$603 Cheap Flights from Singapore (SIN) to Ontario (ONT)

View $603 flight on Tue, Mar 3, 2026Opens in a new window

Popular airlines from Singapore Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Singapore to Ontario (SIN-ONT)

Prices were available within the past 7 days and start at $603 for one-way flights and $968 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Airlines
Sat, Jan 31 - Thu, Feb 5
SIN
Singapore
ONT
Ontario
$968 Roundtrip, just found
$968
Roundtrip
just found
Select China Airlines flight, departing Sat, Jan 31 from Singapore to Ontario, returning Thu, Feb 5, priced at $968 just found
China Airlines
Thu, Apr 16 - Thu, Apr 30
SIN
Singapore
ONT
Ontario
$970 Roundtrip, found 19 hours ago
$970
Roundtrip
found 19 hours ago
Select China Airlines flight, departing Thu, Apr 16 from Singapore to Ontario, returning Thu, Apr 30, priced at $970 found 19 hours ago
China Airlines
Fri, Nov 21 - Sat, Nov 29
SIN
Singapore
ONT
Ontario
$971 Roundtrip, found 1 day ago
$971
Roundtrip
found 1 day ago
Select China Airlines flight, departing Fri, Nov 21 from Singapore to Ontario, returning Sat, Nov 29, priced at $971 found 1 day ago
United
Thu, Jan 29 - Mon, Feb 9
SIN
Singapore
ONT
Ontario
$977 Roundtrip, found 3 days ago
$977
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 29 from Singapore to Ontario, returning Mon, Feb 9, priced at $977 found 3 days ago
United
Thu, Mar 26 - Sun, Apr 5
SIN
Singapore
ONT
Ontario
$980 Roundtrip, found 5 hours ago
$980
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Mar 26 from Singapore to Ontario, returning Sun, Apr 5, priced at $980 found 5 hours ago
United
Mon, Jan 26 - Wed, Feb 4
SIN
Singapore
ONT
Ontario
$981 Roundtrip, found 5 days ago
$981
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jan 26 from Singapore to Ontario, returning Wed, Feb 4, priced at $981 found 5 days ago
United
Mon, Jan 26 - Wed, Feb 4
SIN
Singapore
ONT
Ontario
$983 Roundtrip, found 5 days ago
$983
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jan 26 from Singapore to Ontario, returning Wed, Feb 4, priced at $983 found 5 days ago
STARLUX Airlines
Fri, Jan 16 - Sat, Jan 17
SIN
Singapore
ONT
Ontario
$1,014 Roundtrip, found 7 hours ago
$1,014
Roundtrip
found 7 hours ago
Select STARLUX Airlines flight, departing Fri, Jan 16 from Singapore to Ontario, returning Sat, Jan 17, priced at $1,014 found 7 hours ago
EVA Airways
Mon, Jan 26 - Wed, Feb 4
SIN
Singapore
ONT
Ontario
$1,015 Roundtrip, found 5 days ago
$1,015
Roundtrip
found 5 days ago
Select EVA Airways flight, departing Mon, Jan 26 from Singapore to Ontario, returning Wed, Feb 4, priced at $1,015 found 5 days ago
American Airlines
Mon, Jan 26 - Wed, Feb 4
SIN
Singapore
ONT
Ontario
$1,241 Roundtrip, found 5 days ago
$1,241
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Jan 26 from Singapore to Ontario, returning Wed, Feb 4, priced at $1,241 found 5 days ago

Alternative airports near Ontario

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

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $971
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $971

Frequently asked questions

How much does a flight from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Secure a cheap one-way flight from $603 or cheap return flight from $968 from Changi Airport (SIN) 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 Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT)?
Traveling in January is a good way to save, as it's the cheapest month for flights between SIN and ONT. You'll typically find the lowest prices during the off-season.
How many flights per day from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT)?
There aren't any daily direct flights from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from SIN to ONT?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, carrier 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 Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT)?
Opt for a flight from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the risk of cancellations. Later departures 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 Changi Airport (SIN)?
Los Angeles Intl. Airport (LAX) is the only airport in Ontario with direct flights from Changi Airport (SIN). Browse your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute bookings from SIN to ONT are usually more expensive. To lock in the lowest rates, start searching for flights early. That said, if you're flexible with your travel dates, you may score a cheap ticket right before your trip.
Is it cheaper to book a SIN to ONT flight and hotel package?
You'll typically save money by securing a SIN to ONT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal accommodations and flights, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Changi Airport (SIN) to Los Angeles - Ontario Intl. Airport (ONT)?
It's generally possible to reschedule or cancel your SIN to ONT flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Changi
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
China Airlines, Japan Airlines, STARLUX Airlines, United
Roundtrip price
$968
Distance
8796 mi

Book with confidence

Singapore to Ontario Flights

The cheapest times to fly from Singapore 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 Singapore to Ontario are during the month of January. You can find some of the cheapest flights from Singapore to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Singapore to Ontario

Sunday is one of the best days to book for cheap flights from Singapore 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 Singapore 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 Singapore to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $603 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 Singapore 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 Singapore 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.

 

Singapore to Ontario Flights

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*Available to One Key members.