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Cheap flights from Philadelphia to Austin from $45

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 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to Austin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:11 pm - 10:34 am
PHL
-
AUS
17h 23m1 stop
Multiple Airlines Logo
5:58 pm - 8:47 am
AUS
-
PHL
13h 49m2 stops
$204Multiple Airlines
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
5:30 am - 8:53 pm
PHL
-
AUS
16h 23m2 stops
Multiple Airlines Logo
7:15 am - 7:52 pm
AUS
-
PHL
11h 37m1 stop
$205Multiple Airlines
Thu, Feb 19 - Sat, Feb 21
Multiple Airlines Logo
6:10 am - 8:44 pm
PHL
-
AUS
15h 34m2 stops
Multiple Airlines Logo
11:34 am - 8:44 am
AUS
-
PHL
20h 10m1 stop
$206Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Spirit Airlines Logo
6:00 am - 11:24 pm
PHL
-
AUS
18h 24m2 stops
Spirit Airlines Logo
5:50 am - 8:47 am
AUS
-
PHL
25h 57m2 stops
$207Spirit Airlines
Sat, Jan 24 - Sun, Feb 1
Spirit Airlines Logo
6:11 pm - 4:04 pm
PHL
-
AUS
22h 53m2 stops
Spirit Airlines Logo
7:25 am - 10:03 pm
AUS
-
PHL
13h 38m3 stops
$208Spirit Airlines
Fri, Jan 23 - Tue, Feb 3
Multiple Airlines Logo
6:11 pm - 10:34 am
PHL
-
AUS
17h 23m1 stop
Multiple Airlines Logo
6:02 pm - 12:52 am
AUS
-
PHL
5h 50m1 stop
$209Multiple Airlines
Sat, Jan 17 - Sun, Jan 18
Spirit Airlines Logo
5:30 am - 11:24 pm
PHL
-
AUS
18h 54m3 stops
Spirit Airlines Logo
7:25 am - 10:03 pm
AUS
-
PHL
13h 38m3 stops
$210Spirit Airlines
Sat, Jan 24 - Tue, Feb 3
Frontier Logo
10:18 pm - 7:51 pm
PHL
-
AUS
22h 33m1 stop
Frontier Logo
4:14 pm - 12:52 am
AUS
-
PHL
7h 38m1 stop
$211Frontier
Wed, Mar 18 - Tue, Mar 24
Multiple Airlines Logo
5:30 am - 8:53 pm
PHL
-
AUS
16h 23m2 stops
Multiple Airlines Logo
7:15 am - 8:44 am
AUS
-
PHL
24h 29m1 stop
$212Multiple Airlines
Thu, Feb 12 - Tue, Feb 17
Spirit Airlines Logo
5:30 am - 11:24 pm
PHL
-
AUS
18h 54m3 stops
Spirit Airlines Logo
7:25 am - 10:03 pm
AUS
-
PHL
13h 38m3 stops
$213Spirit Airlines
Tue, Feb 3 - Tue, Feb 10

Spirit Airlines flights from Philadelphia to Austin

Our best Spirit Airlines deals on Philadelphia to Austin flight tickets
Spirit Airlines
Jan 24
PHL6:00 amPhiladelphia
18h 24m
2 stops
AUS11:24 pmAustin Bergstrom
Feb 1
AUS5:50 amAustin Bergstrom
25h 57m
2 stops
PHL8:47 amPhiladelphia
$207
Find similar
Spirit Airlines
Jan 23
PHL6:11 pmPhiladelphia
22h 53m
2 stops
AUS4:04 pmAustin Bergstrom
Feb 3
AUS7:25 amAustin Bergstrom
13h 38m
3 stops
PHL10:03 pmPhiladelphia
$208
Find similar
Spirit Airlines
Jan 24
PHL5:30 amPhiladelphia
18h 54m
3 stops
AUS11:24 pmAustin Bergstrom
Feb 3
AUS7:25 amAustin Bergstrom
13h 38m
3 stops
PHL10:03 pmPhiladelphia
$210
Find similar

