What airlines fly to Pittsburgh?

American Airlines, United Airlines and Southwest 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 40% of people opting to fly with this airline when traveling to Pittsburgh. Keep in mind that there are 6 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?

Delta, Southwest, and United Airlines are the most popular carriers operating from Ontario to Pittsburgh

Which layover airport has the shortest travel time from Ontario to Pittsburgh?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 6h 15m.

Which layover airport offers the lowest fares from Ontario to Pittsburgh?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $376.

Which airport is the most popular layover for flights between Ontario and Pittsburgh?

Chicago (ORD) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Ontario to Pittsburgh?

Las Vegas (LAS) has the shortest average layover time for this route: 0h 55m.

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 2026, 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.

$163 Cheap Flights from Ontario to Pittsburgh in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

1:40 pm - 11:00 pmONT Ontario-PIT Pittsburgh

6h 20m1 stop Denver Intl

5:00 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 59m1 stop Houston George Bush Intcntl

$320United Airlines

Sat, Dec 5 - Tue, Dec 8

10:30 am - 10:38 pmONT Ontario-PIT Pittsburgh

9h 08m1 stop Dallas/Fort Worth

7:00 am - 11:51 amPIT Pittsburgh-ONT Ontario

7h 51m1 stop Dallas/Fort Worth

$325American Airlines

Tue, Nov 17 - Mon, Nov 23

1:02 pm - 10:36 pmONT Ontario-PIT Pittsburgh

6h 34m1 stop Dallas/Fort Worth

7:09 am - 1:24 pmPIT Pittsburgh-ONT Ontario

9h 15m1 stop Dallas/Fort Worth

$325American Airlines

Sat, Dec 5 - Tue, Dec 8

5:00 am - 6:24 pmONT Ontario-PIT Pittsburgh

10h 24m2 stops Denver Intl Chicago O'Hare Intl

5:00 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 59m1 stop Houston George Bush Intcntl

$326United Airlines

Sat, Dec 5 - Tue, Dec 8

3:20 pm - 12:20 amONT Ontario-PIT Pittsburgh

6h 00m1 stop Las Vegas Harry Reid Intl

5:50 am - 12:10 pmPIT Pittsburgh-ONT Ontario

9h 20m2 stops Denver Intl Phoenix Sky Harbor Intl

$330Southwest

Tue, Dec 1 - Wed, Dec 2

1:25 pm - 10:45 pmONT Ontario-PIT Pittsburgh

6h 20m1 stop Las Vegas Harry Reid Intl

5:50 am - 12:10 pmPIT Pittsburgh-ONT Ontario

9h 20m2 stops Denver Intl Phoenix Sky Harbor Intl

$330Southwest

Sat, Dec 5 - Tue, Dec 8

12:20 pm - 10:30 pmONT Ontario-PIT Pittsburgh

7h 10m1 stop Atlanta Hartsfield-Jackson

5:35 pm - 11:57 pmPIT Pittsburgh-ONT Ontario

9h 22m1 stop Salt Lake City

$379Delta

Thu, Dec 3 - Sun, Dec 6

11:52 am - 10:58 amONT Ontario-PIT Pittsburgh

20h 06m2 stops Denver Intl Orlando

6:59 pm - 5:23 pmPIT Pittsburgh-ONT Ontario

25h 24m2 stops Orlando Houston George Bush Intcntl

$388Frontier

Wed, Nov 18 - Sat, Nov 21

12:18 pm - 12:46 amONT Ontario-PIT Pittsburgh

9h 28m1 stop Atlanta Hartsfield-Jackson

5:35 pm - 11:57 pmPIT Pittsburgh-ONT Ontario

9h 22m1 stop Salt Lake City

$392Delta

Tue, Nov 24 - Wed, Dec 2

11:40 am - 6:04 pmONT Ontario-PIT Pittsburgh

27h 24m2 stops Denver Intl Orlando

6:59 pm - 10:20 pmPIT Pittsburgh-ONT Ontario

30h 21m2 stops Orlando Denver Intl

$402Frontier

Wed, Nov 25 - Mon, Nov 30

Cheap last minute flights

Enter your travel dates to find the best prices.

