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Cheap flights from Pittsburgh to Los Angeles from $118

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 2/27. 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

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Frontier Logo
7:59 pm - 12:20 am
PIT
-
ONT
7h 21m
1 stop
Frontier Logo
2:08 pm - 3:59 pm
ONT
-
PIT
22h 51m
1 stop
$191Frontier
Mon, Feb 2 - Thu, Feb 12
Frontier Logo
7:59 pm - 12:20 am
PIT
-
ONT
7h 21m
1 stop
Frontier Logo
6:20 am - 7:04 pm
ONT
-
PIT
9h 44m
1 stop
$201Frontier
Mon, Feb 2 - Mon, Feb 9
Frontier Logo
7:59 pm - 11:24 pm
PIT
-
ONT
30h 25m
1 stop
Frontier Logo
6:20 am - 7:04 pm
ONT
-
PIT
9h 44m
1 stop
$227Frontier
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
7:59 pm - 12:20 am
PIT
-
ONT
7h 21m
1 stop
Frontier Logo
6:20 am - 7:04 pm
ONT
-
PIT
9h 44m
1 stop
$242Frontier
Mon, Feb 2 - Fri, Feb 6
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
$256Frontier
Mon, Feb 23 - Fri, Feb 27
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
$257United Airlines
Wed, Feb 25 - Wed, Mar 4
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
$262Frontier
Mon, Feb 23 - Mon, Mar 2
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
$264Frontier
Mon, Feb 16 - Fri, Feb 27
Alaska Airlines Logo
7:31 pm - 11:32 pm
PIT
-
ONT
31h 01m
1 stop
Alaska Airlines Logo
6:14 am - 6:35 pm
ONT
-
PIT
9h 21m
1 stop
$265Alaska Airlines
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
7:00 am - 12:43 pm
PIT
-
ONT
8h 43m
2 stops
United Airlines Logo
6:37 pm - 9:41 am
ONT
-
PIT
12h 04m
2 stops
$268United Airlines
Wed, Feb 25 - Wed, Mar 4

United Airlines flights from Pittsburgh to Ontario

Our best United Airlines deals on Pittsburgh to Ontario flight tickets
United Airlines
Feb 25
PIT4:42 pmPittsburgh
8h 17m
1 stop
ONT9:59 pmOntario
Mar 4
ONT1:45 pmOntario
6h 12m
1 stop
PIT10:57 pmPittsburgh
$257
United Airlines
Feb 25
PIT7:00 amPittsburgh
8h 43m
2 stops
ONT12:43 pmOntario
Mar 4
ONT6:37 pmOntario
12h 04m
2 stops
PIT9:41 amPittsburgh
$268
United Airlines
Feb 21
PIT4:20 pmPittsburgh
7h 30m
1 stop
ONT8:50 pmOntario
Feb 23
ONT6:37 pmOntario
11h 45m
2 stops
PIT9:22 amPittsburgh
$291

American Airlines flights from Pittsburgh to Ontario

Our best American Airlines deals on Pittsburgh to Ontario flight tickets
American Airlines
Feb 21
PIT11:34 amPittsburgh
7h 45m
1 stop
ONT4:19 pmOntario
Feb 23
ONT11:59 pmOntario
7h 23m
1 stop
PIT10:22 amPittsburgh
$286
American Airlines
Feb 14
PIT11:34 amPittsburgh
10h 35m
2 stops
ONT7:09 pmOntario
Feb 22
ONT7:05 pmOntario
11h 07m
2 stops
PIT9:12 amPittsburgh
$316
American Airlines
Jan 28
PIT7:06 amPittsburgh
14h 39m
1 stop
ONT6:45 pmOntario
Feb 3
ONT10:58 amOntario
8h 51m
1 stop
PIT10:49 pmPittsburgh
$625

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 21, 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 2/2

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Thu 2/12

2:08 pm-3:59 pm

1 stop22h 51m

$191

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Mon 2/9

6:20 am-7:04 pm

1 stop9h 44m

$201

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 2/6

7:59 pm-11:24 pm

1 stop30h 25m

Ontario

Mon 2/9

6:20 am-7:04 pm

1 stop9h 44m

$227

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

7:59 pm-12:20 am

1 stop7h 21m

Ontario

Fri 2/6

6:20 am-7:04 pm

1 stop9h 44m

$242

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

$256

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

4:42 pm-9:59 pm

1 stop8h 17m

Ontario

Wed 3/4

1:45 pm-10:57 pm

1 stop6h 12m

$257

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

$262

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/16

4:14 pm-11:59 pm

1 stop10h 45m

Ontario

Fri 2/27

6:00 am-3:19 pm

1 stop6h 19m

$264

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/18

7:31 pm-11:32 pm

1 stop31h 01m

Ontario

Wed 2/25

6:14 am-6:35 pm

1 stop9h 21m

$265

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/25

7:00 am-12:43 pm

2 stops8h 43m

Ontario

Wed 3/4

6:37 pm-9:41 am

2 stops12h 04m

$268

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 47m

Direct flights

None
The fastest flight from Pittsburgh to Ontario takes 6h 47m
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 47m.

  • 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
9,191 reviews
Search United Airlines flights
SouthwestPriceFrom $303Free CancellationRating
8.0
4,266 reviews
Search Southwest flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,174 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 9,191 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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