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Cheap flights from Pittsburgh to Los Angeles from $90

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 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
6:10 am - 3:19 pm
ONT
-
PIT
6h 09m
1 stop
$255Frontier
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
6:30 am - 12:48 pm
PIT
-
ONT
9h 18m
1 stop
United Airlines Logo
5:00 am - 3:17 pm
ONT
-
PIT
7h 17m
1 stop
$257United Airlines
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
11:23 am - 8:50 pm
PIT
-
ONT
12h 27m
2 stops
United Airlines Logo
5:00 am - 3:17 pm
ONT
-
PIT
7h 17m
1 stop
$262United Airlines
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
7:00 am - 12:43 pm
PIT
-
ONT
8h 43m
2 stops
United Airlines Logo
6:37 pm - 9:35 am
ONT
-
PIT
11h 58m
2 stops
$268United Airlines
Wed, Feb 25 - Wed, Mar 4
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
$269Frontier
Mon, Feb 23 - Fri, Feb 27
Frontier Logo
7:59 pm - 9:34 pm
PIT
-
ONT
28h 35m
1 stop
Frontier Logo
2:08 pm - 3:59 pm
ONT
-
PIT
22h 51m
1 stop
$273Frontier
Mon, Feb 9 - Thu, Feb 12
Frontier Logo
4:14 pm - 11:59 pm
PIT
-
ONT
10h 45m
1 stop
Frontier Logo
6:10 am - 3:19 pm
ONT
-
PIT
6h 09m
1 stop
$276Frontier
Fri, Feb 27 - Mon, Mar 2
United Airlines Logo
5:53 pm - 10:30 pm
PIT
-
ONT
7h 37m
1 stop
United Airlines Logo
1:40 pm - 11:49 pm
ONT
-
PIT
7h 09m
1 stop
$277United Airlines
Tue, May 19 - Wed, May 20
Southwest Logo
6:05 am - 11:55 am
PIT
-
ONT
8h 50m
2 stops
Southwest Logo
6:15 am - 3:40 pm
ONT
-
PIT
6h 25m
1 stop
$282Southwest
Tue, May 19 - Wed, May 20
United Airlines Logo
4:42 pm - 9:59 pm
PIT
-
ONT
8h 17m
1 stop
United Airlines Logo
1:45 pm - 10:57 pm
ONT
-
PIT
6h 12m
1 stop
$286United Airlines
Wed, Feb 25 - Mon, Mar 2

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
Mar 2
ONT6:10 amOntario
6h 09m
1 stop
PIT3:19 pmPittsburgh
$255
Frontier
Feb 2
PIT7:59 pmPittsburgh
7h 21m
1 stop
ONT12:20 amOntario
Feb 6
ONT6:20 amOntario
9h 44m
1 stop
PIT7:04 pmPittsburgh
$256
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
$269

American Airlines flights from Pittsburgh to Ontario

Our best American Airlines deals on Pittsburgh to Ontario flight tickets
American Airlines
Apr 14
PIT3:11 pmPittsburgh
8h 43m
1 stop
ONT8:54 pmOntario
Apr 20
ONT11:29 pmOntario
7h 45m
1 stop
PIT10:14 amPittsburgh
$294
American Airlines
Feb 25
PIT11:34 amPittsburgh
7h 45m
1 stop
ONT4:19 pmOntario
Mar 2
ONT11:58 pmOntario
7h 46m
1 stop
PIT10:44 amPittsburgh
$296
American Airlines
Apr 14
PIT9:19 amPittsburgh
12h 05m
2 stops
ONT6:24 pmOntario
Apr 20
ONT11:29 pmOntario
7h 45m
1 stop
PIT10:14 amPittsburgh
$299

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 January 28, 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

Mon 3/2

6:10 am-3:19 pm

1 stop6h 09m

$255

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

6:30 am-12:48 pm

1 stop9h 18m

Ontario

Wed 3/4

5:00 am-3:17 pm

1 stop7h 17m

$257

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

11:23 am-8:50 pm

2 stops12h 27m

Ontario

Wed 3/4

5:00 am-3:17 pm

1 stop7h 17m

$262

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

7:00 am-12:43 pm

2 stops8h 43m

Ontario

Wed 3/4

6:37 pm-9:35 am

2 stops11h 58m

$268

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

$269

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/9

7:59 pm-9:34 pm

1 stop28h 35m

Ontario

Thu 2/12

2:08 pm-3:59 pm

1 stop22h 51m

$273

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 2/27

4:14 pm-11:59 pm

1 stop10h 45m

Ontario

Mon 3/2

6:10 am-3:19 pm

1 stop6h 09m

$276

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 5/19

5:53 pm-10:30 pm

1 stop7h 37m

Ontario

Wed 5/20

1:40 pm-11:49 pm

1 stop7h 09m

$277

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 5/19

6:05 am-11:55 am

2 stops8h 50m

Ontario

Wed 5/20

6:15 am-3:40 pm

1 stop6h 25m

$282

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

4:42 pm-9:59 pm

1 stop8h 17m

Ontario

Mon 3/2

1:45 pm-10:57 pm

1 stop6h 12m

$286

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 April instead. Flights to Ontario in April, while not as cheap as those in December, still average around $382.

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

6h 50m

Direct flights

None
The fastest flight from Pittsburgh to Ontario takes 6h 50m
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 6h 50m.

  • 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
9,206 reviews
Search United Airlines flights
SouthwestPriceFrom $303Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,198 reviews
Search American Airlines flights

  • United Airlines Flights From Pittsburgh to Ontario

    United Airlines flies from Pittsburgh to Ontario around 7 times per week, with 9,206 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 $448 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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