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Cheap flights from Green Bay to Ontario from C$ 666

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 718

One-way from

C$ 666
American Airlines
  • American Airlines
  • 29/10-5/11
  • 3 total stops
  • 29h 49m total
  • Green Bay to Ontario
Search Deals
Delta
  • Delta
  • 23/9
  • 1 total stop
  • 4h 55m 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 15 September 2025.

Wed 29/109:44 a.m.GRB - YYZ
2 stops12h 18mAmerican Airlines
Wed 5/114:44 p.m.YYZ - GRB
1 stop17h 31mAmerican Airlines
Deal found 13/9C$ 718
Thu 6/116:01 a.m.GRB - YUL
1 stop8h 10mAmerican Airlines
Thu 27/117:30 a.m.YUL - GRB
2 stops32h 10mAmerican Airlines
Deal found 14/9C$ 718
Thu 6/116:01 a.m.GRB - YYZ
1 stop9h 03mAmerican Airlines
Sun 9/114:44 p.m.YYZ - GRB
1 stop17h 31mAmerican Airlines
Deal found 15/9C$ 794
Wed 5/1111:06 a.m.GRB - YUL
2 stops25h 43mAmerican Airlines
Thu 20/117:30 a.m.YUL - GRB
2 stops12h 52mAmerican Airlines
Deal found 14/9C$ 826
Thu 6/113:51 p.m.GRB - YUL
1 stop23h 06mMultiple Airlines
Thu 27/114:45 p.m.YUL - GRB
1 stop20h 48mMultiple Airlines
Deal found 14/9C$ 868
Wed 5/111:20 p.m.GRB - YUL
1 stop25h 37mMultiple Airlines
Thu 20/111:10 p.m.YUL - GRB
1 stop22h 01mMultiple Airlines
Deal found 14/9C$ 869
Thu 27/117:00 a.m.GRB - YUL
1 stop3h 59mWestJet
Sun 30/116:00 a.m.YUL - GRB
1 stop11h 16mWestJet
Deal found 15/9C$ 988
Thu 6/118:00 a.m.GRB - YYZ
2 stops8h 49mUnited Airlines
Sun 9/115:30 p.m.YYZ - GRB
1 stop5h 08mUnited Airlines
Deal found 15/9C$ 1,007
Sun 28/911:07 a.m.GRB - YYZ
1 stop21h 15mWestJet
Thu 2/1010:12 a.m.YYZ - GRB
1 stop6h 59mWestJet
Deal found 14/9C$ 1,015
Thu 27/1112:20 p.m.GRB - YUL
1 stop6h 27mDelta
Sun 30/117:10 a.m.YUL - GRB
1 stop9h 27mDelta
Deal found 14/9C$ 1,086
Sun 28/99:48 a.m.GRB - YYZ
1 stop3h 43mAmerican Airlines
Thu 2/103:45 p.m.YYZ - GRB
2 stops8h 43mAmerican Airlines
Deal found 14/9C$ 1,126

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 15 September 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 29/10

9:44 a.m.-11:02 p.m.

2 stops12h 18m

Toronto Pearson Intl

Wed 5/11

4:44 p.m.-9:15 a.m.

1 stop17h 31m

C$ 718

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 6/11

6:01 a.m.-3:11 p.m.

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

7:30 a.m.-2:40 p.m.

2 stops32h 10m

C$ 718

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Thu 6/11

6:01 a.m.-4:04 p.m.

1 stop9h 03m

Toronto Pearson Intl

Sun 9/11

4:44 p.m.-9:15 a.m.

1 stop17h 31m

C$ 794

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Wed 5/11

11:06 a.m.-1:49 p.m.

2 stops25h 43m

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

7:30 a.m.-7:22 p.m.

2 stops12h 52m

C$ 826

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 6/11

3:51 p.m.-3:57 p.m.

1 stop23h 06m

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

4:45 p.m.-12:33 p.m.

1 stop20h 48m

C$ 868

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Wed 5/11

1:20 p.m.-3:57 p.m.

1 stop25h 37m

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

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

1 stop22h 01m

C$ 869

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Mon 9/3

5:25 p.m.-11:02 p.m.

1 stop4h 37m

Toronto Pearson Intl

Fri 13/3

6:30 a.m.-11:19 a.m.

1 stop5h 49m

C$ 978

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 27/11

7:00 a.m.-11:59 a.m.

1 stop3h 59m

Montreal Pierre Elliott Trudeau Intl

Sun 30/11

6:00 a.m.-4:16 p.m.

1 stop11h 16m

C$ 988

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Thu 6/11

8:00 a.m.-5:49 p.m.

2 stops8h 49m

Toronto Pearson Intl

Sun 9/11

5:30 p.m.-9:38 p.m.

1 stop5h 08m

C$ 1,007

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Sun 28/9

11:07 a.m.-9:22 a.m.

1 stop21h 15m

Toronto Pearson Intl

Thu 2/10

10:12 a.m.-4:11 p.m.

1 stop6h 59m

C$ 1,015

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 14 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?

    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.

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

    Departing from Green Bay to Region of Ontario will take you 4h 37m. The distance from Green Bay to Region of Ontario is about 686 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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$ 169). 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

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Alternative routes for Green Bay to Ontario

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

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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.

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