United Flight UA251 Deals & Information (2025/2026)

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 251 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $187 and $90 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 1 - Mon, Jul 7
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$187 Roundtrip, found 17 hours ago
$187
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Jul 1 from Bradley Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $187 found 17 hours ago
Sat, May 31 - Sun, Jun 1
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$192 Roundtrip, found 5 days ago
$192
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 31 from Bradley Intl. to Washington Dulles Intl., returning Sun, Jun 1, priced at $192 found 5 days ago
Wed, Jun 18 - Sat, Jun 21
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$192 Roundtrip, found 1 hour ago
$192
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Jun 18 from Bradley Intl. to Washington Dulles Intl., returning Sat, Jun 21, priced at $192 found 1 hour ago
Fri, Aug 8 - Thu, Aug 14
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$194 Roundtrip, found 17 hours ago
$194
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Aug 8 from Bradley Intl. to Washington Dulles Intl., returning Thu, Aug 14, priced at $194 found 17 hours ago
Tue, Jul 1 - Mon, Jul 7
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$197 Roundtrip, found 17 hours ago
$197
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Jul 1 from Bradley Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $197 found 17 hours ago
Tue, Jul 1 - Mon, Jul 7
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$202 Roundtrip, found 17 hours ago
$202
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Jul 1 from Bradley Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $202 found 17 hours ago
Fri, Aug 8 - Thu, Aug 14
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$208 Roundtrip, found 17 hours ago
$208
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Aug 8 from Bradley Intl. to Washington Dulles Intl., returning Thu, Aug 14, priced at $208 found 17 hours ago
Wed, Jul 2 - Mon, Jul 7
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$211 Roundtrip, found 6 days ago
$211
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 2 from Bradley Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $211 found 6 days ago
Thu, Jun 5 - Sun, Jun 8
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$213 Roundtrip, found 1 day ago
$213
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 5 from Bradley Intl. to Washington Dulles Intl., returning Sun, Jun 8, priced at $213 found 1 day ago
Thu, Jun 19 - Sat, Jun 21
BDL
Bradley Intl.
IAD
Washington Dulles Intl.
$215 Roundtrip, found 1 day ago
$215
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 19 from Bradley Intl. to Washington Dulles Intl., returning Sat, Jun 21, priced at $215 found 1 day ago

Frequently asked questions

What route does flight number UA251 take?
UA251 operates between Logan Intl. Airport and EWR directly. This service takes 1 hour and 20 minutes.
What terminal does UA251 fly out of?
Flights between Logan Intl. Airport (BOS) and Newark, NJ Airport (EWR-Liberty Intl.) are served by flight number UA251, and travelers with a seat booked on this route usually take off from Terminal B.
What kind of plane is on flight number UA251?
The Boeing 737-800 is the type of aircraft predominantly used for flight number UA251. This flight almost always jets off from Logan Intl. Airport (BOS) and lands at Newark Airport.
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 UA251 flight with Travelocity, please visit our Customer Service Portal.