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

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

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

Flights via Phoenix (PHX) offer the lowest average round-trip price of $390.

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

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 6h 40m.

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

Phoenix (PHX) has the shortest average layover time for this route: 1h 13m.

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 44% 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.

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 August 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.

$145 Cheap Flights from Ontario to Pittsburgh in 2026

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.

4:03 pm - 5:35 amONT Ontario-PIT Pittsburgh

10h 32m1 stop San Francisco

5:06 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 53m1 stop Houston George Bush Intcntl

$332United Airlines

Wed, Oct 14 - Sat, Oct 17

6:08 am - 4:09 pmONT Ontario-PIT Pittsburgh

7h 01m1 stop San Francisco

5:06 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 53m1 stop Houston George Bush Intcntl

$332United Airlines

Sat, Sep 19 - Sat, Sep 26

1:05 pm - 10:56 pmONT Ontario-PIT Pittsburgh

6h 51m1 stop Phoenix Sky Harbor Intl

6:00 am - 11:53 amPIT Pittsburgh-ONT Ontario

8h 53m1 stop Dallas/Fort Worth

$337American Airlines

Wed, Oct 14 - Tue, Oct 20

12:19 pm - 12:31 amONT Ontario-PIT Pittsburgh

9h 12m1 stop Atlanta Hartsfield-Jackson

5:30 pm - 11:47 pmPIT Pittsburgh-ONT Ontario

9h 17m1 stop Salt Lake City

$337Delta

Thu, Sep 17 - Mon, Oct 5

11:15 pm - 10:06 amONT Ontario-PIT Pittsburgh

7h 51m1 stop Atlanta Hartsfield-Jackson

5:50 am - 11:06 amPIT Pittsburgh-ONT Ontario

8h 16m1 stop Atlanta Hartsfield-Jackson

$337Delta

Thu, Oct 22 - Tue, Oct 27

10:55 am - 9:25 pmONT Ontario-PIT Pittsburgh

7h 30m1 stop Phoenix Sky Harbor Intl

6:00 am - 12:55 pmPIT Pittsburgh-ONT Ontario

9h 55m2 stops Denver Intl Phoenix Sky Harbor Intl

$342Southwest

Wed, Oct 14 - Tue, Oct 20

1:20 pm - 11:40 pmONT Ontario-PIT Pittsburgh

7h 20m1 stop Denver Intl

7:45 pm - 11:35 pmPIT Pittsburgh-ONT Ontario

6h 50m1 stop Las Vegas Harry Reid Intl

$353Southwest

Fri, Nov 6 - Mon, Nov 9

12:37 pm - 10:59 pmONT Ontario-PIT Pittsburgh

7h 22m1 stop Dallas/Fort Worth

6:24 pm - 10:37 pmPIT Pittsburgh-ONT Ontario

7h 13m1 stop Dallas/Fort Worth

$357American Airlines

Wed, Sep 9 - Tue, Sep 15

3:14 pm - 5:25 amONT Ontario-PIT Pittsburgh

11h 11m1 stop Seattle/Tacoma Intl

6:28 pm - 11:16 amPIT Pittsburgh-ONT Ontario

19h 48m1 stop Seattle/Tacoma Intl

$369Alaska Airlines

Thu, Sep 17 - Tue, Sep 22

3:14 pm - 5:25 amONT Ontario-PIT Pittsburgh

11h 11m1 stop Seattle/Tacoma Intl

7:02 am - 2:16 pmPIT Pittsburgh-ONT Ontario

10h 14m1 stop Seattle/Tacoma Intl

$369Alaska Airlines

Thu, Sep 17 - Wed, Sep 23

Cheap last minute flights

Enter your travel dates to find the best prices.

