Cheap flights from Philadelphia to Ontario (PHL - ONT)

PHL — ONT
May 29 — Jun 51

The best prices from Philadelphia to Ontario are usually found in August or September, booked 13 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

How to find the cheapest flight from Philadelphia to Ontario

All the information you need to plan the best PHL to ONT flight in 2022: compare Philadelphia to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

PHL - ONT

Price

$207 - $452

ONT

Temperature

53.6 - 78.8 °F

ONT

Rainfall

0.1 - 3.4 inches

Popular inDecemberHigh demand for flights, 31% potential price rise
Cheapest inAugustBest time to find cheap flights, 34% potential price drop
Average price$270Average for round-trip flights in May 2022
Round-trip from$207From Philadelphia to Ontario

What is the cheapest day to fly round-trip from Philadelphia to Ontario?

Flights from Philadelphia to Ontario are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.

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

Travelers have found it’s best to book a flight 20 days in advance to save up to 32% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 20 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Philadelphia to Ontario 1-2 weeks in advance for as low as $224, or $304 for flights within the next 24 hours.

What is the cheapest month to fly from Philadelphia to Ontario?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to Ontario. Flights to Ontario from Philadelphia in August are about $234 on average during August, but can be found for as low as $90.

When is the cheapest time to fly from Philadelphia to Ontario (PHL - ONT)?

It’s typically best to fly out from Philadelphia to Ontario in the evening. Doing so could potentially save you 56% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Philadelphia to Ontario in May, June 2022

The best prices found for PHL to ONT flights for May, June
May 28 - Jun 1
PHL

Philadelphia

ONT

Ontario

1 stop

16h 12m
ONT

Ontario

PHL

Philadelphia

1 stop

11h 51m
$355

Multiple Airlines

View Deal

Deal found 5/21/22

May 25 - Jun 1
PHL

Philadelphia

ONT

Ontario

2 stops

14h 19m
ONT

Ontario

PHL

Philadelphia

1 stop

13h 46m
$358

Frontier

View Deal

Deal found 5/23/22

May 29 - May 31
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
ONT

Ontario

PHL

Philadelphia

1 stop

18h 43m
$360

Frontier

View Deal

Deal found 5/21/22

Philadelphia to Ontario 2022 flight deals

Cheap flights to Ontario from Philadelphia found for this year
May 28 - Jun 1
PHL

Philadelphia

ONT

Ontario

1 stop

16h 12m
ONT

Ontario

PHL

Philadelphia

1 stop

11h 51m
$355

Multiple Airlines

View Deal

Deal found 5/21/22

May 25 - Jun 1
PHL

Philadelphia

ONT

Ontario

2 stops

14h 19m
ONT

Ontario

PHL

Philadelphia

1 stop

13h 46m
$358

Frontier

View Deal

Deal found 5/23/22

May 29 - May 31
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
ONT

Ontario

PHL

Philadelphia

1 stop

18h 43m
$360

Frontier

View Deal

Deal found 5/21/22

Cheap Frontier flights from Philadelphia to Ontario

May 29 - May 31
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
ONT

Ontario

PHL

Philadelphia

1 stop

18h 43m
$360

Frontier

View Deal

Deal found 5/21/22

Nov 2 - Nov 9
PHL

Philadelphia

ONT

Ontario

1 stop

15h 12m
ONT

Ontario

PHL

Philadelphia

1 stop

7h 26m
$382

Frontier

View Deal

Deal found 5/22/22

Nov 2 - Nov 9
PHL

Philadelphia

ONT

Ontario

2 stops

22h 33m
ONT

Ontario

PHL

Philadelphia

1 stop

7h 26m
$386

Frontier

View Deal

Deal found 5/22/22

Cheap American Airlines flights from Philadelphia to Ontario

Aug 20 - Aug 27
PHL

Philadelphia

ONT

Ontario

1 stop

8h 24m
ONT

Ontario

PHL

Philadelphia

1 stop

7h 59m
$451

American Airlines

View Deal

Deal found 5/23/22

Aug 24 - Aug 29
PHL

Philadelphia

ONT

Ontario

2 stops

9h 57m
ONT

Ontario

PHL

Philadelphia

1 stop

7h 59m
$457

American Airlines

View Deal

Deal found 5/23/22

Aug 27 - Sep 2
PHL

Philadelphia

ONT

Ontario

2 stops

9h 57m
ONT

Ontario

PHL

Philadelphia

1 stop

7h 55m
$458

American Airlines

View Deal

Deal found 5/22/22

Last minute flights from Philadelphia to Ontario

Late deals on return flights to Ontario from Philadelphia, departing today and this week
May 29 - May 31
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
ONT

Ontario

PHL

Philadelphia

1 stop

18h 43m
$360

Frontier

View Deal

Deal found 5/21/22

May 29 - Jun 1
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
ONT

Ontario

PHL

Philadelphia

1 stop

11h 51m
$361

Multiple Airlines

View Deal

Deal found 5/21/22

May 31 - Jun 1
PHL

Philadelphia

ONT

Ontario

1 stop

16h 03m
ONT

Ontario

PHL

Philadelphia

1 stop

11h 51m
$368

Multiple Airlines

View Deal

Deal found 5/21/22

One-way flights to Ontario from Philadelphia

The cheapest one-way flights from Philadelphia to Ontario
Jun 27
PHL

Philadelphia

ONT

Ontario

2 stops

37h 53m
$164

Frontier

View Deal

Deal found 5/21/22

Jun 5
PHL

Philadelphia

ONT

Ontario

1 stop

12h 13m
$185

Frontier

View Deal

Deal found 5/21/22

Aug 18
PHL

Philadelphia

ONT

Ontario

1 stop

8h 18m
$186

Delta

View Deal

Deal found 5/24/22

Related info for your journey

Useful info, stats and facts about Philadelphia to Ontario flights.

Which airlines flying from Philadelphia to Ontario have flexible cancellations due to COVID-19?

Some of our airline partners flying from Philadelphia to Ontario have new flexible policies in place due to COVID-19. American Airlines, Frontier, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Philadelphia to Ontario for under $400 on Cheapflights?

Yes, there are multiple flights from Philadelphia to Ontario for under $400. The cheapest flight booked recently is on Frontier for just $382, but on average you can expect to pay $421.

Are there last-minute flights available from Philadelphia to Ontario for under $400?

There are currently 20+ open flights from Philadelphia to Ontario within the next 7 days for less than $400.

How popular is this Philadelphia to Ontario flight route?

Within the past month, 29 users have taken a look at flights from Philadelphia to Ontario.

What are the cheapest airlines flying from Philadelphia to Ontario round-trip?

Our cheapest airline available from Philadelphia to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $382 on this airline. An additional option worth looking into is American Airlines, starting at $451.

What are the cheapest airlines to fly from Philadelphia to Ontario one-way?

One-way options have recently been found by users for as low as $164 on Frontier. Other airlines that offer cheap prices include Delta from $186 and American Airlines from $227 one-way.

What are the most popular airlines that fly from Philadelphia to Ontario?

Consider American Airlines, Alaska Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Philadelphia to Ontario.

What are the cheapest flights from Philadelphia to Ontario?

The cheapest flight price from Philadelphia to Ontario is $149. On average you can expect to pay $482. The most popular route, (Philadelphia - Ontario), can usually be booked for $379.

Alternative routes for Philadelphia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Philadelphia to Ontario

The chart below displays the airlines Cheapflights users traveling from Philadelphia to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
FrontierCheapest$98Average$217FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
United AirlinesCheapest$151Average$466FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
DeltaCheapest$206Average$485FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$308Average$508FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights