$655 Cheap Flights from Taipei (TSA) to Ontario (ONT)

View $655 flight on Tue, Sep 9, 2025Opens in a new window

Popular airlines from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Taipei to Ontario (TSA-ONT)

Prices were available within the past 7 days and start at $655 for one-way flights and $941 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Mon, Sep 1 - Sun, Sep 14
TSA
Taipei
ONT
Ontario
$941 Roundtrip, found 4 days ago
$941
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Mon, Sep 1 from Taipei to Ontario, returning Sun, Sep 14, priced at $941 found 4 days ago
All Nippon Airways
Tue, Sep 9 - Tue, Sep 23
TSA
Taipei
ONT
Ontario
$947 Roundtrip, found 6 hours ago
$947
Roundtrip
found 6 hours ago
Select All Nippon Airways flight, departing Tue, Sep 9 from Taipei to Ontario, returning Tue, Sep 23, priced at $947 found 6 hours ago
All Nippon Airways
Wed, Nov 19 - Wed, Apr 8
TSA
Taipei
ONT
Ontario
$948 Roundtrip, found 17 hours ago
$948
Roundtrip
found 17 hours ago
Select All Nippon Airways flight, departing Wed, Nov 19 from Taipei to Ontario, returning Wed, Apr 8, priced at $948 found 17 hours ago
All Nippon Airways
Mon, Sep 1 - Sun, Sep 14
TSA
Taipei
ONT
Ontario
$949 Roundtrip, found 4 days ago
$949
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Mon, Sep 1 from Taipei to Ontario, returning Sun, Sep 14, priced at $949 found 4 days ago
All Nippon Airways
Wed, Apr 22 - Mon, May 18
TSA
Taipei
ONT
Ontario
$950 Roundtrip, found 2 days ago
$950
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Wed, Apr 22 from Taipei to Ontario, returning Mon, May 18, priced at $950 found 2 days ago
All Nippon Airways
Mon, Sep 1 - Sun, Sep 14
TSA
Taipei
ONT
Ontario
$951 Roundtrip, found 4 days ago
$951
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Mon, Sep 1 from Taipei to Ontario, returning Sun, Sep 14, priced at $951 found 4 days ago
All Nippon Airways
Tue, Sep 9 - Tue, Sep 23
TSA
Taipei
ONT
Ontario
$953 Roundtrip, found 6 hours ago
$953
Roundtrip
found 6 hours ago
Select All Nippon Airways flight, departing Tue, Sep 9 from Taipei to Ontario, returning Tue, Sep 23, priced at $953 found 6 hours ago
All Nippon Airways
Tue, Dec 2 - Tue, Jan 6
TSA
Taipei
ONT
Ontario
$954 Roundtrip, found 1 day ago
$954
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Tue, Dec 2 from Taipei to Ontario, returning Tue, Jan 6, priced at $954 found 1 day ago
All Nippon Airways
Wed, Nov 26 - Wed, Dec 3
TSA
Taipei
ONT
Ontario
$956 Roundtrip, found 2 days ago
$956
Roundtrip
found 2 days ago
Select All Nippon Airways flight, departing Wed, Nov 26 from Taipei to Ontario, returning Wed, Dec 3, priced at $956 found 2 days ago
EVA Airways
Mon, Sep 1 - Sun, Sep 14
TSA
Taipei
ONT
Ontario
$1,017 Roundtrip, found 4 days ago
$1,017
Roundtrip
found 4 days ago
Select EVA Airways flight, departing Mon, Sep 1 from Taipei to Ontario, returning Sun, Sep 14, priced at $1,017 found 4 days ago
Flights from Taipei (TSA) to Ontario (ONT)
Origin airport
Songshan
Destination airport
Los Angeles - Ontario Intl.
Roundtrip price
$940
Distance
6804 mi

Taipei to Ontario Flights

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

 

The best time to book a flight from Taipei to Ontario

Sunday is one of the best days to book for cheap flights from Taipei 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 Taipei 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 Taipei to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $655 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 Taipei 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 Taipei 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.

 

Frequently asked questions

How much does a flight from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from TSA to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from TSA to ONT?
The cheapest flights from TSA to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT)?
There's no direct route from Taipei (TSA-Songshan) to Los Angeles - Ontario Intl. Airport (ONT). However, there are other airports that offer nonstop flights. Begin your journey at Taoyuan Intl. Airport (TPE) and travel straight to Ontario without a layover.
What is the cheapest airline that flies from TSA to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from TSA to ONT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll need to catch a flight with a layover if you're traveling from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from TSA to ONT?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT)?
Select a flight from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute bookings from TSA to ONT are typically more expensive. To secure the lowest rates, start looking for flights as soon as possible. That said, if your travel plans are flexible, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a TSA to ONT flight and hotel package?
You'll generally save money by securing a TSA to ONT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your ideal flights and accommodations, you can add extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Songshan Airport (TSA) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, it's possible to cancel or reschedule your TSA to ONT flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.