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$363+ Cheap flights from Green Bay (GRB) to Ontario

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
ene. 16 — ene. 231
vie. 1/16
vie. 1/23
1 adult, Economy
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Cheap flight deals from Green Bay to Ontario

Best flights from Green Bay to Ontario
Discover carefully curated flight deals from Green Bay to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 17, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. 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.
sáb. 1/314:53 pmGRB - YYZ
1 stop18h 41mAmerican Airlines
sáb. 2/77:04 pmYYZ - GRB
1 stop16h 46mAmerican Airlines
Deal found 12/17$363
This United Airlines deal was found by Cheapflights users on 12/15. 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.
sáb. 1/172:39 pmGRB - YOW
1 stop5h 39mUnited Airlines
mar. 1/205:11 pmYOW - GRB
1 stop5h 20mUnited Airlines
Deal found 12/15$363
This United Airlines deal was found by Cheapflights users on 12/15. 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.
sáb. 1/103:42 pmGRB - YYZ
1 stop7h 17mUnited Airlines
mié. 1/149:00 amYYZ - GRB
1 stop8h 47mUnited Airlines
Deal found 12/15$552
This American Airlines deal was found by Cheapflights users on 12/17. 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. 1/136:00 amGRB - YYZ
2 stops14h 44mAmerican Airlines
dom. 1/187:30 amYYZ - GRB
2 stops15h 42mAmerican Airlines
Deal found 12/17$593
This United Airlines deal was found by Cheapflights users on 12/17. 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. 1/132:39 pmGRB - YYZ
1 stop8h 20mUnited Airlines
dom. 1/189:00 amYYZ - GRB
1 stop8h 47mUnited Airlines
Deal found 12/17$562
This United Airlines deal was found by Cheapflights users on 12/16. 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.
vie. 1/235:24 pmGRB - YUL
1 stop19h 36mUnited Airlines
lun. 1/264:45 pmYUL - GRB
1 stop22h 17mUnited Airlines
Deal found 12/16$626

Find 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 diciembre 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$363
(United Airlines)
Provider with most accurate pricing for Green Bay Austin-Straubel-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Toronto (YTO) flights.
Search Deals
From Green Bay Austin-Straubel to Ontario
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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 diciembre 17, 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

sáb. 1/31

4:53 pm-12:34 pm

1 stop18h 41m

Toronto Pearson Intl

sáb. 2/7

7:04 pm-10:50 am

1 stop16h 46m

$363

Green BayOttawa

GRB - YOW

GRBYOW

Green Bay Austin-Straubel

sáb. 1/17

2:39 pm-9:18 pm

1 stop5h 39m

Ottawa

mar. 1/20

5:11 pm-9:31 pm

1 stop5h 20m

$363

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

sáb. 1/10

3:42 pm-11:59 pm

1 stop7h 17m

Toronto Pearson Intl

mié. 1/14

9:00 am-4:47 pm

1 stop8h 47m

$552

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mar. 1/13

2:39 pm-11:59 pm

1 stop8h 20m

Toronto Pearson Intl

dom. 1/18

9:00 am-4:47 pm

1 stop8h 47m

$562

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mar. 1/13

6:00 am-9:44 pm

2 stops14h 44m

Toronto Pearson Intl

dom. 1/18

7:30 am-10:12 pm

2 stops15h 42m

$593

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

vie. 1/23

5:24 pm-2:00 pm

1 stop19h 36m

Montreal Pierre Elliott Trudeau Intl

lun. 1/26

4:45 pm-2:02 pm

1 stop22h 17m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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.

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.

  • How long is the flight from Green Bay to Region of Ontario?

    For as low as $363, American Airlines can have you in Region of Ontario from Green Bay in 5h 39m. Green Bay and Region of Ontario are separated by a distance of 611 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 - Ottawa or Green Bay Austin-Straubel - Toronto Pearson 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.

See more FAQs

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