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Guarulhos Intl

$384+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GRU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$943
(Priceline)

One-way from

$384
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$693
From Ontario to Sao Paulo Guarulhos Intl
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One-way flight from Ontario to Sao Paulo Guarulhos Intl
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Highest demand for flights based on searches. 18% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This Priceline deal was found by Cheapflights users on 6/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/711:25 pmONT - GRU
2 stops22h 45mAvianca
Sat 8/307:20 amGRU - ONT
2 stops18h 35mAvianca
Deal found 6/12$943
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Tue 10/711:25 pmONT - GRU
3 stops28h 15mMultiple Airlines
Mon 10/134:50 pmGRU - ONT
3 stops33h 05mMultiple Airlines
Deal found 6/10$1,039
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 9/37:00 amONT - GRU
2 stops20h 10mUnited Airlines
Wed 9/109:50 pmGRU - ONT
2 stops18h 23mUnited Airlines
Deal found 6/11$1,093
This KAYAK deal was found by Cheapflights users on 6/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1811:45 amONT - GRU
1 stop17h 15mLATAM Airlines
Tue 8/2610:50 pmGRU - ONT
1 stop15h 45mLATAM Airlines
Deal found 6/9$1,099
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:00 amONT - GRU
1 stop18h 40mDelta
Thu 10/28:30 pmGRU - ONT
2 stops30h 11mDelta
Deal found 6/11$1,128
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2611:59 pmONT - GRU
1 stop27h 16mAmerican Airlines
Sat 8/210:00 pmGRU - ONT
1 stop17h 56mAmerican Airlines
Deal found 6/11$1,484
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:54 amONT - GRU
2 stops28h 56mIberia
Sun 9/287:15 pmGRU - ONT
2 stops27h 45mIberia
Deal found 6/11$1,908

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 June 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

Thu 8/7

11:25 pm-2:10 am

2 stops22h 45m

Sao Paulo Guarulhos Intl

Sat 8/30

7:20 am-9:55 pm

2 stops18h 35m

$943

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Tue 10/7

11:25 pm-7:40 am

3 stops28h 15m

Sao Paulo Guarulhos Intl

Mon 10/13

4:50 pm-9:55 pm

3 stops33h 05m

$1,039

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Wed 9/3

7:00 am-7:10 am

2 stops20h 10m

Sao Paulo Guarulhos Intl

Wed 9/10

9:50 pm-12:13 pm

2 stops18h 23m

$1,093

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Mon 8/18

11:45 am-9:00 am

1 stop17h 15m

Sao Paulo Guarulhos Intl

Tue 8/26

10:50 pm-10:35 am

1 stop15h 45m

$1,099

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Fri 9/12

7:00 am-5:40 am

1 stop18h 40m

Sao Paulo Guarulhos Intl

Thu 10/2

8:30 pm-10:41 pm

2 stops30h 11m

$1,128

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Sat 7/26

11:59 pm-7:15 am

1 stop27h 16m

Sao Paulo Guarulhos Intl

Sat 8/2

10:00 pm-11:56 am

1 stop17h 56m

$1,484

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Fri 9/12

10:54 am-7:50 pm

2 stops28h 56m

Sao Paulo Guarulhos Intl

Sun 9/28

7:15 pm-7:00 pm

2 stops27h 45m

$1,908

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Sat 8/9

5:13 pm-5:40 am

2 stops32h 27m

$384

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Tue 7/8

11:25 pm-12:40 am

2 stops21h 15m

$424

OntarioSao Paulo

ONT - GRU

ONTGRU

Ontario

Wed 9/17

6:50 pm-8:50 pm

2 stops22h 00m

$562

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 15 results
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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, April is the cheapest month in which you can book a flight from Ontario to Sao Paulo Guarulhos Intl Airport (average of $687). Flying from Ontario to Sao Paulo Guarulhos Intl Airport in December is currently the most expensive (average of $1,209). 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.

Rainfall in Guarulhos Intl by month

Plan your trip to Guarulhos Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sao Paulo Guarulhos Intl Airport ranges from 0.8 - 9.4 inches per month. January is typically the wettest month, when rainfall can reach 9.4 in. July is typically the driest time to visit Sao Paulo Guarulhos Intl Airport when rainfall is around 0.8 in.

Temperature in Guarulhos Intl by month

Plan your trip to Guarulhos Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sao Paulo Guarulhos Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 62.6 F).

Reviews of airlines servicing Guarulhos Intl

Get insights into the airlines that provide service to Guarulhos Intl. 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 Guarulhos Intl. Reviews last updated June 12, 2025.
To help decide which airline to fly from Ontario to Sao Paulo, see what other customers have to say about Delta, LATAM Airlines and Copa Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
LATAM Airlines
7.5
Good
1,785 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Copa Airlines
7.5
Good
1,451 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from Ontario to Sao Paulo Guarulhos Intl Airport round-trip?

    Avianca, at $943, was found to be the cheapest airline from Ontario to Sao Paulo Guarulhos Intl Airport.Alternate airlines to your destination round-trip include United Airlines and LATAM Airlines.

  • What are the cheapest airlines to fly from Ontario to Sao Paulo Guarulhos Intl Airport one-way?

    The cheapest airlines for a one-way flight from Ontario to Sao Paulo Guarulhos Intl Airport are Avianca ($424), Copa Airlines ($562), and American Airlines ($604).

  • 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, April is the cheapest month in which you can book a flight from Ontario to Sao Paulo Guarulhos Intl Airport (average of $687). Flying from Ontario to Sao Paulo Guarulhos Intl Airport in December is currently the most expensive (average of $1,209). 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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