United Flight 1257 Deals & Information (2025/2026)

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United Flight 1257 Route Deals From $59

The cheapest prices found with in the last 7 days for return flights were $127 and $59 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Jan 18 - Wed, Jan 28
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$127 Roundtrip, found 17 hours ago
$127
Roundtrip
found 17 hours ago
Select United flight, departing Sun, Jan 18 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Wed, Jan 28, priced at $127 found 17 hours ago
Mon, Jan 19 - Wed, Jan 21
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$144 Roundtrip, found 3 days ago
$144
Roundtrip
found 3 days ago
Select United flight, departing Mon, Jan 19 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Wed, Jan 21, priced at $144 found 3 days ago
Thu, Dec 4 - Thu, Dec 11
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$148 Roundtrip, found 3 days ago
$148
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 4 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Thu, Dec 11, priced at $148 found 3 days ago
Fri, Dec 12 - Tue, Jan 6
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$151 Roundtrip, found 4 days ago
$151
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Jan 6, priced at $151 found 4 days ago
Fri, Jan 30 - Tue, Feb 10
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$158 Roundtrip, found 8 hours ago
$158
Roundtrip
found 8 hours ago
Select United flight, departing Fri, Jan 30 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Feb 10, priced at $158 found 8 hours ago
Fri, Dec 12 - Tue, Jan 6
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$166 Roundtrip, found 4 days ago
$166
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Jan 6, priced at $166 found 4 days ago
Thu, Nov 27 - Fri, Nov 28
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$168 Roundtrip, found 6 days ago
$168
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 27 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Fri, Nov 28, priced at $168 found 6 days ago
Thu, Dec 4 - Thu, Dec 11
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$175 Roundtrip, found 3 days ago
$175
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 4 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Thu, Dec 11, priced at $175 found 3 days ago
Fri, Dec 12 - Tue, Jan 6
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$177 Roundtrip, found 4 days ago
$177
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Jan 6, priced at $177 found 4 days ago
Fri, Dec 12 - Tue, Jan 6
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 4 days ago
$179
Roundtrip
found 4 days ago
Select United flight, departing Fri, Dec 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Jan 6, priced at $179 found 4 days ago