$438 Cheap Flights from Basel (BSL) to Ontario (ONT)

View $438 flight on Fri, Feb 13, 2026Opens in a new window

Popular airlines from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Basel to Ontario (BSL-ONT)

Prices were available within the past 7 days and start at $438 for one-way flights and $1,442 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, Jan 8 - Fri, Feb 13
BSL
Basel
ONT
Ontario
$1,442 Roundtrip, found 5 days ago
$1,442
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Basel to Ontario, returning Fri, Feb 13, priced at $1,442 found 5 days ago
Delta
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,458 Roundtrip, found 6 days ago
$1,458
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,458 found 6 days ago
Delta
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,498 Roundtrip, found 6 days ago
$1,498
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,498 found 6 days ago
Delta
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,687 Roundtrip, found 6 days ago
$1,687
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,687 found 6 days ago
Lufthansa
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,782 Roundtrip, found 6 days ago
$1,782
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,782 found 6 days ago
Lufthansa
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,806 Roundtrip, found 6 days ago
$1,806
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,806 found 6 days ago
Lufthansa
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,826 Roundtrip, found 6 days ago
$1,826
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,826 found 6 days ago
Delta
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$1,955 Roundtrip, found 6 days ago
$1,955
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $1,955 found 6 days ago
United
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$2,007 Roundtrip, found 6 days ago
$2,007
Roundtrip
found 6 days ago
Select United flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $2,007 found 6 days ago
Air Dolomiti
Mon, Dec 1 - Sun, Dec 14
BSL
Basel
ONT
Ontario
$2,015 Roundtrip, found 6 days ago
$2,015
Roundtrip
found 6 days ago
Select Air Dolomiti flight, departing Mon, Dec 1 from Basel to Ontario, returning Sun, Dec 14, priced at $2,015 found 6 days ago
Flights from Basel (BSL) to Ontario (ONT)
Origin airport
EuroAirport
Destination airport
Los Angeles - Ontario Intl.
Roundtrip price
$1,441
Distance
5852 mi

Basel to Ontario Flights

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

 

The best time to book a flight from Basel to Ontario

Sunday is one of the best days to book for cheap flights from Basel 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 Basel 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 Basel to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $438 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 Basel 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 Basel 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 EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Get a cheap one-way flight from $438 or cheap return flight from $1,442 from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)?
The cheapest month to fly from BSL to ONT is January, when demand is low. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from BSL to ONT. Then, sort your results by "Price (lowest to highest)" to snap up the best deal available.
How many flights per day from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)?
There aren't any daily direct flights departing from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from BSL to ONT?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, airline 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 EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)?
Opt for a flight from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT) that takes off before 3 PM to reduce the risk of cancellations. Later departures 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 EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from BSL to ONT shortly before your trip is generally more expensive. But if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a BSL to ONT flight and hotel package?
You'll typically save money by booking a BSL 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 preferred accommodations and flights, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from EuroAirport Airport (BSL) to Los Angeles - Ontario Intl. Airport (ONT)?
If you booked your BSL to ONT flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.