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Cheap flights from Green Bay to Ontario from C$ 354

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
17 Jun — 24 Jun1
1 adult

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 12 June 2025.

Round-trip from

C$ 651

One-way from

C$ 354
United Airlines
  • United Airlines
  • 10/9-13/9
  • 2 total stops
  • 15h 53m total
  • Green Bay to Ontario
Search Deals
Delta
  • Delta
  • 24/9
  • 1 total stop
  • 4h 00m total
  • Green Bay 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 12 June 2025.

Wed 10/96:15 a.m.GRB - YYZ
1 stop7h 23mUnited Airlines
Sat 13/912:20 p.m.YYZ - GRB
1 stop8h 30mUnited Airlines
Deal found 11/6C$ 651
Fri 11/76:19 p.m.GRB - YYZ
1 stop15h 40mAmerican Airlines
Fri 18/76:24 p.m.YYZ - GRB
1 stop15h 57mAmerican Airlines
Deal found 11/6C$ 692
Tue 8/76:15 a.m.GRB - YUL
1 stop4h 25mAmerican Airlines
Thu 10/710:30 a.m.YUL - GRB
2 stops13h 59mAmerican Airlines
Deal found 10/6C$ 785
Tue 8/71:10 p.m.GRB - YUL
1 stop7h 19mUnited Airlines
Thu 10/76:15 a.m.YUL - GRB
1 stop4h 56mUnited Airlines
Deal found 10/6C$ 861
Fri 11/712:10 p.m.GRB - YYZ
3 stops21h 43mMultiple Airlines
Fri 18/77:40 a.m.YYZ - GRB
2 stops13h 55mMultiple Airlines
Deal found 11/6C$ 1,500

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 629,999 searches. Data last updated 12 June 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

Wed 10/9

6:15 a.m.-2:38 p.m.

1 stop7h 23m

Toronto Pearson Intl

Sat 13/9

12:20 p.m.-7:50 p.m.

1 stop8h 30m

C$ 651

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 11/7

6:19 p.m.-10:59 a.m.

1 stop15h 40m

Toronto Pearson Intl

Fri 18/7

6:24 p.m.-9:21 a.m.

1 stop15h 57m

C$ 692

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Tue 8/7

6:15 a.m.-11:40 a.m.

1 stop4h 25m

Montreal Pierre Elliott Trudeau Intl

Thu 10/7

10:30 a.m.-11:29 p.m.

2 stops13h 59m

C$ 785

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Tue 8/7

1:10 p.m.-9:29 p.m.

1 stop7h 19m

Montreal Pierre Elliott Trudeau Intl

Thu 10/7

6:15 a.m.-10:11 a.m.

1 stop4h 56m

C$ 861

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 11/7

12:10 p.m.-10:53 a.m.

3 stops21h 43m

Toronto Pearson Intl

Fri 18/7

7:40 a.m.-8:35 p.m.

2 stops13h 55m

C$ 1,500

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Wed 24/9

11:00 a.m.-4:00 p.m.

1 stop4h 00m

C$ 354

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 10/7

6:19 p.m.-12:20 p.m.

2 stops17h 01m

C$ 357

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 10/7

1:10 p.m.-9:29 p.m.

1 stop7h 19m

C$ 391

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Wed 25/6

12:10 p.m.-11:23 p.m.

1 stop10h 13m

C$ 469

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

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

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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 12 June 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Green Bay to Ontario. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

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
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

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
2,868 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

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?

    Most people fly from Green Bay Austin-Straubel (GRB) if they book a flight from Green Bay to Ontario. Green Bay Austin-Straubel is conveniently located just 9.5 km from Green Bay’s city centre.

  • What are the cheapest airlines to fly from Green Bay to Region of Ontario one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at C$ 354. American Airlines flights start at C$ 357 while deals on United Airlines start at C$ 391 one-way.

  • 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 C$ 167). Flying from Green Bay to Region of Ontario in July is currently the most expensive (average of C$ 255). 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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How does Cheapflights help users find flights from Green Bay to Ontario?

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Cheapflights helps you find that perfect flight to Ontario from Green Bay by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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Certainly. Search results for flights to Ontario from Green Bay shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Green Bay to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Green Bay to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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