$668+ Cheap flights from Green Bay (GRB) to Ontario
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — YYZ
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Green Bay to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Green Bay to Ontario
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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 October 9, 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 October 9, 2026.
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:04 pm -
1 stop15h 30m
Tue 11/37:09 am -
1 stop17h 57m
Deal found 10/8![American Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/293:26 pm -
1 stop4h 49m
Sun 1/310:53 am -
1 stop13h 22m
Deal found 10/8![United Airlines logo]()
$801
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:33 am -
2 stops7h 29m
Sat 10/2411:00 am -
1 stop6h 54m
Deal found 10/4![United Airlines logo]()
$811
This American Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:46 pm -
2 stops7h 59m
Sat 10/246:15 am -
2 stops8h 59m
Deal found 10/5![American Airlines logo]()
$816
This United Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:15 am -
1 stop6h 48m
Sun 11/88:35 am -
1 stop7h 04m
Deal found 10/5![United Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/276:00 am -
1 stop7h 03m
Sat 1/26:45 am -
1 stop4h 27m
Deal found 10/5![United Airlines logo]()
$846
This oojo deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:08 pm -
1 stop22h 12m
Mon 12/75:15 pm -
1 stop19h 39m
Deal found 10/7![WestJet logo]()
$884
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/295:30 am -
1 stop6h 08m
Sun 1/35:10 pm -
2 stops8h 10m
Deal found 10/8![American Airlines logo]()
$925
This Justfly.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:51 pm -
1 stop5h 24m
Mon 10/126:10 pm -
1 stop3h 51m
Deal found 10/8![WestJet logo]()
$1,054
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 October 9, 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 October 9, 2026.
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:04 pm -
1 stop15h 30m
Tue 11/37:09 am -
1 stop17h 57m
Deal found 10/8![American Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/93:30 pm -
1 stop7h 29m
Wed 1/1310:53 am -
1 stop9h 24m
Deal found 10/8![United Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/293:26 pm -
1 stop4h 49m
Sun 1/310:53 am -
1 stop13h 22m
Deal found 10/8![United Airlines logo]()
$801
This American Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop5h 34m
Sat 10/241:15 pm -
1 stop6h 02m
Deal found 10/5![American Airlines logo]()
$801
Last-minute flights from Green Bay to OntarioDiscover last-minute flight deals from Green Bay to Ontario. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Green Bay to Ontario. Data last updated October 9, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:51 pm -
1 stop5h 24m
Mon 10/126:10 pm -
1 stop3h 51m
Deal found 10/8![WestJet logo]()
$1,054
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:58 am -
2 stops7h 53m
Mon 10/126:25 pm -
1 stop6h 47m
Deal found 10/8![American Airlines logo]()
$1,072
This American Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:58 am -
1 stop6h 46m
Fri 10/163:14 pm -
1 stop19h 08m
Deal found 10/7![American Airlines logo]()
$1,199
This Justfly.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:51 pm -
1 stop5h 24m
Fri 10/167:34 pm -
1 stop21h 37m
Deal found 10/7![WestJet logo]()
$1,274
This American Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am -
1 stop5h 34m
Sat 10/241:15 pm -
1 stop6h 02m
Deal found 10/5![American Airlines logo]()
$801
This United Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:33 am -
2 stops7h 29m
Sat 10/2411:00 am -
1 stop6h 54m
Deal found 10/4![United Airlines logo]()
$811
This American Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:04 pm -
1 stop15h 30m
Tue 11/37:09 am -
1 stop17h 57m
Deal found 10/8![American Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:15 am -
1 stop6h 48m
Sun 11/88:35 am -
1 stop7h 04m
Deal found 10/5![United Airlines logo]()
$822
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 October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $668 (American Airlines) |
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 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Green Bay to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Green BayToronto
GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl
GRBYYZ
Green Bay Austin-Straubel
Thu 10/29
8:04 pm-12:34 pm
1 stop15h 30m
Toronto Pearson Intl
Tue 11/3
7:09 am-12:06 am
1 stop17h 57m
$668
Green BayToronto
GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl
GRBYYZ
Green Bay Austin-Straubel
Sat 1/9
3:30 pm-11:59 pm
1 stop7h 29m
Toronto Pearson Intl
Wed 1/13
10:53 am-7:17 pm
1 stop9h 24m
$779
Green BayToronto
GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl
GRBYYZ
Green Bay Austin-Straubel
Tue 12/29
3:26 pm-9:15 pm
1 stop4h 49m
Toronto Pearson Intl
Sun 1/3
10:53 am-11:15 pm
1 stop13h 22m
$801
Quickest round-trip
Green BayToronto
GRB Green Bay Austin-Straubel - YYZ Toronto Pearson Intl
GRBYYZ
Green Bay Austin-Straubel
Fri 10/23
6:00 am-12:34 pm
1 stop5h 34m
Toronto Pearson Intl
Sat 10/24
1:15 pm-6:17 pm
1 stop6h 02m
$801
Sorted 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
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
No data available for this route at this time. Please check back soon.
Related info for your journey
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