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

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

What airlines fly to Pittsburgh?

American Airlines, Southwest and Breeze Airways 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 56% 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.

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 November 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.

$74 Cheap Flights from Ontario to Pittsburgh in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Pittsburgh

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:14 am - 6:35 pmONT-PIT

9h 21m1 stop

7:31 pm - 10:44 pmPIT-ONT

30h 13m1 stop

$294Alaska Airlines

Find Deal

Wed, Mar 4 - Mon, Mar 9

6:00 am - 6:36 pmONT-PIT

9h 36m1 stop

7:33 pm - 6:33 pmPIT-ONT

26h 00m1 stop

$304Alaska Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

12:13 pm - 6:36 pmONT-PIT

27h 23m1 stop

7:33 pm - 11:19 amPIT-ONT

18h 46m1 stop

$314Alaska Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 8

6:00 am - 4:36 pmONT-PIT

7h 36m1 stop

5:31 pm - 9:55 pmPIT-ONT

7h 24m1 stop

$315Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

5:49 pm - 10:13 amONT-PIT

13h 24m2 stops

5:26 pm - 11:04 pmPIT-ONT

8h 38m1 stop

$320Delta

Find Deal

Sat, Dec 6 - Mon, Dec 8

4:02 pm - 6:35 pmONT-PIT

23h 33m1 stop

7:31 pm - 3:08 pmPIT-ONT

22h 37m1 stop

$323Alaska Airlines

Find Deal

Sat, Feb 28 - Fri, Mar 6

6:00 am - 6:36 pmONT-PIT

9h 36m1 stop

7:33 pm - 11:29 pmPIT-ONT

30h 56m1 stop

$325Alaska Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

5:49 pm - 9:46 amONT-PIT

12h 57m2 stops

1:55 pm - 10:29 pmPIT-ONT

11h 34m2 stops

$327Delta

Find Deal

Thu, Dec 11 - Sat, Jan 10

12:55 pm - 10:43 pmONT-PIT

6h 48m1 stop

3:04 pm - 7:39 pmPIT-ONT

7h 35m1 stop

$333American Airlines

Find Deal

Tue, Dec 9 - Wed, Dec 17

10:25 pm - 9:12 amONT-PIT

7h 47m1 stop

6:00 am - 11:02 amPIT-ONT

8h 02m1 stop

$337Delta

Find Deal

Wed, Dec 10 - Tue, Dec 16

Alaska Airlines flights from Ontario to Pittsburgh

Our best Alaska Airlines deals on Ontario to Pittsburgh flight tickets

Alaska Airlines

Mar 4

ONT6:14 amOntario

9h 21m

1 stop

PIT6:35 pmPittsburgh

Mar 9

PIT7:31 pmPittsburgh

30h 13m

1 stop

ONT10:44 pmOntario

$294

Find similar

Alaska Airlines

Dec 4

ONT6:00 amOntario

9h 36m

1 stop

PIT6:36 pmPittsburgh

Dec 8

PIT7:33 pmPittsburgh

26h 00m

1 stop

ONT6:33 pmOntario

$304

Find similar

Alaska Airlines

Dec 6

ONT12:13 pmOntario

27h 23m

1 stop

PIT6:36 pmPittsburgh

Dec 8

PIT7:33 pmPittsburgh

18h 46m

1 stop

ONT11:19 amOntario

$314

Find similar

Delta flights from Ontario to Pittsburgh

Our best Delta deals on Ontario to Pittsburgh flight tickets

Delta

Dec 10

ONT10:25 pmOntario

7h 47m

1 stop

PIT9:12 amPittsburgh

Dec 14

PIT5:31 pmPittsburgh

9h 27m

1 stop

ONT11:58 pmOntario

$315

Find similar

Delta

Dec 6

ONT5:49 pmOntario

13h 24m

2 stops

PIT10:13 amPittsburgh

Dec 8

PIT5:26 pmPittsburgh

8h 38m

1 stop

ONT11:04 pmOntario

$320

Find similar

Delta

Dec 6

ONT5:49 pmOntario

14h 23m

2 stops

PIT11:12 amPittsburgh

Dec 8

PIT5:40 pmPittsburgh

9h 18m

2 stops

ONT11:58 pmOntario

$325

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 3/4

6:14 am-6:35 pm

1 stop9h 21m

Pittsburgh

Mon 3/9

7:31 pm-10:44 pm

1 stop30h 13m

$294

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 12/4

6:00 am-6:36 pm

1 stop9h 36m

Pittsburgh

Mon 12/8

7:33 pm-6:33 pm

1 stop26h 00m

$304

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 12/6

12:13 pm-6:36 pm

1 stop27h 23m

Pittsburgh

Mon 12/8

7:33 pm-11:19 am

1 stop18h 46m

$314

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 12/10

6:00 am-4:36 pm

1 stop7h 36m

Pittsburgh

Sat 12/13

5:31 pm-9:55 pm

1 stop7h 24m

$315

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 12/6

5:49 pm-10:13 am

2 stops13h 24m

Pittsburgh

Mon 12/8

5:26 pm-11:04 pm

1 stop8h 38m

$320

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Sat 2/28

4:02 pm-6:35 pm

1 stop23h 33m

Pittsburgh

Fri 3/6

7:31 pm-3:08 pm

1 stop22h 37m

$323

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Fri 12/5

6:00 am-6:36 pm

1 stop9h 36m

Pittsburgh

Sun 12/7

7:33 pm-11:29 pm

1 stop30h 56m

$325

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Thu 12/11

5:49 pm-9:46 am

2 stops12h 57m

Pittsburgh

Sat 1/10

1:55 pm-10:29 pm

2 stops11h 34m

$327

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Tue 12/9

12:55 pm-10:43 pm

1 stop6h 48m

Pittsburgh

Wed 12/17

3:04 pm-7:39 pm

1 stop7h 35m

$333

OntarioPittsburgh

ONT - PIT

ONTPIT

Ontario

Wed 12/10

10:25 pm-9:12 am

1 stop7h 47m

Pittsburgh

Tue 12/16

6:00 am-11:02 am

1 stop8h 02m

$337

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 $272. 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 $453 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 November 2025, prices for Ontario to Pittsburgh flights are approximately 20% 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.

Search flight deals

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 November 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 50% of the total bookings. Other popular airlines include American Airlines with 23%, 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
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,017 reviews	Search United Airlines flights
Delta	PriceFrom $296	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
Southwest	PriceFrom $306	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
American Airlines	PriceFrom $342	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights

Washington

Monroeville

Wheeling

Butler

Canonsburg

Belle Vernon

Triadelphia

New Castle

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.