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Cheap flights from Pennsylvania to Los Angeles from $110

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Los Angeles departing on 9/1. 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 Pennsylvania to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:40 pm - 11:50 pm
PHL
-
ONT
34h 10m
2 stops
Frontier Logo
10:17 pm - 6:30 am
ONT
-
PHL
29h 13m
1 stop
$229Frontier
Mon, Aug 17 - Mon, Aug 24
Frontier Logo
8:30 am - 10:04 am
PHL
-
ONT
28h 34m
2 stops
Frontier Logo
3:40 pm - 6:30 am
ONT
-
PHL
11h 50m
1 stop
$232Frontier
Sun, Aug 16 - Tue, Aug 18
Delta Logo
6:00 am - 12:22 pm
JFK
-
ONT
9h 22m
1 stop
Delta Logo
5:52 pm - 6:22 am
ONT
-
JFK
9h 30m
1 stop
$264Delta
Tue, Oct 20 - Wed, Oct 28
Delta Logo
6:00 am - 10:42 am
JFK
-
ONT
7h 42m
1 stop
Delta Logo
12:17 pm - 12:59 am
ONT
-
JFK
9h 42m
1 stop
$276Delta
Sat, Sep 5 - Sat, Sep 12
American Airlines Logo
8:39 am - 1:25 pm
LGA
-
ONT
7h 46m
1 stop
American Airlines Logo
8:25 am - 9:18 pm
ONT
-
LGA
9h 53m
1 stop
$276American Airlines
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
3:20 pm - 8:10 pm
LGA
-
ONT
7h 50m
1 stop
Southwest Logo
11:00 am - 9:55 pm
ONT
-
LGA
7h 55m
1 stop
$277Southwest
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
6:56 am - 11:43 am
JFK
-
ONT
7h 47m
1 stop
American Airlines Logo
1:04 pm - 11:58 pm
ONT
-
JFK
7h 54m
1 stop
$278American Airlines
Sat, Sep 5 - Fri, Sep 11
Southwest Logo
2:00 pm - 8:10 pm
LGA
-
ONT
9h 10m
1 stop
Southwest Logo
10:15 am - 9:45 pm
ONT
-
LGA
8h 30m
2 stops
$282Southwest
Sat, Sep 5 - Sat, Sep 12
JetBlue Logo
6:50 pm - 9:59 pm
JFK
-
ONT
6h 09mnonstop
JetBlue Logo
9:10 pm - 5:31 am
ONT
-
JFK
5h 21mnonstop
$296JetBlue
Sat, Sep 5 - Sat, Sep 12
JetBlue Logo
6:50 pm - 9:59 pm
JFK
-
ONT
6h 09mnonstop
JetBlue Logo
9:10 pm - 5:31 am
ONT
-
JFK
5h 21mnonstop
$307JetBlue
Sat, Sep 5 - Sat, Sep 12

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Frontier flights from Pennsylvania to Ontario

Our best Frontier deals on Pennsylvania to Ontario flight tickets
Frontier
Aug 17
PHL4:40 pmPhiladelphia
34h 10m
2 stops
ONT11:50 pmOntario
Aug 24
ONT10:17 pmOntario
29h 13m
1 stop
PHL6:30 amPhiladelphia
$229
Frontier
Aug 16
PHL8:30 amPhiladelphia
28h 34m
2 stops
ONT10:04 amOntario
Aug 18
ONT3:40 pmOntario
11h 50m
1 stop
PHL6:30 amPhiladelphia
$232
Frontier
Aug 26
PHL4:45 pmPhiladelphia
20h 19m
2 stops
ONT10:04 amOntario
Sep 2
ONT3:40 pmOntario
11h 50m
1 stop
PHL6:30 amPhiladelphia
$239

Delta flights from Pennsylvania to Ontario

Our best Delta deals on Pennsylvania to Ontario flight tickets
Delta
Oct 20
JFK6:00 amNew York John F Kennedy Intl
9h 22m
1 stop
ONT12:22 pmOntario
Oct 28
ONT5:52 pmOntario
9h 30m
1 stop
JFK6:22 amNew York John F Kennedy Intl
$264
Delta
Sep 5
JFK6:00 amNew York John F Kennedy Intl
7h 42m
1 stop
ONT10:42 amOntario
Sep 12
ONT12:17 pmOntario
9h 42m
1 stop
JFK12:59 amNew York John F Kennedy Intl
$276
Delta
Sep 5
JFK6:00 amNew York John F Kennedy Intl
7h 42m
1 stop
ONT10:42 amOntario
Sep 12
ONT12:17 pmOntario
9h 42m
1 stop
JFK12:59 amNew York John F Kennedy Intl
$277

