Cheap flights from Philadelphia to Austin from $398 PHL → AUS
Philadelphia International Airport (PHL) → Austin-Bergstrom International Airport (AUS)
The cheapest return found recently is $398 with Frontier Airlines, 16 Nov – 22 Nov, found yesterday.
- Cheapest return found recently
- $398, 16 Nov to 22 Nov
- Usual return price
- $406 to $488
- Cheapest month to fly
- November 2026, return fares from $398 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $406 to $488.
Cheapest return found recently
$398
16 Nov – 22 Nov · Frontier Airlines
Philadelphia International Airport (PHL) → Austin-Bergstrom International Airport (AUS)
Leaves 5:15 a.m. · Return leaves 9:17 p.m. · 16 h 28 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$398 16 Nov – 22 Novfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 20 days, 10 Oct to 11 Nov, the cheapest return we saw each day was $344 to $562.
20 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 16 Nov to 1 May 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 6-night return fares leaving within 3 days of 16 Nov to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Nov – 22 Nov | $398 | Frontier Airlines | Philadelphia International Airport (PHL) → Austin-Bergstrom International Airport (AUS) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 17 Nov – 22 Nov | $413 | American Airlines | Philadelphia International Airport (PHL) → Austin-Bergstrom International Airport (AUS) | out nonstop, back 1 stop | found yesterday | See prices for these dates |
| 1 May 2027 – 4 May 2027 | $562 | Southwest Airlines | Philadelphia International Airport (PHL) → Austin-Bergstrom International Airport (AUS) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $398.
Airlines on the cheapest dates: Frontier Airlines, American Airlines, Southwest Airlines.
Premium cabin fares from Philadelphia to Austin
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 16 Nov – 22 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Philadelphia to Austin?
Return
Fares 60 to 89 days before departure were typically 10% lower than 14 to 29 days before departure.
From the cheapest return each day between 10 Oct and 11 Nov (20 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $380 | $380 | +11% | 8 |
| 60–89 days | $344 | $344 | Cheapest seen | 8 |
| 90–179 days | $460 | $460 | +34% | 11 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → Austin
145 km from Philadelphia
$229
$169 less than flying from Philadelphia
13 Dec – 15 Dec · BWI → AUS · out 1 stop, back 1 stop
found 3 days ago
New York → Austin
130 km from Philadelphia
$365
$33 less than flying from Philadelphia
7 Dec – 10 Dec · EWR → AUS · out 1 stop, back 1 stop
found 3 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 16 Nov – 22 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Philadelphia to Austin?
The cheapest return found recently is $398 with Frontier Airlines, 16 Nov to 22 Nov, found yesterday. The cheapest return fare on each of 3 departure dates is usually $406 to $488.
What is the cheapest month to fly from Philadelphia to Austin?
November 2026 is the cheapest month for a return, from $398, 16 Nov to 22 Nov, found yesterday.
How far ahead should I book a flight from Philadelphia to Austin?
In 20 days of prices between 10 Oct and 11 Nov, return fares 60 to 89 days before departure were typically 10% lower than 14 to 29 days before departure.
Which airlines have the cheapest flights from Philadelphia to Austin?
Between 16 Nov and 1 May 2027, Frontier Airlines has the cheapest return on 1 of the 3 departure dates we hold, American Airlines on 1 and Southwest Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work