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Niagara-on-the-Lake

$77+ Cheap flights from Chicago (CHI) to Niagara-on-the-Lake, Canada

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Niagara-on-the-Lake are usually found in June or July, booked 68 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Chicago to Niagara-on-the-Lake

Keep the following information in mind while searching for Chicago to Niagara-on-the-Lake flight deals. Data was last updated October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$184
(American Airlines)

One-way from

$77
(American Airlines)

Popular in

December

Cheapest in

June

Average price

$295
Provider with most accurate pricing for Chicago (CHI)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Toronto (YTO) flights.
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From Chicago (CHI) to Niagara-on-the-Lake
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One-way flight from Chicago (CHI) to Niagara-on-the-Lake
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Highest demand for flights based on searches. 8% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Chicago to Niagara-on-the-Lake

Cheapest flights from Chicago to Niagara-on-the-Lake
Explore the most affordable flight options available from Chicago to Niagara-on-the-Lake. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:34 pmORD - YYZ
Nonstop1h 55mAmerican Airlines
Fri 12/124:44 pmYYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 10/22$184
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:06 amORD - YYZ
1 stop4h 48mAmerican Airlines
Fri 12/56:00 amYYZ - ORD
Nonstop2h 15mAmerican Airlines
Deal found 10/23$194
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:39 amORD - YYZ
Nonstop1h 51mAmerican Airlines
Sun 12/76:00 amYYZ - ORD
1 stop6h 03mAmerican Airlines
Deal found 10/23$200
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:20 amORD - YYZ
1 stop6h 37mAmerican Airlines
Sun 11/236:00 amYYZ - ORD
1 stop5h 42mAmerican Airlines
Deal found 10/23$209
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:04 amORD - YYZ
1 stop4h 52mAmerican Airlines
Sat 12/134:44 pmYYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 10/21$212
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:16 pmORD - YYZ
Nonstop1h 47mAmerican Airlines
Fri 12/126:24 pmYYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 10/21$213
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:00 amORD - YYZ
1 stop5h 14mAmerican Airlines
Wed 11/196:00 amYYZ - ORD
Nonstop2h 15mAmerican Airlines
Deal found 10/23$217
This American Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:10 amORD - YYZ
Nonstop1h 46mAmerican Airlines
Sun 12/145:16 pmYYZ - ORD
1 stop5h 03mAmerican Airlines
Deal found 10/23$218
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:00 amORD - YYZ
1 stop5h 03mAmerican Airlines
Fri 11/145:15 pmYYZ - ORD
1 stop5h 08mAmerican Airlines
Deal found 10/21$228
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/229:32 amMDW - YYZ
1 stop6h 43mDelta
Fri 11/286:05 amYYZ - MDW
1 stop3h 49mDelta
Deal found 10/22$233
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:34 amMDW - YYZ
1 stop4h 14mDelta
Sun 12/76:05 amYYZ - MDW
1 stop7h 29mDelta
Deal found 10/21$241
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:37 pmMDW - YYZ
1 stop28h 34mMultiple Airlines
Sun 12/148:00 pmYYZ - MDW
1 stop26h 58mMultiple Airlines
Deal found 10/23$256

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Niagara-on-the-Lake 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, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Chicago to Niagara-on-the-Lake that are best for you.

Fly from

Chicago

Fly to

Niagara-on-the-Lake

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 12/9

6:22 am-3:10 pm

1 stop7h 48m

Toronto Pearson Intl

Wed 12/10

1:47 pm-6:23 pm

1 stop5h 36m

$209

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 11/21

6:45 am-2:48 pm

1 stop7h 03m

Toronto Pearson Intl

Thu 11/27

6:05 am-1:55 pm

1 stop8h 50m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 12/4

6:00 am-4:15 pm

1 stop9h 15m

Toronto Pearson Intl

Sun 12/7

6:30 am-11:40 am

1 stop6h 10m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 12/3

7:00 am-1:19 pm

1 stop5h 19m

Toronto Pearson Intl

Sun 12/7

12:13 pm-6:27 pm

1 stop7h 14m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 11/22

10:46 am-5:15 pm

1 stop5h 29m

Toronto Pearson Intl

Wed 11/26

12:08 pm-4:24 pm

1 stop5h 16m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 11/21

6:45 am-2:48 pm

1 stop7h 03m

Toronto Pearson Intl

Sun 11/23

6:05 am-10:01 am

1 stop4h 56m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 12/12

6:00 am-4:15 pm

1 stop9h 15m

Toronto Pearson Intl

Sun 12/14

3:38 pm-6:27 pm

1 stop3h 49m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 12/5

5:42 pm-11:27 pm

1 stop4h 45m

Toronto Pearson Intl

Fri 12/12

3:38 pm-6:27 pm

1 stop3h 49m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 11/25

7:00 am-1:20 pm

1 stop5h 20m

Toronto Pearson Intl

Thu 11/27

6:30 am-3:02 pm

1 stop9h 32m

$233

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 11/26

10:46 am-5:15 pm

1 stop5h 29m

Toronto Pearson Intl

Wed 12/3

6:05 am-10:00 am

1 stop4h 55m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 43 results
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Best time to book a flight from Chicago to Niagara-on-the-Lake

