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Guarulhos Intl

$389+ Cheap flights from Ontario (ONT) to Guarulhos Intl, Brazil (GRU)

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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GRU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Ontario to Guarulhos Intl

Cheapest flights from Ontario to Guarulhos Intl
Explore the most affordable flight options available from Ontario to Guarulhos Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 12/2111:59 pmONT - GRU
1 stop26h 16mUnited Airlines
Wed 12/319:45 pmGRU - ONT
1 stop29h 40mUnited Airlines
Deal found 12/11$1,357
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/236:39 pmONT - GRU
2 stops33h 51mUnited Airlines
Wed 12/319:45 pmGRU - ONT
1 stop29h 40mUnited Airlines
Deal found 12/11$1,361
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:02 pmONT - GRU
2 stops25h 38mMultiple Airlines
Wed 1/144:30 pmGRU - ONT
3 stops35h 22mMultiple Airlines
Deal found 12/11$1,414
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/136:41 pmONT - GRU
2 stops34h 39mUnited Airlines
Sat 12/2010:25 pmGRU - ONT
2 stops43h 13mUnited Airlines
Deal found 12/10$1,421
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/186:04 amONT - GRU
1 stop22h 26mUnited Airlines
Sun 12/2810:15 pmGRU - ONT
2 stops27h 52mUnited Airlines
Deal found 12/11$1,533
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:42 amONT - GRU
3 stops23h 58mMultiple Airlines
Sat 12/207:15 pmGRU - ONT
3 stops30h 40mMultiple Airlines
Deal found 12/10$1,544

Find flight deals from Ontario to Guarulhos Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Guarulhos Intl (GRU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$838
(Mytrip)

One-way from

$389
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$795
Provider with most accurate pricing for Ontario-Sao Paulo Guarulhos Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Sao Paulo Guarulhos Intl flights.
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From Ontario to Sao Paulo Guarulhos Intl
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One-way flight from Ontario to Sao Paulo Guarulhos Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Guarulhos Intl 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 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Ontario to Sao Paulo Guarulhos Intl Airport that are best for you.

Fly from

Ontario

Fly to

Guarulhos Intl

Route

Depart

Return

Price

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Mon 2/2

11:02 pm-5:40 am

2 stops25h 38m

Sao Paulo Guarulhos Intl

Tue 2/17

8:55 am-10:52 pm

2 stops18h 57m

$929

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Sat 1/24

10:30 pm-10:40 pm

3 stops19h 10m

Sao Paulo Guarulhos Intl

Sat 1/31

5:25 pm-10:52 pm

3 stops34h 27m

$1,087

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Tue 3/31

6:00 am-6:45 am

1 stop20h 45m

Sao Paulo Guarulhos Intl

Tue 5/5

9:50 pm-12:22 pm

2 stops18h 32m

$1,095

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Mon 2/2

6:10 am-9:30 am

1 stop22h 20m

Sao Paulo Guarulhos Intl

Mon 2/9

9:45 pm-12:47 pm

2 stops20h 02m

$1,095

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Mon 2/9

6:10 am-9:30 am

1 stop22h 20m

Sao Paulo Guarulhos Intl

Wed 2/18

10:15 pm-12:38 pm

2 stops19h 23m

$1,095

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Tue 2/3

8:00 am-9:30 am

1 stop20h 30m

Sao Paulo Guarulhos Intl

Tue 2/10

10:15 pm-12:47 pm

2 stops19h 32m

$1,095

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Tue 2/24

8:00 am-9:30 am

1 stop20h 30m

Sao Paulo Guarulhos Intl

Sun 3/15

9:45 pm-12:48 pm

2 stops19h 03m

$1,135

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Mon 2/9

11:02 pm-5:40 am

2 stops25h 38m

Sao Paulo Guarulhos Intl

Wed 2/18

8:55 am-10:52 pm

2 stops18h 57m

$1,149

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Wed 1/21

8:00 am-9:30 am

1 stop20h 30m

Sao Paulo Guarulhos Intl

Thu 2/5

10:15 pm-12:48 pm

2 stops19h 33m

$1,170

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Wed 1/21

8:00 am-9:30 am

1 stop20h 30m

Sao Paulo Guarulhos Intl

Mon 2/2

9:45 pm-12:47 pm

2 stops20h 02m

$1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 21 results
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Compare providers for flights from Ontario to Guarulhos Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Guarulhos Intl in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Sao Paulo Guarulhos Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Sao Paulo Guarulhos Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Sao Paulo Guarulhos Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Sao Paulo Guarulhos Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Sao Paulo Guarulhos Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Guarulhos Intl

Have a flexible travel schedule? Discover the best time to fly to Guarulhos Intl from Ontario 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 Ontario to Sao Paulo Guarulhos Intl Airport

What is the cheapest month to book a flight from Ontario to Sao Paulo Guarulhos Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Ontario to Sao Paulo Guarulhos Intl Airport (average of $381). Flying from Ontario to Sao Paulo Guarulhos Intl Airport in December is currently the most expensive (average of $500). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Guarulhos Intl. 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 Ontario to Sao Paulo Guarulhos Intl?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Sao Paulo Guarulhos Intl. You should not have trouble finding flights to Sao Paulo Guarulhos Intl from Ontario; the airport handles an average of 0 outbound flights to Sao Paulo Guarulhos Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ontario airport to Sao Paulo Guarulhos Intl. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Sao Paulo Guarulhos Intl Airport?

    For as low as $1,095, United Airlines can have you in Sao Paulo Guarulhos Intl Airport from Ontario in 20h 45m. The distance from Ontario to Sao Paulo Guarulhos Intl Airport is about 6122 mi.

  • Can I find deals for flights from Ontario to Guarulhos Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Guarulhos Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Guarulhos Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Guarulhos Intl.

  • Can I find deals for business class flights from Ontario to Guarulhos Intl?

    Yes. Cheapflights offers flight deals from Ontario to Guarulhos Intl 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 Ontario to Sao Paulo Guarulhos Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from Ontario to Sao Paulo Guarulhos Intl Airport (average of $381). Flying from Ontario to Sao Paulo Guarulhos Intl Airport in December is currently the most expensive (average of $500). 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.

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