HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$251+ Cheap flights from Green Bay (GRB) to Ontario

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
janv. 26 — févr. 21
dim. 1/26
dim. 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay to Ontario with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Green Bay to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated janvier 21, 2025.

Round-trip from

$513
(Delta)

One-way from

$251
(Delta)
From Green Bay Austin-Straubel to Ontario
Search Deals
One-way flight from Green Bay Austin-Straubel to Ontario
Search Deals

Find flight deals from Green Bay to Ontario

Cheapest flights from Green Bay to Ontario
Explore the most affordable flight options available from Green Bay to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 21, 2025.

This Delta deal was found by Cheapflights users on 1/19. 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.
ven. 2/145:20 pmGRB - YYZ
1 stop4h 29mDelta
dim. 2/165:15 pmYYZ - GRB
1 stop5h 10mDelta
Deal found 1/19$513
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/410:50 amGRB - YYZ
1 stop9h 35mUnited Airlines
mar. 3/117:20 amYYZ - GRB
2 stops8h 44mUnited Airlines
Deal found 1/20$538
This American Airlines deal was found by Cheapflights users on 1/20. 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.
mar. 3/46:01 amGRB - YYZ
2 stops9h 43mAmerican Airlines
mar. 3/1110:55 amYYZ - GRB
2 stops8h 14mAmerican Airlines
Deal found 1/20$543
This American Airlines deal was found by Cheapflights users on 1/21. 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.
sam. 3/86:27 pmGRB - YUL
2 stops13h 43mAmerican Airlines
sam. 3/155:40 pmYUL - GRB
2 stops18h 25mAmerican Airlines
Deal found 1/21$611
This Justfly.com deal was found by Cheapflights users on 1/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 5/244:00 pmGRB - YYZ
1 stop18h 32mWestJet
mer. 5/286:08 pmYYZ - GRB
1 stop3h 28mWestJet
Deal found 1/21$635
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 3/85:25 pmGRB - YUL
2 stops17h 25mUnited Airlines
sam. 3/151:10 pmYUL - GRB
1 stop4h 32mUnited Airlines
Deal found 1/21$649
This Justfly.com deal was found by Cheapflights users on 1/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 5/244:00 pmGRB - YUL
1 stop6h 24mWestJet
mer. 5/287:30 amYUL - GRB
1 stop4h 40mWestJet
Deal found 1/21$703
This Delta deal was found by Cheapflights users on 1/21. 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.
sam. 5/244:00 pmGRB - YUL
1 stop6h 24mDelta
mer. 5/2811:15 amYUL - GRB
2 stops11h 42mDelta
Deal found 1/21$730

Find flights from Green Bay to Ontario within your budget

Customize your flight search to find flights from Green Bay to Ontario 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 janvier 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