Frontier flights from Philadelphia to Austin

Our best Frontier deals on Philadelphia to Austin flight tickets
Frontier
Mar 18
PHL10:18 pmPhiladelphia
22h 33m
1 stop
AUS7:51 pmAustin Bergstrom
Mar 24
AUS4:14 pmAustin Bergstrom
7h 38m
1 stop
PHL12:52 amPhiladelphia
$211
Find similar
Frontier
Apr 9
PHL8:00 amPhiladelphia
9h 03m
1 stop
AUS4:03 pmAustin Bergstrom
Apr 12
AUS5:03 pmAustin Bergstrom
16h 28m
1 stop
PHL10:31 amPhiladelphia
$216
Find similar
Frontier
Mar 5
PHL5:30 amPhiladelphia
11h 10m
1 stop
AUS3:40 pmAustin Bergstrom
Mar 9
AUS4:14 pmAustin Bergstrom
7h 38m
1 stop
PHL12:52 amPhiladelphia
$218
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 January 6, 2026.
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

Fri 1/30

6:11 pm-10:34 am

1 stop17h 23m

Austin Bergstrom

Sun 2/1

5:58 pm-8:47 am

2 stops13h 49m

$204

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 2/19

5:30 am-8:53 pm

2 stops16h 23m

Austin Bergstrom

Sat 2/21

7:15 am-7:52 pm

1 stop11h 37m

$205

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Fri 2/20

6:10 am-8:44 pm

2 stops15h 34m

Austin Bergstrom

Mon 2/23

11:34 am-8:44 am

1 stop20h 10m

$206

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Sat 1/24

6:00 am-11:24 pm

2 stops18h 24m

Austin Bergstrom

Sun 2/1

5:50 am-8:47 am

2 stops25h 57m

$207

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Fri 1/23

6:11 pm-4:04 pm

2 stops22h 53m

Austin Bergstrom

Tue 2/3

7:25 am-10:03 pm

3 stops13h 38m

$208

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Sat 1/17

6:11 pm-10:34 am

1 stop17h 23m

Austin Bergstrom

Sun 1/18

6:02 pm-12:52 am

1 stop5h 50m

$209

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Sat 1/24

5:30 am-11:24 pm

3 stops18h 54m

Austin Bergstrom

Tue 2/3

7:25 am-10:03 pm

3 stops13h 38m

$210

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Wed 3/18

10:18 pm-7:51 pm

1 stop22h 33m

Austin Bergstrom

Tue 3/24

4:14 pm-12:52 am

1 stop7h 38m

$211

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Thu 2/12

5:30 am-8:53 pm

2 stops16h 23m

Austin Bergstrom

Tue 2/17

7:15 am-8:44 am

1 stop24h 29m

$212

PhiladelphiaAustin

PHL - AUS

PHLAUS

Philadelphia

Tue 2/3

5:30 am-11:24 pm

3 stops18h 54m

Austin Bergstrom

Tue 2/10

7:25 am-10:03 pm

3 stops13h 38m

$213

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 August. Flight prices, which tend to average around $220, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in August, then September is your next best option. Flight prices from Philadelphia to Austin during September average around $229.

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 Thursday when prices can be found for as low as $329. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Austin for around $431.

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

In the afternoon is the cheapest time of day to fly from Philadelphia to Austin when you can find flight prices for as low as $351. Flying to Austin in the afternoon 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 $465. 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 $374 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 $286 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 January 2026, prices for Philadelphia to Austin flights are approximately 4% 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

$226

Fastest flight time

3h 56m

Direct flights

Every day

Airports in Austin

1 airport
The best one-way flight to Austin from Philadelphia in the past 72 hours is $226. The best round-trip flight deal from Philadelphia to Austin found on momondo in the last 72 hours is $424.
The fastest flight from Philadelphia to Austin takes 3h 56m
Direct flights go from Philadelphia to Austin every day.
There is 1 airport in Austin. From Philadelphia there are direct flights to 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 56m 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 $102Free CancellationRating
5.7
3,064 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $155Free CancellationRating
6.3
8,273 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $158Free CancellationRating
8.0
4,247 reviews
Search Southwest flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
11,083 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,017 reviews
Search Delta flights
United AirlinesPriceFrom $322Free CancellationRating
7.4
9,132 reviews
Search United Airlines flights

  • American Airlines Flights From Philadelphia to Austin

    Across 13 American Airlines flights from Philadelphia to Austin this week, the average price was $429, with the best American Airlines deals starting from $186 round-trip. 11,083 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
Wimberley
San Marcos
Round Rock
Georgetown
Canyon Lake
Marble Falls
Horseshoe Bay
Cedar Park
Dripping Springs
Pflugerville
Kyle
Seguin
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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