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$316+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Green Bay to Ontario

Keep the following information in mind while searching for Green Bay to Ontario flight deals. Data was last updated July 31, 2025.

Round-trip from

$488
(American Airlines)

One-way from

$316
(United Airlines)
From Green Bay Austin-Straubel to Ontario
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One-way flight from Green Bay Austin-Straubel to Ontario
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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 July 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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.
Mon 9/226:26 pmGRB - YYZ
1 stop17h 06mAmerican Airlines
Sat 9/275:17 pmYYZ - GRB
2 stops17h 01mAmerican Airlines
Deal found 7/29$488
This United deal was found by Cheapflights users on 7/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:15 amGRB - YUL
1 stop8h 42mMultiple Airlines
Sun 11/236:00 amYUL - GRB
1 stop16h 38mMultiple Airlines
Deal found 7/30$533
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 8/225:30 pmGRB - YYZ
1 stop15h 28mUnited Airlines
Tue 8/265:15 pmYYZ - GRB
1 stop17h 50mUnited Airlines
Deal found 7/29$573
This American Airlines deal was found by Cheapflights users on 7/29. 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 9/304:35 pmGRB - YUL
2 stops16h 23mAmerican Airlines
Fri 10/35:15 pmYUL - GRB
1 stop18h 26mAmerican Airlines
Deal found 7/29$589
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 9/135:30 pmGRB - YUL
1 stop19h 24mUnited Airlines
Sat 9/209:45 amYUL - GRB
1 stop12h 58mUnited Airlines
Deal found 7/30$619
This Delta deal was found by Cheapflights users on 7/30. 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.
Tue 10/144:16 pmGRB - YYZ
2 stops16h 13mDelta
Sat 10/186:09 pmYYZ - GRB
1 stop3h 28mDelta
Deal found 7/30$638
This lastminute.com deal was found by Cheapflights users on 7/31. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/67:02 amGRB - YYZ
1 stop3h 18mWestJet
Sat 9/136:00 amYYZ - GRB
1 stop6h 23mWestJet
Deal found 7/31$651
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 9/135:30 pmGRB - YOW
1 stop19h 34mUnited Airlines
Sat 9/2010:37 amYOW - GRB
1 stop10h 13mUnited Airlines
Deal found 7/30$709
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:02 amGRB - YUL
2 stops16h 25mWestJet
Sat 8/166:45 amYUL - GRB
2 stops16h 49mWestJet
Deal found 7/30$776
This Delta deal was found by Cheapflights users on 7/30. 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.
Tue 12/3011:04 amGRB - YUL
2 stops11h 55mDelta
Sun 1/46:45 amYUL - GRB
2 stops10h 27mDelta
Deal found 7/30$883

Cheapflights Fare Finder

 
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 July 31, 2025.
Use the filters below to find and compare flights from Green Bay to Ontario that are best for you.

Fly from

Green Bay

Fly to

Ontario

Route

Depart

Return

Price

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Mon 9/22

6:26 pm-12:32 pm

1 stop17h 06m

Toronto Pearson Intl

Sat 9/27

5:17 pm-9:18 am

2 stops17h 01m

$488

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 8/22

5:30 pm-9:58 am

1 stop15h 28m

Toronto Pearson Intl

Tue 8/26

5:15 pm-10:05 am

1 stop17h 50m

$573

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Tue 9/30

4:35 pm-9:58 am

2 stops16h 23m

Montreal Pierre Elliott Trudeau Intl

Fri 10/3

5:15 pm-10:41 am

1 stop18h 26m

$589

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 9/13

5:30 pm-1:54 pm

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

Sat 9/20

9:45 am-9:43 pm

1 stop12h 58m

$619

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 10/14

4:16 pm-9:29 am

2 stops16h 13m

Toronto Pearson Intl

Sat 10/18

6:09 pm-8:37 pm

1 stop3h 28m

$638

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Sat 9/6

7:02 am-11:20 am

1 stop3h 18m

Toronto Pearson Intl

Sat 9/13

6:00 am-11:23 am

1 stop6h 23m

$651

Green BayOttawa

GRB - YOW

GRBYOW

Green Bay Austin-Straubel

Sat 9/13

5:30 pm-2:04 pm

1 stop19h 34m

Ottawa

Sat 9/20

10:37 am-7:50 pm

1 stop10h 13m

$709

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 8/14

7:02 am-12:27 am

2 stops16h 25m

Montreal Pierre Elliott Trudeau Intl

Sat 8/16

6:45 am-10:34 pm

2 stops16h 49m

$776

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 8/26

5:30 pm-10:04 am

2 stops15h 34m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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.

Cheapflights Insights

Everything you need to know about your flight from Green Bay to Ontario
No data available for this route at this time. Please check back soon.

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 July 31, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Green Bay to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,978 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 - Montreal Pierre Elliott Trudeau Intl, Green Bay Austin-Straubel - Toronto Pearson Intl or Green Bay Austin-Straubel - Ottawa 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 August is currently the most expensive (average of $348). 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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