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Cheap flights from Pittsburgh to Los Angeles from $132

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 12/15. 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

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Frontier Logo
7:59 pm - 11:24 pm
PIT
-
ONT
30h 25m1 stop
Frontier Logo
6:20 am - 7:04 pm
ONT
-
PIT
9h 44m1 stop
$201Frontier
Fri, Jan 30 - Fri, Feb 6
Frontier Logo
5:07 pm - 11:59 pm
PIT
-
ONT
9h 52m1 stop
Frontier Logo
6:45 am - 4:12 pm
ONT
-
PIT
6h 27m1 stop
$234Frontier
Mon, Dec 22 - Fri, Dec 26
Alaska Airlines Logo
7:00 am - 8:36 pm
PIT
-
ONT
16h 36m1 stop
Alaska Airlines Logo
11:53 am - 6:46 pm
ONT
-
PIT
27h 53m1 stop
$274Alaska Airlines
Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
7:00 am - 3:08 pm
PIT
-
ONT
11h 08m1 stop
Alaska Airlines Logo
6:00 am - 6:46 pm
ONT
-
PIT
9h 46m1 stop
$280Alaska Airlines
Wed, Jan 14 - Sun, Jan 18
Alaska Airlines Logo
7:00 am - 10:59 am
PIT
-
ONT
30h 59m1 stop
Alaska Airlines Logo
4:03 pm - 6:46 pm
ONT
-
PIT
23h 43m1 stop
$284Alaska Airlines
Wed, Jan 7 - Tue, Jan 13
Alaska Airlines Logo
7:00 am - 10:59 am
PIT
-
ONT
30h 59m1 stop
Alaska Airlines Logo
11:53 am - 6:46 pm
ONT
-
PIT
27h 53m1 stop
$294Alaska Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
4:15 pm - 8:58 pm
PIT
-
ONT
7h 43m1 stop
United Airlines Logo
1:45 pm - 10:57 pm
ONT
-
PIT
6h 12m1 stop
$296United Airlines
Tue, Feb 10 - Tue, Feb 17
American Airlines Logo
6:54 am - 12:03 pm
PIT
-
ONT
8h 09m1 stop
American Airlines Logo
12:57 pm - 10:37 pm
ONT
-
PIT
6h 40m1 stop
$301American Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
4:15 pm - 8:58 pm
PIT
-
ONT
7h 43m1 stop
United Airlines Logo
1:24 pm - 10:56 pm
ONT
-
PIT
6h 32m1 stop
$304United Airlines
Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
7:00 am - 3:08 pm
PIT
-
ONT
11h 08m1 stop
Alaska Airlines Logo
6:14 am - 6:35 pm
ONT
-
PIT
9h 21m1 stop
$305Alaska Airlines
Fri, Feb 6 - Fri, Feb 27

Frontier flights from Pittsburgh to Ontario

Our best Frontier deals on Pittsburgh to Ontario flight tickets
Frontier
Dec 22
PIT5:07 pmPittsburgh
9h 52m
1 stop
ONT11:59 pmOntario
Dec 26
ONT6:45 amOntario
6h 27m
1 stop
PIT4:12 pmPittsburgh
$278
Find similar
Frontier
Dec 19
PIT5:07 pmPittsburgh
9h 52m
1 stop
ONT11:59 pmOntario
Dec 22
ONT6:45 amOntario
6h 27m
1 stop
PIT4:12 pmPittsburgh
$433
Find similar
Frontier
Dec 19
PIT5:07 pmPittsburgh
9h 52m
1 stop
ONT11:59 pmOntario
Jan 2
ONT6:45 amOntario
6h 27m
1 stop
PIT4:12 pmPittsburgh
$522
Find similar

American Airlines flights from Pittsburgh to Ontario

Our best American Airlines deals on Pittsburgh to Ontario flight tickets
American Airlines
Dec 23
PIT8:15 amPittsburgh
10h 35m
2 stops
ONT3:50 pmOntario
Dec 30
ONT11:59 pmOntario
7h 51m
1 stop
PIT10:50 amPittsburgh
$479
Find similar
American Airlines
Apr 18
PIT7:53 amPittsburgh
9h 56m
1 stop
ONT2:49 pmOntario
Apr 26
ONT11:59 pmOntario
7h 44m
1 stop
PIT10:43 amPittsburgh
$488
Find similar
American Airlines
Dec 19
PIT8:35 amPittsburgh
10h 15m
2 stops
ONT3:50 pmOntario
Dec 21
ONT2:42 pmOntario
6h 53m
1 stop
PIT12:35 amPittsburgh
$570
Find similar

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 December 7, 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

Fri 1/30

7:59 pm-11:24 pm

1 stop30h 25m

Ontario

Fri 2/6

6:20 am-7:04 pm

1 stop9h 44m

$201

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Mon 12/22

5:07 pm-11:59 pm

1 stop9h 52m

Ontario

Fri 12/26

6:45 am-4:12 pm

1 stop6h 27m

$234

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 1/14

7:00 am-8:36 pm

1 stop16h 36m

Ontario

Sat 1/17

11:53 am-6:46 pm

1 stop27h 53m

$274

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 1/14

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Sun 1/18

6:00 am-6:46 pm

1 stop9h 46m

$280

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 1/7

7:00 am-10:59 am

1 stop30h 59m

Ontario

Tue 1/13

4:03 pm-6:46 pm

1 stop23h 43m

$284

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 2/4

7:00 am-10:59 am

1 stop30h 59m

Ontario

Sat 2/7

11:53 am-6:46 pm

1 stop27h 53m

$294

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Tue 2/10

4:15 pm-8:58 pm

1 stop7h 43m

Ontario

Tue 2/17

1:45 pm-10:57 pm

1 stop6h 12m

$296

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Sat 1/10

6:54 am-12:03 pm

1 stop8h 09m

Ontario

Sat 1/17

12:57 pm-10:37 pm

1 stop6h 40m

$301

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Wed 1/14

4:15 pm-8:58 pm

1 stop7h 43m

Ontario

Sat 1/17

1:24 pm-10:56 pm

1 stop6h 32m

$304

PittsburghOntario

PIT - ONT

PITONT

Pittsburgh

Fri 2/6

7:00 am-3:08 pm

1 stop11h 08m

Ontario

Fri 2/27

6:14 am-6:35 pm

1 stop9h 21m

$305

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 $382. If you aren’t able to travel during the month of April, then book flights to Ontario from Pittsburgh during July instead. Flights to Ontario in July, while not as cheap as those in April, still average around $402.

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?

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 20m

Direct flights

None
The fastest flight from Pittsburgh to Ontario takes 7h 20m
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 16m.

  • 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
9,076 reviews
Search United Airlines flights
SouthwestPriceFrom $303Free CancellationRating
8.0
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights

  • Southwest Flights From Pittsburgh to Ontario

    Southwest flies from Pittsburgh to Ontario around 2 times per week, with 4,252 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Pittsburgh to Ontario in the last 72 hours was $303 (round-trip), much lower than the average airfare cost of $416 for Southwest flights on this route.

  • United Airlines Flights From Pittsburgh to Ontario

    Another popular option for Pittsburgh to Ontario flights is United Airlines (7.4/10, 9,076 ratings). United Airlines flies from Pittsburgh to Ontario around 7 times per week, with deals starting from $296 round-trip and rising to an average price of around $476.

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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