11:52 am - 5:32 pmONT Ontario-PIT Pittsburgh

26h 40m2 stops Denver Intl Orlando

8:15 am - 7:36 pmPIT Pittsburgh-ONT Ontario

14h 21m3 stops Bradford Washington, D.C. Dulles Intl Las Vegas Harry Reid Intl

$642Multiple Airlines

Wed, Nov 4 - Thu, Nov 26

5:07 pm - 5:32 pmONT Ontario-PIT Pittsburgh

21h 25m2 stops Las Vegas Harry Reid Intl Orlando

6:27 pm - 10:35 amPIT Pittsburgh-ONT Ontario

19h 08m2 stops Orlando Denver Intl

$778Frontier

Wed, Nov 4 - Sun, Nov 8

5:07 pm - 5:32 pmONT Ontario-PIT Pittsburgh

21h 25m2 stops Las Vegas Harry Reid Intl Orlando

6:27 pm - 10:35 amPIT Pittsburgh-ONT Ontario

19h 08m2 stops Orlando Denver Intl

$787Frontier

Wed, Nov 4 - Sun, Nov 8

5:07 pm - 5:32 pmONT Ontario-PIT Pittsburgh

21h 25m2 stops Las Vegas Harry Reid Intl Orlando

6:27 pm - 10:35 amPIT Pittsburgh-ONT Ontario

19h 08m2 stops Orlando Denver Intl

$789Frontier

Wed, Nov 4 - Sun, Nov 8

8:03 pm - 5:07 pmONT Ontario-PIT Pittsburgh

18h 04m3 stops Dallas/Fort Worth Washington, D.C. Dulles Intl DuBois Jefferson County

6:27 pm - 10:35 amPIT Pittsburgh-ONT Ontario

19h 08m2 stops Orlando Denver Intl

$819Multiple Airlines

Sun, Nov 1 - Sun, Nov 8

12:02 pm - 8:36 pmONT Ontario-PIT Pittsburgh

29h 34m1 stop Seattle/Tacoma Intl

8:08 am - 3:13 pmPIT Pittsburgh-ONT Ontario

10h 05m1 stop Seattle/Tacoma Intl

$856Alaska Airlines

Wed, Nov 4 - Wed, Nov 11

10:35 am - 5:32 pmONT Ontario-PIT Pittsburgh

27h 57m3 stops Las Vegas Harry Reid Intl Denver Intl Orlando

8:15 am - 7:36 pmPIT Pittsburgh-ONT Ontario

14h 21m3 stops Bradford Washington, D.C. Dulles Intl Las Vegas Harry Reid Intl

$859Multiple Airlines

Wed, Nov 4 - Thu, Nov 26

7:13 pm - 8:36 pmONT Ontario-PIT Pittsburgh

22h 23m1 stop Seattle/Tacoma Intl

8:08 am - 3:13 pmPIT Pittsburgh-ONT Ontario

10h 05m1 stop Seattle/Tacoma Intl

$862Alaska Airlines

Mon, Nov 2 - Mon, Nov 9

6:00 am - 4:07 pmONT Ontario-PIT Pittsburgh

7h 07m1 stop San Francisco

5:10 pm - 10:48 pmPIT Pittsburgh-ONT Ontario

8h 38m1 stop San Francisco

$1,015United Airlines

Wed, Nov 4 - Sun, Nov 8

1:29 pm - 10:47 pmONT Ontario-PIT Pittsburgh

6h 18m1 stop Denver Intl

5:10 pm - 9:40 pmPIT Pittsburgh-ONT Ontario

7h 30m1 stop Houston George Bush Intcntl

$1,042United Airlines

Wed, Nov 4 - Fri, Nov 6

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Frontier flights from Ontario to Pittsburgh

