Flights Ontario → Philadelphia
As of October 2026, economy flights from Ontario to Philadelphia have a typical range USD 427–1975, median USD 972. Full range across all 80 offers: USD 365–3107. We analyzed 80 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: Ontario → Philadelphia
Based on 80 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Ontario → Philadelphia
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Southwest | — | USD 45 | — |
| Frontier Airlines | USD 190 | USD 188 | — |
| American Airlines | Included | USD 35 | — |
| American | — | USD 55 | — |
| Delta | Included | USD 35 | — |
| Alaska Airlines | 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 Ontario to Philadelphia cost?
Based on 80 offers · October 2026
Ontario to Philadelphia flights ranged from USD 365 to USD 3107 across 80 offers analyzed in October 2026. The chart below shows how prices distributed across all 80 offers.
These 80 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 488 and USD 1166
What hidden fees do Ontario to Philadelphia flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Ontario to Philadelphia routes. The breakdown below is based on 80 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| Southwest | 45 | 10% |
| F9 | 262 | 66% |
| AA | 45 | 5% |
| American | 55 | 12% |
| DL | 45 | 2% |
| AS | 45 | 4% |
| UA | 45 | 4% |
Frontier Airlines: base ~USD 123 + fees USD 262 = ~USD 385 total. American Airlines: base ~USD 883 + fees USD 45 = ~USD 928 total.
Frontier Airlines's USD 262 ancillary fees narrow the gap with American Airlines's lower-fee model — the USD 760 base difference shrinks to USD 543 after fees. 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.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Ontario to Philadelphia?
8 airlines flew Ontario to Philadelphia 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.
Even on the cheapest airline (Frontier Airlines), fares ranged USD 385–419 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier Airlines | 3 | 385–419 | 385 | 262 (68%) |
 Frontier | 3 | 443–473 | 473 | n/a |
 American | 5 | 475–585 | 478 | 55 (12%) |
 Southwest | 9 | 365–491 | 480 | 45 (9%) |
 American Airlines | 20 | 467–1172 | 928 | 45 (5%) |
 United Airlines | 13 | 922–1177 | 978 | 45 (5%) |
 Alaska Airlines | 10 | 807–1506 | 1126 | 45 (4%) |
 Delta Air Lines | 17 | 911–2953 | 1946 | 45 (2%) |
Where do the best Ontario → Philadelphia 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: Ontario to Philadelphia flights
- Full-service carriers on Ontario–Philadelphia cost 2.4x more than budget airlines (USD 1091 vs USD 446 median; overall median USD 972).
- F9 charges 5.8x more in ancillary fees than UA — USD 262 vs USD 45 avg per booking.
- The same route priced USD 626 apart depending on where it was booked — the lowest median was USD 478. 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 Ontario to Philadelphia cost?
- Based on 80 offers analyzed, Ontario to Philadelphia flights range from USD 365 to USD 3107, with a median price of USD 972. Search for your specific dates →
- What hidden fees should I expect on Ontario to Philadelphia flights?
- On average, ancillary fees (bags, seat selection) add USD 54 to the base fare on Ontario to Philadelphia flights. See itemized fees for your itinerary →
- Which airline is cheapest on Ontario to Philadelphia including all fees?
- Frontier Airlines has the lowest median fare on Ontario to Philadelphia at USD 385 (median across 3 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Ontario–Philadelphia 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 478. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Ontario to Philadelphia routes?
- Ontario to Philadelphia has 8 airlines competing, creating a price range from USD 365 to USD 3107 across 80 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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