HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$337+ Cheap flights from Guarulhos Intl, Brazil (GRU) to Ontario (ONT)

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
GRU — ONT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Guarulhos Intl 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 Guarulhos Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Guarulhos Intl (GRU) to Ontario (ONT). 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 September 16, 2025.

Round-trip from

$1,043
(LATAM Airlines)

One-way from

$337
(Mytrip)

Popular in

July

Cheapest in

November

Average price

$537
From Sao Paulo Guarulhos Intl to Ontario
Search Deals
One-way flight from Sao Paulo Guarulhos Intl to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Guarulhos Intl to Ontario

Cheapest flights from Guarulhos Intl to Ontario
Explore the most affordable flight options available from Guarulhos Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. 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 10/292:40 amGRU - ONT
3 stops23h 15mAvianca
Thu 11/610:30 pmONT - GRU
3 stops26h 10mAvianca
Deal found 9/15$1,046
This United Airlines deal was found by Cheapflights users on 9/16. 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 12/1710:15 pmGRU - ONT
1 stop28h 37mUnited Airlines
Wed 1/147:00 amONT - GRU
1 stop19h 15mUnited Airlines
Deal found 9/16$1,078
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/2410:15 pmGRU - ONT
1 stop28h 37mUnited Airlines
Wed 1/77:00 amONT - GRU
1 stop19h 15mUnited Airlines
Deal found 9/15$1,084
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/2410:15 pmGRU - ONT
1 stop28h 37mUnited Airlines
Mon 1/126:00 amONT - GRU
1 stop22h 30mUnited Airlines
Deal found 9/14$1,088
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/239:45 pmGRU - ONT
1 stop29h 40mUnited Airlines
Mon 1/511:59 pmONT - GRU
1 stop26h 16mUnited Airlines
Deal found 9/15$1,109
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/179:45 pmGRU - ONT
1 stop29h 40mUnited Airlines
Tue 1/66:00 amONT - GRU
1 stop22h 30mUnited Airlines
Deal found 9/14$1,113
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 11/1710:15 pmGRU - ONT
2 stops19h 22mUnited Airlines
Sun 11/306:05 amONT - GRU
1 stop22h 25mUnited Airlines
Deal found 9/16$1,118
This Priceline deal was found by Cheapflights users on 9/15. 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.
Mon 10/61:45 amGRU - ONT
2 stops24h 10mAvianca
Tue 10/1411:25 pmONT - GRU
2 stops21h 15mAvianca
Deal found 9/15$1,126
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/1410:15 pmGRU - ONT
2 stops19h 18mUnited Airlines
Thu 11/277:00 amONT - GRU
1 stop19h 15mUnited Airlines
Deal found 9/14$1,128

Cheapflights Fare Finder

 
Customize your flight search to find flights from Guarulhos Intl 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Sao Paulo Guarulhos Intl Airport to Ontario that are best for you.

Fly from

Guarulhos Intl

Fly to

Ontario

Route

Depart

Return

Price

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 2/10

11:45 pm-11:38 am

1 stop16h 53m

Ontario

Tue 2/24

1:00 pm-9:35 am

1 stop15h 35m

$1,046

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 2/9

10:15 pm-12:47 pm

2 stops19h 32m

Ontario

Sun 2/22

6:00 am-9:30 am

1 stop22h 30m

$1,068

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 2/2

10:15 pm-12:47 pm

2 stops19h 32m

Ontario

Sun 2/15

6:00 am-9:30 am

1 stop22h 30m

$1,074

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/17

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Tue 12/30

6:04 am-9:30 am

1 stop22h 26m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 12/15

10:15 pm-9:49 pm

1 stop28h 34m

Ontario

Tue 12/30

11:59 pm-7:15 am

1 stop26h 16m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 12/16

10:15 pm-12:17 pm

2 stops19h 02m

Ontario

Tue 12/30

11:59 pm-7:15 am

1 stop26h 16m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Wed 1/14

7:00 am-7:15 am

1 stop19h 15m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Thu 1/15

6:00 am-9:30 am

1 stop22h 30m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/17

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Wed 1/14

7:00 am-7:15 am

1 stop19h 15m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 2/2

10:15 pm-12:47 pm

2 stops19h 32m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 19 results
1
2

Best time to book a flight from Guarulhos Intl to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Sao Paulo Guarulhos Intl Airport to Ontario (average of $246). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in March is currently the most expensive (average of $327). 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 Guarulhos Intl 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 into for flights to Ontario from Sao Paulo Guarulhos Intl?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Sao Paulo Guarulhos Intl. Booking flights from Sao Paulo Guarulhos Intl to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from Sao Paulo Guarulhos Intl from 0 different airlines.

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

    Airlines like LATAM Airlines and United Airlines fly from Sao Paulo Guarulhos Intl Airport to Ontario in about 16h 53m. The time it takes to get you to your destination can typically vary by up to 2h 39m. The distance between Sao Paulo Guarulhos Intl Airport and Ontario is about 6122 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Sao Paulo Guarulhos Intl Airport to Ontario (average of $246). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in March is currently the most expensive (average of $327). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.