$150 Cheap Flights from Ontario (ONT) to Pasco (PSC)

View $150 flight on Fri, May 1, 2026Opens in a new window

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

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Cheap Flights from Ontario to Pasco (ONT-PSC)

Prices were available within the past 7 days and start at $150 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Apr 30 - Sat, May 2
ONT
Ontario
PSC
Pasco
$299 Roundtrip, just found
$299
Roundtrip
just found
Select Delta flight, departing Thu, Apr 30 from Ontario to Pasco, returning Sat, May 2, priced at $299 just found
Alaska Airlines
Wed, Jul 1 - Sat, Jul 4
ONT
Ontario
PSC
Pasco
$299 Roundtrip, found 2 hours ago
$299
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Jul 1 from Ontario to Pasco, returning Sat, Jul 4, priced at $299 found 2 hours ago
United
Thu, Jul 23 - Tue, Jul 28
ONT
Ontario
PSC
Pasco
$299 Roundtrip, found 2 hours ago
$299
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Jul 23 from Ontario to Pasco, returning Tue, Jul 28, priced at $299 found 2 hours ago
American Airlines
Fri, May 1 - Mon, May 4
ONT
Ontario
PSC
Pasco
$299 Roundtrip, found 3 hours ago
$299
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, May 1 from Ontario to Pasco, returning Mon, May 4, priced at $299 found 3 hours ago
Delta
Fri, May 22 - Thu, May 28
ONT
Ontario
PSC
Pasco
$300 Roundtrip, found 2 hours ago
$300
Roundtrip
found 2 hours ago
Select Delta flight, departing Fri, May 22 from Ontario to Pasco, returning Thu, May 28, priced at $300 found 2 hours ago
Delta
Fri, Aug 7 - Sat, Aug 15
ONT
Ontario
PSC
Pasco
$304 Roundtrip, found 1 hour ago
$304
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Aug 7 from Ontario to Pasco, returning Sat, Aug 15, priced at $304 found 1 hour ago
Bargain Flight
Sat, Aug 8 - Sat, Aug 15
ONT
Ontario
PSC
Pasco
$307 Roundtrip, found 5 hours ago
$307
Roundtrip
found 5 hours ago
Select Bargain Flight flight, departing Sat, Aug 8 from Ontario to Pasco, returning Sat, Aug 15, priced at $307 found 5 hours ago
Alaska Airlines
Wed, Apr 22 - Mon, Apr 27
ONT
Ontario
PSC
Pasco
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Ontario to Pasco, returning Mon, Apr 27, priced at $308 found 1 day ago
Delta
Fri, May 1 - Sun, May 3
ONT
Ontario
PSC
Pasco
$311 Roundtrip, just found
$311
Roundtrip
just found
Select Delta flight, departing Fri, May 1 from Ontario to Pasco, returning Sun, May 3, priced at $311 just found
Delta
Fri, May 22 - Mon, May 25
ONT
Ontario
PSC
Pasco
$312 Roundtrip, found 4 hours ago
$312
Roundtrip
found 4 hours ago
Select Delta flight, departing Fri, May 22 from Ontario to Pasco, returning Mon, May 25, priced at $312 found 4 hours ago

Alternative airports near Pasco

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

Select flight to Tri-Cities PSC. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $486
PSC
Tri-Cities
CheapestClosest
Average driving time to city center4 min
Flights from $486

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

May is typically the cheapest month to fly

From $198 - $328 per traveler.

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) cost?
You can find cheap one-way flights from $150 and cheap return flights from $299 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) with Expedia. One-way flights typically cost between $166 and $1042, and return flights often range between $341 and $1254. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
May is the cheapest month to fly from Ontario, CA (ONT) to Pasco, WA (PSC), with average round-trip fares around $281. This price is about 21% lower than the average throughout the year, as May is often a quieter travel month. Other affordable months to consider are April and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
Enter ONT to PSC and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
Delta is one of the cheapest airlines offering connecting flights from Ontario, CA (ONT) to Pasco, WA (PSC), with round-trip tickets starting from around $180. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
The best time to fly from Ontario, CA (ONT) to Pasco, WA (PSC) is in April or May, with average return flight prices around $281. These months offer a nice balance of affordability and pleasant weather, making them great options for your trip.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
The earliest flight from Los Angeles - Ontario International Airport (ONT) to Tri-Cities Airport (PSC) typically departs at around 5:00 AM, operated by Alaska Airlines. This seasonal service is available in November, allowing you to kick off your day early in Pasco. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
For flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities), the most popular departure times are from 6am to 9am. This time is preferred by around 44% of passengers, making it ideal for those who want to start their day early. Airlines like United Airlines, Delta Airlines, and Alaska Airlines provide services during this window.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
Flights from ONT to PSC with one stop typically take around 7 hours 30 minutes, covering approximately 847 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
First class seats are offered on the ONT to PSC route. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Pasco from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into Tri-Cities (PSC) to reach Pasco. Some flights may connect through major hubs like Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), San Francisco Intl. (SFO) before reaching Pasco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pasco, WA (PSC-Tri-Cities) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$298
Distance
846 mi

Book with confidence

Ontario to Pasco Flights

The cheapest times to fly from Ontario to Pasco

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

 

The best time to book a flight from Ontario to Pasco

Sunday is one of the best days to book for cheap flights from Ontario to Pasco: 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 Ontario to Pasco

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 Ontario to Pasco in 2026. You can also book with separate airlines for your outbound and return journeys, from $150 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 Ontario to Pasco 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 Ontario to Pasco 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.

 

Ontario to Pasco Flights

*Flight schedules are subject to change.

*Available to One Key members.