Have a flexible travel schedule? Discover the best time to fly to Niagara-on-the-Lake from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Niagara-on-the-Lake

How far ahead should I book a flight from Chicago to Niagara-on-the-Lake?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Niagara-on-the-Lake. Price data was last updated on October 17, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to Niagara-on-the-Lake, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to Niagara-on-the-Lake?

Currently, March is the cheapest month in which you can book a flight from Chicago to Niagara-on-the-Lake (average of $106). Flying from Chicago to Niagara-on-the-Lake in July is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to N1A?

Find hourly flight availability from Chicago to Niagara-on-the-Lake. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2025.

It’s typically best to fly out from Chicago to Niagara-on-the-Lake in the morning. Doing so could potentially save you 25% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Chicago to Niagara-on-the-Lake?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Niagara-on-the-Lake. Price data was last updated on October 19, 2025.

Travelers seeking maximum savings on their Chicago to Niagara-on-the-Lake flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Niagara-on-the-Lake

Explore weekly flight availability from Chicago to Niagara-on-the-Lake. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 23, 2025.

The most flights from CHI to N1A are scheduled on a Thursday (63 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from Chicago to Niagara-on-the-Lake?

Reviews of airlines servicing Niagara-on-the-Lake

Get insights into the airlines that provide service to Niagara-on-the-Lake. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Niagara-on-the-Lake. Reviews last updated October 23, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Air Canada from Chicago to Niagara-on-the-Lake. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,991 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,028 reviews
United Airlines
7.4
Good
8,991 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Air Canada
7.1
Good
10,346 reviews
United Airlines
7.4
Good
8,991 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Niagara-on-the-Lake. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Niagara-on-the-Lake?

    Departing from Chicago to Niagara-on-the-Lake will take you 7h 03m. Airlines will cover a distance of 436 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most reliable airlines from Chicago to Niagara-on-the-Lake?

    Consider Finnair (92%), Qatar Airways (91%) or British Airways (89%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Niagara-on-the-Lake.

  • What are the cheapest flights from Chicago to Niagara-on-the-Lake?

    Looking for the cheapest flight from Chicago to Niagara-on-the-Lake? While on average our users pay $762, our data indicates the cheapest price to be $122. The most popular route (Chicago O'Hare Intl - Toronto Pearson Intl), is priced around $166.

  • Can I find deals for flights from Chicago to Niagara-on-the-Lake that include hotel bookings?

    Yes. In addition to deals on Chicago to Niagara-on-the-Lake flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Niagara-on-the-Lake?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Niagara-on-the-Lake.

  • Can I find deals for business class flights from Chicago to Niagara-on-the-Lake?

    Yes. Cheapflights offers flight deals from Chicago to Niagara-on-the-Lake by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Niagara-on-the-Lake?

    Currently, March is the cheapest month in which you can book a flight from Chicago to Niagara-on-the-Lake (average of $106). Flying from Chicago to Niagara-on-the-Lake in July is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chicago to Niagara-on-the-Lake

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Midway to Toronto Island flights
O'Hare Intl to Toronto Island flights
Midway to Pearson Intl flights
Midway to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Ottawa flights
St. Louis to Pearson Intl flights
St. Louis to Pierre Elliott Trudeau Intl flights
Midway to Ottawa flights
O'Hare Intl to Hamilton flights
Moline to Pearson Intl flights
St. Louis to Ottawa flights
O'Hare Intl to London flights
O'Hare Intl to Thunder Bay flights
Evansville to Pearson Intl flights
Champaign to Pearson Intl flights
Midway to Thunder Bay flights
Peoria to Pierre Elliott Trudeau Intl flights
Evansville to Pierre Elliott Trudeau Intl flights
Dubuque to Pearson Intl flights
Bloomington to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Kingston flights
Bloomington to Ottawa flights
Springfield to Pearson Intl flights

Top 4 airlines flying from Chicago to Niagara-on-the-Lake

Discover the top 4 airlines that operate flights from Chicago to Niagara-on-the-Lake. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$109Average$270FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$117Average$266FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$146Average$309FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$231Average$390FlexibilityNo cancel feeOn-time71%

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