United Flight 1257 Deals & Information (2026/2027)

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United Flight 1257 Route Deals From $99

The cheapest prices found with in the last 7 days for return flights were $156 and $99 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Mar 7 - Wed, Mar 11
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$156 Roundtrip, found 1 day ago
$156
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 7 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Wed, Mar 11, priced at $156 found 1 day ago
Wed, Feb 18 - Sun, Feb 22
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$160 Roundtrip, found 2 days ago
$160
Roundtrip
found 2 days ago
Select United flight, departing Wed, Feb 18 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Feb 22, priced at $160 found 2 days ago
Thu, Mar 12 - Thu, Mar 19
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$175 Roundtrip, found 1 day ago
$175
Roundtrip
found 1 day ago
Select United flight, departing Thu, Mar 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Thu, Mar 19, priced at $175 found 1 day ago
Fri, Mar 6 - Sat, Mar 14
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 2 days ago
$179
Roundtrip
found 2 days ago
Select United flight, departing Fri, Mar 6 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sat, Mar 14, priced at $179 found 2 days ago
Sat, Mar 21 - Mon, Mar 23
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$180 Roundtrip, found 2 days ago
$180
Roundtrip
found 2 days ago
Select United flight, departing Sat, Mar 21 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Mon, Mar 23, priced at $180 found 2 days ago
Fri, Feb 20 - Sun, Feb 22
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$184 Roundtrip, found 1 day ago
$184
Roundtrip
found 1 day ago
Select United flight, departing Fri, Feb 20 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Feb 22, priced at $184 found 1 day ago
Thu, Jan 29 - Thu, Feb 5
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$190 Roundtrip, found 1 day ago
$190
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 29 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Thu, Feb 5, priced at $190 found 1 day ago
Fri, Feb 20 - Sun, Feb 22
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select United flight, departing Fri, Feb 20 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Feb 22, priced at $199 found 1 day ago