Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Pennsylvania to Los Angeles from $101

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 6/2. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Pennsylvania to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:12 am - 7:32 pm
IAD
-
ONT
13h 20m
1 stop
Frontier Logo
3:34 pm - 7:50 am
ONT
-
IAD
13h 16m
1 stop
$210Frontier
Tue, Jun 2 - Tue, Sep 1
Frontier Logo
9:12 am - 3:44 pm
IAD
-
ONT
9h 32m
1 stop
Frontier Logo
1:33 pm - 8:25 am
ONT
-
IAD
15h 52m
1 stop
$217Frontier
Tue, Jun 2 - Wed, Jun 10
American Airlines Logo
1:53 pm - 9:11 pm
PHL
-
ONT
10h 18m
1 stop
American Airlines Logo
10:10 pm - 11:17 am
ONT
-
PHL
10h 07m
1 stop
$277American Airlines
Tue, Aug 18 - Sat, Aug 22
Southwest Logo
6:55 am - 1:10 pm
LGA
-
ONT
9h 15m
1 stop
Southwest Logo
12:50 pm - 10:55 pm
ONT
-
LGA
7h 05m
1 stop
$298Southwest
Fri, May 29 - Fri, Jun 5
Delta Logo
11:00 am - 6:01 pm
JFK
-
ONT
10h 01m
1 stop
Delta Logo
5:05 pm - 6:17 am
ONT
-
JFK
10h 12m
1 stop
$298Delta
Thu, Sep 3 - Fri, Sep 11
American Airlines Logo
2:31 pm - 10:36 pm
LGA
-
ONT
11h 05m
1 stop
American Airlines Logo
7:00 am - 8:25 pm
ONT
-
LGA
10h 25m
1 stop
$299American Airlines
Sat, May 30 - Sat, Jun 6
JetBlue Logo
7:30 pm - 10:35 pm
JFK
-
ONT
6h 05mnonstop
JetBlue Logo
11:50 pm - 8:11 am
ONT
-
JFK
5h 21mnonstop
$302JetBlue
Fri, Aug 21 - Mon, Aug 24
Southwest Logo
1:25 pm - 10:35 pm
LGA
-
ONT
12h 10m
1 stop
Southwest Logo
1:20 pm - 11:05 pm
ONT
-
LGA
6h 45m
1 stop
$303Southwest
Wed, Jul 8 - Tue, Jul 21
JetBlue Logo
7:30 pm - 10:35 pm
JFK
-
ONT
6h 05mnonstop
JetBlue Logo
11:50 pm - 8:11 am
ONT
-
JFK
5h 21mnonstop
$303JetBlue
Wed, Jul 29 - Fri, Aug 14
Delta Logo
5:00 pm - 11:48 pm
LGA
-
ONT
9h 48m
2 stops
Delta Logo
11:48 am - 11:24 pm
ONT
-
LGA
8h 36m
1 stop
$304Delta
Thu, Jul 9 - Fri, Jul 24

Frontier flights from Pennsylvania to Ontario

Our best Frontier deals on Pennsylvania to Ontario flight tickets
Frontier
Sep 1
DCA6:00 pmWashington, D.C. Reagan-National
8h 49m
1 stop
ONT11:49 pmOntario
Sep 2
ONT10:50 amOntario
8h 09m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$210
Frontier
Jun 2
IAD9:12 amWashington, D.C. Dulles Intl
9h 32m
1 stop
ONT3:44 pmOntario
Jun 10
ONT1:33 pmOntario
15h 52m
1 stop
IAD8:25 amWashington, D.C. Dulles Intl
$217
Frontier
May 26
IAD9:12 amWashington, D.C. Dulles Intl
25h 52m
1 stop
ONT8:04 amOntario
Jun 2
ONT1:39 pmOntario
15h 33m
1 stop
IAD8:12 amWashington, D.C. Dulles Intl
$220

Delta flights from Pennsylvania to Ontario

Our best Delta deals on Pennsylvania to Ontario flight tickets
Delta
Sep 3
JFK6:00 amNew York John F Kennedy Intl
8h 04m
1 stop
ONT11:04 amOntario
Sep 11
ONT5:05 pmOntario
10h 12m
1 stop
JFK6:17 amNew York John F Kennedy Intl
$298
Delta
Jul 9
LGA5:00 pmNew York LaGuardia
9h 48m
2 stops
ONT11:48 pmOntario
Jul 24
ONT11:48 amOntario
8h 36m
1 stop
LGA11:24 pmNew York LaGuardia
$304
Delta
Jul 10
PHL4:08 pmPhiladelphia
8h 42m
1 stop
ONT9:50 pmOntario
Jul 18
ONT12:00 pmOntario
9h 57m
1 stop
PHL12:57 amPhiladelphia
$306

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 May 13, 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

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 6/2

9:12 am-7:32 pm

1 stop13h 20m

Ontario

Tue 9/1

3:34 pm-7:50 am

1 stop13h 16m

$210

Washington, D.C.Ontario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 6/2

9:12 am-3:44 pm

1 stop9h 32m

Ontario

Wed 6/10

1:33 pm-8:25 am

1 stop15h 52m

$217

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Tue 8/18

1:53 pm-9:11 pm

1 stop10h 18m

Ontario

Sat 8/22

10:10 pm-11:17 am

1 stop10h 07m

$277

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 5/29

6:55 am-1:10 pm

1 stop9h 15m

Ontario

Fri 6/5

12:50 pm-10:55 pm

1 stop7h 05m

$298

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 9/3

11:00 am-6:01 pm

1 stop10h 01m

Ontario

Fri 9/11

5:05 pm-6:17 am

1 stop10h 12m

$298

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 5/30

2:31 pm-10:36 pm

1 stop11h 05m

Ontario

Sat 6/6

7:00 am-8:25 pm

1 stop10h 25m

$299
Quickest round-trip

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 8/21

7:30 pm-10:35 pm

Nonstop6h 05m

Ontario

Mon 8/24

11:50 pm-8:11 am

Nonstop5h 21m

$302

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 7/8

1:25 pm-10:35 pm

1 stop12h 10m

Ontario

Tue 7/21

1:20 pm-11:05 pm

1 stop6h 45m

$303

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 7/29

7:30 pm-10:35 pm

Nonstop6h 05m

Ontario

Fri 8/14

11:50 pm-8:11 am

Nonstop5h 21m

$303

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 7/9

5:00 pm-11:48 pm

2 stops9h 48m

Ontario

Fri 7/24

11:48 am-11:24 pm

1 stop8h 36m

$304

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Los Angeles from

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, May 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 $80. If you aren’t able to travel during the month of May, then book flights to Ontario from Pennsylvania during August instead. Flights to Ontario in August, while not as cheap as those in May, still average around $92.

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 $416 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 $324 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 $155Free CancellationRating
5.6
2,952 reviews
Search Frontier flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,450 reviews
Search Delta flights
United AirlinesPriceFrom $290Free CancellationRating
7.4
9,706 reviews
Search United Airlines flights
SouthwestPriceFrom $350Free CancellationRating
7.9
4,296 reviews
Search Southwest 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 6/12
Fri 6/19
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States