United Flight 284 Deals & Information (2025/2026)

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United Flight 284 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $321 and $214 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jan 29 - Tue, Feb 3
LAS
Harry Reid Intl.
IAD
Washington Dulles Intl.
$321 Roundtrip, found 2 days ago
$321
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jan 29 from Harry Reid Intl. to Washington Dulles Intl., returning Tue, Feb 3, priced at $321 found 2 days ago
Fri, Jan 23 - Wed, Jan 28
LAS
Harry Reid Intl.
IAD
Washington Dulles Intl.
$367 Roundtrip, found 2 days ago
$367
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jan 23 from Harry Reid Intl. to Washington Dulles Intl., returning Wed, Jan 28, priced at $367 found 2 days ago

Frequently asked questions

What route does flight number UA284 take?
UA284 operates directly from Denver Intl. Airport (DEN) to SMF. During this trip, you can expect to be in the air for about 2 hours and 33 minutes. It pays to book ahead to get your favorite seat.
What kind of plane is on flight number UA284?
There's a good chance you'll find yourself stepping on board a Boeing 737-800 if your flight number is UA284. Generally, this flight sets off from DEN and touches down at Sacramento 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 UA284 flight with Travelocity, please visit our Customer Service Portal.