United Flight 4251 Deals & Information (2025/2026)

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United Flight 4251 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 Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 13 - Sun, Sep 14
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 4 days ago
$179
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Hancock Intl. to Washington Dulles Intl., returning Sun, Sep 14, priced at $179 found 4 days ago
Sat, Sep 13 - Sun, Sep 14
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$189 Roundtrip, found 4 days ago
$189
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Hancock Intl. to Washington Dulles Intl., returning Sun, Sep 14, priced at $189 found 4 days ago
Sat, Sep 13 - Sun, Sep 14
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Hancock Intl. to Washington Dulles Intl., returning Sun, Sep 14, priced at $199 found 4 days ago
Fri, Jul 4 - Sat, Jul 5
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$217 Roundtrip, found 3 days ago
$217
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jul 4 from Hancock Intl. to Washington Dulles Intl., returning Sat, Jul 5, priced at $217 found 3 days ago
Fri, Jul 4 - Sat, Jul 5
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$227 Roundtrip, found 3 days ago
$227
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jul 4 from Hancock Intl. to Washington Dulles Intl., returning Sat, Jul 5, priced at $227 found 3 days ago
Sat, Jul 5 - Tue, Jul 8
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$229 Roundtrip, found 18 hours ago
$229
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 5 from Hancock Intl. to Washington Dulles Intl., returning Tue, Jul 8, priced at $229 found 18 hours ago
Wed, Sep 10 - Sun, Sep 14
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 10 from Hancock Intl. to Washington Dulles Intl., returning Sun, Sep 14, priced at $239 found 4 days ago
Sat, Jul 5 - Tue, Jul 8
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$244 Roundtrip, found 18 hours ago
$244
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 5 from Hancock Intl. to Washington Dulles Intl., returning Tue, Jul 8, priced at $244 found 18 hours ago
Mon, Sep 15 - Mon, Sep 22
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$249 Roundtrip, found 4 days ago
$249
Roundtrip
found 4 days ago
Select United flight, departing Mon, Sep 15 from Hancock Intl. to Washington Dulles Intl., returning Mon, Sep 22, priced at $249 found 4 days ago
Sat, Jul 26 - Mon, Jul 28
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$254 Roundtrip, found 6 days ago
$254
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jul 26 from Hancock Intl. to Washington Dulles Intl., returning Mon, Jul 28, priced at $254 found 6 days ago
Sat, Sep 13 - Sun, Sep 14
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Hancock Intl. to Washington Dulles Intl., returning Sun, Sep 14, priced at $259 found 4 days ago
Sat, Jul 5 - Tue, Jul 8
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$284 Roundtrip, found 18 hours ago
$284
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 5 from Hancock Intl. to Washington Dulles Intl., returning Tue, Jul 8, priced at $284 found 18 hours ago
Sat, Jul 5 - Tue, Jul 8
SYR
Hancock Intl.
IAD
Washington Dulles Intl.
$289 Roundtrip, found 18 hours ago
$289
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 5 from Hancock Intl. to Washington Dulles Intl., returning Tue, Jul 8, priced at $289 found 18 hours ago