Cheap Flights from Pasco to Ontario International

Compare Pasco to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Pasco to Ontario International

Looking for a cheap last-minute deal or the best return flight from Pasco Airport to Ontario International Airport? If you want to travel next month, return fares start from $544. Find the lowest prices on one-way and return tickets right here.

Ontario.$505 per passenger.Departing Fri, 3 Jul, returning Sun, 5 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Fri, 3 Jul, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Sun, 5 Jul, arriving in Pasco.Price includes taxes and charges.From $505, select.

Ontario.$508 per passenger.Departing Thu, 25 Jun, returning Tue, 30 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Thu, 25 Jun, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Tue, 30 Jun, arriving in Pasco.Price includes taxes and charges.From $508, select.

Ontario.$509 per passenger.Departing Wed, 23 Sep, returning Tue, 29 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Wed, 23 Sep, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Tue, 29 Sep, arriving in Pasco.Price includes taxes and charges.From $509, select.

Ontario.$544 per passenger.Departing Fri, 15 May, returning Mon, 18 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Fri, 15 May, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Mon, 18 May, arriving in Pasco.Price includes taxes and charges.From $544, select.

Ontario.$590 per passenger.Departing Mon, 27 Apr, returning Fri, 1 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Mon, 27 Apr, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Fri, 1 May, arriving in Pasco.Price includes taxes and charges.From $590, select.

Ontario.$592 per passenger.Departing Sat, 25 Apr, returning Wed, 29 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Sat, 25 Apr, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 29 Apr, arriving in Pasco.Price includes taxes and charges.From $592, select.

Ontario.$1,232 per passenger.Departing Wed, 25 Nov, returning Sun, 29 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Pasco on Wed, 25 Nov, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Sun, 29 Nov, arriving in Pasco.Price includes taxes and charges.From $1,232, select.

Find the cheapest month to fly from Pasco to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Pasco to Ontario International flights are currently cheapest in July.

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Pasco to Ontario International: Alternative routes

Compare routes from Pasco to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Pasco to Ontario: Flight information

The things to know before you go.

Cheapest flight found	$505
Cheapest month to fly	July

Finding cheap flights from Pasco to Ontario International: Frequently asked questions

How much are return flights from Pasco to Ontario International?

The best price we found for a return flight from Pasco to Ontario International is $505. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Pasco to Ontario International?

Currently, there are no airlines that fly direct from Pasco to Ontario International. But we found flights with one or more stops from $505.

How many flights are there a week from Pasco to Ontario International?

As of April 2026, there are no flights flying from Pasco to Ontario International.

When is the cheapest time to fly from Pasco to Ontario International?

The cheapest month to fly from Pasco to Ontario International is usually July.

Which upcoming date is cheapest to fly from Pasco Airport to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Pasco Airport to Ontario International Airport on Friday, 3 July 2026.

Can I get a direct flight from Pasco Airport to Ontario International Airport?

No airlines currently offer direct flights between Pasco Airport and Ontario International Airport. Most routes have one or more stops.

When is the best time to book flights to Ontario?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Pasco Airport to Ontario International with?

Currently, Delta offers the cheapest flight tickets to Ontario International.

Flying from Tri-Cities Airport (PSC) to Ontario International Airport (ONT): what you need to know

Pasco and Ontario share the same timezone, UTC-7.
Arrive at the airport on time so you don't miss your PSC to ONT flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.
You can expect longer queues during popular months like May. Arriving up to four hours in advance for international flights and two hours for a domestic departure will help ensure a smooth travel experience.
If you want to include a stop along the way, just deselect 'Direct flights only' when searching for your ticket from Tri-Cities Airport to Ontario International Airport. These are the most popular stopovers between PSC and ONT:
- Seattle-Tacoma International Airport
- Harry Reid Airport (formerly McCarran Airport)
- Salt Lake City International Airport

How to find the cheapest flights from Tri-Cities Airport (PSC) to Ontario International Airport (ONT)

At the moment, $254 is the lowest price we've seen for a one-way Tri-Cities Airport to Ontario International Airport flight. The best price for a return ticket is $505. Bear in mind that fares can change due to availability when booking.
To score cheap tickets from PSC to ONT, book as early as you can. Airlines typically offer lower prices when flights are first released.
Finding cheap flights from Tri-Cities Airport to Ontario International Airport is easier if you can be flexible with your travel plans. Use the 'Whole month' function to see the best prices across every month and snap up a great deal.
You don't need to check every day to find out if fares have gone down when you set up a Price Alert. We'll let you know the moment there's a new deal on cheap flights from PSC to ONT.
Tailor your flights using filters. Choose your preferred departure and arrival times, total journey duration and airlines. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Tri-Cities Airport to Ontario International Airport.

Handy information about Tri-Cities Airport (PSC)

The address for PSC is 3601 N 20th Avenue.
84.01% of flights leaving Tri-Cities Airport arrive at their destination on schedule. With its dependable on-time performance, delays are unlikely when jetting out of PSC.
Central Pasco to Tri-Cities Airport is approximately 5 kilometres. Depending on traffic, it'll take about 10 minutes to get there if you're driving, ride-sharing or catching a cab.
Expect a trip time of roughly 35 minutes on public transport.
Looking for a handy hotel close to PSC? If you've booked an early flight from Tri-Cities Airport to Ontario International Airport, these stays will put you moments from your departure lounge:

Arriving at Ontario International Airport (ONT)

Reserve a hotel close to ONT if you have a late Tri-Cities Airport to Ontario International Airport flight. Select one of these options and skip the long transfer:
Say yes to new adventures by picking up an Ontario International Airport rental car. Grab a set of wheels from Dollar, Fox - Rent A Car or Thrifty and experience the lesser-explored corners of Ontario and beyond.
Reserving your ride from Ontario International Airport around three weeks ahead can help you get the lowest rate.

Getting from Ontario International Airport (ONT) to central Ontario

ONT is located at 2900 E. Airport Drive.
Ontario International Airport is approximately 6 kilometres from the centre of Ontario. Driving there takes about 10 minutes.
It takes roughly 1 hour 30 minutes to get there using public transport.

When to fly to Ontario International Airport (ONT)

August is the busiest month for flights from Tri-Cities Airport to Ontario International Airport. To escape the crowds, head to Ontario in May.
Book your flight from Tri-Cities Airport to Ontario International Airport for August if you'd like to go to Ontario during its warmest month. You can expect temperatures of between 15ºC and 35ºC.
If you want to travel in cooler conditions, search for a cheap ticket from PSC to ONT in January. Average temperatures are between 4ºC and 23ºC then.

Explore more of United States

Ontario has loads to offer, but there are so many other corners of United States you should also see. About 56 kilometres west of Ontario, a trip to Los Angeles will keep you on the move. Check out popular attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.
If you're interested in discovering another great destination in United States, head for San Diego, roughly 153 kilometres south of Ontario. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are key highlights.