United Flight 4242 Deals & Information (2026/2027)

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United Flight 4242 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.

Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$179 Roundtrip, found 2 days ago
$179
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $179 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$189 Roundtrip, found 2 days ago
$189
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $189 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$215 Roundtrip, found 2 days ago
$215
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $215 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$219 Roundtrip, found 2 days ago
$219
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $219 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $225 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$229 Roundtrip, found 2 days ago
$229
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $229 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $239 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $249 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$275 Roundtrip, found 2 days ago
$275
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $275 found 2 days ago
Mon, Jun 1 - Fri, Jun 12
IAD
Washington Dulles Intl.
PHL
Philadelphia Intl.
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jun 1 from Washington Dulles Intl. to Philadelphia Intl., returning Fri, Jun 12, priced at $279 found 2 days ago