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 $278 and $269 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Nov 13 - Sat, Nov 14
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$278 Roundtrip, found 2 days ago
$278
Roundtrip
found 2 days ago
Select United flight, departing Fri, Nov 13 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Nov 14, priced at $278 found 2 days ago
Sat, Nov 7 - Mon, Nov 9
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$293 Roundtrip, found 3 days ago
$293
Roundtrip
found 3 days ago
Select United flight, departing Sat, Nov 7 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Nov 9, priced at $293 found 3 days ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$309 Roundtrip, found 3 hours ago
$309
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $309 found 3 hours ago
Fri, Nov 13 - Sun, Nov 22
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$315 Roundtrip, found 23 hours ago
$315
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Nov 13 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Nov 22, priced at $315 found 23 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$324 Roundtrip, found 3 hours ago
$324
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $324 found 3 hours ago
Tue, Nov 24 - Sun, Nov 29
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$330 Roundtrip, found 3 days ago
$330
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 24 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Nov 29, priced at $330 found 3 days ago
Fri, Nov 6 - Fri, Nov 13
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$331 Roundtrip, found 23 hours ago
$331
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Nov 6 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 13, priced at $331 found 23 hours ago
Sat, Nov 14 - Sun, Nov 22
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$354 Roundtrip, found 23 hours ago
$354
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Nov 14 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Nov 22, priced at $354 found 23 hours ago
Fri, Nov 13 - Sat, Nov 14
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$365 Roundtrip, found 2 days ago
$365
Roundtrip
found 2 days ago
Select United flight, departing Fri, Nov 13 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Nov 14, priced at $365 found 2 days ago
Sat, Nov 14 - Sun, Nov 22
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$375 Roundtrip, found 23 hours ago
$375
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Nov 14 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Nov 22, priced at $375 found 23 hours ago
Fri, Nov 6 - Fri, Nov 13
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$379 Roundtrip, found 23 hours ago
$379
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Nov 6 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Fri, Nov 13, priced at $379 found 23 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$379 Roundtrip, found 3 hours ago
$379
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $379 found 3 hours ago
Fri, Nov 13 - Sun, Nov 22
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$386 Roundtrip, found 23 hours ago
$386
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Nov 13 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Nov 22, priced at $386 found 23 hours ago
Sat, Nov 7 - Mon, Nov 9
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$390 Roundtrip, found 3 days ago
$390
Roundtrip
found 3 days ago
Select United flight, departing Sat, Nov 7 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Nov 9, priced at $390 found 3 days ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$394 Roundtrip, found 3 hours ago
$394
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $394 found 3 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$399 Roundtrip, found 3 hours ago
$399
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $399 found 3 hours ago
Wed, Nov 25 - Sun, Dec 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$414 Roundtrip, found 3 hours ago
$414
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 25 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Dec 6, priced at $414 found 3 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.