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Cheap flight deals from Philadelphia to Ontario Starting at PHP 2,577

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip
      • PHL06:45 am
        20h 14m
        1 stop
        ONT11:59 pm
        Tue, Mar 18|Philadelphia - Ontario|Frontier Airlines
        PHP 2,577PHP 4,769
        46% OFF
        46% OFF
        PHP 4,769PHP 2,577

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Mar 18, arriving at Ontario International Airport. One-way Prices start from PHP 2,577 including taxes and charges.

      • PHL06:49 am
        20h 15m
        1 stop
        ONT12:04 am
        Tue, Mar 11|Philadelphia - Ontario|Frontier Airlines
        PHP 2,649PHP 4,769
        44% OFF
        44% OFF
        PHP 4,769PHP 2,649

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Mar 11, arriving at Ontario International Airport. One-way Prices start from PHP 2,649 including taxes and charges.

      • PHL08:31 am
        12h 25m
        1 stop
        ONT05:56 pm
        Tue, Apr 1|Philadelphia - Ontario|Frontier Airlines
        PHP 2,649PHP 4,769
        44% OFF
        44% OFF
        PHP 4,769PHP 2,649

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Apr 1, arriving at Ontario International Airport. One-way Prices start from PHP 2,649 including taxes and charges.

      • PHL04:29 pm
        28h 29m
        1 stop
        ONT05:58 pm
        Tue, Mar 4|Philadelphia - Ontario|Frontier Airlines
        PHP 2,921
        PHP 2,921

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Mar 4, arriving at Ontario International Airport. One-way Prices start from PHP 2,921 including taxes and charges.

      • PHL08:28 am
        12h 28m
        1 stop
        ONT05:56 pm
        Tue, Apr 8|Philadelphia - Ontario|Frontier Airlines
        PHP 2,945
        PHP 2,945

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Apr 8, arriving at Ontario International Airport. One-way Prices start from PHP 2,945 including taxes and charges.

      • PHL04:29 pm
        28h 29m
        1 stop
        ONT05:58 pm
        Tue, Feb 25|Philadelphia - Ontario|Frontier Airlines
        PHP 3,057
        PHP 3,057

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Tue, Feb 25, arriving at Ontario International Airport. One-way Prices start from PHP 3,057 including taxes and charges.

      • PHL04:10 pm
        24h 27m
        1 stop
        ONT01:37 pm
        Mon, Apr 28|Philadelphia - Ontario|Frontier Airlines
        PHP 3,105
        PHP 3,105

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Mon, Apr 28, arriving at Ontario International Airport. One-way Prices start from PHP 3,105 including taxes and charges.

      • PHL07:45 am
        10h 34m
        1 stop
        ONT03:19 pm
        Wed, Mar 5|Philadelphia - Ontario|Frontier Airlines
        PHP 3,161
        PHP 3,161

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Wed, Mar 5, arriving at Ontario International Airport. One-way Prices start from PHP 3,161 including taxes and charges.

      • PHL08:00 am
        10h 4m
        1 stop
        ONT03:04 pm
        Mon, Mar 10|Philadelphia - Ontario|Frontier Airlines
        PHP 3,257
        PHP 3,257

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Mon, Mar 10, arriving at Ontario International Airport. One-way Prices start from PHP 3,257 including taxes and charges.

      • PHL07:45 am
        10h 34m
        1 stop
        ONT03:19 pm
        Wed, Feb 26|Philadelphia - Ontario|Frontier Airlines
        PHP 3,409
        PHP 3,409

        Choose Frontier Airlines flights from Philadelphia to Ontario. The one-way connecting flight with Frontier Airlines departs from Philadelphia International Airport on Wed, Feb 26, arriving at Ontario International Airport. One-way Prices start from PHP 3,409 including taxes and charges.

      • PHL01:00 pm
        3h 5m
        Nonstop
        ONT02:00 pm
        Fri, Feb 28|Philadelphia - Ontario|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Philadelphia to Los Angeles Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. F92593

    Frontier Airlines

    01:10 pm

    TTN

    2.9h

    04:04 pm

    MCO

    SMTWTFS
    Search

  2. F91733

    Frontier Airlines

    05:35 pm

    MCO

    4.3h

    07:56 pm

    DEN

    SMTWTFS

  3. F91499

    Frontier Airlines

    10:37 pm

    DEN

    2.4h

    11:59 pm

    ONT

    SMTWTFS

  4. F93339

    Frontier Airlines

    06:10 am

    PHL

    4.2h

    08:24 am

    DEN

    SMTW-F-
    Search

  5. F91261

    Frontier Airlines

    10:00 am

    DEN

    2.4h

    11:26 am

    ONT

    S--WT-S

  6. F93265

    Frontier Airlines

    06:42 pm

    PHL

    4.5h

    09:09 pm

    DEN

    SMTW--S
    Search

  7. F91499

    Frontier Airlines

    10:37 pm

    DEN

    2.4h

    11:59 pm

    ONT

    SMTWTFS

  8. F93265

    Frontier Airlines

    06:42 pm

    PHL

    4.5h

    09:09 pm

    DEN

    SMTW--S
    Search

  9. F92907

    Frontier Airlines

    09:30 am

    DEN

    2.5h

    11:00 am

    ONT

    S------

  10. F93265

    Frontier Airlines

    06:42 pm

    PHL

    4.5h

    09:09 pm

    DEN

    SMTW--S
    Search

  11. F91261

    Frontier Airlines

    10:00 am

    DEN

    2.4h

    11:26 am

    ONT

    S--WT-S

  12. F91601

    Frontier Airlines

    06:54 pm

    PHL

    5.4h

    09:20 pm

    LAS

    SMTWTFS
    Search

  13. F94757

    Frontier Airlines

    06:20 am

    LAS

    1.1h

    07:26 am

    ONT

    SMT-T--

  14. F91601

    Frontier Airlines

    06:54 pm

    PHL

    5.4h

    09:20 pm

    LAS

    SMTWTFS
    Search

  15. F91283

    Frontier Airlines

    08:49 am

    LAS

    1.1h

    09:54 am

    ONT

    ---WT-S

  16. F91601

    Frontier Airlines

    06:54 pm

    PHL

    5.4h

    09:20 pm

    LAS

    SMTWTFS
    Search

  17. F91357

    Frontier Airlines

    10:10 am

    LAS

    1.1h

    11:17 am

    ONT

    SMTW-FS

  18. F91601

    Frontier Airlines

    06:54 pm

    PHL

    5.4h

    09:20 pm

    LAS

    SMTWTFS
    Search

  19. F92231

    Frontier Airlines

    06:32 pm

    LAS

    1.1h

    07:39 pm

    ONT

    SMT-TF-

  20. F92059

    Frontier Airlines

    07:50 am

    PHL

    1.5h

    09:22 am

    RDU

    SM-WT-S
    Search

  21. F92225

    Frontier Airlines

    05:28 pm

    RDU

    4.1h

    07:32 pm

    DEN

    SM-W-FS

  22. F91499

    Frontier Airlines

    10:37 pm

    DEN

    2.4h

    11:59 pm

    ONT

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from Philadelphia to Ontario?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Philadelphia (PHL) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Philadelphia to Ontario based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Philadelphia (PHL) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around PHP 18,015.

How to find a cheap flight from Philadelphia to Ontario

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Philadelphia to Ontario. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | Philadelphia to Ontario

Cheapest nonstop flight pricePHP 2,577
Cheapest round-trip ticket pricePHP 17,358
Off-season for travelFebruary
Peak season for travelMay
Flight distance8,753.39 km
Popular airlineFrontier Airlines

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