United Flight UA4251 Deals & Information (2025/2026)

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United Flight 4251 Route Deals From $100

The cheapest prices found with in the last 7 days for return flights were $199 and $100 for one-way flights to McGhee Tyson for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Feb 19 - Sat, Feb 22
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$199 Roundtrip, found 23 hours ago
$199
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Feb 19 from Washington Dulles Intl. to McGhee Tyson, returning Sat, Feb 22, priced at $199 found 23 hours ago
Sat, Feb 15 - Tue, Feb 18
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$209 Roundtrip, found 2 days ago
$209
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 15 from Washington Dulles Intl. to McGhee Tyson, returning Tue, Feb 18, priced at $209 found 2 days ago
Wed, Feb 19 - Sat, Feb 22
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$216 Roundtrip, found 23 hours ago
$216
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Feb 19 from Washington Dulles Intl. to McGhee Tyson, returning Sat, Feb 22, priced at $216 found 23 hours ago
Sat, Feb 15 - Tue, Feb 18
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 15 from Washington Dulles Intl. to McGhee Tyson, returning Tue, Feb 18, priced at $225 found 2 days ago
Wed, Feb 12 - Fri, Feb 14
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select United flight, departing Wed, Feb 12 from Washington Dulles Intl. to McGhee Tyson, returning Fri, Feb 14, priced at $229 found 3 days ago
Sat, Feb 15 - Tue, Feb 18
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$235 Roundtrip, found 2 days ago
$235
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 15 from Washington Dulles Intl. to McGhee Tyson, returning Tue, Feb 18, priced at $235 found 2 days ago
Wed, Feb 19 - Sat, Feb 22
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$238 Roundtrip, found 23 hours ago
$238
Roundtrip
found 23 hours ago
Select United flight, departing Wed, Feb 19 from Washington Dulles Intl. to McGhee Tyson, returning Sat, Feb 22, priced at $238 found 23 hours ago
Wed, Feb 12 - Fri, Feb 14
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$239 Roundtrip, found 3 days ago
$239
Roundtrip
found 3 days ago
Select United flight, departing Wed, Feb 12 from Washington Dulles Intl. to McGhee Tyson, returning Fri, Feb 14, priced at $239 found 3 days ago
Sat, Feb 15 - Tue, Feb 18
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$241 Roundtrip, found 2 days ago
$241
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 15 from Washington Dulles Intl. to McGhee Tyson, returning Tue, Feb 18, priced at $241 found 2 days ago
Sat, Feb 15 - Tue, Feb 18
IAD
Washington Dulles Intl.
TYS
McGhee Tyson
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 15 from Washington Dulles Intl. to McGhee Tyson, returning Tue, Feb 18, priced at $249 found 2 days ago