7:59 pm - 5:25 pmONT Ontario-PIT Pittsburgh

18h 26m1 stop Seattle/Tacoma Intl

6:23 pm - 11:04 amPIT Pittsburgh-ONT Ontario

19h 41m1 stop Seattle/Tacoma Intl

$807Alaska Airlines

Fri, Aug 28 - Fri, Sep 4

12:00 pm - 5:24 amONT Ontario-PIT Pittsburgh

14h 24m1 stop Seattle/Tacoma Intl

6:23 pm - 11:04 amPIT Pittsburgh-ONT Ontario

19h 41m1 stop Seattle/Tacoma Intl

$877Alaska Airlines

Thu, Aug 27 - Thu, Sep 3

4:50 pm - 5:25 pmONT Ontario-PIT Pittsburgh

21h 35m2 stops Boise Air Term. Gowen Fld Seattle/Tacoma Intl

6:23 pm - 11:04 amPIT Pittsburgh-ONT Ontario

19h 41m1 stop Seattle/Tacoma Intl

$880Alaska Airlines

Fri, Aug 28 - Fri, Sep 4

1:18 pm - 10:45 pmONT Ontario-PIT Pittsburgh

6h 27m1 stop Denver Intl

5:03 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 56m1 stop Houston George Bush Intcntl

$1,002United Airlines

Thu, Aug 27 - Mon, Aug 31

12:33 pm - 10:48 pmONT Ontario-PIT Pittsburgh

7h 15m1 stop Dallas/Fort Worth

6:00 am - 11:43 amPIT Pittsburgh-ONT Ontario

8h 43m1 stop Dallas/Fort Worth

$1,007American Airlines

Fri, Aug 28 - Sun, Aug 30

8:30 am - 7:15 pmONT Ontario-PIT Pittsburgh

7h 45m2 stops Las Vegas Harry Reid Intl Denver Intl

6:25 pm - 10:00 pmPIT Pittsburgh-ONT Ontario

6h 35m1 stop Denver Intl

$1,012Southwest

Fri, Aug 28 - Sun, Aug 30

6:00 am - 6:45 pmONT Ontario-PIT Pittsburgh

9h 45m2 stops Dallas/Fort Worth Charlotte Douglas

5:00 am - 11:43 amPIT Pittsburgh-ONT Ontario

9h 43m2 stops Charlotte Douglas Dallas/Fort Worth

$1,017American Airlines

Fri, Aug 28 - Sun, Aug 30

5:00 am - 2:35 pmONT Ontario-PIT Pittsburgh

6h 35m1 stop Denver Intl

5:03 pm - 9:59 pmPIT Pittsburgh-ONT Ontario

7h 56m1 stop Houston George Bush Intcntl

$1,072United Airlines

Tue, Aug 25 - Sun, Aug 30

9:40 am - 8:50 pmONT Ontario-PIT Pittsburgh

8h 10m1 stop Las Vegas Harry Reid Intl

6:25 am - 10:00 amPIT Pittsburgh-ONT Ontario

6h 35m1 stop Denver Intl

$1,077Southwest

Tue, Aug 25 - Sun, Aug 30

10:00 pm - 10:52 amONT Ontario-PIT Pittsburgh

9h 52m1 stop Atlanta Hartsfield-Jackson

5:50 am - 10:42 amPIT Pittsburgh-ONT Ontario

7h 52m1 stop Atlanta Hartsfield-Jackson

$1,147Delta

Mon, Aug 24 - Fri, Aug 28

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American Airlines flights from Ontario to Pittsburgh

