United Flight UA351 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 351 Route Deals From $1,383

The cheapest prices found with in the last 7 days for return flights were and $1,383 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA351 take?
You'll arrive into Denver, CO Airport (DEN-Denver Intl.) from IAD if you're traveling on flight number UA351. You'll be airborne for 3 hours and 59 minutes during this journey. It's also good to note that the flight conveniently operates non-stop.
What kind of plane is on flight number UA351?
Prepare to cruise the skies aboard a Boeing 737 MAX 9 if you're traveling on flight UA351. Almost all services from Dulles Intl. Airport to Denver, CO Airport (DEN-Denver Intl.) use this aircraft model.
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 UA351 flight with Travelocity, please visit our Customer Service Portal.