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Cheap flights from Pennsylvania to Los Angeles from $102

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 8/27. 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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Find the cheapest flights from Pennsylvania to Los Angeles

Cheap round-trip flights

Southwest Logo
5:55 pm - 12:05 amLGA-ONT
9h 10m1 stop
Southwest Logo
9:15 pm - 9:00 amONT-LGA
8h 45m2 stops
$212Southwest
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Thu, Nov 6 - Mon, Nov 10
Logo
9:00 am - 4:18 pmPHL-ONT
10h 18m1 stop
Logo
9:16 am - 6:05 amONT-PHL
17h 49m1 stop
$218
Find Deal
Wed, Sep 3 - Thu, Sep 11
JetBlue Logo
6:50 pm - 9:59 pmJFK-ONT
6h 09mnonstop
JetBlue Logo
10:56 pm - 7:18 amONT-JFK
5h 22mnonstop
$252JetBlue
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Sun, Aug 31 - Sat, Sep 6
JetBlue Logo
6:50 pm - 9:59 pmJFK-ONT
6h 09mnonstop
JetBlue Logo
10:56 pm - 7:18 amONT-JFK
5h 22mnonstop
$253JetBlue
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Sat, Aug 30 - Sat, Sep 6
Frontier Logo
6:00 pm - 11:50 pmDCA-ONT
8h 50m1 stop
Frontier Logo
12:59 am - 12:11 pmONT-DCA
8h 12m1 stop
$255Frontier
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Sat, Oct 11 - Fri, Oct 17
Alaska Airlines Logo
5:48 pm - 11:54 pmEWR-ONT
9h 06m1 stop
Alaska Airlines Logo
3:06 pm - 5:59 amONT-EWR
11h 53m1 stop
$256Alaska Airlines
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Mon, Sep 15 - Mon, Sep 22
Alaska Airlines Logo
5:48 pm - 11:54 pmEWR-ONT
9h 06m1 stop
Alaska Airlines Logo
3:06 pm - 5:59 amONT-EWR
11h 53m1 stop
$257Alaska Airlines
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Mon, Sep 15 - Mon, Sep 22
Frontier Logo
6:59 am - 4:18 pmJFK-ONT
12h 19m1 stop
Frontier Logo
8:00 am - 5:30 amONT-JFK
18h 30m1 stop
$258Frontier
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Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
3:45 pm - 9:25 pmLGA-ONT
8h 40m1 stop
United Airlines Logo
6:04 am - 4:50 pmONT-LGA
7h 46m1 stop
$267United Airlines
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Thu, Sep 11 - Wed, Sep 17
United Airlines Logo
11:25 am - 5:37 pmEWR-ONT
9h 12m1 stop
United Airlines Logo
6:38 pm - 5:35 amONT-EWR
7h 57m1 stop
$276United Airlines
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Wed, Sep 17 - Sun, Sep 21

Southwest flights from Pennsylvania to Ontario

Our best Southwest deals on Pennsylvania to Ontario flight tickets
Southwest
Nov 6
LGA5:55 pmNew York LaGuardia
9h 10m
1 stop
ONT12:05 amOntario
Nov 10
ONT9:15 pmOntario
8h 45m
2 stops
LGA9:00 amNew York LaGuardia
$212
Find similar
Southwest
Nov 6
LGA5:55 pmNew York LaGuardia
9h 10m
1 stop
ONT12:05 amOntario
Nov 10
ONT6:50 amOntario
6h 35m
1 stop
LGA4:25 pmNew York LaGuardia
$224
Find similar
Southwest
Oct 16
LGA6:25 amNew York LaGuardia
12h 10m
1 stop
ONT3:35 pmOntario
Oct 20
ONT6:35 amOntario
8h 35m
1 stop
LGA6:10 pmNew York LaGuardia
$229
Find similar

