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Cheap flights from Green Bay to Ontario from C$ 437

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
5 Aug — 12 Aug1
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 31 July 2025.

Round-trip from

C$ 691

One-way from

C$ 437
American Airlines
  • American Airlines
  • 14/10-18/10
  • 2 total stops
  • 23h 11m total
  • Green Bay to Ontario
Search Deals
United Airlines
  • United Airlines
  • 26/8
  • 2 total stops
  • 15h 34m 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 31 July 2025.

Tue 14/108:08 p.m.GRB - YYZ
1 stop13h 51mAmerican Airlines
Sat 18/103:10 p.m.YYZ - GRB
1 stop9h 20mAmerican Airlines
Deal found 30/7C$ 691
Thu 20/116:15 a.m.GRB - YUL
1 stop8h 42mMultiple Airlines
Sun 23/116:00 a.m.YUL - GRB
1 stop16h 38mMultiple Airlines
Deal found 30/7C$ 738
Tue 30/94:35 p.m.GRB - YUL
2 stops16h 23mAmerican Airlines
Fri 3/105:15 p.m.YUL - GRB
1 stop18h 26mAmerican Airlines
Deal found 29/7C$ 815
Sat 13/95:30 p.m.GRB - YUL
1 stop19h 24mUnited Airlines
Sat 20/99:45 a.m.YUL - GRB
1 stop12h 58mUnited Airlines
Deal found 30/7C$ 857
Tue 14/104:16 p.m.GRB - YYZ
2 stops16h 13mDelta
Sat 18/106:09 p.m.YYZ - GRB
1 stop3h 28mDelta
Deal found 30/7C$ 883
Sat 6/97:02 a.m.GRB - YYZ
1 stop3h 18mWestJet
Sat 13/96:00 a.m.YYZ - GRB
1 stop6h 23mWestJet
Deal found 31/7C$ 901
Thu 14/87:02 a.m.GRB - YUL
2 stops16h 25mWestJet
Sat 16/86:45 a.m.YUL - GRB
2 stops16h 49mWestJet
Deal found 30/7C$ 1,074
Tue 14/108:00 a.m.GRB - YYZ
2 stops8h 14mUnited Airlines
Sat 18/1010:05 a.m.YYZ - GRB
2 stops12h 28mUnited Airlines
Deal found 30/7C$ 1,113
Tue 30/1211:04 a.m.GRB - YUL
2 stops11h 55mDelta
Sun 4/16:45 a.m.YUL - GRB
2 stops10h 27mDelta
Deal found 30/7C$ 1,222

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 31 July 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 14/10

8:08 p.m.-10:59 a.m.

1 stop13h 51m

Toronto Pearson Intl

Sat 18/10

3:10 p.m.-11:30 p.m.

1 stop9h 20m

C$ 691

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 20/11

6:15 a.m.-3:57 p.m.

1 stop8h 42m

Montreal Pierre Elliott Trudeau Intl

Sun 23/11

6:00 a.m.-9:38 p.m.

1 stop16h 38m

C$ 738

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Tue 30/9

4:35 p.m.-9:58 a.m.

2 stops16h 23m

Montreal Pierre Elliott Trudeau Intl

Fri 3/10

5:15 p.m.-10:41 a.m.

1 stop18h 26m

C$ 815

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Sat 13/9

5:30 p.m.-1:54 p.m.

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

Sat 20/9

9:45 a.m.-9:43 p.m.

1 stop12h 58m

C$ 857

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 14/10

4:16 p.m.-9:29 a.m.

2 stops16h 13m

Toronto Pearson Intl

Sat 18/10

6:09 p.m.-8:37 p.m.

1 stop3h 28m

C$ 883

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Sat 6/9

7:02 a.m.-11:20 a.m.

1 stop3h 18m

Toronto Pearson Intl

Sat 13/9

6:00 a.m.-11:23 a.m.

1 stop6h 23m

C$ 901

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Thu 14/8

7:02 a.m.-12:27 a.m.

2 stops16h 25m

Montreal Pierre Elliott Trudeau Intl

Sat 16/8

6:45 a.m.-10:34 p.m.

2 stops16h 49m

C$ 1,074

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 14/10

8:00 a.m.-5:14 p.m.

2 stops8h 14m

Toronto Pearson Intl

Sat 18/10

10:05 a.m.-9:33 p.m.

2 stops12h 28m

C$ 1,113

Green BayMontreal

GRB - YUL

GRBYUL

Green Bay Austin-Straubel

Tue 30/12

11:04 a.m.-11:59 p.m.

2 stops11h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 4/1

6:45 a.m.-4:12 p.m.

2 stops10h 27m

C$ 1,222

Green BayToronto

GRB - YYZ

GRBYYZ

Green Bay Austin-Straubel

Tue 26/8

5:30 p.m.-10:04 a.m.

2 stops15h 34m

C$ 437

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/7

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.

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 31 July 2025.
Read through reviews of airlines operating flights from Green Bay to Ontario, such as Delta,United Airlines, andAmerican Airlines. 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
7,981 reviews
Check prices

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
8,900 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
7,981 reviews
Check prices

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
2,978 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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.

  • 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

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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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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!

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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