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Cheap flights from Pittsburgh to Los Angeles from $149

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 11/17. 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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Find the cheapest flights from Pittsburgh to Los Angeles

Cheap round-trip flights

Logo
10:32 pm - 9:10 amPIT-ONT
13h 38m1 stop
Logo
12:05 pm - 4:35 pmONT-PIT
25h 30m1 stop
$208
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Wed, Nov 5 - Thu, Nov 13
Logo
5:17 pm - 8:17 amPIT-ONT
18h 00m1 stop
Logo
10:43 pm - 4:09 pmONT-PIT
14h 26m1 stop
$210
Find Deal
Sat, Nov 1 - Mon, Nov 3
Frontier Logo
5:40 pm - 11:50 pmPIT-ONT
9h 10m1 stop
Frontier Logo
6:53 am - 4:35 pmONT-PIT
6h 42m1 stop
$271Frontier
Find Deal
Fri, Oct 24 - Mon, Nov 3
Frontier Logo
5:40 pm - 11:50 pmPIT-ONT
9h 10m1 stop
Frontier Logo
6:53 am - 4:38 pmONT-PIT
6h 45m1 stop
$291Frontier
Find Deal
Fri, Oct 24 - Sun, Oct 26
American Airlines Logo
8:15 am - 4:01 pmPIT-ONT
10h 46m2 stops
American Airlines Logo
10:47 am - 10:04 pmONT-PIT
8h 17m1 stop
$322American Airlines
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Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
8:15 am - 4:01 pmPIT-ONT
10h 46m2 stops
American Airlines Logo
9:59 am - 12:04 amONT-PIT
11h 05m2 stops
$327American Airlines
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Wed, Dec 3 - Wed, Dec 10
Southwest Logo
5:10 am - 9:10 amPIT-ONT
7h 00m1 stop
Southwest Logo
2:15 pm - 11:30 pmONT-PIT
6h 15m1 stop
$333Southwest
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Sun, Nov 16 - Mon, Nov 24
Southwest Logo
5:50 am - 10:40 amPIT-ONT
7h 50m1 stop
Southwest Logo
6:30 am - 4:20 pmONT-PIT
6h 50m1 stop
$334Southwest
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Mon, Feb 2 - Wed, Feb 11
United Airlines Logo
4:15 pm - 8:58 pmPIT-ONT
7h 43m1 stop
United Airlines Logo
6:39 pm - 9:30 amONT-PIT
11h 51m2 stops
$335United Airlines
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Mon, Feb 2 - Wed, Feb 11
United Airlines Logo
4:55 pm - 9:24 pmPIT-ONT
7h 29m1 stop
United Airlines Logo
6:00 am - 3:49 pmONT-PIT
6h 49m1 stop
$410United Airlines
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Sat, Oct 11 - Sat, Oct 18

Frontier flights from Pittsburgh to Ontario

Our best Frontier deals on Pittsburgh to Ontario flight tickets
Frontier
Oct 24
PIT5:40 pmPittsburgh
9h 10m
1 stop
ONT11:50 pmOntario
Nov 3
ONT6:53 amOntario
6h 42m
1 stop
PIT4:35 pmPittsburgh
$271
Find similar
Frontier
Oct 24
PIT5:40 pmPittsburgh
9h 10m
1 stop
ONT11:50 pmOntario
Oct 26
ONT6:53 amOntario
6h 45m
1 stop
PIT4:38 pmPittsburgh
$291
Find similar
Frontier
Oct 24
PIT5:40 pmPittsburgh
17h 09m
2 stops
ONT7:49 amOntario
Nov 3
ONT6:53 amOntario
6h 42m
1 stop
PIT4:35 pmPittsburgh
$302
Find similar

Southwest flights from Pittsburgh to Ontario

Our best Southwest deals on Pittsburgh to Ontario flight tickets
Southwest
Nov 16
PIT5:10 amPittsburgh
7h 00m
1 stop
ONT9:10 amOntario
Nov 24
ONT2:15 pmOntario
6h 15m
1 stop
PIT11:30 pmPittsburgh
$333
Find similar
Southwest
Feb 2
PIT5:50 amPittsburgh
7h 50m
1 stop
ONT10:40 amOntario
Feb 11
ONT6:30 amOntario
6h 50m
1 stop
PIT4:20 pmPittsburgh
$334
Find similar
Southwest
Feb 2
PIT5:50 amPittsburgh
9h 35m
2 stops
ONT12:25 pmOntario
Feb 11
ONT8:55 amOntario
8h 05m
2 stops
PIT8:00 pmPittsburgh
$344
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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 September 15, 2025.
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

Wed 11/5

10:32 pm-9:10 am

1 stop13h 38m

Ontario

Thu 11/13

12:05 pm-4:35 pm

1 stop25h 30m

$208

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 11/1

5:17 pm-8:17 am

1 stop18h 00m

Ontario

Mon 11/3

10:43 pm-4:09 pm

1 stop14h 26m

$210

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 10/24

5:40 pm-11:50 pm

1 stop9h 10m

Ontario

Mon 11/3

6:53 am-4:35 pm

1 stop6h 42m

$271

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 10/24

5:40 pm-11:50 pm

1 stop9h 10m

Ontario

Sun 10/26

6:53 am-4:38 pm

1 stop6h 45m

$291

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 12/3

8:15 am-4:01 pm

2 stops10h 46m

Ontario

Wed 12/10

10:47 am-10:04 pm

1 stop8h 17m

$322

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 12/3

8:15 am-4:01 pm

2 stops10h 46m

Ontario

Wed 12/10

9:59 am-12:04 am

2 stops11h 05m

$327

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sun 11/16

5:10 am-9:10 am

1 stop7h 00m

Ontario

Mon 11/24

2:15 pm-11:30 pm

1 stop6h 15m

$333

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

5:50 am-10:40 am

1 stop7h 50m

Ontario

Wed 2/11

6:30 am-4:20 pm

1 stop6h 50m

$334

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 2/2

4:15 pm-8:58 pm

1 stop7h 43m

Ontario

Wed 2/11

6:39 pm-9:30 am

2 stops11h 51m

$335

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 10/11

4:55 pm-9:24 pm

1 stop7h 29m

Ontario

Sat 10/18

6:00 am-3:49 pm

1 stop6h 49m

$410

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, April 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 $371. If you aren’t able to travel during the month of April, then book flights to Ontario from Pittsburgh during November instead. Flights to Ontario in November, while not as cheap as those in April, still average around $372.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $396. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Pittsburgh to Ontario for around $527.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from Pittsburgh to Ontario when you can find flight prices for as low as $404. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $458 on average. Flights to Ontario from Pittsburgh in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Pittsburgh to Ontario flight prices changed over time?

As of September 2025, prices for Pittsburgh to Ontario flights are approximately 72% more expensive when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from Pittsburgh to Ontario. There are no popular flight routes from Pittsburgh to Ontario.
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  • 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
American AirlinesPriceFrom $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $301Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
United AirlinesPriceFrom $321Free CancellationRating
7.4
8,931 reviews
Search United 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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