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Cheap flights from Philadelphia to Austin from $86

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Austin departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Philadelphia to Austin

Cheap round-trip flights

Frontier Logo
6:45 am - 10:00 pmPHL-AUS
16h 15m1 stop
Frontier Logo
10:23 am - 3:01 pmAUS-PHL
3h 38mnonstop
$142Frontier
Find Deal
Sat, Sep 13 - Mon, Sep 22
Frontier Logo
5:15 am - 4:34 pmPHL-AUS
12h 19m1 stop
Frontier Logo
5:29 pm - 12:57 amAUS-PHL
6h 28m1 stop
$143Frontier
Find Deal
Fri, Sep 5 - Mon, Sep 8
Frontier Logo
5:15 am - 4:34 pmPHL-AUS
12h 19m1 stop
Frontier Logo
5:29 pm - 12:57 amAUS-PHL
6h 28m1 stop
$144Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
5:15 pm - 5:25 pmPHL-AUS
25h 10m1 stop
Frontier Logo
5:24 pm - 12:57 amAUS-PHL
6h 33m1 stop
$145Frontier
Find Deal
Wed, Sep 3 - Sun, Sep 21
Logo
10:41 am - 11:02 pmPHL-AUS
13h 21m1 stop
Logo
10:23 am - 3:01 pmAUS-PHL
3h 38mnonstop
$146
Find Deal
Thu, Sep 25 - Mon, Sep 29
Logo
12:00 pm - 9:39 pmPHL-AUS
10h 39m1 stop
Logo
10:23 am - 3:01 pmAUS-PHL
3h 38mnonstop
$161
Find Deal
Tue, Sep 23 - Mon, Sep 29
American Airlines Logo
7:35 pm - 10:37 pmPHL-AUS
4h 02mnonstop
American Airlines Logo
7:00 am - 11:28 amAUS-PHL
3h 28mnonstop
$164American Airlines
Find Deal
Sat, Sep 13 - Mon, Sep 22
Southwest Logo
8:00 pm - 1:05 amPHL-AUS
6h 05m1 stop
Southwest Logo
5:30 am - 11:25 amAUS-PHL
4h 55m1 stop
$168Southwest
Find Deal
Thu, Nov 6 - Tue, Nov 11
American Airlines Logo
8:25 am - 11:14 amPHL-AUS
3h 49mnonstop
American Airlines Logo
7:00 am - 11:28 amAUS-PHL
3h 28mnonstop
$169American Airlines
Find Deal
Wed, Sep 10 - Mon, Sep 15
Southwest Logo
7:40 am - 1:30 pmPHL-AUS
6h 50m2 stops
Southwest Logo
5:30 am - 11:25 amAUS-PHL
4h 55m1 stop
$174Southwest
Find Deal
Thu, Nov 6 - Tue, Nov 11

Frontier flights from Philadelphia to Austin

Our best Frontier deals on Philadelphia to Austin flight tickets
Frontier
Sep 13
PHL6:45 amPhiladelphia
16h 15m
1 stop
AUS10:00 pmAustin Bergstrom
Sep 22
AUS10:23 amAustin Bergstrom
3h 38m
PHL3:01 pmPhiladelphia
$142
Find similar
Frontier
Sep 5
PHL5:15 amPhiladelphia
12h 19m
1 stop
AUS4:34 pmAustin Bergstrom
Sep 8
AUS5:29 pmAustin Bergstrom
6h 28m
1 stop
PHL12:57 amPhiladelphia
$143
Find similar
Frontier
Sep 25
PHL5:15 amPhiladelphia
12h 19m
1 stop
AUS4:34 pmAustin Bergstrom
Sep 29
AUS5:29 pmAustin Bergstrom
6h 28m
1 stop
PHL12:57 amPhiladelphia
$144
Find similar

Southwest flights from Philadelphia to Austin

Our best Southwest deals on Philadelphia to Austin flight tickets
Southwest
Nov 6
PHL8:00 pmPhiladelphia
6h 05m
1 stop
AUS1:05 amAustin Bergstrom
Nov 11
AUS5:30 amAustin Bergstrom
4h 55m
1 stop
PHL11:25 amPhiladelphia
$168
Find similar
Southwest
Nov 6
PHL7:40 amPhiladelphia
6h 50m
2 stops
AUS1:30 pmAustin Bergstrom
Nov 11
AUS5:30 amAustin Bergstrom
4h 55m
1 stop
PHL11:25 amPhiladelphia
$174
Find similar
Southwest
Nov 6
PHL7:40 amPhiladelphia
6h 50m
2 stops
AUS1:30 pmAustin Bergstrom
Nov 11
AUS6:30 amAustin Bergstrom
7h 35m
2 stops
PHL3:05 pmPhiladelphia
$179
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Austin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Philadelphia to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Sat 9/13

