Find flights
When to book
Airlines
FAQs

Cheap flights from Green Bay to Ontario from C$ 326

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
17 May — 24 May1
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 May 2025.

Round-trip from

C$ 648

One-way from

C$ 326
American Airlines
  • American Airlines
  • 12/8-17/8
  • 2 total stops
  • 30h 36m total
  • Green Bay to Ontario
Search Deals
American Airlines
  • American Airlines
  • 12/8
  • 1 total stop
  • 12h 38m 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 May 2025.

Tue 12/89:47 a.m.GRB - YYZ
1 stop12h 38mAmerican Airlines
Sun 17/86:30 a.m.YYZ - GRB
1 stop17h 58mAmerican Airlines
Deal found 12/5C$ 648
Thu 3/71:10 p.m.GRB - YYZ
1 stop9h 48mUnited Airlines
Mon 14/72:45 p.m.YYZ - GRB
1 stop7h 52mUnited Airlines
Deal found 12/5C$ 745
Sat 24/54:13 p.m.GRB - YUL
1 stop6h 06mDelta
Wed 28/511:00 a.m.YUL - GRB
2 stops11h 25mDelta
Deal found 11/5C$ 808
Tue 12/85:30 a.m.GRB - YYZ
2 stops11h 43mDelta
Wed 20/86:00 a.m.YYZ - GRB
2 stops11h 30mDelta
Deal found 12/5C$ 853
Thu 3/76:15 a.m.GRB - YYZ
1 stop15h 55mMultiple Airlines
Mon 14/79:10 p.m.YYZ - GRB
2 stops16h 13mMultiple Airlines
Deal found 12/5C$ 882
Sat 24/56:00 a.m.GRB - YUL
1 stop28h 44mAmerican Airlines
Wed 28/512:30 p.m.YUL - GRB
1 stop23h 27mAmerican Airlines
Deal found 12/5C$ 938
Mon 18/85:25 p.m.GRB - YYZ
1 stop4h 30mWestJet
Tue 19/86:08 p.m.YYZ - GRB
1 stop3h 26mWestJet
Deal found 12/5C$ 1,031

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 May 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

Tue 12/8

9:47 a.m.-11:25 p.m.

1 stop12h 38m

Toronto Pearson Intl

Sun 17/8

6:30 a.m.-11:28 p.m.

1 stop17h 58m

C$ 648

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Thu 3/7

1:10 p.m.-11:58 p.m.

1 stop9h 48m

Toronto Pearson Intl

Mon 14/7

2:45 p.m.-9:37 p.m.

1 stop7h 52m

C$ 745

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 24/5

4:13 p.m.-11:19 p.m.

1 stop6h 06m

Montreal Pierre Elliott Trudeau Intl

Wed 28/5

11:00 a.m.-9:25 p.m.

2 stops11h 25m

C$ 808

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 12/8

5:30 a.m.-6:13 p.m.

2 stops11h 43m

Toronto Pearson Intl

Wed 20/8

6:00 a.m.-4:30 p.m.

2 stops11h 30m

C$ 853

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Thu 3/7

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

1 stop15h 55m

Toronto Pearson Intl

Mon 14/7

9:10 p.m.-12:23 p.m.

2 stops16h 13m

C$ 882

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 24/5

6:00 a.m.-11:44 a.m.

1 stop28h 44m

Montreal Pierre Elliott Trudeau Intl

Wed 28/5

12:30 p.m.-10:57 a.m.

1 stop23h 27m

C$ 938

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Mon 18/8

5:25 p.m.-10:55 p.m.

1 stop4h 30m

Toronto Pearson Intl

Tue 19/8

6:08 p.m.-8:34 p.m.

1 stop3h 26m

C$ 1,031

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 12/8

9:47 a.m.-11:25 p.m.

1 stop12h 38m

C$ 326

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 12/8

10:46 a.m.-9:43 p.m.

2 stops9h 57m

C$ 372

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Wed 24/9

4:00 p.m.-11:24 p.m.

1 stop6h 24m

C$ 386

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 13 results
1
2

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 May 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
7,950 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
8,724 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,950 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
2,837 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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 American Airlines, which is currently one of the cheapest options available, starting at C$ 326. United Airlines flights start at C$ 372 while deals on Delta start at C$ 386 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$ 258). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Green Bay to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Vancouver Intl flights
O'Hare Intl to Calgary flights
O'Hare Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Minneapolis to Vancouver Intl flights
Minneapolis to Calgary flights
Minneapolis to Pierre Elliott Trudeau Intl flights
Minneapolis to Pearson Intl flights
O'Hare Intl to Québec City flights
O'Hare Intl to Toronto Island flights
O'Hare Intl to Winnipeg flights
O'Hare Intl to Halifax flights
Minneapolis to Edmonton flights
O'Hare Intl to Abbotsford flights
O'Hare Intl to Ottawa flights
Milwaukee to Vancouver Intl flights
O'Hare Intl to Edmonton flights
Milwaukee to Pearson Intl flights
Milwaukee to Calgary flights
Minneapolis to Abbotsford flights
Minneapolis to Québec City flights
Madison to Vancouver Intl flights
O'Hare Intl to Charlottetown flights
Milwaukee to Pierre Elliott Trudeau Intl flights
Minneapolis to Halifax flights
O'Hare Intl to St. John's flights
O'Hare Intl to Victoria flights
Minneapolis to Ottawa flights
Madison to Pearson Intl flights
Minneapolis to Winnipeg flights
Minneapolis to Victoria flights
Minneapolis to St. John's flights
Milwaukee to Abbotsford flights
Madison to Ottawa flights
Madison to Calgary flights
O'Hare Intl to Regina flights
Minneapolis to Kelowna flights
Milwaukee to Halifax flights
Green Bay to Pearson Intl flights
Green Bay to Vancouver Intl flights
Appleton to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Kelowna flights
O'Hare Intl to Saskatoon flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Green Bay to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Green Bay to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Green Bay to Ontario?

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!

Can Cheapflights find flights from Green Bay to Ontario with no change fees?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.