United Flight 4291 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 4291 Route Deals From $269

The cheapest prices found with in the last 7 days for return flights were $163 and $269 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 26 - Fri, Nov 27
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$163 Roundtrip, found 14 hours ago
$163
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 27, priced at $163 found 14 hours ago
Thu, Dec 10 - Sat, Dec 12
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 10 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Dec 12, priced at $187 found 1 day ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$236 Roundtrip, found 21 hours ago
$236
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $236 found 21 hours ago
Thu, Nov 26 - Fri, Nov 27
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$244 Roundtrip, found 14 hours ago
$244
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 27, priced at $244 found 14 hours ago
Thu, Nov 26 - Fri, Nov 27
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$253 Roundtrip, found 14 hours ago
$253
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 27, priced at $253 found 14 hours ago
Wed, Dec 2 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$260 Roundtrip, found 18 hours ago
$260
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Dec 2 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $260 found 18 hours ago
Sat, Dec 5 - Fri, Dec 11
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$271 Roundtrip, found 14 hours ago
$271
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Dec 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Dec 11, priced at $271 found 14 hours ago
Thu, Dec 10 - Sat, Dec 12
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 10 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Dec 12, priced at $277 found 1 day ago
Sat, Dec 5 - Fri, Dec 11
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$291 Roundtrip, found 14 hours ago
$291
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Dec 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Dec 11, priced at $291 found 14 hours ago
Sat, Dec 5 - Fri, Dec 11
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$300 Roundtrip, found 14 hours ago
$300
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Dec 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Dec 11, priced at $300 found 14 hours ago
Thu, Nov 26 - Fri, Nov 27
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$306 Roundtrip, found 14 hours ago
$306
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 27, priced at $306 found 14 hours ago
Thu, Dec 10 - Sat, Dec 12
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$312 Roundtrip, found 1 day ago
$312
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 10 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Dec 12, priced at $312 found 1 day ago
Sat, Dec 5 - Tue, Dec 8
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$315 Roundtrip, found 3 days ago
$315
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Dec 8, priced at $315 found 3 days ago
Thu, Dec 10 - Sat, Dec 12
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$318 Roundtrip, found 1 day ago
$318
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 10 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Dec 12, priced at $318 found 1 day ago
Thu, Nov 26 - Fri, Nov 27
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$323 Roundtrip, found 14 hours ago
$323
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 27, priced at $323 found 14 hours ago
Mon, Jan 4 - Mon, Jan 11
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jan 4 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Jan 11, priced at $324 found 2 days ago
Sat, Dec 5 - Fri, Dec 11
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$326 Roundtrip, found 14 hours ago
$326
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Dec 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Dec 11, priced at $326 found 14 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$326 Roundtrip, found 21 hours ago
$326
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $326 found 21 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$330 Roundtrip, found 21 hours ago
$330
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $330 found 21 hours ago

Frequently asked questions

What route does flight number UA4291 take?
UA4291 operates from Denver, CO Airport (DEN-Denver Intl.) to Tulsa Intl. Airport and flies direct. This service generally takes 1 hour and 47 minutes.
What kind of plane is on flight number UA4291?
The Embraer ERJ is the aircraft model most commonly used for flight number UA4291. Usually, this flight departs from Denver, CO Airport (DEN-Denver Intl.) and comes in to land at Tulsa Intl. Airport (TUL).
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA4291 flight with Travelocity, please visit our Customer Service Portal.