What airlines fly to Pittsburgh?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to Pittsburgh from Ontario according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Pittsburgh. Keep in mind that there are 7 different airlines that fly to Pittsburgh on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Pittsburgh?

Frontier, Alaska Airlines, and United Airlines are the most popular carriers operating from Ontario to Pittsburgh

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?

As of October 2025, there are 4 operators available to choose from 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.

$72 Cheap Flights from Ontario to Pittsburgh in 2025/26

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Find the cheapest flights from Ontario to Pittsburgh

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:53 am - 4:35 pmONT-PIT

6h 42m1 stop

5:30 pm - 11:50 pmPIT-ONT

9h 20m1 stop

$183Frontier

Find Deal

Mon, Nov 10 - Fri, Nov 14

6:53 am - 4:35 pmONT-PIT

6h 42m1 stop

5:02 pm - 11:57 pmPIT-ONT

9h 55m1 stop

$218Frontier

Find Deal

Fri, Nov 14 - Sat, Nov 22

12:04 pm - 6:01 pmONT-PIT

26h 57m2 stops

8:50 pm - 9:17 pmPIT-ONT

27h 27m1 stop

$237Multiple Airlines

Find Deal

Thu, Dec 11 - Sun, Jan 11

6:00 am - 4:34 pmONT-PIT

7h 34m1 stop

5:29 pm - 11:52 pmPIT-ONT

9h 23m1 stop

$315Delta

Find Deal

Thu, Nov 20 - Mon, Nov 24

6:05 am - 4:02 pmONT-PIT

6h 57m1 stop

4:50 pm - 9:49 pmPIT-ONT

7h 59m1 stop

$328United Airlines

Find Deal

Thu, Nov 27 - Thu, Dec 4

9:59 am - 8:04 pmONT-PIT

7h 05m1 stop

7:22 pm - 11:55 pmPIT-ONT

7h 33m1 stop

$331American Airlines

Find Deal

Thu, Nov 27 - Thu, Dec 4

12:16 pm - 12:21 amONT-PIT

9h 05m1 stop

6:00 am - 11:02 amPIT-ONT

8h 02m1 stop

$333Delta

Find Deal

Thu, Nov 27 - Wed, Dec 3

7:00 am - 6:51 pmONT-PIT

8h 51m2 stops

4:50 pm - 9:49 pmPIT-ONT

7h 59m1 stop

$334United Airlines

Find Deal

Thu, Nov 27 - Thu, Dec 4

2:59 pm - 12:29 amONT-PIT

6h 30m1 stop

6:44 am - 11:53 amPIT-ONT

8h 09m1 stop

$376American Airlines

Find Deal

Sat, Nov 22 - Fri, Nov 28

8:40 am - 8:30 pmONT-PIT

8h 50m2 stops

5:40 am - 12:05 pmPIT-ONT

9h 25m2 stops

$447Southwest

Find Deal

Thu, Dec 11 - Sun, Jan 11

Frontier flights from Ontario to Pittsburgh

Our best Frontier deals on Ontario to Pittsburgh flight tickets

Frontier

Nov 10

ONT6:53 amOntario

6h 42m

1 stop

PIT4:35 pmPittsburgh

Nov 14

PIT5:30 pmPittsburgh

9h 20m

1 stop

ONT11:50 pmOntario

$183

Find similar

Frontier

Nov 14

ONT6:53 amOntario

6h 42m

1 stop

PIT4:35 pmPittsburgh

Nov 22

PIT5:02 pmPittsburgh

9h 55m

1 stop

ONT11:57 pmOntario

$218

Find similar

Frontier

Nov 14

ONT6:53 amOntario

6h 42m

1 stop

PIT4:35 pmPittsburgh

Nov 25

PIT5:02 pmPittsburgh

9h 55m

1 stop

ONT11:57 pmOntario

$239

Find similar

Delta flights from Ontario to Pittsburgh

Our best Delta deals on Ontario to Pittsburgh flight tickets

Delta

Nov 20

ONT6:00 amOntario

7h 34m

1 stop

PIT4:34 pmPittsburgh

Nov 24

PIT5:29 pmPittsburgh

9h 23m

1 stop

ONT11:52 pmOntario

$315

Find similar

Delta

Nov 27

ONT12:16 pmOntario

9h 05m

1 stop

PIT12:21 amPittsburgh

Dec 3

PIT6:00 amPittsburgh

8h 02m

1 stop

ONT11:02 amOntario

$333

Find similar

Delta

Nov 17

ONT10:25 pmOntario

12h 58m

2 stops

PIT2:23 pmPittsburgh

Nov 24

PIT5:29 pmPittsburgh

9h 23m

1 stop

ONT11:52 pmOntario

$357

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Mon 11/10

6:53 am-4:35 pm

1 stop6h 42m

Pittsburgh

Fri 11/14

5:30 pm-11:50 pm

1 stop9h 20m

$183

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 11/14

6:53 am-4:35 pm

1 stop6h 42m

Pittsburgh

Sat 11/22

5:02 pm-11:57 pm

1 stop9h 55m

$218

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 12/11

12:04 pm-6:01 pm

2 stops26h 57m

Pittsburgh

Sun 1/11

8:50 pm-9:17 pm

1 stop27h 27m

$237

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/20

6:00 am-4:34 pm

1 stop7h 34m

Pittsburgh

Mon 11/24

5:29 pm-11:52 pm

1 stop9h 23m

$315

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/27

6:05 am-4:02 pm

1 stop6h 57m

Pittsburgh

Thu 12/4

4:50 pm-9:49 pm

1 stop7h 59m

$328

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/27

9:59 am-8:04 pm

1 stop7h 05m

Pittsburgh

Thu 12/4

7:22 pm-11:55 pm

1 stop7h 33m

$331

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/27

12:16 pm-12:21 am

1 stop9h 05m

Pittsburgh

Wed 12/3

6:00 am-11:02 am

1 stop8h 02m

$333

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 11/27

7:00 am-6:51 pm

2 stops8h 51m

Pittsburgh

Thu 12/4

4:50 pm-9:49 pm

1 stop7h 59m

$334

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 11/22

2:59 pm-12:29 am

1 stop6h 30m

Pittsburgh

Fri 11/28

6:44 am-11:53 am

1 stop8h 09m

$376

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 12/11

8:40 am-8:30 pm

2 stops8h 50m

Pittsburgh

Sun 1/11

5:40 am-12:05 pm

2 stops9h 25m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $377. The month of September is another great option to travel to Pittsburgh, with average flight prices from Ontario averaging around $381.

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 $271. 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 $401. 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 morning. Our users have found flights to Pittsburgh in the morning for as low as $326. 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 $451 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 October 2025, prices for Ontario to Pittsburgh flights are approximately 51% more expensive 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 5h 51m.
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?
As of October 2025, there are 4 operators available to choose from 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?
Based on momondo bookings for flights between Ontario and Pittsburgh, the leading airline is Southwest, making up 48% of the total bookings. Other popular airlines include American Airlines with 24%, Delta with 14%, and United Airlines with 13%.

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
Delta	PriceFrom $296	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
Southwest	PriceFrom $306	Free Cancellation	Rating 8.0 4,243 reviews	Search Southwest flights
United Airlines	PriceFrom $310	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights
American Airlines	PriceFrom $342	Free Cancellation	Rating 7.2 11,035 reviews	Search American Airlines flights

Washington

Monroeville

Wheeling

Butler

Canonsburg

New Castle

Triadelphia

Belle Vernon

West Mifflin

Steubenville

Moon

Coraopolis

Wexford

Mars

Cadiz

Freeport

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.