Our best American Airlines deals on Ontario to Pittsburgh flight tickets

American Airlines

Oct 22

ONT1:05 pmOntario

6h 51m

1 stop

PIT10:56 pmPittsburgh

Oct 27

PIT7:41 amPittsburgh

10h 35m

2 stops

ONT3:16 pmOntario

$389

American Airlines

Oct 22

ONT1:05 pmOntario

6h 51m

1 stop

PIT10:56 pmPittsburgh

Oct 27

PIT7:41 amPittsburgh

10h 35m

2 stops

ONT3:16 pmOntario

$392

American Airlines

Oct 14

ONT7:34 pmOntario

10h 02m

2 stops

PIT8:36 amPittsburgh

Oct 17

PIT5:00 amPittsburgh

10h 14m

2 stops

ONT12:14 pmOntario

$402

Delta flights from Ontario to Pittsburgh

Our best Delta deals on Ontario to Pittsburgh flight tickets

Delta

Oct 22

ONT11:15 pmOntario

7h 51m

1 stop

PIT10:06 amPittsburgh

Oct 26

PIT5:46 pmPittsburgh

9h 09m

1 stop

ONT11:55 pmOntario

$337

Delta

Sep 9

ONT12:17 pmOntario

9h 14m

1 stop

PIT12:31 amPittsburgh

Sep 15

PIT5:30 pmPittsburgh

9h 17m

1 stop

ONT11:47 pmOntario

$357

Delta

Oct 22

ONT11:15 pmOntario

7h 51m

1 stop

PIT10:06 amPittsburgh

Oct 26

PIT5:46 pmPittsburgh

9h 09m

1 stop

ONT11:55 pmOntario

$377

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 10/14

4:03 pm-5:35 am

1 stop10h 32m

Pittsburgh

Sat 10/17

5:06 pm-9:59 pm

1 stop7h 53m

$332

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Sat 9/19

6:08 am-4:09 pm

1 stop7h 01m

Pittsburgh

Sat 9/26

5:06 pm-9:59 pm

1 stop7h 53m

$332

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 10/14

1:05 pm-10:56 pm

1 stop6h 51m

Pittsburgh

Tue 10/20

6:00 am-11:53 am

1 stop8h 53m

$337

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Thu 9/17

12:19 pm-12:31 am

1 stop9h 12m

Pittsburgh

Mon 10/5

5:30 pm-11:47 pm

1 stop9h 17m

$337

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Thu 10/22

11:15 pm-10:06 am

1 stop7h 51m

Pittsburgh

Tue 10/27

5:50 am-11:06 am

1 stop8h 16m

$337

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 10/14

10:55 am-9:25 pm

1 stop7h 30m

Pittsburgh

Tue 10/20

6:00 am-12:55 pm

2 stops9h 55m

$342

Quickest round-trip

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Fri 11/6

1:20 pm-11:40 pm

1 stop7h 20m

Pittsburgh

Mon 11/9

7:45 pm-11:35 pm

1 stop6h 50m

$353

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Wed 9/9

12:37 pm-10:59 pm

1 stop7h 22m

Pittsburgh

Tue 9/15

6:24 pm-10:37 pm

1 stop7h 13m

$357

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Thu 9/17

3:14 pm-5:25 am

1 stop11h 11m

Pittsburgh

Tue 9/22

6:28 pm-11:16 am

1 stop19h 48m

$369

OntarioPittsburgh

ONT Ontario - PIT Pittsburgh

ONTPIT

Ontario

Thu 9/17

3:14 pm-5:25 am

1 stop11h 11m

Pittsburgh

Wed 9/23

7:02 am-2:16 pm

1 stop10h 14m

$369

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 $413 to $699.
The lowest price recently found on this route was $332.

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 December is another great option to travel to Pittsburgh, with average flight prices from Ontario averaging around $341.

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 $338. 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 $506. 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 August 2026, prices for Ontario to Pittsburgh flights are approximately 153% 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	$145
Fastest flight time	6h 35m
Direct flights	None

The best one-way flight to Pittsburgh from Ontario in the past 72 hours is $145. The best round-trip flight deal from Ontario to Pittsburgh found on momondo in the last 72 hours is $332.

The fastest flight from Ontario to Pittsburgh takes 6h 35m

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 6h 35m.
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 August 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 51% of the total bookings. Other popular airlines include American Airlines with 19%, United Airlines with 18%, and Delta with 11%.

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 7.1 11,981 reviews	Search American Airlines flights
Delta	PriceFrom $307	Free Cancellation	Rating 7.8 8,514 reviews	Search Delta flights
United Airlines	PriceFrom $310	Free Cancellation	Rating 7.4 10,113 reviews	Search United Airlines flights
Southwest	PriceFrom $314	Free Cancellation	Rating 8.0 4,213 reviews	Search Southwest flights

Washington

Monroeville

Wheeling

Butler

Canonsburg

New Castle

Moon

West Mifflin

Coraopolis

Triadelphia

Belle Vernon

Steubenville

Mars

Cadiz

Bridgeport

Chester

Wexford

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.