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

Departing from Green Bay to Region of Ontario will take you 12h 15m. 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.

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.

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).

What is the cheapest time of day to fly from GRB to ON?

When flying from Green Bay to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

C$ 458+ Cheap Flights from Green Bay to Ontario

Cheap flight deals from Green Bay to Ontario

Enter your travel dates to find the best prices.

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Best

Last-minute

One-way

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 23 August 2026.

Sat 19/95:43 a.m. -

1 stop16h 43m

Sat 26/96:25 p.m. -

1 stop16h 10m

Deal found 19/8C$ 706

Sat 3/1010:05 a.m. -

1 stop12h 21m

Sat 10/103:14 p.m. -

1 stop19h 08m

Deal found 19/8C$ 872

Tue 15/98:27 p.m. -

1 stop19h 26m

Sat 19/95:34 p.m. -

1 stop17h 01m

Deal found 22/8C$ 873

Fri 30/104:51 p.m. -

1 stop5h 24m

Fri 6/116:00 a.m. -

1 stop12h 21m

Deal found 19/8C$ 874

Tue 8/123:44 p.m. -

1 stop4h 17m

Wed 9/126:10 a.m. -

1 stop6h 55m

Deal found 18/8C$ 885

Fri 9/108:04 p.m. -

1 stop13h 55m

Mon 12/1011:40 a.m. -

1 stop13h 32m

Deal found 19/8C$ 900

Tue 6/102:46 p.m. -

1 stop19h 13m

Tue 13/107:29 a.m. -

1 stop17h 43m

Deal found 22/8C$ 902

Mon 16/118:27 p.m. -

1 stop14h 03m

Wed 18/1112:10 p.m. -

1 stop7h 10m

Deal found 19/8C$ 924

Sun 8/1110:37 a.m. -

1 stop7h 08m

Wed 11/1110:53 a.m. -

1 stop6h 59m

Deal found 18/8C$ 927

Tue 15/99:30 a.m. -

2 stops11h 36m

Wed 16/99:45 a.m. -

1 stop5h 20m

Deal found 22/8C$ 929

Best flights from Green Bay to Ontario
Discover carefully curated flight deals from Green Bay to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Mon 21/98:27 p.m. -

1 stop15h 08m

Mon 28/96:30 a.m. -

1 stop10h 16m

Deal found 23/8C$ 823

Wed 14/105:00 a.m. -

1 stop5h 49m

Wed 14/102:30 p.m. -

2 stops7h 33m

Deal found 23/8C$ 906

Sat 3/1010:05 a.m. -

1 stop12h 21m

Sat 10/103:14 p.m. -

1 stop19h 08m

Deal found 19/8C$ 872

Tue 8/128:25 a.m. -

2 stops10h 13m

Wed 9/127:00 a.m. -

2 stops10h 43m

Deal found 18/8C$ 906

Tue 15/98:27 p.m. -

1 stop19h 26m

Sat 19/95:34 p.m. -

1 stop17h 01m

Deal found 22/8C$ 873

Tue 5/18:25 a.m. -

1 stop4h 26m

Sat 9/16:10 a.m. -

1 stop13h 55m

Deal found 22/8C$ 916

Sat 19/95:43 a.m. -

2 stops11h 59m

Sat 26/92:15 p.m. -

2 stops10h 58m

Deal found 19/8C$ 892

Sat 9/13:44 p.m. -

1 stop4h 50m

Wed 13/17:00 a.m. -

1 stop4h 30m

Deal found 22/8C$ 927

Fri 9/108:04 p.m. -

1 stop13h 55m

Mon 12/1011:40 a.m. -

1 stop13h 32m

Deal found 19/8C$ 900

Tue 15/99:30 a.m. -

2 stops11h 36m

Wed 16/99:45 a.m. -

1 stop5h 20m

Deal found 22/8C$ 929

Tue 6/106:00 a.m. -

2 stops11h 45m

Tue 13/106:25 p.m. -

1 stop6h 47m

Deal found 22/8C$ 905

Thu 19/1110:04 a.m. -

2 stops10h 39m

Wed 25/111:16 p.m. -

1 stop6h 06m

Deal found 23/8C$ 905

Mon 16/118:27 p.m. -

1 stop14h 03m

Wed 18/1112:10 p.m. -

1 stop7h 10m

Deal found 19/8C$ 924

Find flight deals from Green Bay to Ontario

Round-trip from	C$ 706
One-way from	C$ 458

American Airlines
19/9-26/9
2 total stops
32h 53m total
Green Bay to Ontario

Search Deals

United Airlines
19/10
1 total stop
3h 54m total
Green Bay to Ontario

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Mon 21/9

8:27 p.m.-12:35 p.m.