ven. 2/14

5:20 pm-10:49 pm

1 stop4h 29m

Toronto Pearson Intl

dim. 2/16

5:15 pm-9:25 pm

1 stop5h 10m

$513

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mar. 3/4

10:50 am-9:25 pm

1 stop9h 35m

Toronto Pearson Intl

mar. 3/11

7:20 am-3:04 pm

2 stops8h 44m

$538

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mar. 3/4

6:01 am-4:44 pm

2 stops9h 43m

Toronto Pearson Intl

mar. 3/11

10:55 am-6:09 pm

2 stops8h 14m

$543

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

sam. 3/8

6:27 pm-9:10 am

2 stops13h 43m

Montreal Pierre Elliott Trudeau Intl

sam. 3/15

5:40 pm-11:05 am

2 stops18h 25m

$611

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

sam. 5/24

4:00 pm-11:32 am

1 stop18h 32m

Toronto Pearson Intl

mer. 5/28

6:08 pm-8:36 pm

1 stop3h 28m

$635

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

sam. 3/8

5:25 pm-11:50 am

2 stops17h 25m

Montreal Pierre Elliott Trudeau Intl

sam. 3/15

1:10 pm-4:42 pm

1 stop4h 32m

$649

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

sam. 5/24

4:00 pm-11:24 pm

1 stop6h 24m

Montreal Pierre Elliott Trudeau Intl

mer. 5/28

7:30 am-11:10 am

1 stop4h 40m

$703

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

sam. 5/24

4:00 pm-11:24 pm

1 stop6h 24m

Montreal Pierre Elliott Trudeau Intl

mer. 5/28

11:15 am-9:57 pm

2 stops11h 42m

$730

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

mer. 4/23

5:10 pm-11:24 pm

1 stop5h 14m

$251

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

mer. 4/23

6:45 am-3:49 pm

2 stops8h 04m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Best time to book a flight from Green Bay to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Green Bay 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.

Travel insights for flights from Green Bay to Ontario

Get recent, data-driven insights about flights from Green Bay to Ontario including ideal travel times, pricing trends, and more.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated janvier 21, 2025.
Peruse reviews from past customers who have flown with WestJet, Delta and United Airlines from Green Bay to Ontario to help guide your decision. 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.
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet
7.2
Good
2,829 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Green Bay to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Green Bay to Ontario?

    Located just 5.9 mi from the city center, Green Bay Austin-Straubel (GRB) is the airport most travelers will use when flying to Ontario from Green Bay.

  • What are the most popular routes from Green Bay to Region of Ontario?

    When deciding which route to take from Green Bay to Region of Ontario consider Green Bay Austin-Straubel - Toronto Pearson Intl, Green Bay Austin-Straubel - Ottawa or Green Bay Austin-Straubel - Montreal Pierre Elliott Trudeau Intl as they are the most popular.

  • Can I find deals for flights from Green Bay to Ontario that include hotel bookings?

    Yes. In addition to deals on Green Bay to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Green Bay to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Green Bay to Ontario.

  • Can I find deals for business class flights from Green Bay to Ontario?

    Yes. Cheapflights offers flight deals from Green Bay to Ontario 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 Green Bay to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Green Bay to Region of Ontario (average of $243). Flying from Green Bay to Region of Ontario in July is currently the most expensive (average of $359). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Green Bay to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Vancouver Intl flights
O'Hare Intl to Pearson Intl flights
Minneapolis to Vancouver Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Calgary flights
Minneapolis to Calgary flights
Minneapolis to Pierre Elliott Trudeau Intl flights
Minneapolis to Pearson Intl flights
O'Hare Intl to Abbotsford flights
O'Hare Intl to Toronto Island flights
Milwaukee to Vancouver Intl flights
Minneapolis to Abbotsford flights
O'Hare Intl to Québec City flights
O'Hare Intl to Ottawa flights
Minneapolis to Winnipeg flights
Minneapolis to Toronto Island flights
Madison to Vancouver Intl flights
O'Hare Intl to Halifax flights
Madison to Pearson Intl flights
O'Hare Intl to Edmonton flights
Milwaukee to Pearson Intl flights
Minneapolis to Edmonton flights
Milwaukee to Abbotsford flights
Minneapolis to Kelowna flights
Minneapolis to Victoria flights
Minneapolis to Québec City flights
O'Hare Intl to Winnipeg flights
O'Hare Intl to Victoria flights
Milwaukee to Pierre Elliott Trudeau Intl flights
Milwaukee to Calgary flights
Minneapolis to Halifax flights
O'Hare Intl to Kelowna flights
Madison to Pierre Elliott Trudeau Intl flights
Madison to Abbotsford flights
Green Bay to Pearson Intl flights
Minneapolis to Charlottetown flights
O'Hare Intl to St. John's flights
Milwaukee to Québec City flights
Madison to Calgary flights
Minneapolis to Ottawa flights
O'Hare Intl to Charlottetown flights
Milwaukee to Victoria flights
Milwaukee to Winnipeg flights
Minneapolis to Hamilton flights
Minneapolis to St. John's flights
Appleton to Pierre Elliott Trudeau Intl flights
Appleton to Pearson Intl flights
Green Bay to Ottawa flights
O'Hare Intl to Fredericton flights
Milwaukee to Halifax flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.