Our best Frontier deals on Ontario to Pittsburgh flight tickets

Frontier

Nov 18

ONT11:52 amOntario

20h 06m

2 stops

PIT10:58 amPittsburgh

Nov 21

PIT6:59 pmPittsburgh

25h 24m

2 stops

ONT5:23 pmOntario

$388

Frontier

Nov 25

ONT11:40 amOntario

27h 24m

2 stops

PIT6:04 pmPittsburgh

Nov 30

PIT6:59 pmPittsburgh

30h 21m

2 stops

ONT10:20 pmOntario

$402

Frontier

Dec 2

ONT11:30 amOntario

26h 58m

2 stops

PIT5:28 pmPittsburgh

Dec 6

PIT6:28 pmPittsburgh

20h 23m

2 stops

ONT11:51 amOntario

$413

Alaska Airlines flights from Ontario to Pittsburgh

Our best Alaska Airlines deals on Ontario to Pittsburgh flight tickets

Alaska Airlines

Jan 1

ONT6:00 amOntario

11h 30m

1 stop

PIT8:30 pmPittsburgh

Jan 6

PIT8:05 amPittsburgh

10h 15m

1 stop

ONT3:20 pmOntario

$411

Alaska Airlines

Jan 13

ONT7:00 amOntario

10h 35m

1 stop

PIT8:35 pmPittsburgh

Jan 25

PIT8:05 amPittsburgh

10h 15m

1 stop

ONT3:20 pmOntario

$429

Alaska Airlines

Dec 3

ONT5:01 pmOntario

24h 29m

1 stop

PIT8:30 pmPittsburgh

Dec 8

PIT8:00 amPittsburgh

11h 05m

1 stop

ONT4:05 pmOntario

$444

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Sat 12/5

1:40 pm-11:00 pm

1 stop6h 20m

Pittsburgh

Tue 12/8

5:00 pm-9:59 pm

1 stop7h 59m

$320

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Tue 11/17

10:30 am-10:38 pm

1 stop9h 08m

Pittsburgh

Mon 11/23

7:00 am-11:51 am

1 stop7h 51m

$325

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Sat 12/5

1:02 pm-10:36 pm

1 stop6h 34m

Pittsburgh

Tue 12/8

7:09 am-1:24 pm

1 stop9h 15m

$325

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Sat 12/5

5:00 am-6:24 pm

2 stops10h 24m

Pittsburgh

Tue 12/8

5:00 pm-9:59 pm

1 stop7h 59m

$326

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Tue 12/1

3:20 pm-12:20 am

1 stop6h 00m

Pittsburgh

Wed 12/2

5:50 am-12:10 pm

2 stops9h 20m

$330

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Sat 12/5

1:25 pm-10:45 pm

1 stop6h 20m

Pittsburgh

Tue 12/8

5:50 am-12:10 pm

2 stops9h 20m

$330

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Thu 12/3

12:20 pm-10:30 pm

1 stop7h 10m

Pittsburgh

Sun 12/6

5:35 pm-11:57 pm

1 stop9h 22m

$379

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 11/18

11:52 am-10:58 am

2 stops20h 06m

Pittsburgh

Sat 11/21

6:59 pm-5:23 pm

2 stops25h 24m

$388

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Tue 11/24

12:18 pm-12:46 am

1 stop9h 28m

Pittsburgh

Wed 12/2

5:35 pm-11:57 pm

1 stop9h 22m

$392

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 11/25

11:40 am-6:04 pm

2 stops27h 24m

Pittsburgh

Mon 11/30

6:59 pm-10:20 pm

2 stops30h 21m

$402

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

Layovers

What is the typical price of a round-trip flight between Ontario and Pittsburgh?

Prices are currently low for flights on this route.

Typical prices usually range from $372 to $516.
The lowest price recently found on this route was $320.

What is the cheapest month to fly to Pittsburgh?

In general, February 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 $304. The month of January is another great option to travel to Pittsburgh, with average flight prices from Ontario averaging around $360.

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 Tuesday when prices can be found for as low as $369. 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 $513. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

How have Ontario to Pittsburgh flight prices changed over time?

As of October 2026, prices for Ontario to Pittsburgh flights are approximately 15% 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

Best Price Found	$163
Fastest flight time	5h 55m
Direct flights	None

The best one-way flight to Pittsburgh from Ontario in the past 72 hours is $163. The best round-trip flight deal from Ontario to Pittsburgh found on momondo in the last 72 hours is $320.

The fastest flight from Ontario to Pittsburgh takes 5h 55m

There are no direct flights from Ontario to Pittsburgh. There are no popular flight routes from Ontario to Pittsburgh.

Search flight deals

Frequently asked questions about flying from Ontario to Pittsburgh

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 55m.
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 2026, 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 United Airlines with 19%, American Airlines with 19%, and Delta with 12%.

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
American Airlines	PriceFrom $285	Free Cancellation	Rating 7.0 12,210 reviews	Search American Airlines flights
United Airlines	PriceFrom $314	Free Cancellation	Rating 7.3 10,451 reviews	Search United Airlines flights
Delta	PriceFrom $316	Free Cancellation	Rating 7.8 8,692 reviews	Search Delta flights
Southwest	PriceFrom $352	Free Cancellation	Rating 7.9 4,217 reviews	Search Southwest flights

Washington

Monroeville

Wheeling

Butler

Canonsburg

West Mifflin

New Castle

Coraopolis

Moon

Belle Vernon

Triadelphia

Steubenville

Mars

Wexford

Bridgeport

Cadiz

Chester

Edgewood

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.