United Flight 1257 Deals & Information (2026/2027)

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United Flight 1257 Route Deals From $101

The cheapest prices found with in the last 7 days for return flights were $156 and $101 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 5 days ago
$156
Roundtrip
found 5 days ago
Select United flight, departing Sat, Mar 7 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Wed, Mar 11, priced at $156 found 5 days ago
Wed, Feb 18 - Sun, Feb 22
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$160 Roundtrip, found 6 days ago
$160
Roundtrip
found 6 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 6 days ago
Thu, Mar 12 - Thu, Mar 19
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$175 Roundtrip, found 5 days ago
$175
Roundtrip
found 5 days ago
Select United flight, departing Thu, Mar 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Thu, Mar 19, priced at $175 found 5 days ago
Thu, Feb 12 - Sun, Feb 15
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$177 Roundtrip, found 11 hours ago
$177
Roundtrip
found 11 hours ago
Select United flight, departing Thu, Feb 12 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Feb 15, priced at $177 found 11 hours ago
Wed, Nov 4 - Wed, Nov 11
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 3 days ago
$179
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 4 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Wed, Nov 11, priced at $179 found 3 days ago
Sat, Mar 21 - Mon, Mar 23
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$180 Roundtrip, found 4 days ago
$180
Roundtrip
found 4 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 4 days ago
Fri, Mar 6 - Sun, Mar 8
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$184 Roundtrip, found 2 days ago
$184
Roundtrip
found 2 days ago
Select United flight, departing Fri, Mar 6 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Mar 8, priced at $184 found 2 days ago
Fri, Feb 20 - Sun, Feb 22
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$199 Roundtrip, found 5 days ago
$199
Roundtrip
found 5 days ago
Select United flight, departing Fri, Feb 20 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Sun, Feb 22, priced at $199 found 5 days ago
Mon, Mar 23 - Tue, Mar 24
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$205 Roundtrip, found 3 days ago
$205
Roundtrip
found 3 days ago
Select United flight, departing Mon, Mar 23 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Mar 24, priced at $205 found 3 days ago
Sat, Mar 7 - Tue, Mar 10
RDU
Raleigh - Durham Intl.
IAD
Washington Dulles Intl.
$213 Roundtrip, found 1 day ago
$213
Roundtrip
found 1 day ago
Select United flight, departing Sat, Mar 7 from Raleigh - Durham Intl. to Washington Dulles Intl., returning Tue, Mar 10, priced at $213 found 1 day ago