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Cheap flights from Pittsburgh to Los Angeles from $127

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pittsburgh to Los Angeles departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:14 pm - 11:59 pm
PIT
-
ONT
10h 45m
1 stop
Frontier Logo
2:08 pm - 3:19 pm
ONT
-
PIT
22h 11m
1 stop
$232Frontier
Mon, Feb 23 - Thu, Feb 26
Alaska Airlines Logo
7:17 pm - 9:45 am
PIT
-
ONT
17h 28m
1 stop
Alaska Airlines Logo
6:00 am - 6:21 pm
ONT
-
PIT
9h 21m
1 stop
$305Alaska Airlines
Fri, May 1 - Tue, May 5
Frontier Logo
4:14 pm - 11:59 pm
PIT
-
ONT
10h 45m
1 stop
Frontier Logo
6:00 am - 3:19 pm
ONT
-
PIT
6h 19m
1 stop
$307Frontier
Mon, Feb 23 - Fri, Feb 27
American Airlines Logo
7:19 pm - 11:59 pm
PIT
-
ONT
7h 40m
1 stop
American Airlines Logo
12:22 pm - 11:13 pm
ONT
-
PIT
7h 51m
1 stop
$315American Airlines
Wed, Mar 18 - Fri, Mar 20
Southwest Logo
5:55 pm - 10:20 pm
PIT
-
ONT
7h 25m
1 stop
Southwest Logo
1:40 pm - 11:00 pm
ONT
-
PIT
6h 20m
1 stop
$316Southwest
Wed, Mar 11 - Wed, Mar 18
Delta Logo
5:23 pm - 11:51 pm
PIT
-
ONT
9h 28m
1 stop
Delta Logo
10:15 pm - 10:44 am
ONT
-
PIT
9h 29m
1 stop
$317Delta
Tue, Mar 31 - Tue, Apr 14
United Airlines Logo
5:48 pm - 10:18 pm
PIT
-
ONT
7h 30m
1 stop
United Airlines Logo
6:37 pm - 9:41 am
ONT
-
PIT
12h 04m
2 stops
$321United Airlines
Wed, Mar 11 - Wed, Mar 18
Delta Logo
5:04 pm - 11:34 pm
PIT
-
ONT
9h 30m
2 stops
Delta Logo
12:10 pm - 10:22 pm
ONT
-
PIT
7h 12m
1 stop
$322Delta
Tue, May 19 - Wed, May 20
Delta Logo
11:55 am - 6:33 pm
PIT
-
ONT
9h 38m
1 stop
Delta Logo
10:15 pm - 9:15 am
ONT
-
PIT
8h 00m
1 stop
$325Delta
Sat, Apr 18 - Sun, Apr 26
Delta Logo
4:37 pm - 11:51 pm
PIT
-
ONT
10h 14m
2 stops
Delta Logo
6:00 am - 5:19 pm
ONT
-
PIT
8h 19m
2 stops
$326Delta
Wed, Mar 11 - Wed, Mar 18

Frontier flights from Pittsburgh to Ontario

Our best Frontier deals on Pittsburgh to Ontario flight tickets
Frontier
Feb 23
PIT4:14 pmPittsburgh
10h 45m
1 stop
ONT11:59 pmOntario
Feb 26
ONT2:08 pmOntario
22h 11m
1 stop
PIT3:19 pmPittsburgh
$232
Frontier
Feb 23
PIT4:14 pmPittsburgh
10h 45m
1 stop
ONT11:59 pmOntario
Feb 27
ONT6:00 amOntario
6h 19m
1 stop
PIT3:19 pmPittsburgh
$307
Frontier
Feb 16
PIT4:14 pmPittsburgh
10h 45m
1 stop
ONT11:59 pmOntario
Feb 20
ONT6:00 amOntario
6h 59m
1 stop
PIT3:59 pmPittsburgh
$346

