$129 Cheap Flights from Pasco (PSC) to Ontario (ONT)

View $129 flight on Wed, Mar 11, 2026Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Pasco to Ontario (PSC-ONT)

Prices were available within the past 7 days and start at $129 for one-way flights and $256 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Fri, Jun 5 - Tue, Jun 9
PSC
Pasco
ONT
Ontario
$256 Roundtrip, found 10 hours ago
$256
Roundtrip
found 10 hours ago
Select Bargain Flight flight, departing Fri, Jun 5 from Pasco to Ontario, returning Tue, Jun 9, priced at $256 found 10 hours ago
Bargain Flight
Sat, Feb 7 - Sat, Feb 28
PSC
Pasco
ONT
Ontario
$256 Roundtrip, found 17 hours ago
$256
Roundtrip
found 17 hours ago
Select Bargain Flight flight, departing Sat, Feb 7 from Pasco to Ontario, returning Sat, Feb 28, priced at $256 found 17 hours ago
Alaska Airlines
Mon, Jan 5 - Wed, Jan 7
PSC
Pasco
ONT
Ontario
$258 Roundtrip, found 5 hours ago
$258
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Pasco to Ontario, returning Wed, Jan 7, priced at $258 found 5 hours ago
American Airlines
Thu, Jan 29 - Tue, Feb 3
PSC
Pasco
ONT
Ontario
$259 Roundtrip, found 10 hours ago
$259
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Jan 29 from Pasco to Ontario, returning Tue, Feb 3, priced at $259 found 10 hours ago
United
Thu, Nov 20 - Fri, Nov 28
PSC
Pasco
ONT
Ontario
$259 Roundtrip, found 4 hours ago
$259
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Nov 20 from Pasco to Ontario, returning Fri, Nov 28, priced at $259 found 4 hours ago
Delta
Mon, Nov 24 - Thu, Nov 27
PSC
Pasco
ONT
Ontario
$259 Roundtrip, found 1 hour ago
$259
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Nov 24 from Pasco to Ontario, returning Thu, Nov 27, priced at $259 found 1 hour ago
Delta
Thu, Nov 27 - Sat, Dec 6
PSC
Pasco
ONT
Ontario
$260 Roundtrip, found 3 days ago
$260
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Nov 27 from Pasco to Ontario, returning Sat, Dec 6, priced at $260 found 3 days ago
American Airlines
Thu, Jan 29 - Tue, Feb 3
PSC
Pasco
ONT
Ontario
$261 Roundtrip, found 10 hours ago
$261
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Jan 29 from Pasco to Ontario, returning Tue, Feb 3, priced at $261 found 10 hours ago
American Airlines
Thu, Dec 4 - Tue, Dec 9
PSC
Pasco
ONT
Ontario
$263 Roundtrip, found 10 hours ago
$263
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Dec 4 from Pasco to Ontario, returning Tue, Dec 9, priced at $263 found 10 hours ago
Alaska Airlines
Mon, Dec 8 - Fri, Dec 12
PSC
Pasco
ONT
Ontario
$263 Roundtrip, found 1 day ago
$263
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Dec 8 from Pasco to Ontario, returning Fri, Dec 12, priced at $263 found 1 day ago

Find the cheapest month to fly from Pasco (PSC) to Ontario (ONT)

May is typically the cheapest month to fly

From $198 - $352 per traveler.

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. Average driving time to city center is 42 minutes. Flights from $408
SNA
John Wayne
Average driving time to city center42 min
Flights from $408
Flights from Pasco (PSC) to Ontario (ONT)
Origin airport
Tri-Cities
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$255
Distance
846 mi

Pasco to Ontario Flights

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

 

The best time to book a flight from Pasco to Ontario

Sunday is one of the best days to book for cheap flights from Pasco 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 Pasco 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 Pasco to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 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 Pasco 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 Pasco 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 Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Lock in a cheap one-way flight from $129 or cheap return flight from $256 from Tri-Cities Airport (PSC) 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 Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)?
Traveling in June is a good way to save, as it's the cheapest month for flights between PSC and ONT. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from PSC to ONT. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll have to book a flight with a layover if you're traveling from Tri-Cities Airport (PSC) 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 an option that works for you.
What day of the week has the most flights from PSC to ONT?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on a number of factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid possible delays on the Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being 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.
What airports do you fly into for Ontario from Tri-Cities Airport (PSC)?
You can touch down at Los Angeles Intl. Airport (LAX) or Bob Hope Airport (BUR) when traveling to Ontario on a direct flight from Tri-Cities Airport (PSC).
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute fares from PSC to ONT are usually more expensive. To secure the best rates, start searching for flights as soon as possible. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a PSC to ONT flight and hotel package?
You can save money by securing a PSC 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 it all in one convenient place. Once you've chosen your ideal accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Los Angeles - Ontario Intl. Airport (ONT)?
You can usually cancel or reschedule your PSC to ONT flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.