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$294+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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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 octubre 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/28. 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.
jue. 11/2712:00 pmGRB - YUL
2 stops24h 49mAmerican Airlines
mié. 12/33:50 pmYUL - GRB
1 stop18h 23mAmerican Airlines
Deal found 10/28$500
This United Airlines deal was found by Cheapflights users on 10/28. 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.
lun. 12/228:00 amGRB - YYZ
1 stop13h 54mUnited Airlines
vie. 1/212:05 pmYYZ - GRB
1 stop7h 57mUnited Airlines
Deal found 10/28$506
This Delta deal was found by Cheapflights users on 10/28. 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.
jue. 11/2712:20 pmGRB - YUL
2 stops20h 19mDelta
mié. 12/39:35 amYUL - GRB
2 stops14h 02mDelta
Deal found 10/28$521
This American Airlines deal was found by Cheapflights users on 10/29. 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.
dom. 11/167:52 pmGRB - YYZ
1 stop15h 40mAmerican Airlines
dom. 11/236:00 amYYZ - GRB
1 stop18h 28mAmerican Airlines
Deal found 10/29$530
This United Airlines deal was found by Cheapflights users on 10/28. 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.
lun. 12/228:00 amGRB - YYZ
1 stop13h 54mUnited Airlines
lun. 12/296:50 amYYZ - GRB
1 stop13h 12mUnited Airlines
Deal found 10/28$536
This American Airlines deal was found by Cheapflights users on 10/28. 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.
dom. 12/215:25 amGRB - YYZ
1 stop11h 15mAmerican Airlines
mié. 12/316:23 pmYYZ - GRB
1 stop16h 16mAmerican Airlines
Deal found 10/28$558
This American Airlines deal was found by Cheapflights users on 10/28. 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.
jue. 12/257:00 amGRB - YYZ
1 stop26h 56mAmerican Airlines
mié. 12/3110:54 amYYZ - GRB
2 stops11h 59mAmerican Airlines
Deal found 10/28$563
This American Airlines deal was found by Cheapflights users on 10/28. 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.
mié. 12/245:25 amGRB - YYZ
2 stops10h 14mAmerican Airlines
jue. 1/14:40 pmYYZ - GRB
1 stop7h 56mAmerican Airlines
Deal found 10/28$565
This United Airlines deal was found by Cheapflights users on 10/28. 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. 12/276:15 amGRB - YYZ
1 stop9h 24mUnited Airlines
jue. 1/19:00 amYYZ - GRB
1 stop13h 36mUnited Airlines
Deal found 10/28$581
This American Airlines deal was found by Cheapflights users on 10/28. 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. 12/2310:09 amGRB - YYZ
1 stop25h 23mAmerican Airlines
mié. 12/3110:54 amYYZ - GRB
2 stops11h 59mAmerican Airlines
Deal found 10/28$586
This United Airlines deal was found by Cheapflights users on 10/28. 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.
jue. 12/253:42 pmGRB - YYZ
2 stops7h 04mUnited Airlines
vie. 1/212:05 pmYYZ - GRB
1 stop7h 57mUnited Airlines
Deal found 10/28$598
This American Airlines deal was found by Cheapflights users on 10/28. 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.
lun. 12/225:18 pmGRB - YYZ
2 stops16h 51mAmerican Airlines
mar. 12/3010:30 amYYZ - GRB
2 stops14h 06mAmerican Airlines
Deal found 10/28$600

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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$487
(United Airlines)

One-way from

$294
(American 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
Search Deals
One-way flight 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 octubre 30, 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

mié. 12/24

6:15 am-6:34 pm

1 stop11h 19m

Toronto Pearson Intl

vie. 1/2

12:05 pm-9:36 pm

1 stop10h 31m

$506

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

jue. 12/25

8:00 am-10:54 pm

1 stop13h 54m

Toronto Pearson Intl

vie. 1/2

12:05 pm-7:02 pm

1 stop7h 57m

$506

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

vie. 12/26

6:15 am-10:54 pm

1 stop15h 39m

Toronto Pearson Intl

vie. 1/2

12:05 pm-9:36 pm

1 stop10h 31m

$506

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mié. 12/24

3:42 pm-11:59 pm

1 stop7h 17m

Toronto Pearson Intl

jue. 1/1

12:05 pm-7:03 pm

1 stop7h 58m

$506

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

vie. 12/26

8:00 am-10:54 pm

1 stop13h 54m

Toronto Pearson Intl

jue. 1/1

9:00 am-7:03 pm

1 stop11h 03m

$506

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

mar. 12/23

6:15 am-4:39 pm

1 stop9h 24m

Toronto Pearson Intl

jue. 1/1

12:05 pm-9:36 pm

1 stop10h 31m

$506

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

jue. 11/27

12:20 pm-9:39 am

2 stops20h 19m

Montreal Pierre Elliott Trudeau Intl

mié. 12/3

9:35 am-10:37 pm

2 stops14h 02m

$521

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

jue. 4/16

1:10 pm-4:05 pm

1 stop25h 55m

Montreal Pierre Elliott Trudeau Intl

lun. 4/20

9:25 am-10:35 am

1 stop26h 10m

$528

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

dom. 11/16

7:52 pm-12:32 pm

1 stop15h 40m

Toronto Pearson Intl

dom. 11/23

6:00 am-11:28 pm

1 stop18h 28m

$530

Green BayOttawa

GRB - YOW

GRBYOW

Green Bay Austin-Straubel

sáb. 3/28

3:44 pm-9:18 pm

1 stop4h 34m

Ottawa

mié. 4/1

6:52 am-10:35 am

1 stop4h 43m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 19 results
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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 $506, United Airlines can have you in Region of Ontario from Green Bay in 11h 19m. Green Bay and Region of Ontario are separated by a distance of 426 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 - 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.

See more FAQs

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