:25 pm-11:00 am

1 stop17h 35m

$365

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 9/4

7:00 am-5:35 pm

1 stop9h 35m

Ottawa

Sat 9/5

6:25 pm-11:00 am

1 stop17h 35m

$393

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 9/3

3:20 pm-12:20 am

1 stop8h 00m

Ottawa

Sat 9/5

6:25 pm-11:00 am

1 stop17h 35m

$401
Quickest round-trip

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 9/5

7:00 am-12:54 pm

1 stop4h 54m

Ottawa

Tue 9/8

10:40 am-2:35 pm

1 stop4h 55m

$406

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 8/14

3:15 pm-12:54 pm

1 stop20h 39m

Ottawa

Mon 8/17

8:45 pm-9:45 am

1 stop14h 00m

$427

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 8/31

8:00 am-9:35 pm

1 stop12h 35m

Ottawa

Wed 9/2

5:20 pm-10:00 pm

1 stop5h 40m

$487

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 8/6

8:55 am-3:10 pm

1 stop5h 15m

Ottawa

Thu 8/13

9:00 am-2:04 pm

1 stop6h 04m

$488

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 8/31

8:00 am-1:59 pm

1 stop4h 59m

Ottawa

Wed 9/2

6:00 am-2:57 pm

2 stops9h 57m

$497

SpringfieldOttawa

SPI - YOW

SPIYOW

Springfield Capital

Sat 8/8

2:51 pm-2:55 pm

2 stops23h 04m

Ottawa

Sat 8/15

8:40 am-12:12 am

2 stops16h 32m

$956

SpringfieldOttawa

SPI - YOW

SPIYOW

Springfield Capital

Sat 8/8

2:51 pm-2:55 pm

3 stops23h 04m

Ottawa

Sat 8/15

7:00 am-12:12 am

3 stops18h 12m

$957

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, September 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 $161. The month of October is another great option to travel to Ottawa, with average flight prices from Illinois averaging around $174.

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 $499. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Monday is $891.

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

In the afternoon is the cheapest time of day to fly from Illinois to Ottawa when you can find flight prices for as low as $531. Flying to Ottawa in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $726 on average. Flights to Ottawa from Illinois at noon 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

$465

Fastest flight time

2h 12m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Illinois in the past 72 hours is $465. The best round-trip flight deal from Illinois to Ottawa found on momondo in the last 72 hours is $522.
The fastest flight from Illinois to Ottawa takes 2h 12m
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

Frequently asked questions about flying from Illinois to Ottawa

  • 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
United AirlinesPriceFrom $400Free CancellationRating
7.4
9,881 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
Brockville
Petawawa
Smiths Falls
Perth
Calabogie
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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