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Cheap flights from Ontario to Pittsburgh from $121

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Pittsburgh departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Pittsburgh (ONT-PIT)

Cheap round-trip flights

Logo
2:45 pm - 4:20 pmONT-PIT
22h 35m1 stop
Logo
5:25 pm - 9:56 pmPIT-ONT
7h 31m1 stop
$236
Find Deal
Mon, Sep 22 - Tue, Sep 30
Logo
6:00 am - 4:20 pmONT-PIT
7h 20m1 stop
Logo
5:17 pm - 7:17 amPIT-ONT
17h 00m1 stop
$238
Find Deal
Thu, Oct 2 - Sun, Oct 5
American Airlines Logo
12:47 pm - 10:38 pmONT-PIT
6h 51m1 stop
American Airlines Logo
5:09 am - 11:56 amPIT-ONT
9h 47m2 stops
$282American Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
United Airlines Logo
1:15 pm - 10:30 pmONT-PIT
6h 15m1 stop
United Airlines Logo
3:00 pm - 10:30 pmPIT-ONT
10h 30m2 stops
$291United Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
American Airlines Logo
1:10 pm - 10:55 pmONT-PIT
6h 45m1 stop
American Airlines Logo
7:00 am - 11:55 amPIT-ONT
7h 55m1 stop
$295American Airlines
Find Deal
Thu, Oct 2 - Sat, Oct 4
Delta Logo
10:59 pm - 9:10 amONT-PIT
7h 11m1 stop
Delta Logo
7:00 am - 11:24 amPIT-ONT
7h 24m1 stop
$297Delta
Find Deal
Mon, Nov 10 - Wed, Nov 12
Delta Logo
10:59 pm - 9:10 amONT-PIT
7h 11m1 stop
Delta Logo
10:45 am - 4:14 pmPIT-ONT
8h 29m2 stops
$302Delta
Find Deal
Mon, Nov 10 - Wed, Nov 12
Southwest Logo
5:50 am - 7:50 pmONT-PIT
11h 00m2 stops
Southwest Logo
5:30 am - 9:40 amPIT-ONT
7h 10m1 stop
$316Southwest
Find Deal
Sat, Nov 15 - Mon, Nov 17
United Airlines Logo
5:10 am - 4:55 pmONT-PIT
8h 45m2 stops
United Airlines Logo
10:59 am - 5:37 pmPIT-ONT
9h 38m2 stops
$331United Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Southwest Logo
5:50 am - 7:50 pmONT-PIT
11h 00m2 stops
Southwest Logo
1:55 pm - 8:45 pmPIT-ONT
9h 50m2 stops
$361Southwest
Find Deal
Sat, Nov 15 - Mon, Nov 17

Delta flights from Ontario to Pittsburgh

Our best Delta deals on Ontario to Pittsburgh flight tickets
Delta
Nov 10
ONT10:59 pmOntario
7h 11m
1 stop
PIT9:10 amPittsburgh
Nov 12
PIT7:00 amPittsburgh
7h 24m
1 stop
ONT11:24 amOntario
$297
Find similar
Delta
Nov 10
ONT10:59 pmOntario
7h 11m
1 stop
PIT9:10 amPittsburgh
Nov 12
PIT10:45 amPittsburgh
8h 29m
2 stops
ONT4:14 pmOntario
$302
Find similar
Delta
Sep 10
ONT7:05 amOntario
13h 03m
2 stops
PIT11:08 pmPittsburgh
Sep 16
PIT1:00 pmPittsburgh
12h 23m
2 stops
ONT10:23 pmOntario
$307
Find similar

American Airlines flights from Ontario to Pittsburgh

Our best American Airlines deals on Ontario to Pittsburgh flight tickets
American Airlines
Sep 10
ONT12:47 pmOntario
6h 51m
1 stop
PIT10:38 pmPittsburgh
Sep 16
PIT5:09 amPittsburgh
9h 47m
2 stops
ONT11:56 amOntario
$282
Find similar
American Airlines
Oct 2
ONT1:10 pmOntario
6h 45m
1 stop
PIT10:55 pmPittsburgh
Oct 4
PIT7:00 amPittsburgh
7h 55m
1 stop
ONT11:55 amOntario
$295
Find similar
American Airlines
Oct 2
ONT1:10 pmOntario
6h 45m
1 stop
PIT10:55 pmPittsburgh
Oct 4
PIT11:56 amPittsburgh
9h 20m
2 stops
ONT6:16 pmOntario
$300
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Pittsburgh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Ontario to Pittsburgh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Mon 9/22

