$84 Cheap Flights from Ontario (ONT) to Philadelphia (PHL)

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Cheap Flights from Ontario to Philadelphia (ONT-PHL)

Prices were available within the past 7 days and start at $84 for one-way flights and $168 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Jul 15 - Tue, Jul 23
ONT
Ontario
PHL
Philadelphia
$168 Roundtrip, just found
$168
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Jul 15 from Ontario to Philadelphia, returning Tue, Jul 23, priced at $168 just found
Frontier Airlines
Tue, Jun 25 - Mon, Jul 15
ONT
Ontario
PHL
Philadelphia
$178 Roundtrip, found 5 days ago
$178
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jun 25 from Ontario to Philadelphia, returning Mon, Jul 15, priced at $178 found 5 days ago
Frontier Airlines
Wed, Aug 7 - Tue, Aug 20
ONT
Ontario
PHL
Philadelphia
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Aug 7 from Ontario to Philadelphia, returning Tue, Aug 20, priced at $179 found 1 day ago
Frontier Airlines
Mon, Aug 19 - Tue, Aug 20
ONT
Ontario
PHL
Philadelphia
$185 Roundtrip, found 5 hours ago
$185
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Aug 19 from Ontario to Philadelphia, returning Tue, Aug 20, priced at $185 found 5 hours ago
Frontier Airlines
Mon, Jul 29 - Sun, Aug 11
ONT
Ontario
PHL
Philadelphia
$188 Roundtrip, found 3 hours ago
$188
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Mon, Jul 29 from Ontario to Philadelphia, returning Sun, Aug 11, priced at $188 found 3 hours ago
Frontier Airlines
Wed, Aug 7 - Thu, Aug 15
ONT
Ontario
PHL
Philadelphia
$190 Roundtrip, found 4 days ago
$190
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Aug 7 from Ontario to Philadelphia, returning Thu, Aug 15, priced at $190 found 4 days ago
Frontier Airlines
Tue, Jun 25 - Thu, Jul 4
ONT
Ontario
PHL
Philadelphia
$193 Roundtrip, found 5 days ago
$193
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jun 25 from Ontario to Philadelphia, returning Thu, Jul 4, priced at $193 found 5 days ago
Frontier Airlines
Tue, Aug 6 - Thu, Aug 15
ONT
Ontario
PHL
Philadelphia
$196 Roundtrip, found 4 days ago
$196
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Tue, Aug 6 from Ontario to Philadelphia, returning Thu, Aug 15, priced at $196 found 4 days ago
Frontier Airlines
Sun, Jul 14 - Tue, Jul 23
ONT
Ontario
PHL
Philadelphia
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Jul 14 from Ontario to Philadelphia, returning Tue, Jul 23, priced at $199 found 1 day ago
Frontier Airlines
Fri, Aug 30 - Sun, Sep 1
ONT
Ontario
PHL
Philadelphia
$201 Roundtrip, found 10 hours ago
$201
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Fri, Aug 30 from Ontario to Philadelphia, returning Sun, Sep 1, priced at $201 found 10 hours ago
Flights from Ontario (ONT) to Philadelphia (PHL)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, United
Roundtrip price
$168
Distance
2349 mi

Ontario to Philadelphia Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Ontario to Philadelphia offer the perfect respite. Not only does exploring Philadelphia provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Ontario to Philadelphia may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Philadelphia are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Philadelphia more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Philadelphia is $84 now!

Frequently asked questions

How much is a one-way flight from Ontario Airport to PHL?
You can nab one-way Ontario flights to Philadelphia starting from $84. This data is based on the lowest price located on Expedia for this journey with a departure date in the next three months and was updated on June 14 2024 and has not changed since. This fare is for an Frontier Airlines flight, leaving Los Angeles - Ontario Intl. Airport (ONT) on August 7 2024 and touching down at PHL.
How long does it take to fly from ONT to PHL?
Purchase a ticket with United Airlines and you can expect to be airborne for approximately 5 hours and 5 minutes. This sought-after airline has a direct flight that takes off at 9:00AM from ONT and reaches Philadelphia Airport at 5:05PM. Expedia has some great flight deals, so take a peek at what’s available on this route today.
Is it cheaper to buy a plane ticket from Ontario Airport to Philadelphia Intl. Airport (PHL) last minute?
Being a spontaneous soul is a fantastic way to discover the world, but it isn’t always the wisest way to score a bargain airfare. Consider booking your Los Angeles - Ontario Intl. Airport (ONT) to Philadelphia Intl. Airport (PHL) trip ahead of time instead of leaving it till the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave your spontaneity for when you get to Philadelphia Intl. Airport (PHL)!
What is the cheapest airline flying from Ontario Airport to Philadelphia Intl. Airport (PHL) in the next 90 days?
The cheapest airline traveling from Ontario to Philadelphia found on Expedia is Frontier Airlines, with fares starting at $84. This price is based on airfares found on Expedia with a departure date within the next 90 days. The flight leaves Los Angeles - Ontario Intl. Airport (ONT) on August 7 2024 and arrives at Philadelphia Intl. Airport (PHL). Pricing information was updated on June 14 2024 and has not changed since.
What's the cheapest price for a flight from Los Angeles - Ontario Intl. Airport (ONT) to Philadelphia Airport next month?
The cheapest ticket for a one-way flight from Ontario to Philadelphia within the next month is $84. If you’re planning to travel soon, lock in this fare before it’s gone. This price was found after looking at all available flights on Expedia with a departure date within the next 30 days. This airfare is for a one-way Frontier Airlines flight departing ONT on July 10 2024 and getting into PHL. The price was last updated on June 14 2024 and has not changed since.
What airports do you fly into for Philadelphia from Los Angeles?
From Los Angeles, you can get to Philadelphia via Philadelphia Intl. Airport (PHL), Atlantic City Intl. Airport (ACY) and Lehigh Valley Intl. Airport (ABE). It’s wise to check which terminal is the most convenient for you before making your decision. If you opt for Philadelphia Intl. Airport (PHL), it’s roughly 7 mi southwest of downtown. Use the dough you save when booking your fare with Expedia to visit the city’s awesome attractions, such as Liberty Bell Center and Independence Hall.
What are the most popular departure times for flights from Ontario Airport to Philadelphia Airport?
Between 9:00 AM - 10:00 AM is when you’ll find the largest number of United Airlines flights making their way from Los Angeles - Ontario Intl. Airport (ONT) to PHL. Our recommendation? Book a flight that departs earlier in the day. With air traffic yet to build up around airports, your chances of catching a delay-free flight are higher.
Can I change the date of my flight from Ontario Airport to PHL?
You can make changes to your Ontario Airport to Philadelphia Intl. Airport (PHL) flight through the Expedia Trips portal. But before you make any adjustments, review the conditions and rules in your itinerary to learn what the airline will allow you to do and if charges apply. Some airlines charge a change fee per person, on top of any difference in ticket prices. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also take a look at our Customer Service portal for more useful advice and to connect with our Virtual Agent.
Philadelphia nearby Airports

Atlantic City

Ontario to Atlantic City Intl.
$279.66
Ontario nearby Airports

Burbank

Hollywood Burbank to Philadelphia
$164.18

Los Angeles

Los Angeles Intl. to Philadelphia
$172.76

Orange County

John Wayne to Philadelphia
$178.97

Long Beach

Long Beach Municipal to Philadelphia
$295.96
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