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$435+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
GRU — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$879
(Mytrip)

One-way from

$435
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$569
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 ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 14, 2025.

This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/304:50 pmGRU - ONT
3 stops33h 05mAvianca
Sat 9/611:25 pmONT - GRU
3 stops35h 55mAvianca
Deal found 8/14$879
This Mytrip deal was found by Cheapflights users on 8/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:45 amGRU - ONT
3 stops24h 10mAvianca
Thu 9/1811:25 pmONT - GRU
3 stops26h 10mAvianca
Deal found 8/14$940
This Mytrip deal was found by Cheapflights users on 8/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/81:45 amGRU - ONT
3 stops24h 10mAvianca
Tue 9/1611:25 pmONT - GRU
3 stops26h 10mAvianca
Deal found 8/12$963
This United Airlines deal was found by Cheapflights users on 8/13. 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 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 1/76:02 amONT - GRU
1 stop22h 28mUnited Airlines
Deal found 8/13$1,028
This United Airlines deal was found by Cheapflights users on 8/11. 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 12/2410:15 pmGRU - ONT
1 stop28h 37mUnited Airlines
Thu 1/87:00 amONT - GRU
1 stop19h 15mUnited Airlines
Deal found 8/11$1,029
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Mon 12/1510:15 pmGRU - ONT
2 stops19h 02mUnited Airlines
Tue 1/207:00 amONT - GRU
1 stop19h 15mUnited Airlines
Deal found 8/14$1,030
This United Airlines deal was found by Cheapflights users on 8/13. 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 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
Fri 1/96:02 amONT - GRU
1 stop22h 28mUnited Airlines
Deal found 8/13$1,068
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:15 pmGRU - ONT
2 stops19h 17mUnited Airlines
Sun 1/116:02 amONT - GRU
1 stop22h 28mUnited Airlines
Deal found 8/12$1,076
This United Airlines deal was found by Cheapflights users on 8/13. 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 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 1/56:04 amONT - GRU
1 stop22h 26mUnited Airlines
Deal found 8/13$1,078
This United Airlines deal was found by Cheapflights users on 8/11. 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 12/249:45 pmGRU - ONT
1 stop29h 45mUnited Airlines
Tue 1/66:02 amONT - GRU
1 stop22h 28mUnited Airlines
Deal found 8/11$1,079
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/24:10 amGRU - ONT
2 stops21h 45mAvianca
Tue 9/911:25 pmONT - GRU
2 stops21h 15mAvianca
Deal found 8/13$1,091
This LATAM Airlines deal was found by Cheapflights users on 8/12. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:30 pmGRU - ONT
1 stop16h 56mLATAM Airlines
Wed 11/57:05 amONT - GRU
1 stop17h 35mLATAM Airlines
Deal found 8/12$1,092

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 August 14, 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

Sat 8/30

4:50 pm-9:55 pm

3 stops33h 05m

Ontario

Sat 9/6

11:25 pm-3:20 pm

3 stops35h 55m

$879

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 9/10

1:45 am-9:55 pm

3 stops24h 10m

Ontario

Thu 9/18

11:25 pm-5:35 am

3 stops26h 10m

$940

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 9/8

1:45 am-9:55 pm

3 stops24h 10m

Ontario

Tue 9/16

11:25 pm-5:35 am

3 stops26h 10m

$963

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Wed 1/7

6:02 am-9:30 am

1 stop22h 28m

$1,028

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Thu 1/8

7:00 am-7:15 am

1 stop19h 15m

$1,029

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Mon 12/15

10:15 pm-12:17 pm

2 stops19h 02m

Ontario

Tue 1/20

7:00 am-7:15 am

1 stop19h 15m

$1,030

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Fri 1/9

6:02 am-9:30 am

1 stop22h 28m

$1,068

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/10

10:15 pm-12:32 pm

2 stops19h 17m

Ontario

Sun 1/11

6:02 am-9:30 am

1 stop22h 28m

$1,076

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Tue 1/6

6:02 am-9:30 am

1 stop22h 28m

$1,078

Sao PauloOntario

GRU - ONT

GRUONT

Sao Paulo Guarulhos Intl

Wed 12/24

10:15 pm-9:52 pm

1 stop28h 37m

Ontario

Mon 1/5

6:04 am-9:30 am

1 stop22h 26m

$1,078

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 20 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, 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 $328). 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, 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 $328). 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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