United Airlines flights from Pennsylvania to Ontario

Our best United Airlines deals on Pennsylvania to Ontario flight tickets
United Airlines
Sep 11
LGA3:45 pmNew York LaGuardia
8h 40m
1 stop
ONT9:25 pmOntario
Sep 17
ONT6:04 amOntario
7h 46m
1 stop
LGA4:50 pmNew York LaGuardia
$267
Find similar
United Airlines
Sep 17
EWR11:25 amNewark
9h 12m
1 stop
ONT5:37 pmOntario
Sep 21
ONT6:38 pmOntario
7h 57m
1 stop
EWR5:35 amNewark
$276
Find similar
United Airlines
Aug 13
EWR4:55 pmNewark
8h 57m
1 stop
ONT10:52 pmOntario
Aug 14
ONT6:00 amOntario
8h 01m
1 stop
EWR5:01 pmNewark
$342
Find similar

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 August 4, 2025.
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

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 11/6

5:55 pm-12:05 am

1 stop9h 10m

Ontario

Mon 11/10

9:15 pm-9:00 am

2 stops8h 45m

$212

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Wed 9/3

9:00 am-4:18 pm

1 stop10h 18m

Ontario

Thu 9/11

9:16 am-6:05 am

1 stop17h 49m

$218

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sun 8/31

6:50 pm-9:59 pm

Nonstop6h 09m

Ontario

Sat 9/6

10:56 pm-7:18 am

Nonstop5h 22m

$252

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 8/30

6:50 pm-9:59 pm

Nonstop6h 09m

Ontario

Sat 9/6

10:56 pm-7:18 am

Nonstop5h 22m

$253

Washington, D.C.Ontario

DCA - ONT

DCAONT

Washington, D.C. Reagan-National

Sat 10/11

6:00 pm-11:50 pm

1 stop8h 50m

Ontario

Fri 10/17

12:59 am-12:11 pm

1 stop8h 12m

$255

NewarkOntario

EWR - ONT

EWRONT

Newark

Mon 9/15

5:48 pm-11:54 pm

1 stop9h 06m

Ontario

Mon 9/22

3:06 pm-5:59 am

1 stop11h 53m

$256

NewarkOntario

EWR - ONT

EWRONT

Newark

Mon 9/15

5:48 pm-11:54 pm

1 stop9h 06m

Ontario

Mon 9/22

3:06 pm-5:59 am

1 stop11h 53m

$257

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 8/27

6:59 am-4:18 pm

1 stop12h 19m

Ontario

Wed 9/3

8:00 am-5:30 am

1 stop18h 30m

$258

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 9/11

3:45 pm-9:25 pm

1 stop8h 40m

Ontario

Wed 9/17

6:04 am-4:50 pm

1 stop7h 46m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 9/17

11:25 am-5:37 pm

1 stop9h 12m

Ontario

Sun 9/21

6:38 pm-5:35 am

1 stop7h 57m

$276

Flights are sorted by cheapest round-trip flights 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 $274. If you aren’t able to travel during the month of September, then book flights to Ontario from Pennsylvania during March instead. Flights to Ontario in March, while not as cheap as those in September, still average around $342.

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 Monday when prices can be found for as low as $330. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Pennsylvania to Ontario for around $416.

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

In the evening is the cheapest time of day to fly from Pennsylvania to Ontario when you can find flight prices for as low as $293. Flying to Ontario in the evening 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 $386 on average. Flights to Ontario from Pennsylvania in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $389 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 $305 on momondo.

Can stopping save me money on Pennsylvania to Ontario flights?

You could potentially save up to 66% 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

Best Price Found

$102

Fastest flight time

5h 54m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Pennsylvania in the past 72 hours is $102. The best round-trip flight deal from Pennsylvania to Ontario found on momondo in the last 72 hours is $212.
The fastest flight from Pennsylvania to Ontario takes 5h 54m
Direct flights go from Pennsylvania to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

  • 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 $130Free CancellationRating
5.8
3,232 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $166Free CancellationRating
6.3
8,053 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $296Free CancellationRating
8.0
7,987 reviews
Search Delta flights
SouthwestPriceFrom $301Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $305Free CancellationRating
7.4
8,912 reviews
Search United 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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