United Flight 251 Deals & Information (2026/2027)

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United Flight 251 Route Deals From $165

The cheapest prices found with in the last 7 days for return flights were $237 and $165 for one-way flights to Louis Armstrong New Orleans Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 10 - Tue, Jun 16
IAD
Washington Dulles Intl.
MSY
Louis Armstrong New Orleans Intl.
$237 Roundtrip, found 3 days ago
$237
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jun 10 from Washington Dulles Intl. to Louis Armstrong New Orleans Intl., returning Tue, Jun 16, priced at $237 found 3 days ago
Tue, May 5 - Wed, May 6
IAD
Washington Dulles Intl.
MSY
Louis Armstrong New Orleans Intl.
$243 Roundtrip, found 9 hours ago
$243
Roundtrip
found 9 hours ago
Select United flight, departing Tue, May 5 from Washington Dulles Intl. to Louis Armstrong New Orleans Intl., returning Wed, May 6, priced at $243 found 9 hours 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.