$583 Cheap Flights from São Paulo (GRU) to Ontario (ONT)

View $583 flight on Tue, Mar 24, 2026Opens in a new window

Popular airlines from São Paulo/Guarulhos Intl. Airport to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from São Paulo to Ontario (GRU-ONT)

Prices were available within the past 7 days and start at $583 for one-way flights and $1,045 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Mar 31 - Tue, Apr 7
GRU
Sao Paulo
ONT
Ontario
$1,045 Roundtrip, found 23 hours ago
$1,045
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Tue, Mar 31 from Sao Paulo to Ontario, returning Tue, Apr 7, priced at $1,045 found 23 hours ago
Delta
Tue, Mar 31 - Tue, Apr 7
GRU
Sao Paulo
ONT
Ontario
$1,045 Roundtrip, found 23 hours ago
$1,045
Roundtrip
found 23 hours ago
Select Delta flight, departing Tue, Mar 31 from Sao Paulo to Ontario, returning Tue, Apr 7, priced at $1,045 found 23 hours ago
United
Tue, Mar 31 - Tue, Apr 7
GRU
Sao Paulo
ONT
Ontario
$1,045 Roundtrip, found 23 hours ago
$1,045
Roundtrip
found 23 hours ago
Select United flight, departing Tue, Mar 31 from Sao Paulo to Ontario, returning Tue, Apr 7, priced at $1,045 found 23 hours ago
United
Mon, Mar 23 - Mon, Mar 30
GRU
Sao Paulo
ONT
Ontario
$1,066 Roundtrip, found 13 hours ago
$1,066
Roundtrip
found 13 hours ago
Select United flight, departing Mon, Mar 23 from Sao Paulo to Ontario, returning Mon, Mar 30, priced at $1,066 found 13 hours ago
LATAM Airlines Group
Tue, Mar 31 - Tue, Apr 7
GRU
Sao Paulo
ONT
Ontario
$1,070 Roundtrip, found 23 hours ago
$1,070
Roundtrip
found 23 hours ago
Select LATAM Airlines Group flight, departing Tue, Mar 31 from Sao Paulo to Ontario, returning Tue, Apr 7, priced at $1,070 found 23 hours ago
American Airlines
Tue, Apr 14 - Sun, Apr 26
GRU
Sao Paulo
ONT
Ontario
$1,080 Roundtrip, found 5 days ago
$1,080
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Apr 14 from Sao Paulo to Ontario, returning Sun, Apr 26, priced at $1,080 found 5 days ago
American Airlines
Sun, Mar 1 - Thu, Mar 19
GRU
Sao Paulo
ONT
Ontario
$1,085 Roundtrip, found 11 hours ago
$1,085
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sun, Mar 1 from Sao Paulo to Ontario, returning Thu, Mar 19, priced at $1,085 found 11 hours ago
American Airlines
Sun, Mar 1 - Thu, Mar 19
GRU
Sao Paulo
ONT
Ontario
$1,104 Roundtrip, found 11 hours ago
$1,104
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sun, Mar 1 from Sao Paulo to Ontario, returning Thu, Mar 19, priced at $1,104 found 11 hours ago
United
Sun, Mar 22 - Mon, Mar 30
GRU
Sao Paulo
ONT
Ontario
$1,107 Roundtrip, found 13 hours ago
$1,107
Roundtrip
found 13 hours ago
Select United flight, departing Sun, Mar 22 from Sao Paulo to Ontario, returning Mon, Mar 30, priced at $1,107 found 13 hours ago
avianca
Tue, Mar 31 - Tue, Apr 7
GRU
Sao Paulo
ONT
Ontario
$1,447 Roundtrip, found 23 hours ago
$1,447
Roundtrip
found 23 hours ago
Select avianca flight, departing Tue, Mar 31 from Sao Paulo to Ontario, returning Tue, Apr 7, priced at $1,447 found 23 hours ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $1,580
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $1,580

Frequently asked questions

How much does a flight from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Secure a cheap one-way flight from $583 or cheap return flight from $1,045 from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT)?
Flying in March is a great way to save, as it's the cheapest month for flights between GRU and ONT. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from GRU to ONT. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT)?
Nonstop flights from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GRU to ONT?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT)?
Select a flight from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the likelihood of delays. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Ontario from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU)?
If you're taking a direct flight from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Ontario, Los Angeles Intl. Airport (LAX) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Waiting until right before your break to book your flight from GRU to ONT generally means paying more. While you may come across some last-minute discounts, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of snagging a bargain.
Is it cheaper to book a GRU to ONT flight and hotel package?
Compared with arranging hotels and flights separately, booking a GRU to ONT flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place will take the hassle out of travel planning. Just secure your flights and select from our wide range of hotels, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Guarulhos - Governor Andre Franco Montoro Intl. Airport (GRU) to Los Angeles - Ontario Intl. Airport (ONT)?
In most instances, you're able to reschedule or cancel your GRU to ONT flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Origin airport
Guarulhos - Governor André Franco Montoro Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Air Canada, American Airlines, Delta, LATAM Airlines Group, United, avianca
Roundtrip price
$1,044
Distance
6125 mi

Book with confidence

São Paulo to Ontario Flights

The cheapest times to fly from São Paulo to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from São Paulo to Ontario are during the month of March. You can find some of the cheapest flights from São Paulo to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from São Paulo to Ontario

Sunday is one of the best days to book for cheap flights from São Paulo to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from São Paulo to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from São Paulo to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $583 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap São Paulo to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your São Paulo to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

São Paulo to Ontario Flights

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*Available to One Key members.