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Cheap flights from Illinois to Ottawa from $197

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 6/9. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:15 am - 3:59 pm
MDW
-
YOW
4h 44m
1 stop
Multiple Airlines Logo
6:55 am - 2:35 pm
YOW
-
MDW
8h 40m
1 stop
$401Multiple Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
10:30 am - 9:44 pm
MDW
-
YOW
10h 14m
1 stop
Multiple Airlines Logo
6:55 am - 2:35 pm
YOW
-
MDW
8h 40m
1 stop
$403Multiple Airlines
Sun, May 31 - Sun, Jun 7
Multiple Airlines Logo
10:15 am - 12:20 am
MDW
-
YOW
13h 05m
1 stop
Multiple Airlines Logo
6:55 am - 9:35 am
YOW
-
MDW
27h 40m
1 stop
$407Multiple Airlines
Wed, Jun 3 - Wed, Jun 10
Porter Airlines Logo
10:15 am - 2:54 pm
MDW
-
YOW
3h 39m
1 stop
Porter Airlines Logo
11:00 am - 2:35 pm
YOW
-
MDW
4h 35m
1 stop
$408Porter Airlines
Sun, Jun 7 - Mon, Jun 15
Multiple Airlines Logo
7:25 am - 8:04 pm
ORD
-
YOW
11h 39m
1 stop
Multiple Airlines Logo
7:00 am - 1:10 pm
YOW
-
ORD
7h 10m
1 stop
$411Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Air Canada Logo
2:15 pm - 9:16 pm
STL
-
YOW
6h 01m
1 stop
Air Canada Logo
2:40 pm - 8:25 pm
YOW
-
STL
6h 45m
1 stop
$421Air Canada
Tue, Jun 2 - Wed, Jun 3
Porter Airlines Logo
3:20 pm - 12:54 pm
MDW
-
YOW
20h 34m
1 stop
Porter Airlines Logo
8:40 am - 9:35 am
YOW
-
MDW
25h 55m
1 stop
$423Porter Airlines
Thu, Jun 4 - Sun, Jun 7
United Airlines Logo
6:00 am - 5:07 pm
STL
-
YOW
10h 07m
1 stop
United Airlines Logo
5:50 pm - 11:44 pm
YOW
-
STL
6h 54m
1 stop
$424United Airlines
Sun, Jul 26 - Thu, Jul 30
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
Air Canada Logo
7:00 am - 12:06 pm
YOW
-
STL
6h 06m
1 stop
$426Air Canada
Thu, May 21 - Mon, May 25
United Airlines Logo
6:00 am - 1:59 pm
STL
-
YOW
6h 59m
1 stop
United Airlines Logo
6:00 am - 9:26 pm
YOW
-
STL
16h 26m
2 stops
$434United Airlines
Sun, Jul 26 - Thu, Jul 30

Air Canada flights from Illinois to Ottawa

Our best Air Canada deals on Illinois to Ottawa flight tickets
Air Canada
Jun 2
STL2:15 pmLambert-St Louis
6h 01m
1 stop
YOW9:16 pmOttawa
Jun 3
YOW2:40 pmOttawa
6h 45m
1 stop
STL8:25 pmLambert-St Louis
$421
Air Canada
May 21
STL7:05 amLambert-St Louis
5h 00m
1 stop
YOW1:05 pmOttawa
May 25
YOW7:00 amOttawa
6h 06m
1 stop
STL12:06 pmLambert-St Louis
$426
Air Canada
Jun 15
STL1:05 pmLambert-St Louis
7h 06m
1 stop
YOW9:11 pmOttawa
Jun 17
YOW3:00 pmOttawa
6h 25m
1 stop
STL8:25 pmLambert-St Louis
$444

United Airlines flights from Illinois to Ottawa

Our best United Airlines deals on Illinois to Ottawa flight tickets
United Airlines
Jul 26
STL6:00 amLambert-St Louis
10h 07m
1 stop
YOW5:07 pmOttawa
Jul 30
YOW5:50 pmOttawa
6h 54m
1 stop
STL11:44 pmLambert-St Louis
$424
United Airlines
Jul 26
STL6:00 amLambert-St Louis
6h 59m
1 stop
YOW1:59 pmOttawa
Jul 30
YOW6:00 amOttawa
16h 26m
2 stops
STL9:26 pmLambert-St Louis
$434
United Airlines
Oct 13
STL8:00 amLambert-St Louis
4h 45m
1 stop
YOW1:45 pmOttawa
Oct 17
YOW6:00 amOttawa
6h 03m
1 stop
STL11:03 amLambert-St Louis
$445

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 May 8, 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

MDW - YOW

MDWYOW

Chicago Midway

Mon 6/1

10:15 am-3:59 pm

1 stop4h 44m

Ottawa

Mon 6/8

6:55 am-2:35 pm

1 stop8h 40m

$401

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sun 5/31

10:30 am-9:44 pm

1 stop10h 14m

Ottawa

Sun 6/7

6:55 am-2:35 pm

1 stop8h 40m

$403

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 6/3

10:15 am-12:20 am

1 stop13h 05m

Ottawa

Wed 6/10

6:55 am-9:35 am

1 stop27h 40m

$407
Quickest round-trip

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sun 6/7

10:15 am-2:54 pm

1 stop3h 39m

Ottawa

Mon 6/15

11:00 am-2:35 pm

1 stop4h 35m

$408

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 6/4

7:25 am-8:04 pm

1 stop11h 39m

Ottawa

Sun 6/7

7:00 am-1:10 pm

1 stop7h 10m

$411

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 6/2

2:15 pm-9:16 pm

1 stop6h 01m

Ottawa

Wed 6/3

2:40 pm-8:25 pm

1 stop6h 45m

$421

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 6/4

3:20 pm-12:54 pm

1 stop20h 34m

Ottawa

Sun 6/7

8:40 am-9:35 am

1 stop25h 55m

$423

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 7/26

6:00 am-5:07 pm

1 stop10h 07m

Ottawa

Thu 7/30

5:50 pm-11:44 pm

1 stop6h 54m

$424

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 5/21

7:05 am-1:05 pm

1 stop5h 00m

Ottawa

Mon 5/25

7:00 am-12:06 pm

1 stop6h 06m

$426

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 7/26

6:00 am-1:59 pm

1 stop6h 59m

Ottawa

Thu 7/30

6:00 am-9:26 pm

2 stops16h 26m

$434

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, June 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 $127. The month of September is another great option to travel to Ottawa, with average flight prices from Illinois averaging around $161.

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 $438. 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 $900.

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 $514. 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 $670 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

Can stopping save me money on Illinois to Ottawa flights?

You could potentially save up to 28% 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

$337

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 $337. The best round-trip flight deal from Illinois to Ottawa found on momondo in the last 72 hours is $553.
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
Air CanadaPriceFrom $181Free CancellationRating
7.1
11,002 reviews
Search Air Canada flights
United AirlinesPriceFrom $257Free CancellationRating
7.4
9,694 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
Petawawa
Smiths Falls
Brockville
Calabogie
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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