6:45 am-10:00 pm

1 stop16h 15m

Austin Bergstrom

Mon 9/22

10:23 am-3:01 pm

Nonstop3h 38m

$142

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Fri 9/5

5:15 am-4:34 pm

1 stop12h 19m

Austin Bergstrom

Mon 9/8

5:29 pm-12:57 am

1 stop6h 28m

$143

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 9/25

5:15 am-4:34 pm

1 stop12h 19m

Austin Bergstrom

Mon 9/29

5:29 pm-12:57 am

1 stop6h 28m

$144

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Wed 9/3

5:15 pm-5:25 pm

1 stop25h 10m

Austin Bergstrom

Sun 9/21

5:24 pm-12:57 am

1 stop6h 33m

$145

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 9/25

10:41 am-11:02 pm

1 stop13h 21m

Austin Bergstrom

Mon 9/29

10:23 am-3:01 pm

Nonstop3h 38m

$146

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Tue 9/23

12:00 pm-9:39 pm

1 stop10h 39m

Austin Bergstrom

Mon 9/29

10:23 am-3:01 pm

Nonstop3h 38m

$161

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Sat 9/13

7:35 pm-10:37 pm

Nonstop4h 02m

Austin Bergstrom

Mon 9/22

7:00 am-11:28 am

Nonstop3h 28m

$164

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 11/6

8:00 pm-1:05 am

1 stop6h 05m

Austin Bergstrom

Tue 11/11

5:30 am-11:25 am

1 stop4h 55m

$168

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Wed 9/10

8:25 am-11:14 am

Nonstop3h 49m

Austin Bergstrom

Mon 9/15

7:00 am-11:28 am

Nonstop3h 28m

$169

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 11/6

7:40 am-1:30 pm

2 stops6h 50m

Austin Bergstrom

Tue 11/11

5:30 am-11:25 am

1 stop4h 55m

$174

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Austin from

How to get the cheapest flight ticket from Philadelphia to Austin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Austin?

The cheapest month to fly to Austin from Philadelphia is in July. Flight prices, which tend to average around $243, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in July, then August is your next best option. Flight prices from Philadelphia to Austin during August average around $307.

What is the cheapest day to depart on your flight to Austin?

The cheapest day to depart on your flight to Austin is on a Saturday when prices can be found for as low as $374. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Austin for around $493.

What is the cheapest time of day to depart on your flight to Austin?

At noon is the cheapest time of day to fly from Philadelphia to Austin when you can find flight prices for as low as $347. Flying to Austin at noon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the evening, with an average ticket price of $467. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to Austin Bergstrom flight route?

Fly from Philadelphia to Austin Bergstrom for the best Philadelphia - Austin Bergstrom flight prices

How far in advance should I book a flight to Austin?

You are more likely to see cheaper flights to Austin from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $403 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Philadelphia for as low as $259 on momondo.

What cabin class options are available on Philadelphia to Austin Bergstrom flights?

There are 3 cabin classes available to choose from on Philadelphia to Austin Bergstrom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Austin flights?

No. A direct flight is the cheapest option for a flight between Philadelphia to Austin.

How have Philadelphia to Austin flight prices changed over time?

As of August 2025, prices for Philadelphia to Austin flights are approximately 46% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Austin

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Austin according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Austin (PHL to AUS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Austin

Best Price Found

$86

Fastest flight time

3h 42m

Direct flights

Every day

Airports in Austin

1 airport
The best one-way flight to Austin from Philadelphia in the past 72 hours is $86. The best round-trip flight deal from Philadelphia to Austin found on momondo in the last 72 hours is $142.
The fastest flight from Philadelphia to Austin takes 3h 42m
Direct flights go from Philadelphia to Austin every day.
There is 1 airport near Austin: Austin Bergstrom (AUS)
Search flight deals

  • How far is Philadelphia to Austin Bergstrom by plane?

    The distance between Philadelphia and Austin Bergstrom is about 1434.4 mi. Typically, this will take 3h 42m by plane in normal conditions.

  • When did momondo last update prices for flights from Philadelphia Airport to Austin Bergstrom Airport?

    Prices for flights from Philadelphia Airport to Austin Bergstrom Airport are updated daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Austin Bergstrom Airport?

  • How old do you have to be to fly from Philadelphia Airport to Austin Bergstrom Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Austin Bergstrom Airport.

  • What documentation or ID do you need to fly to Austin Bergstrom Airport?

    The necessary travel and health documents for your Austin Bergstrom Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Philadelphia to Austin?

  • What is the most popular airline from Philadelphia to Austin?

Best airlines flying from Philadelphia to Austin

Compare and see reviews for airlines that fly from Philadelphia to Austin with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $118Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
SouthwestPriceFrom $158Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
Spirit AirlinesPriceFrom $206Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $211Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights

  • American Airlines Flights From Philadelphia to Austin

    Across 24 American Airlines flights from Philadelphia to Austin this week, the average price was $446, with the best American Airlines deals starting from $211 round-trip. 10,000 users have rated American Airlines on momondo, with an average score of 7.2/10.

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
San Marcos
Round Rock
Wimberley
Georgetown
Canyon Lake
Marble Falls
Dripping Springs
Horseshoe Bay
Cedar Park
Pflugerville
Seguin
Kyle
Bastrop
Buda
Flatonia

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Austin?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Austin. momondo saves you time and could save you money on your trip.

Can I find flights from Philadelphia to Austin with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Austin from Philadelphia with this policy.

How can momondo help me find flights from Philadelphia to Austin?

momondo provides multiple filters to help you find the best flight to Austin from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Philadelphia to Austin right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Austin, momondo offers a useful price alert feature which will track prices for flights to Austin from Philadelphia and alert you when they change.

An easier way to manage your Austin trip

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