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Cheap flights from Green Bay to Ontario from C$ 370

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
21 Mar — 28 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Green Bay to Ontario

Enter your travel dates to find the best prices.

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 19 February 2026.

Sat 4/45:00 a.m.
GRB
-
YUL
1 stop8h 59m
American Airlines
Sat 11/412:30 p.m.
YUL
-
GRB
1 stop12h 01m
American Airlines
Deal found 18/2C$ 530
Thu 2/46:01 a.m.
GRB
-
YUL
1 stop7h 57m
American Airlines
Thu 9/412:30 p.m.
YUL
-
GRB
1 stop12h 01m
American Airlines
Deal found 16/2C$ 638
Fri 13/36:38 p.m.
GRB
-
YYZ
1 stop16h 52m
American Airlines
Thu 19/36:17 p.m.
YYZ
-
GRB
1 stop16h 09m
American Airlines
Deal found 18/2C$ 709
Sun 26/45:24 p.m.
GRB
-
YUL
1 stop17h 20m
American Airlines
Fri 1/512:30 p.m.
YUL
-
GRB
1 stop21h 42m
American Airlines
Deal found 16/2C$ 719
Wed 18/35:00 a.m.
GRB
-
YYZ
1 stop10h 03m
American Airlines
Tue 7/47:15 p.m.
YYZ
-
GRB
1 stop14h 57m
American Airlines
Deal found 18/2C$ 723
Fri 22/58:25 p.m.
GRB
-
YYZ
1 stop12h 29m
United Airlines
Tue 26/51:55 p.m.
YYZ
-
GRB
1 stop8h 35m
United Airlines
Deal found 16/2C$ 758
Tue 16/66:49 p.m.
GRB
-
YYZ
1 stop16h 46m
American Airlines
Tue 23/66:24 p.m.
YYZ
-
GRB
1 stop18h 21m
American Airlines
Deal found 15/2C$ 776
Wed 18/35:19 a.m.
GRB
-
YYZ
2 stops14h 10m
Delta
Tue 7/45:10 p.m.
YYZ
-
GRB
1 stop5h 52m
Delta
Deal found 15/2C$ 843
Mon 16/31:00 p.m.
GRB
-
YYZ
1 stop7h 18m
United Airlines
Wed 18/36:45 a.m.
YYZ
-
GRB
1 stop8h 21m
United Airlines
Deal found 18/2C$ 846
Tue 3/36:30 a.m.
GRB
-
YUL
1 stop6h 30m
United Airlines
Fri 6/34:45 p.m.
YUL
-
GRB
1 stop5h 40m
United Airlines
Deal found 16/2C$ 862
Sun 26/44:22 p.m.
GRB
-
YUL
1 stop6h 04m
Delta
Fri 1/52:29 p.m.
YUL
-
GRB
2 stops9h 32m
Delta
Deal found 16/2C$ 876
Sun 8/35:28 p.m.
GRB
-
YYZ
1 stop4h 51m
United Airlines
Wed 25/38:15 a.m.
YYZ
-
GRB
1 stop9h 37m
United Airlines
Deal found 17/2C$ 926

Find 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 19 February 2026.

Round-trip from

C$ 530

One-way from

C$ 370
American Airlines
  • American Airlines
  • 4/4-11/4
  • 2 total stops
  • 21h 00m total
  • Green Bay to Ontario
Search Deals
United Airlines
  • United Airlines
  • 15/3
  • 1 total stop
  • 26h 49m total
  • Green Bay to Ontario
Search Deals

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 19 February 2026.
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 BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 4/4

5:00 a.m.-2:59 p.m.

1 stop8h 59m

Montreal Pierre Elliott Trudeau Intl

Sat 11/4

12:30 p.m.-11:31 p.m.

1 stop12h 01m

C$ 530

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 2/4

6:01 a.m.-2:58 p.m.

1 stop7h 57m

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

12:30 p.m.-11:31 p.m.

1 stop12h 01m

C$ 638

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 13/3

6:38 p.m.-12:30 p.m.

1 stop16h 52m

Toronto Pearson Intl

Thu 19/3

6:17 p.m.-9:26 a.m.

1 stop16h 09m

C$ 709

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sun 26/4

5:24 p.m.-11:44 a.m.

1 stop17h 20m

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

12:30 p.m.-9:12 a.m.

1 stop21h 42m

C$ 719

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Wed 18/3

5:00 a.m.-4:03 p.m.

1 stop10h 03m

Toronto Pearson Intl

Tue 7/4

7:15 p.m.-9:12 a.m.

1 stop14h 57m

C$ 723

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 22/5

8:25 p.m.-9:54 a.m.

1 stop12h 29m

Toronto Pearson Intl

Tue 26/5

1:55 p.m.-9:30 p.m.

1 stop8h 35m

C$ 758

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Fri 22/5

8:25 p.m.-9:54 a.m.

1 stop12h 29m

Toronto Pearson Intl

Wed 27/5

7:00 a.m.-2:00 p.m.

1 stop8h 00m

C$ 758

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 16/6

6:49 p.m.-12:35 p.m.

1 stop16h 46m

Toronto Pearson Intl

Tue 23/6

6:24 p.m.-11:45 a.m.

1 stop18h 21m

C$ 776

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Wed 18/3

5:19 a.m.-8:29 p.m.

2 stops14h 10m

Toronto Pearson Intl

Tue 7/4

5:10 p.m.-10:02 p.m.

1 stop5h 52m

C$ 843

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Mon 16/3

1:00 p.m.-9:18 p.m.

1 stop7h 18m

Toronto Pearson Intl

Wed 18/3

6:45 a.m.-2:06 p.m.

1 stop8h 21m

C$ 846

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/2

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 8h 59m. The distance from Green Bay to Region of Ontario is about 1135 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.

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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