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$376+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
GRU — ONT
Mar 11 — Mar 181
Wed 3/11
Wed 3/18
1 adult, Economy
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Cheap 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 February 9, 2026.

This Mytrip deal was found by Cheapflights users on 2/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:00 am
GRU
-
ONT
3 stops25h 37m
Multiple Airlines
Mon 3/1612:42 am
ONT
-
GRU
3 stops22h 43m
Multiple Airlines
Deal found 2/8$813
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:59 pm
GRU
-
ONT
3 stops27h 38m
Multiple Airlines
Fri 3/1311:59 pm
ONT
-
GRU
3 stops23h 11m
Multiple Airlines
Deal found 2/7$851
This Mytrip deal was found by Cheapflights users on 2/6. 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 2/2711:59 pm
GRU
-
ONT
3 stops27h 53m
Multiple Airlines
Fri 3/611:02 pm
ONT
-
GRU
3 stops23h 08m
Multiple Airlines
Deal found 2/6$856
This Mytrip deal was found by Cheapflights users on 2/6. 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 2/2511:59 pm
GRU
-
ONT
3 stops27h 53m
Multiple Airlines
Wed 3/411:02 pm
ONT
-
GRU
3 stops22h 38m
Multiple Airlines
Deal found 2/6$879
This Mytrip deal was found by Cheapflights users on 2/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:00 am
GRU
-
ONT
3 stops21h 52m
Multiple Airlines
Sat 3/711:02 pm
ONT
-
GRU
3 stops24h 15m
Multiple Airlines
Deal found 2/8$881
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:25 pm
GRU
-
ONT
3 stops33h 12m
Multiple Airlines
Wed 3/1811:59 pm
ONT
-
GRU
3 stops22h 41m
Multiple Airlines
Deal found 2/7$894
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/231:00 am
GRU
-
ONT
3 stops26h 52m
Multiple Airlines
Mon 3/212:42 am
ONT
-
GRU
3 stops21h 43m
Multiple Airlines
Deal found 2/7$915
This Mytrip deal was found by Cheapflights users on 2/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/171:20 am
GRU
-
ONT
3 stops26h 32m
Multiple Airlines
Tue 2/2412:42 am
ONT
-
GRU
3 stops27h 33m
Multiple Airlines
Deal found 2/7$926

Find 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 February 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$813
(Mytrip)

One-way from

$376
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$532
Provider with most accurate pricing for Sao Paulo (SAO)-Los Angeles flight deals.
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From Sao Paulo Guarulhos Intl to Ontario
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One-way flight from Sao Paulo Guarulhos Intl to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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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 February 9, 2026.
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

Mon 3/9

1:00 am-10:37 pm

3 stops25h 37m

Ontario

Mon 3/16

12:42 am-3:25 am

3 stops22h 43m

$882

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 3/11

5:25 pm-10:37 pm

3 stops33h 12m

Ontario

Wed 3/18

11:59 pm-2:40 am

3 stops22h 41m

$894

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Fri 6/5

2:20 am-9:45 pm

2 stops23h 25m

Ontario

Sat 7/11

11:35 pm-1:10 am

2 stops21h 35m

$1,083

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 4/1

9:50 pm-12:14 pm

2 stops18h 24m

Ontario

Mon 5/4

10:37 am-9:30 am

2 stops18h 53m

$1,099

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 5/26

8:30 pm-9:54 pm

2 stops29h 24m

Ontario

Mon 6/8

10:59 pm-8:00 pm

2 stops17h 01m

$1,107

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Thu 5/28

9:50 pm-9:40 pm

1 stop27h 50m

Ontario

Thu 6/11

5:55 am-6:30 am

1 stop20h 35m

$1,107

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Thu 5/28

8:30 pm-6:36 pm

2 stops26h 06m

Ontario

Thu 6/11

7:00 am-5:20 am

2 stops18h 20m

$1,107

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 5/13

9:50 pm-9:58 pm

1 stop28h 08m

Ontario

Sun 5/24

1:33 pm-6:30 am

2 stops36h 57m

$1,107

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 5/25

10:50 pm-6:36 pm

1 stop23h 46m

Ontario

Mon 6/8

12:00 pm-8:00 pm

2 stops28h 00m

$1,107

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 5/26

8:30 pm-9:54 pm

2 stops29h 24m

Ontario

Tue 6/9

10:59 pm-8:00 pm

2 stops17h 01m

$1,107

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 24 results
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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, November is the cheapest month in which you can book a flight from Sao Paulo Guarulhos Intl Airport to Ontario (average of $273). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in February is currently the most expensive (average of $461). 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 Avianca and United Airlines fly from Sao Paulo Guarulhos Intl Airport to Ontario in about 18h 24m. The time it takes to get you to your destination can typically vary by up to 5h 01m. 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, November is the cheapest month in which you can book a flight from Sao Paulo Guarulhos Intl Airport to Ontario (average of $273). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in February is currently the most expensive (average of $461). 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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