2:45 pm-4:20 pm

1 stop22h 35m

Pittsburgh

Tue 9/30

5:25 pm-9:56 pm

1 stop7h 31m

$236

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 10/2

6:00 am-4:20 pm

1 stop7h 20m

Pittsburgh

Sun 10/5

5:17 pm-7:17 am

1 stop17h 00m

$238

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 9/10

12:47 pm-10:38 pm

1 stop6h 51m

Pittsburgh

Tue 9/16

5:09 am-11:56 am

2 stops9h 47m

$282

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 10/3

1:15 pm-10:30 pm

1 stop6h 15m

Pittsburgh

Tue 10/7

3:00 pm-10:30 pm

2 stops10h 30m

$291

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 10/2

1:10 pm-10:55 pm

1 stop6h 45m

Pittsburgh

Sat 10/4

7:00 am-11:55 am

1 stop7h 55m

$295

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Mon 11/10

10:59 pm-9:10 am

1 stop7h 11m

Pittsburgh

Wed 11/12

7:00 am-11:24 am

1 stop7h 24m

$297

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Mon 11/10

10:59 pm-9:10 am

1 stop7h 11m

Pittsburgh

Wed 11/12

10:45 am-4:14 pm

2 stops8h 29m

$302

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 11/15

5:50 am-7:50 pm

2 stops11h 00m

Pittsburgh

Mon 11/17

5:30 am-9:40 am

1 stop7h 10m

$316

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 9/6

5:10 am-4:55 pm

2 stops8h 45m

Pittsburgh

Sat 9/13

10:59 am-5:37 pm

2 stops9h 38m

$331

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 11/15

5:50 am-7:50 pm

2 stops11h 00m

Pittsburgh

Mon 11/17

1:55 pm-8:45 pm

2 stops9h 50m

$361

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Pittsburgh from

How to get the cheapest flight ticket from Ontario to Pittsburgh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Pittsburgh?

In general, August is the cheapest month to fly from Ontario to Pittsburgh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $365. The month of September is another great option to travel to Pittsburgh, with average flight prices from Ontario averaging around $373.

What is the cheapest day to depart on your flight to Pittsburgh?

The cheapest day to depart on your flight to Pittsburgh is on a Wednesday when prices can be found for as low as $265. This is often the case because there is less demand to fly during this day of the week. Flights from Ontario to Pittsburgh on a Monday will generally be more expensive and average around $373. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Pittsburgh?

Our data shows that the cheapest Ontario to Pittsburgh flights are usually those with departure times in the afternoon. Our users have found flights to Pittsburgh in the afternoon for as low as $260. Flights to Pittsburgh are more costly at noon, with an average ticket price of $354. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Pittsburgh from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Pittsburgh for around $463 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pittsburgh from Ontario for as low as $286 on momondo.

How have Ontario to Pittsburgh flight prices changed over time?

As of August 2025, prices for Ontario to Pittsburgh flights are approximately 36% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Pittsburgh

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Pittsburgh according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Pittsburgh (ONT to PIT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Pittsburgh

Direct flights

None
There are no direct flights from Ontario to Pittsburgh. There are no popular flight routes from Ontario to Pittsburgh.
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  • How far is Ontario to Pittsburgh by plane?

    A flight from Ontario to Pittsburgh will travel around 2099.2 mi. In terms of flight time, this usually takes a little over 6h 15m.

  • When did momondo last update prices for flights from Ontario Airport to Pittsburgh Airport?

    Prices for flights from Ontario Airport to Pittsburgh Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Pittsburgh Airport?

  • How old do you have to be to fly from Ontario Airport to Pittsburgh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Pittsburgh Airport.

  • What documentation or ID do you need to fly to Pittsburgh Airport?

    The travel and health documents you'll need for your trip to Pittsburgh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Pittsburgh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Pittsburgh?

Best airlines flying from Ontario to Pittsburgh

Compare and see reviews for airlines that fly from Ontario to Pittsburgh with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $228Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $286Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
SouthwestPriceFrom $325Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
American AirlinesPriceFrom $342Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Southwest Flights From Ontario to Pittsburgh

    The lowest priced Southwest flight from Ontario to Pittsburgh from the last 72 hours was $325. Generally, Southwest has 3 flights on this route every week with an average price of $434. Southwest is rated 8.0/10 by our users.

Traveling to a place near Pittsburgh?

Book flights to Pittsburgh if you plan to visit one of these locations
Washington
Monroeville
Wheeling
Butler
Canonsburg
West Mifflin
New Castle
Triadelphia
Steubenville
Belle Vernon
Moon
Coraopolis
Mars
Wexford
Freeport
Cadiz
Chester
Bridgeport

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Pittsburgh?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Pittsburgh from Ontario.

Can I find flights from Ontario to Pittsburgh with flexible booking policies on momondo?

All flight searches from Ontario to Pittsburgh on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Pittsburgh?

Once you have performed a search for Ontario to Pittsburgh flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Pittsburgh right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Pittsburgh now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Pittsburgh and let you know when they change.

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