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$436+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
GRU — ONT
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$855
(Mytrip)

One-way from

$436
(Mytrip)

Popular in

July

Cheapest in

November

Average price

$710
Provider with most accurate pricing for Sao Paulo (SAO)-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Sao Paulo (SAO)-Los Angeles flights.
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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. 11% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 14, 2026.

This Mytrip deal was found by Cheapflights users on 1/13. 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 2/611:59 pm
GRU
-
ONT
3 stops27h 53m
Multiple Airlines
Fri 2/1311:02 pm
ONT
-
GRU
3 stops23h 08m
Multiple Airlines
Deal found 1/13$847
This Mytrip deal was found by Cheapflights users on 1/11. 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.
Mon 2/91:00 am
GRU
-
ONT
3 stops26h 52m
Multiple Airlines
Tue 2/1711:02 pm
ONT
-
GRU
3 stops29h 13m
Multiple Airlines
Deal found 1/11$875
This Mytrip deal was found by Cheapflights users on 1/13. 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 1/261:00 am
GRU
-
ONT
3 stops26h 52m
Multiple Airlines
Mon 2/212:42 am
ONT
-
GRU
3 stops21h 43m
Multiple Airlines
Deal found 1/13$888
This Mytrip deal was found by Cheapflights users on 1/13. 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 2/2011:59 pm
GRU
-
ONT
3 stops27h 53m
Multiple Airlines
Fri 2/2711:02 pm
ONT
-
GRU
3 stops23h 08m
Multiple Airlines
Deal found 1/13$895
This Mytrip deal was found by Cheapflights users on 1/11. 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.
Thu 2/267:45 pm
GRU
-
ONT
3 stops32h 07m
Multiple Airlines
Tue 3/1012:42 am
ONT
-
GRU
2 stops24h 58m
Multiple Airlines
Deal found 1/11$993
This Mytrip deal was found by Cheapflights users on 1/11. 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 2/48:55 am
GRU
-
ONT
2 stops18h 57m
Multiple Airlines
Tue 2/1012:42 am
ONT
-
GRU
2 stops23h 58m
Multiple Airlines
Deal found 1/11$1,032

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 January 14, 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 2/9

1:00 am-10:52 pm

3 stops26h 52m

Ontario

Tue 2/17

11:02 pm-9:15 am

3 stops29h 13m

$974

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Thu 2/26

8:55 am-10:52 pm

2 stops18h 57m

Ontario

Tue 3/10

12:42 am-5:40 am

2 stops24h 58m

$1,017

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 2/4

8:55 am-10:52 pm

2 stops18h 57m

Ontario

Tue 2/10

12:42 am-5:40 am

2 stops23h 58m

$1,032

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 2/16

7:45 pm-10:52 pm

3 stops32h 07m

Ontario

Sun 2/22

12:42 am-4:30 pm

3 stops34h 48m

$1,074

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 3/17

9:45 pm-12:18 pm

2 stops18h 33m

Ontario

Wed 4/15

5:10 am-6:45 am

2 stops21h 35m

$1,104

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 3/23

9:45 pm-12:18 pm

2 stops18h 33m

Ontario

Tue 3/31

6:00 am-6:45 am

1 stop20h 45m

$1,104

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Tue 3/10

9:45 pm-12:18 pm

2 stops18h 33m

Ontario

Fri 3/20

6:00 am-9:30 am

1 stop23h 30m

$1,123

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Sun 5/10

1:45 am-7:23 pm

3 stops21h 38m

$501

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 5/11

9:50 pm-12:22 pm

2 stops18h 32m

$590

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 5/11

10:00 pm-10:09 am

1 stop16h 09m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 19 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 $284). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in February is currently the most expensive (average of $459). 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.

  • 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 $284). Flying from Sao Paulo Guarulhos Intl Airport to Ontario in February is currently the most expensive (average of $459). 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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