ONT - PIT

$84 Find Cheap Flights from Ontario to Pittsburgh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Pittsburgh departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Pittsburgh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Pittsburgh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Pittsburgh, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$219
Overall average: $472
Frontier
vie. 2/20lun. 2/23
ONT - PIT • 1 stop
Cheapest one-way
$84
Typical prices: $169-$258
Frontier
lun. 3/2
ONT - PIT • 1 stop
Top airlines
Frontier
Cheapest • from $219 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 52% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
December
Cheapest • 17% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Pittsburgh!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Pittsburgh (ONT-PIT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Pittsburgh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Pittsburgh

vie., feb. 20 - lun., feb. 23
Frontier Logo
6:00 am - 3:59 pm
ONT
-
PIT
6h 59m
1 stop
Frontier Logo
4:14 pm - 11:59 pm
PIT
-
ONT
10h 45m
1 stop
$219Frontier
mar., mar. 24 - mar., mar. 31
United Airlines Logo
11:59 pm - 9:41 am
ONT
-
PIT
6h 42m
1 stop
United Airlines Logo
6:25 am - 12:14 pm
PIT
-
ONT
8h 49m
1 stop
$257United Airlines
mar., mar. 24 - mar., mar. 31
United Airlines Logo
6:37 pm - 9:41 am
ONT
-
PIT
12h 04m
2 stops
United Airlines Logo
5:55 pm - 10:26 pm
PIT
-
ONT
7h 31m
1 stop
$262United Airlines
mar., mar. 24 - mar., abr. 7
United Airlines Logo
11:59 pm - 1:29 pm
ONT
-
PIT
10h 30m
2 stops
United Airlines Logo
2:09 pm - 8:36 pm
PIT
-
ONT
9h 27m
2 stops
$294United Airlines
mar., mar. 24 - mié., mar. 25
Delta Logo
10:25 pm - 9:04 am
ONT
-
PIT
7h 39m
1 stop
Delta Logo
5:23 pm - 11:51 pm
PIT
-
ONT
9h 28m
1 stop
$297Delta
lun., mar. 2 - mar., mar. 3
Delta Logo
10:20 pm - 9:09 am
ONT
-
PIT
7h 49m
1 stop
Delta Logo
1:43 pm - 9:05 pm
PIT
-
ONT
10h 22m
1 stop
$306Delta
mar., mar. 24 - mar., mar. 31
Delta Logo
10:25 pm - 1:27 pm
ONT
-
PIT
12h 02m
2 stops
Delta Logo
1:42 pm - 11:51 pm
PIT
-
ONT
13h 09m
2 stops
$307Delta
jue., mar. 5 - lun., mar. 9
Alaska Airlines Logo
6:14 am - 6:35 pm
ONT
-
PIT
9h 21m
1 stop
Alaska Airlines Logo
7:31 pm - 11:08 am
PIT
-
ONT
18h 37m
1 stop
$315Alaska Airlines
jue., mar. 5 - lun., mar. 9
Delta Logo
6:00 am - 4:08 pm
ONT
-
PIT
7h 08m
1 stop
Delta Logo
5:23 pm - 11:51 pm
PIT
-
ONT
9h 28m
1 stop
$323Delta
vie., mar. 6 - lun., mar. 9
Alaska Airlines Logo
6:14 am - 6:35 pm
ONT
-
PIT
9h 21m
1 stop
Alaska Airlines Logo
7:31 pm - 11:08 am
PIT
-
ONT
18h 37m
1 stop
$334Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Pittsburgh flights

Get data-powered insights and trends into flights from Ontario to Pittsburgh to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ontario to Pittsburgh?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Pittsburgh is December, where tickets cost $341 (return) on average. On the other hand, the most expensive months are June and February, where the average cost of round-trip tickets is $513 and $472 respectively.

How far in advance should I book a flight from Ontario to Pittsburgh?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Pittsburgh, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$84
Best time to beat the crowds with an average 2% drop in price.
Flight from Ontario to Pittsburgh

When to book flights from Ontario to Pittsburgh

Are your dates flexible? Find out the best times to travel from Ontario to Pittsburgh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Pittsburgh

  • What is the cheapest flight from Ontario to Pittsburgh?

    In the last 3 days, the lowest price for a flight from Ontario to Pittsburgh was $84 for a one-way ticket and $219 for a round-trip.

  • Do I need a passport to fly between Ontario and Pittsburgh?

    No, a passport isn't needed to fly from Ontario to Pittsburgh. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Pittsburgh?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Pittsburgh?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Pittsburgh, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Pittsburgh, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Pittsburgh are Southwest and Delta. With an average price for the route of $388 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $431 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Pittsburgh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Pittsburgh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Pittsburgh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Pittsburgh from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Pittsburgh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Pittsburgh with an airline and back to Ontario with another airline. Booking your flights between Ontario and PIT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Pittsburgh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Pittsburgh from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Ontario to Pittsburgh

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Pittsburgh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Pittsburgh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4273 reviews
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

8.0 ExcellentJoseph, Jan 2026
LGB - PHX
Read more Southwest reviews

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The seat cushions were very worn so they were extremely uncomfortable.

The flight was on time and arrived early. The crew were friendly and helpful.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Very crowded flight but what can you expect these days?? Crew was accommodating.

Everything you need to know for your flight from Ontario to Pittsburgh

Information on your arrival and departure airports