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Cheap flights from Pittsburgh to Los Angeles from $173

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 9/26. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Pittsburgh to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:03 pm - 9:59 pm
PIT
-
ONT
7h 56m
1 stop
United Airlines Logo
1:18 pm - 10:45 pm
ONT
-
PIT
6h 27m
1 stop
$350United Airlines
Thu, Aug 20 - Mon, Aug 24
United Airlines Logo
5:06 pm - 9:59 pm
PIT
-
ONT
7h 53m
1 stop
United Airlines Logo
6:00 am - 3:49 pm
ONT
-
PIT
6h 49m
1 stop
$350United Airlines
Sat, Sep 26 - Sat, Oct 3
Alaska Airlines Logo
6:28 pm - 11:16 am
PIT
-
ONT
19h 48m
1 stop
Alaska Airlines Logo
12:12 pm - 5:25 am
ONT
-
PIT
14h 13m
1 stop
$354Alaska Airlines
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
8:10 am - 2:10 pm
PIT
-
ONT
9h 00m
1 stop
Southwest Logo
2:00 pm - 10:50 pm
ONT
-
PIT
5h 50m
1 stop
$355Southwest
Thu, Oct 1 - Tue, Oct 6
Southwest Logo
2:05 pm - 7:20 pm
PIT
-
ONT
8h 15m
1 stop
Southwest Logo
11:55 pm - 11:20 am
ONT
-
PIT
8h 25m
1 stop
$355Southwest
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
6:00 am - 11:43 am
PIT
-
ONT
8h 43m
1 stop
American Airlines Logo
12:59 pm - 10:27 pm
ONT
-
PIT
6h 28m
1 stop
$355American Airlines
Thu, Aug 27 - Mon, Aug 31
American Airlines Logo
6:24 pm - 10:37 pm
PIT
-
ONT
7h 13m
1 stop
American Airlines Logo
10:25 am - 10:59 pm
ONT
-
PIT
9h 34m
1 stop
$355American Airlines
Tue, Sep 22 - Tue, Sep 29
Delta Logo
5:50 am - 10:42 am
PIT
-
ONT
7h 52m
1 stop
Delta Logo
12:00 pm - 12:36 am
ONT
-
PIT
9h 36m
1 stop
$355Delta
Wed, Aug 26 - Wed, Sep 2
Delta Logo
5:50 am - 10:42 am
PIT
-
ONT
7h 52m
1 stop
Delta Logo
12:00 pm - 11:34 pm
ONT
-
PIT
8h 34m
1 stop
$355Delta
Wed, Aug 26 - Sat, Aug 29
Alaska Airlines Logo
7:02 am - 2:16 pm
PIT
-
ONT
10h 14m
1 stop
Alaska Airlines Logo
3:14 pm - 5:25 am
ONT
-
PIT
11h 11m
1 stop
$355Alaska Airlines
Wed, Sep 16 - Sat, Sep 19

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Alaska Airlines flights from Pittsburgh to Ontario

Our best Alaska Airlines deals on Pittsburgh to Ontario flight tickets
Alaska Airlines
Sep 8
PIT6:28 pmPittsburgh
19h 48m
1 stop
ONT11:16 amOntario
Sep 15
ONT12:12 pmOntario
14h 13m
1 stop
PIT5:25 amPittsburgh
$354
Alaska Airlines
Sep 14
PIT7:02 amPittsburgh
10h 14m
1 stop
ONT2:16 pmOntario
Sep 17
ONT3:14 pmOntario
11h 11m
1 stop
PIT5:25 amPittsburgh
$410
Alaska Airlines
Sep 19
PIT7:02 amPittsburgh
12h 08m
2 stops
ONT4:10 pmOntario
Sep 21
ONT7:59 pmOntario
18h 31m
1 stop
PIT5:30 pmPittsburgh
$433

Delta flights from Pittsburgh to Ontario

Our best Delta deals on Pittsburgh to Ontario flight tickets
Delta
Sep 9
PIT5:30 pmPittsburgh
7h 34m
1 stop
ONT10:04 pmOntario
Sep 14
ONT10:00 pmOntario
9h 11m
1 stop
PIT10:11 amPittsburgh
$365
Delta
Dec 25
PIT5:35 pmPittsburgh
9h 13m
1 stop
ONT11:48 pmOntario
Jan 14
ONT6:00 amOntario
7h 41m
1 stop
PIT4:41 pmPittsburgh
$370
Delta
Aug 27
PIT5:50 amPittsburgh
7h 52m
1 stop
ONT10:42 amOntario
Sep 2
ONT12:00 pmOntario
9h 36m
1 stop
PIT12:36 amPittsburgh
$387

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 July 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

Cheapest round-trip
Quickest round-trip

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 8/20

5:03 pm-9:59 pm

1 stop7h 56m

Ontario

Mon 8/24

1:18 pm-10:45 pm

1 stop6h 27m

$350

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 9/26

5:06 pm-9:59 pm

1 stop7h 53m

Ontario

Sat 10/3

6:00 am-3:49 pm

1 stop6h 49m

$350

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/8

6:28 pm-11:16 am

1 stop19h 48m

Ontario

Tue 9/15

12:12 pm-5:25 am

1 stop14h 13m

$354

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 10/1

8:10 am-2:10 pm

1 stop9h 00m

Ontario

Tue 10/6

2:00 pm-10:50 pm

1 stop5h 50m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 9/17

2:05 pm-7:20 pm

1 stop8h 15m

Ontario

Mon 9/21

11:55 pm-11:20 am

1 stop8h 25m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Thu 8/27

6:00 am-11:43 am

1 stop8h 43m

Ontario

Mon 8/31

12:59 pm-10:27 pm

1 stop6h 28m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 9/22

6:24 pm-10:37 pm

1 stop7h 13m

Ontario

Tue 9/29

10:25 am-10:59 pm

1 stop9h 34m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 8/26

5:50 am-10:42 am

1 stop7h 52m

Ontario

Wed 9/2

12:00 pm-12:36 am

1 stop9h 36m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 8/26

5:50 am-10:42 am

1 stop7h 52m

Ontario

Sat 8/29

12:00 pm-11:34 pm

1 stop8h 34m

$355

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 9/16

7:02 am-2:16 pm

1 stop10h 14m

Ontario

Sat 9/19

3:14 pm-5:25 am

1 stop11h 11m

$355

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, September 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 $305. If you aren’t able to travel during the month of September, then book flights to Ontario from Pittsburgh during February instead. Flights to Ontario in February, while not as cheap as those in September, 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

6h 56m

Direct flights

None
The fastest flight from Pittsburgh to Ontario takes 6h 56m
There are no direct flights from Pittsburgh to Ontario. There are no popular flight routes from Pittsburgh to Ontario.
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Frequently asked questions about flying from Pittsburgh to Ontario

  • 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 56m.

  • 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
DeltaPriceFrom $296Free CancellationRating
7.8
8,482 reviews
Search Delta flights
United AirlinesPriceFrom $303Free CancellationRating
7.4
10,046 reviews
Search United Airlines flights
SouthwestPriceFrom $305Free CancellationRating
8.0
4,228 reviews
Search Southwest flights
American AirlinesPriceFrom $314Free CancellationRating
7.1
11,839 reviews
Search American Airlines flights

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.

An easier way to manage your Ontario trip

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