1 stop15h 08m

Toronto Pearson Intl

Mon 28/9

6:30 a.m.-3:46 p.m.

1 stop10h 16m

C$ 823

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Sat 3/10

10:05 a.m.-11:26 p.m.

1 stop12h 21m

Toronto Pearson Intl

Sat 10/10

3:14 p.m.-9:22 a.m.

1 stop19h 08m

C$ 872

Green BayMontreal

GRB Green Bay Austin-Straubel - YUL Montreal Pierre Elliott Trudeau Intl

GRBYUL

Green Bay Austin-Straubel

Tue 15/9

8:27 p.m.-4:53 p.m.

1 stop19h 26m

Montreal Pierre Elliott Trudeau Intl

Sat 19/9

5:34 p.m.-9:35 a.m.

1 stop17h 01m

C$ 873

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Sat 19/9

5:43 a.m.-6:42 p.m.

2 stops11h 59m

Toronto Pearson Intl

Sat 26/9

2:15 p.m.-12:13 a.m.

2 stops10h 58m

C$ 892

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Fri 9/10

8:04 p.m.-10:59 a.m.

1 stop13h 55m

Toronto Pearson Intl

Mon 12/10

11:40 a.m.-12:12 a.m.

1 stop13h 32m

C$ 900

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Tue 6/10

6:00 a.m.-6:45 p.m.

2 stops11h 45m

Toronto Pearson Intl

Tue 13/10

6:25 p.m.-12:12 a.m.

1 stop6h 47m

C$ 905

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Thu 19/11

10:04 a.m.-9:43 p.m.

2 stops10h 39m

Toronto Pearson Intl

Wed 25/11

1:16 p.m.-6:22 p.m.

1 stop6h 06m

C$ 905

Green BayToronto

GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl

GRBYYZ

Green Bay Austin-Straubel

Wed 14/10

5:00 a.m.-11:49 a.m.

1 stop5h 49m

Toronto Pearson Intl

Wed 14/10

2:30 p.m.-9:03 p.m.

2 stops7h 33m

C$ 906

Green BayMontreal

GRB Green Bay Austin-Straubel - YUL Montreal Pierre Elliott Trudeau Intl

GRBYUL

Green Bay Austin-Straubel

Tue 8/12

8:25 a.m.-7:38 p.m.

2 stops10h 13m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

7:00 a.m.-4:43 p.m.

2 stops10h 43m

C$ 906

Green BayMontreal

GRB Green Bay Austin-Straubel - YUL Montreal Pierre Elliott Trudeau Intl

GRBYUL

Green Bay Austin-Straubel

Tue 5/1

8:25 a.m.-1:51 p.m.

1 stop4h 26m

Montreal Pierre Elliott Trudeau Intl

Sat 9/1

6:10 a.m.-7:05 p.m.

1 stop13h 55m

C$ 916

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/8

Showing 1-10 of 18 resultsSorted by cheapest first

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.

GRB-YYZ

GRB-YUL

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

GRB-CAON

GRB-YYZ

GRB-YUL

No data available for this route at this time. Please check back soon.

Related info for your journey

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 12h 15m. 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?

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.

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Cheap flights from Green Bay to Ontario from C$ 458

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Green Bay to Ontario

Cheapest flights from Green Bay to OntarioExplore 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 23 August 2026.

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 23 August 2026.

Best flights from Green Bay to OntarioDiscover carefully curated flight deals from Green Bay to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Discover carefully curated flight deals from Green Bay to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Last-minute flights from Green Bay to OntarioDiscover last-minute flight deals from Green Bay to Ontario. Data last updated 23 August 2026 and is based on user searches.

Discover last-minute flight deals from Green Bay to Ontario. Data last updated 23 August 2026 and is based on user searches.

One-way flights from Green Bay to OntarioSearch for one-way flight options from Green Bay to Ontario. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.

Search for one-way flight options from Green Bay to Ontario. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.

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Best time to book a flight from Green Bay to Ontario

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Related info for your journey

What airport do you fly from for flights from Green Bay to Ontario?

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

Can I find deals for flights from Green Bay to Ontario that include hotel bookings?

How can I find direct flights from Green Bay to Ontario?

Can I find deals for business class flights from Green Bay to Ontario?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Green Bay to Ontario

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Complete your trip

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Green Bay and Ontario flights

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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 23 August 2026.

Best flights from Green Bay to Ontario
Discover carefully curated flight deals from Green Bay to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 August 2026.

Last-minute flights from Green Bay to Ontario
Discover last-minute flight deals from Green Bay to Ontario. Data last updated 23 August 2026 and is based on user searches.

One-way flights from Green Bay to Ontario
Search for one-way flight options from Green Bay to Ontario. Find affordable one-way fares based on user searches. Data last updated 23 August 2026.