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 22, 2026.
Use the filters below to find and compare flights from Pennsylvania to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Mon 8/17

4:40 pm-11:50 pm

2 stops34h 10m

Ontario

Mon 8/24

10:17 pm-6:30 am

1 stop29h 13m

$229

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Sun 8/16

8:30 am-10:04 am

2 stops28h 34m

Ontario

Tue 8/18

3:40 pm-6:30 am

1 stop11h 50m

$232

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 10/20

6:00 am-12:22 pm

1 stop9h 22m

Ontario

Wed 10/28

5:52 pm-6:22 am

1 stop9h 30m

$264

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 9/5

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sat 9/12

12:17 pm-12:59 am

1 stop9h 42m

$276

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 9/9

8:39 am-1:25 pm

1 stop7h 46m

Ontario

Sat 9/12

8:25 am-9:18 pm

1 stop9h 53m

$276

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

3:20 pm-8:10 pm

1 stop7h 50m

Ontario

Fri 9/11

11:00 am-9:55 pm

1 stop7h 55m

$277

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 9/5

6:56 am-11:43 am

1 stop7h 47m

Ontario

Fri 9/11

1:04 pm-11:58 pm

1 stop7h 54m

$278

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

2:00 pm-8:10 pm

1 stop9h 10m

Ontario

Sat 9/12

10:15 am-9:45 pm

2 stops8h 30m

$282
Quickest round-trip

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 9/5

6:50 pm-9:59 pm

Nonstop6h 09m

Ontario

Sat 9/12

9:10 pm-5:31 am

Nonstop5h 21m

$296

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 9/5

6:50 pm-9:59 pm

Nonstop6h 09m

Ontario

Sat 9/12

9:10 pm-5:31 am

Nonstop5h 21m

$307

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 Pennsylvania 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 Pennsylvania to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $345. If you aren’t able to travel during the month of September, then book flights to Ontario from Pennsylvania during February instead. Flights to Ontario in February, while not as cheap as those in September, still average around $366.

How far in advance should I book a flight from Pennsylvania to Ontario?

You are more likely to see cheaper flights to Ontario from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Pennsylvania for as low as $285 on momondo.

Can stopping save me money on Pennsylvania to Ontario flights?

You could potentially save up to 26% on your flight if you consider stops on a Pennsylvania to Ontario flight.

Cheap Pennsylvania to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pennsylvania to Ontario

Fastest flight time

5h 58m

Direct flights

Every day

Airports in Ontario

1 airport
The fastest flight from Pennsylvania to Ontario takes 5h 58m
Direct flights go from Pennsylvania to Ontario every day.
There is 1 airport in Ontario. From Pennsylvania there are direct flights to Ontario (ONT).
Search flight deals

Frequently asked questions about flying from Pennsylvania to Ontario

  • When did momondo last update prices for flights from Pennsylvania to Ontario Airport?

    Prices for flights from Pennsylvania to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Pennsylvania to Ontario Airport?

  • How old do you have to be to fly from Pennsylvania 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 Pennsylvania to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Pennsylvania to Ontario

Compare and see reviews for airlines that fly from Pennsylvania to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $215Free CancellationRating
5.6
2,771 reviews
Search Frontier flights
DeltaPriceFrom $256Free CancellationRating
7.8
8,476 reviews
Search Delta flights
United AirlinesPriceFrom $290Free CancellationRating
7.4
10,020 reviews
Search United Airlines flights
SouthwestPriceFrom $305Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
American AirlinesPriceFrom $305Free CancellationRating
7.1
11,834 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Pennsylvania to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Pennsylvania to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights from Pennsylvania to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario from Pennsylvania on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Pennsylvania to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Pennsylvania. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Pennsylvania to Ontario right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Pennsylvania and alert you when they change.

An easier way to manage your Ontario trip

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