Cheap flights from Philadelphia to Ontario from $64
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Ontario departing on 3/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
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.Find the cheapest flights from Philadelphia to Los Angeles
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cheap bus & train deals from Philadelphia to Los Angeles
All round-trip flight deals to Los Angeles
Frontier flights from Philadelphia to Ontario
Our best Frontier deals on Philadelphia to Ontario flight tickets
American Airlines flights from Philadelphia to Ontario
Our best American Airlines deals on Philadelphia to Ontario flight tickets
See travel insights to Los Angeles from
How to get the cheapest flight ticket from Philadelphia 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, April is the cheapest month to fly from Philadelphia to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $269. If you aren’t able to travel during the month of April, then book flights to Ontario from Philadelphia during September instead. Flights to Ontario in September, while not as cheap as those in April, still average around $274.
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 Philadelphia 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 Philadelphia 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 Philadelphia 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?
Most flyers found that booking tickets 26 days in advance of their planned departure date is the best time to get cheap flights to Ontario. During this timeframe, flight prices are around $361. However, in the past 72 hours, people saw flights from Philadelphia for as low as $193.
Can stopping save me money on Philadelphia to Ontario flights?
You could potentially save up to 36% on your flight if you consider stops on a Philadelphia to Ontario flight.
How have Philadelphia to Ontario flight prices changed over time?
As of January 2025, prices for Philadelphia to Ontario flights are approximately 22% more expensive when compared to flights at the same time last year.
When to book flights from Philadelphia to Ontario
Cheap Philadelphia to Ontario (PHL to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Ontario
How far is Philadelphia to Ontario by plane?
Ontario is 2355.5 mi away from Philadelphia. Flights usually cover this in 7h 31m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Philadelphia Airport to Ontario Airport?
Prices for flights from Philadelphia Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to Ontario Airport?
As of January 2025, there are 6 operators available to choose from for flights from Philadelphia Airport to Ontario Airport.
How old do you have to be to fly from Philadelphia Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Philadelphia to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Philadelphia to Ontario is American Airlines (62% of total bookings). The next most popular airlines are Frontier (19%), Delta (10%), and Spirit Airlines (4%).
Best airlines flying from Philadelphia to Ontario
Compare and see reviews for airlines that fly from Philadelphia to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $138 | Free Cancellation | Rating 6.1 3,454 reviews | |||
| PriceFrom $152 | Free Cancellation | Rating 6.3 8,104 reviews | |||
| PriceFrom $259 | Free Cancellation | Rating 8.0 8,537 reviews | |||
| PriceFrom $268 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $338 | Free Cancellation | Rating 8.1 4,694 reviews | |||
| PriceFrom $357 | Free Cancellation | Rating 7.4 8,973 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Philadelphia to Ontario?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Philadelphia to Ontario for you.
Can I find flights from Philadelphia to Ontario with flexible booking policies on momondo?
All flight searches from Philadelphia to Ontario on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Philadelphia to Ontario?
momondo provides multiple filters to help you find the best flight to Ontario from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Philadelphia 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 Philadelphia and alert you when they change.