Find Cheap Flights to Pittsburgh

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to Pittsburgh

(Round-trip)
Depart: Mon Sep 11 2017 Return: Tue Sep 12 2017 Trip spans 2 days
United
United
ONT
9:35a
PIT
3:35p
6h 00m
1 stop
PIT
3:05a
ONT
11:45a
8h 40m
1 stop
Depart: Sun Sep 24 2017 Return: Mon Sep 25 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
9:10p
PIT
3:41a
6h 31m
1 stop
PIT
3:10p
ONT
10:10p
7h 00m
1 stop
Depart: Tue Sep 12 2017 Return: Wed Sep 13 2017 Trip spans 2 days
United
United
ONT
9:35a
PIT
3:30p
5h 55m
1 stop
PIT
12:20p
ONT
7:40p
7h 20m
1 stop
Depart: Wed Sep 13 2017 Return: Thu Sep 14 2017 Trip spans 2 days
United
United
ONT
1:45a
PIT
8:25a
6h 40m
1 stop
PIT
3:05a
ONT
11:50a
8h 45m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 4 2017 Trip spans 2 days
United
United
ONT
9:35a
PIT
3:30p
5h 55m
1 stop
PIT
3:24a
ONT
11:09a
7h 45m
1 stop
Depart: Tue Oct 17 2017 Return: Sat Oct 21 2017 Trip spans 5 days
United
United
ONT
9:35a
PIT
3:36p
6h 01m
1 stop
PIT
3:00a
ONT
11:35a
8h 35m
1 stop
Depart: Wed Oct 18 2017 Return: Sat Oct 21 2017 Trip spans 4 days
United
United
ONT
1:45a
PIT
8:25a
6h 40m
1 stop
PIT
3:00a
ONT
11:35a
8h 35m
1 stop
Depart: Sat Oct 21 2017 Return: Tue Oct 24 2017 Trip spans 4 days
United
United
ONT
3:40p
PIT
11:29p
7h 49m
1 stop
PIT
3:24a
ONT
11:09a
7h 45m
1 stop
Depart: Tue Oct 10 2017 Return: Mon Oct 16 2017 Trip spans 7 days
American Airlines
American Airlines
ONT
8:45a
PIT
3:25p
6h 40m
1 stop
PIT
3:05p
ONT
10:10p
7h 05m
1 stop
Depart: Mon Oct 23 2017 Return: Tue Oct 24 2017 Trip spans 2 days
United
United
ONT
9:35a
PIT
3:36p
6h 01m
1 stop
PIT
3:24a
ONT
11:09a
7h 45m
1 stop
Depart: Thu Oct 12 2017 Return: Mon Oct 16 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
8:45a
PIT
3:25p
6h 40m
1 stop
PIT
3:05p
ONT
10:10p
7h 05m
1 stop
Depart: Thu Nov 23 2017 Return: Thu Nov 30 2017 Trip spans 8 days
United
United
ONT
3:30p
PIT
10:19p
6h 49m
1 stop
PIT
11:20a
ONT
6:14p
6h 54m
1 stop
Depart: Fri Sep 15 2017 Return: Mon Sep 18 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
3:35p
PIT
3:41a
12h 06m
2 stops
PIT
3:10p
ONT
9:03a
17h 53m
1 stop
Depart: Sat Dec 9 2017 Return: Mon Dec 11 2017 Trip spans 3 days
United
United
ONT
2:30p
PIT
10:19p
7h 49m
1 stop
PIT
3:40a
ONT
10:36a
6h 56m
1 stop
Depart: Wed Aug 30 2017 Return: Tue Sep 5 2017 Trip spans 7 days
American Airlines
American Airlines
ONT
3:35p
PIT
4:07a
12h 32m
2 stops
PIT
7:29a
ONT
5:02p
9h 33m
1 stop
Depart: Thu Dec 28 2017 Return: Mon Jan 1 2018 Trip spans 5 days
American Airlines
American Airlines
ONT
4:50p
PIT
3:07a
10h 17m
2 stops
PIT
12:30p
ONT
7:39p
7h 09m
1 stop
Depart: Wed Sep 20 2017 Return: Sun Sep 24 2017 Trip spans 5 days
United
United
ONT
9:35a
PIT
3:35p
6h 00m
1 stop
PIT
3:21a
ONT
11:09a
7h 48m
1 stop
Depart: Thu Sep 21 2017 Return: Sun Sep 24 2017 Trip spans 4 days
United
United
ONT
9:35a
PIT
3:35p
6h 00m
1 stop
PIT
3:21a
ONT
11:09a
7h 48m
1 stop
Depart: Wed Oct 4 2017 Return: Sun Oct 8 2017 Trip spans 5 days
United
United
ONT
3:35p
PIT
11:19p
7h 44m
1 stop
PIT
3:24a
ONT
11:09a
7h 45m
1 stop
Depart: Fri Oct 13 2017 Return: Sat Oct 21 2017 Trip spans 9 days
United
United
ONT
3:40p
PIT
11:29p
7h 49m
1 stop
PIT
3:00a
ONT
11:35a
8h 35m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Ontario
$274
Destination

Pittsburgh
$274