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Cheap Flights from Ontario International to Pittsburgh International

Compare Ontario International to Pittsburgh International flight deals

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

Book the best Pittsburgh International fare with no extra fees

Flight deals from Ontario International to Pittsburgh International

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Pittsburgh International Airport? If you want to travel next month, return fares start from R 5,359. Find the lowest prices on one-way and return tickets right here.
Pittsburgh.R 2,093 per passenger.Departing Tue, 18 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 18 Aug, arriving in Pittsburgh International.Price includes taxes and charges.From R 2,093, select.
Pittsburgh.R 2,436 per passenger.Departing Wed, 2 Sep.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 2 Sep, arriving in Pittsburgh International.Price includes taxes and charges.From R 2,436, select.
Pittsburgh.R 2,438 per passenger.Departing Thu, 1 Oct.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 1 Oct, arriving in Pittsburgh International.Price includes taxes and charges.From R 2,438, select.
Pittsburgh.R 2,910 per passenger.Departing Tue, 17 Nov.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 17 Nov, arriving in Pittsburgh International.Price includes taxes and charges.From R 2,910, select.
Pittsburgh.R 2,912 per passenger.Departing Sat, 5 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 5 Dec, arriving in Pittsburgh International.Price includes taxes and charges.From R 2,912, select.
Pittsburgh.R 3,919 per passenger.Departing Mon, 4 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 4 Jan, arriving in Pittsburgh International.Price includes taxes and charges.From R 3,919, select.
Pittsburgh.R 4,597 per passenger.Departing Fri, 17 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Fri, 17 Jul, arriving in Pittsburgh International.Price includes taxes and charges.From R 4,597, select.
Pittsburgh.R 4,819 per passenger.Departing Sun, 14 Feb.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sun, 14 Feb, arriving in Pittsburgh International.Price includes taxes and charges.From R 4,819, select.

Find the cheapest month to fly from Ontario International to Pittsburgh International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Pittsburgh International flights are currently cheapest in August.
Jul
from R 4,567
Aug
from R 2,079
Sep
from R 2,420
Oct
from R 2,422
Nov
from R 2,891
Dec
from R 2,893
Jan
from R 3,894
Feb
from R 4,788
Mar
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Apr
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May
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Jun
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Ontario International to Pittsburgh International: Alternative routes

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

Pittsburgh International

21km from central Pittsburgh
ClosestCheapest
from R 2,093
Search flights

Latrobe

54km from central Pittsburgh
Search flights

Morgantown

89km from central Pittsburgh
from R 14,230
Search flights

Ontario to Pittsburgh: Flight information

The things to know before you go.
Cheapest flight foundR 2,093
Cheapest month to flyAugust

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

The best price we found for a return flight from Ontario International to Pittsburgh International is R 4,441. 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.
Currently, there are no airlines that fly direct from Ontario International to Pittsburgh International. But we found flights with one or more stops from R 4,470.
As of July 2026, there are no flights flying from Ontario International to Pittsburgh International.
The cheapest month to fly from Ontario International to Pittsburgh International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Pittsburgh International Airport on Wednesday, 28 October 2026.
No airlines currently offer direct flights between Ontario International Airport and Pittsburgh International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Pittsburgh International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

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

Currently, Frontier Airlines offers the cheapest flight tickets to Pittsburgh International.

Flying from Ontario International Airport (ONT) to Pittsburgh International Airport (PIT): what you need to know

  • The timezone in Pittsburgh is UTC-5, which is three hours ahead of Ontario.

  • Your ONT to PIT flight won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Be prepared for longer queues during popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures will give you ample time for security and boarding.

  • If you'd like to include a stop along the way, simply deselect 'Direct flights only' when searching for your ticket from Ontario International Airport to Pittsburgh International Airport. These are the most popular stopovers between ONT and PIT:

    • Denver International Airport

    • Phoenix Sky Harbour Airport

    • Nashville Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Pittsburgh International Airport (PIT)

  • Right now, R 2,079 is the cheapest price we've found for a one-way Ontario International Airport to Pittsburgh International Airport flight. The best price for a return plane ticket is R 4,470. Keep in mind that fares can change due to availability at the time of booking.

  • To find cheap tickets from ONT to PIT, book ahead. Airlines generally offer lower prices when flights are first made available.

  • If you can be flexible with your trip dates, use the 'Whole month' tool. It'll show you the cheapest price in every month when searching for a flight from Ontario International Airport to Pittsburgh International Airport.

  • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll send you an update as soon as there's a new deal on cheap flights from ONT to PIT.

  • Select your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Ontario International Airport to Pittsburgh International Airport.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • 83% of flights leaving Ontario International Airport land at their destination as planned. Given its strong on-time performance, you're unlikely to be delayed when jetting out of ONT.

  • Ontario International Airport is around 10 kilometres from central Ontario. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • The journey on public transport takes about 45 minutes.

  • Get your break off to a leisurely start by staying near ONT. Whether you're taking an early flight from Ontario International Airport to Pittsburgh International Airport or just don't want to be rushed, these stays are perfect:

Arriving at Pittsburgh International Airport (PIT)

Getting from Pittsburgh International Airport (PIT) to central Pittsburgh

  • The street address for PIT is 1000 Airport Boulevard.

  • Pittsburgh International Airport is approximately 32 kilometres from central Pittsburgh. The drive time takes about 30 minutes.

  • It typically takes 45 minutes if you're travelling on public transport.

When to fly to Pittsburgh International Airport (PIT)

  • It's time to pick your travel dates for your flight from Ontario International Airport to Pittsburgh International Airport. July is the busiest month to head to Pittsburgh. If you prefer a more low-key vibe, go in March.

  • Book your flight from Ontario International Airport to Pittsburgh International Airport for July if you'd like to go to Pittsburgh during its warmest month. You can expect temperatures of between 15ºC (59ºF) and 31ºC (88ºF).

  • Look for cheap tickets from ONT to PIT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between -10ºC (14ºF) and 6ºC (43ºF) on average.

Explore more of the United States

  • You've done Pittsburgh, now it's time to discover more of the United States. Travel about 418 kilometres east to Philadelphia to check off its leading attractions. From Independence Hall to Liberty Bell and Philadelphia Museum of Art, you've got a jam-packed schedule ahead.

  • Around 257 kilometres west of Pittsburgh, Columbus is another favourite stop in the United States. Experience this destination's highlights firsthand at Franklin Park Conservatory and Botanical Gardens, Whetstone Park / Park of Roses and Ohio Theatre.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.