American Airlines Flight 478 Deals & Information (2025/2026)

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American Airlines Flight 478 Route Deals From $135

The cheapest prices found with in the last 7 days for return flights were $253 and $135 for one-way flights to Philadelphia Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 19 - Tue, Aug 26
PHX
Sky Harbor Intl.
PHL
Philadelphia Intl.
$253 Roundtrip, found 4 days ago
$253
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Sky Harbor Intl. to Philadelphia Intl., returning Tue, Aug 26, priced at $253 found 4 days ago
Wed, Aug 20 - Wed, Aug 27
PHX
Sky Harbor Intl.
PHL
Philadelphia Intl.
$254 Roundtrip, found 4 days ago
$254
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Aug 20 from Sky Harbor Intl. to Philadelphia Intl., returning Wed, Aug 27, priced at $254 found 4 days ago
Tue, Sep 16 - Sat, Sep 20
PHX
Sky Harbor Intl.
PHL
Philadelphia Intl.
$255 Roundtrip, found 4 days ago
$255
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 16 from Sky Harbor Intl. to Philadelphia Intl., returning Sat, Sep 20, priced at $255 found 4 days ago
Wed, Oct 8 - Sat, Oct 18
PHX
Sky Harbor Intl.
PHL
Philadelphia Intl.
$423 Roundtrip, found 2 days ago
$423
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Oct 8 from Sky Harbor Intl. to Philadelphia Intl., returning Sat, Oct 18, priced at $423 found 2 days ago
Tue, Oct 28 - Sun, Nov 2
PHX
Sky Harbor Intl.
TTN
Mercer
$443 Roundtrip, found 5 days ago
$443
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Oct 28 from Sky Harbor Intl. to Mercer, returning Sun, Nov 2, priced at $443 found 5 days ago
Mon, Jun 1 - Sat, Jun 6
PHX
Sky Harbor Intl.
TTN
Mercer
$473 Roundtrip, found 1 day ago
$473
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Jun 1 from Sky Harbor Intl. to Mercer, returning Sat, Jun 6, priced at $473 found 1 day ago
Sun, Sep 21 - Thu, Sep 25
PHX
Sky Harbor Intl.
TTN
Mercer
$477 Roundtrip, found 3 days ago
$477
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Sep 21 from Sky Harbor Intl. to Mercer, returning Thu, Sep 25, priced at $477 found 3 days ago

Frequently asked questions

What route does flight number AA478 take?
AA478 is used on multiple routes. Most commonly, AA478 flies straight from PHX to Philadelphia Airport. If this is your route, you'll be up above the clouds for around 4 hours and 45 minutes.
How often is AA478 on time?
If you're flying with American Airlines on flight number AA478 between Phoenix Sky Harbor Intl. Airport and Philadelphia Intl. Airport (PHL), your trip will be on time 94% of the time --- when you're running on a tight schedule, it's a relief knowing that your airline does too. If there happens to be an unforeseen delay, the average set back is just 9 minutes. This flight has a 4.05-star rating.
What terminal does AA478 fly out of?
AA478 flights from Phoenix Sky Harbor Intl. Airport usually leave from Terminal 4. This flight number runs on a variety of routes, but the most popular one is Phoenix Sky Harbor Intl. Airport to Philadelphia Airport.
What kind of plane is on flight number AA478?
Chances are you'll travel aboard an Airbus A321 if you're booked on flight AA478 from PHX to PHL. This is the most commonly used type of aircraft on this popular route.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AA478 flight with Travelocity, please visit our Customer Service Portal.