Flights Philadelphia → Austin
As of September 2026, economy flights from Philadelphia to Austin have a typical range USD 315–630, median USD 454. Full range across all 216 offers: USD 125–1074. We analyzed 216 offers from 9 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 → Austin
Based on 216 offers · September 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Philadelphia → Austin
Add-on pricing from the cheapest available offer per airline · September 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| JetBlue | — | USD 35 | — |
| Frontier | — | — | — |
| American Airlines | Included | USD 35 | — |
| United Airlines | Included | USD 35 | — |
| Southwest Airlines | — | USD 45 | — |
| Alaska Airlines | Included | USD 35 | — |
| Delta | 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 Austin cost?
Based on 216 offers · September 2026
Philadelphia to Austin flights ranged from USD 125 to USD 1074 across 216 offers analyzed in September 2026. The chart below shows how prices distributed across all 216 offers.
These 216 offers (September 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 363 and USD 564
What hidden fees do Philadelphia to Austin flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Philadelphia to Austin routes. The breakdown below is based on 216 offers analyzed in September 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| B6 | 30 | 6% |
| F9 | 10 | 6% |
| AA | 48 | 11% |
| UA | 46 | 10% |
| WN | 4 | 1% |
| AS | 45 | 8% |
| DL | 45 | 8% |
American Airlines: base ~USD 382 + fees USD 48 = ~USD 430 total. Southwest Airlines: base ~USD 521 + fees USD 4 = ~USD 525 total.
American Airlines's USD 48 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 139 base difference shrinks to USD 95 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.AA charges 11.7x more in ancillary fees than WN 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 Austin?
9 airlines flew Philadelphia to Austin 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 138–182 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 | 8 | 138–182 | 166 | 10 (6%) |
 Frontier | 3 | 154–295 | 191 | n/a |
 United Airlines | 35 | 327–721 | 387 | 46 (12%) |
 American Airlines | 69 | 327–563 | 430 | 48 (11%) |
 B6 | 54 | 344–630 | 467 | 30 (6%) |
 Southwest Airlines | 22 | 296–691 | 525 | 4 (1%) |
 Delta Air Lines | 22 | 563–629 | 564 | 45 (8%) |
 Alaska Airlines | 2 | 560–589 | 575 | 45 (8%) |
 American | 1 | — | 687 | n/a |
Where do the best Philadelphia → Austin prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search 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 Austin flights
- Full-service carriers on Philadelphia–Austin cost 1.6x more than budget airlines (USD 528 vs USD 337 median; overall median USD 454).
- AA charges 11.7x more in ancillary fees than WN — USD 48 vs USD 4 avg per booking.
- The same route priced USD 205 apart depending on where it was booked — the lowest median was USD 359. 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 Austin cost?
- Based on 216 offers analyzed, Philadelphia to Austin flights range from USD 125 to USD 1074, with a median price of USD 454. Search for your specific dates →
- What hidden fees should I expect on Philadelphia to Austin flights?
- On average, ancillary fees (bags, seat selection) add USD 37 to the base fare on Philadelphia to Austin flights. See itemized fees for your itinerary →
- Which airline is cheapest on Philadelphia to Austin including all fees?
- Frontier Airlines has the lowest median fare on Philadelphia to Austin at USD 166 (median across 8 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Philadelphia–Austin 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 359. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Philadelphia to Austin routes?
- Philadelphia to Austin has 9 airlines competing, creating a price range from USD 125 to USD 1074 across 216 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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