United Flight 4291 Deals & Information (2026/2027)

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United Flight 4291 Route Deals From $237

The cheapest prices found with in the last 7 days for return flights were $245 and $237 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jun 26 - Sun, Jun 28
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$245 Roundtrip, found 5 days ago
$245
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jun 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Jun 28, priced at $245 found 5 days ago
Fri, Jun 26 - Sun, Jun 28
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jun 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Jun 28, priced at $258 found 5 days ago
Fri, May 22 - Mon, May 25
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$260 Roundtrip, found 1 day ago
$260
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 22 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, May 25, priced at $260 found 1 day ago
Fri, Jun 26 - Sun, Jun 28
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$271 Roundtrip, found 5 days ago
$271
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jun 26 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Jun 28, priced at $271 found 5 days ago
Fri, May 22 - Mon, May 25
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 22 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, May 25, priced at $273 found 1 day ago
Wed, Jul 29 - Mon, Aug 17
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$285 Roundtrip, found 5 days ago
$285
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jul 29 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Aug 17, priced at $285 found 5 days ago
Fri, May 15 - Sun, May 17
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$291 Roundtrip, found 2 days ago
$291
Roundtrip
found 2 days ago
Select United flight, departing Fri, May 15 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, May 17, priced at $291 found 2 days ago
Thu, Oct 1 - Sat, Oct 3
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$302 Roundtrip, found 1 day ago
$302
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 1 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sat, Oct 3, priced at $302 found 1 day ago
Sat, May 16 - Sun, May 17
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$306 Roundtrip, found 18 hours ago
$306
Roundtrip
found 18 hours ago
Select United flight, departing Sat, May 16 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, May 17, priced at $306 found 18 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.