Flights Philadelphia → Ontario
As of October 2026, economy flights from Philadelphia to Ontario have a typical range USD 379–1576, median USD 739. Full range across all 106 offers: USD 207–2947. We analyzed 106 offers from 8 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Philadelphia → Ontario
Based on 106 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Philadelphia → Ontario
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier Airlines | — | — | — |
| Southwest | — | USD 45 | — |
| Southwest Airlines | Included | Included | — |
| Alaska Airlines | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| Delta | Included | USD 35 | — |
| United | Included | USD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Philadelphia to Ontario cost?
Based on 106 offers · October 2026
Philadelphia to Ontario flights ranged from USD 207 to USD 2947 across 106 offers analyzed in October 2026. The chart below shows how prices distributed across all 106 offers.
These 106 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 481 and USD 1145
What hidden fees do Philadelphia to Ontario flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Philadelphia to Ontario routes. The breakdown below is based on 106 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 10 | 3% |
| Southwest | 45 | 12% |
| WN | 0 | 0% |
| AS | 45 | 6% |
| AA | 45 | 5% |
| DL | 45 | 3% |
| UA | 45 | 5% |
Southwest: base ~USD 334 + fees USD 45 = ~USD 379 total. Alaska Airlines: base ~USD 653 + fees USD 45 = ~USD 698 total.
Total costs diverge further when fees are added on this route. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Southwest charges 4.5x more in ancillary fees than F9 on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Philadelphia to Ontario?
8 airlines flew Philadelphia to Ontario in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier | 2 | — | 207 | n/a |
 Frontier Airlines | 3 | 249–453 | 265 | 10 (4%) |
 Southwest | 21 | 379–385 | 379 | 45 (12%) |
 Southwest Airlines | 6 | 479–517 | 482 | 0 (0%) |
 Alaska Airlines | 7 | 557–928 | 698 | 45 (6%) |
 United Airlines | 17 | 677–1146 | 763 | 45 (6%) |
 American Airlines | 23 | 555–1156 | 969 | 45 (5%) |
 Delta Air Lines | 27 | 693–2445 | 1532 | 45 (3%) |
Where do the best Philadelphia → Ontario prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from travel agency sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Philadelphia to Ontario flights
- Full-service carriers on Philadelphia–Ontario cost 3.0x more than budget airlines (USD 990 vs USD 333 median; overall median USD 739).
- Southwest charges 4.5x more in ancillary fees than F9 — USD 45 vs USD 10 avg per booking.
- The same route priced USD 590 apart depending on where it was booked — the lowest median was USD 379. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Philadelphia to Ontario cost?
- Based on 106 offers analyzed, Philadelphia to Ontario flights range from USD 207 to USD 2947, with a median price of USD 739. Search for your specific dates →
- What hidden fees should I expect on Philadelphia to Ontario flights?
- On average, ancillary fees (bags, seat selection) add USD 41 to the base fare on Philadelphia to Ontario flights. See itemized fees for your itinerary →
- Which airline is cheapest on Philadelphia to Ontario including all fees?
- Frontier has the lowest median fare on Philadelphia to Ontario at USD 207 (median across 2 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Philadelphia–Ontario flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 379. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Philadelphia to Ontario routes?
- Philadelphia to Ontario has 8 airlines competing, creating a price range from USD 207 to USD 2947 across 106 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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