United Flight UA4538 Deals & Information (2025/2026)

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United Flight 4538 Route Deals From $204

The cheapest prices found with in the last 7 days for return flights were $179 and $204 for one-way flights to Philadelphia Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jan 14 - Mon, Jan 19
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 14 from Washington Dulles Intl. to Philadelphia Intl., returning Mon, Jan 19, priced at $179 found 1 day ago
Fri, Sep 26 - Sun, Sep 28
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$183 Roundtrip, found 1 day ago
$183
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Sep 28, priced at $183 found 1 day ago
Fri, Dec 26 - Wed, Jan 14
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$190 Roundtrip, found 6 days ago
$190
Roundtrip
found 6 days ago
Select United flight, departing Fri, Dec 26 from Washington Dulles Intl. to Philadelphia Intl., returning Wed, Jan 14, priced at $190 found 6 days ago
Fri, Sep 26 - Sun, Sep 28
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$194 Roundtrip, found 1 day ago
$194
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Sep 28, priced at $194 found 1 day ago
Fri, Dec 26 - Wed, Jan 14
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$194 Roundtrip, found 6 days ago
$194
Roundtrip
found 6 days ago
Select United flight, departing Fri, Dec 26 from Washington Dulles Intl. to Philadelphia Intl., returning Wed, Jan 14, priced at $194 found 6 days ago
Thu, Jan 15 - Sun, Jan 18
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$210 Roundtrip, found 2 days ago
$210
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jan 15 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Jan 18, priced at $210 found 2 days ago
Fri, Sep 26 - Sun, Sep 28
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$213 Roundtrip, found 1 day ago
$213
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Sep 28, priced at $213 found 1 day ago
Wed, Sep 24 - Sat, Sep 27
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$215 Roundtrip, found 6 days ago
$215
Roundtrip
found 6 days ago
Select United flight, departing Wed, Sep 24 from Washington Dulles Intl. to Philadelphia Intl., returning Sat, Sep 27, priced at $215 found 6 days ago
Thu, Jan 15 - Sun, Jan 18
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jan 15 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Jan 18, priced at $221 found 2 days ago
Fri, Sep 26 - Sun, Sep 28
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Washington Dulles Intl. to Philadelphia Intl., returning Sun, Sep 28, priced at $224 found 1 day ago

Frequently asked questions

What route does flight number UA4538 take?
UA4538 takes several routes. The most frequently flown is between Charleston, SC Airport (CHS-Charleston Intl.) and IND, which is a direct flight. This flight typically takes 1 hour and 48 minutes. That said, there may possibly be other flights with this number that have one or more stops.
What kind of plane is on flight number UA4538?
There's a strong chance you'll be taking off on the Canadair (Bombardier) Regional Jet 550 if you're jetting from CHS to Indianapolis, IN Airport (IND-Indianapolis Intl.), one route used for flight number UA4538.
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 UA4538 flight with Travelocity, please visit our Customer Service Portal.