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$378+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$529
(Delta)

One-way from

$378
(United Airlines)
Provider with most accurate pricing for Green Bay Austin-Straubel-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Toronto (YTO) flights.
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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 February 22, 2025.

This Delta deal was found by Cheapflights users on 2/21. 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.
Tue 4/85:49 pmGRB - YYZ
1 stop3h 50mDelta
Tue 4/153:59 pmYYZ - GRB
1 stop5h 27mDelta
Deal found 2/21$529
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 4/86:45 amGRB - YYZ
2 stops6h 34mUnited Airlines
Tue 4/157:00 amYYZ - GRB
1 stop4h 15mUnited Airlines
Deal found 2/21$538
This American Airlines deal was found by Cheapflights users on 2/22. 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.
Wed 4/306:00 amGRB - YYZ
1 stop3h 50mAmerican Airlines
Sun 5/411:35 amYYZ - GRB
1 stop7h 35mAmerican Airlines
Deal found 2/22$551
This Delta deal was found by Cheapflights users on 2/21. 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.
Sat 5/2411:53 amGRB - YUL
2 stops10h 15mDelta
Wed 5/2811:15 amYUL - GRB
2 stops10h 21mDelta
Deal found 2/21$566
This American Airlines deal was found by Cheapflights users on 2/21. 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 4/256:40 pmGRB - YUL
1 stop16h 04mAmerican Airlines
Mon 4/285:30 pmYUL - GRB
2 stops18h 22mAmerican Airlines
Deal found 2/21$569
This Priceline deal was found by Cheapflights users on 2/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:49 pmGRB - YUL
1 stop4h 39mWestJet
Mon 4/284:50 pmYUL - GRB
1 stop4h 36mWestJet
Deal found 2/21$584
This United deal was found by Cheapflights users on 2/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:10 pmGRB - YUL
1 stop7h 19mUnited Airlines
Wed 5/286:15 amYUL - GRB
1 stop7h 07mUnited Airlines
Deal found 2/21$594
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 4/810:50 amGRB - YOW
1 stop5h 16mUnited Airlines
Tue 4/1510:37 amYOW - GRB
1 stop7h 13mUnited Airlines
Deal found 2/21$663
This Justfly.com deal was found by Cheapflights users on 2/21. 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.
Sat 3/14:17 pmGRB - YYZ
1 stop5h 50mWestJet
Mon 3/35:15 pmYYZ - GRB
1 stop18h 13mWestJet
Deal found 2/21$668
This United deal was found by Cheapflights users on 2/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/285:20 pmGRB - YOW
1 stop27h 04mMultiple Airlines
Sun 3/211:25 amYOW - GRB
1 stop4h 34mMultiple Airlines
Deal found 2/21$1,258

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 February 22, 2025.

Fly from

Green Bay

Fly to

Ontario

Route

Depart

Return

Price

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 4/8

5:49 pm-10:39 pm

1 stop3h 50m

Toronto Pearson Intl

Tue 4/15

3:59 pm-8:26 pm

1 stop5h 27m

$529

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 4/8

6:45 am-2:19 pm

2 stops6h 34m

Toronto Pearson Intl

Tue 4/15

7:00 am-10:15 am

1 stop4h 15m

$538

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Wed 4/30

6:00 am-10:50 am

1 stop3h 50m

Toronto Pearson Intl

Sun 5/4

11:35 am-6:10 pm

1 stop7h 35m

$551

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 5/24

11:53 am-11:08 pm

2 stops10h 15m

Montreal Pierre Elliott Trudeau Intl

Wed 5/28

11:15 am-8:36 pm

2 stops10h 21m

$566

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Fri 4/25

6:40 pm-11:44 am

1 stop16h 04m

Montreal Pierre Elliott Trudeau Intl

Mon 4/28

5:30 pm-10:52 am

2 stops18h 22m

$569

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Fri 4/25

5:49 pm-11:28 pm

1 stop4h 39m

Montreal Pierre Elliott Trudeau Intl

Mon 4/28

4:50 pm-8:26 pm

1 stop4h 36m

$584

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 5/24

1:10 pm-9:29 pm

1 stop7h 19m

Montreal Pierre Elliott Trudeau Intl

Wed 5/28

6:15 am-12:22 pm

1 stop7h 07m

$594

Green BayOttawa

GRB - YOW

GRBYOW

Green Bay Austin-Straubel

Tue 4/8

10:50 am-5:06 pm

1 stop5h 16m

Ottawa

Tue 4/15

10:37 am-4:50 pm

1 stop7h 13m

$663

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Fri 6/13

3:54 pm-1:55 pm

1 stop21h 01m

$378

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Fri 6/13

11:00 am-11:18 pm

2 stops11h 18m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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 February 22, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and American 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
8,203 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

Delta
8.0
Very good
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

United Airlines
7.4
Good
8,754 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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
8,203 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

WestJet
7.2
Good
2,800 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 - Montreal Pierre Elliott Trudeau 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 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

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Alternative routes for Green Bay to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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