Alaska Airlines flights from Pittsburgh to Ontario

Our best Alaska Airlines deals on Pittsburgh to Ontario flight tickets
Alaska Airlines
May 1
PIT7:17 pmPittsburgh
17h 28m
1 stop
ONT9:45 amOntario
May 5
ONT6:00 amOntario
9h 21m
1 stop
PIT6:21 pmPittsburgh
$305
Alaska Airlines
Apr 24
PIT7:17 pmPittsburgh
17h 28m
1 stop
ONT9:45 amOntario
Apr 29
ONT6:00 amOntario
9h 21m
1 stop
PIT6:21 pmPittsburgh
$333
Alaska Airlines
Apr 22
PIT7:17 pmPittsburgh
31h 31m
2 stops
ONT11:48 pmOntario
Apr 29
ONT6:00 amOntario
9h 21m
1 stop
PIT6:21 pmPittsburgh
$345

momondo Fare Finder

 
Customize your flight search to find flights from Pittsburgh to Ontario 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 February 12, 2026.
Use the filters below to find and compare flights from Pittsburgh to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/23

4:14 pm-11:59 pm

1 stop10h 45m

Ontario

Thu 2/26

2:08 pm-3:19 pm

1 stop22h 11m

$232

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 5/1

7:17 pm-9:45 am

1 stop17h 28m

Ontario

Tue 5/5

6:00 am-6:21 pm

1 stop9h 21m

$305

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/23

4:14 pm-11:59 pm

1 stop10h 45m

Ontario

Fri 2/27

6:00 am-3:19 pm

1 stop6h 19m

$307

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 3/18

7:19 pm-11:59 pm

1 stop7h 40m

Ontario

Fri 3/20

12:22 pm-11:13 pm

1 stop7h 51m

$315

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 3/11

5:55 pm-10:20 pm

1 stop7h 25m

Ontario

Wed 3/18

1:40 pm-11:00 pm

1 stop6h 20m

$316

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 3/31

5:23 pm-11:51 pm

1 stop9h 28m

Ontario

Tue 4/14

10:15 pm-10:44 am

1 stop9h 29m

$317

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 3/11

5:48 pm-10:18 pm

1 stop7h 30m

Ontario

Wed 3/18

6:37 pm-9:41 am

2 stops12h 04m

$321

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 5/19

5:04 pm-11:34 pm

2 stops9h 30m

Ontario

Wed 5/20

12:10 pm-10:22 pm

1 stop7h 12m

$322

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 4/18

11:55 am-6:33 pm

1 stop9h 38m

Ontario

Sun 4/26

10:15 pm-9:15 am

1 stop8h 00m

$325

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 3/11

4:37 pm-11:51 pm

2 stops10h 14m

Ontario

Wed 3/18

6:00 am-5:19 pm

2 stops8h 19m

$326

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Pittsburgh to Ontario

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 Ontario?

In general, December is the cheapest month to fly from Pittsburgh to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $350. If you aren’t able to travel during the month of December, then book flights to Ontario from Pittsburgh during February instead. Flights to Ontario in February, while not as cheap as those in December, still average around $357.

How have Pittsburgh to Ontario flight prices changed over time?

When to book flights from Pittsburgh to Ontario

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

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

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

Fastest flight time

7h 17m

Direct flights

None
The fastest flight from Pittsburgh to Ontario takes 7h 17m
There are no direct flights from Pittsburgh to Ontario. There are no popular flight routes from Pittsburgh to Ontario.
Search flight deals

  • How far is Pittsburgh to Ontario by plane?

    Pittsburgh and Ontario are 2099.2 mi apart from one another. In terms of flight time, this usually takes a little over 7h 17m.

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

    Prices for flights from Pittsburgh Airport to Ontario Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pittsburgh Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario 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 Ontario 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 Pittsburgh to Ontario?

Best airlines flying from Pittsburgh to Ontario

Compare and see reviews for airlines that fly from Pittsburgh to Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $296Free CancellationRating
7.4
9,279 reviews
Search United Airlines flights
DeltaPriceFrom $296Free CancellationRating
7.9
8,180 reviews
Search Delta flights
SouthwestPriceFrom $303Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,271 reviews
Search American Airlines flights

  • United Airlines Flights From Pittsburgh to Ontario

    United Airlines flies from Pittsburgh to Ontario around 3 times per week, with 9,279 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Pittsburgh to Ontario in the last 72 hours was $296 (round-trip), much lower than the average airfare cost of $475 for United Airlines flights on this route.

Why use momondo?

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

Finding the right flight to Ontario from Pittsburgh is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

Yes. All flights to Ontario from Pittsburgh on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Pittsburgh and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Pittsburgh to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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