$164 Cheap United flights Washington (DCA) to Las Vegas (LAS)

View $164 flight on Sat, Jan 17, 2026Opens in a new window

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$164 Cheap United flights Washington (DCA) to Las Vegas (LAS)

Prices were available within the past 7 days and start at $164 for one-way flights and $332 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 24 - Thu, Dec 25
DCA
Washington
LAS
Las Vegas
$332 Roundtrip, found 2 hours ago
$332
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Dec 24 from Washington to Las Vegas, returning Thu, Dec 25, priced at $332 found 2 hours ago
Flights from Washington (DCA) to Las Vegas (LAS)
Origin airport
Ronald Reagan Washington National
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Popular airline
JetBlue Airways
Distance
2083 mi
Average flight time
3 hours 15 mins

Frequently asked questions

How much is a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Harry Reid Intl. Airport (LAS)?
Landing cheap one-way United Airlines flights from DCA to LAS from $164 on Expedia is a breeze — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $332 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DCA to LAS with United Airlines?
United Airlines flights to Las Vegas are often more affordable in the quieter months of January and June. Whether you're in search of a return or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Ronald Reagan Washington National Airport (DCA) to Harry Reid Intl. Airport (LAS) with United Airlines?
Look for cheap United Airlines flights from Ronald Reagan Washington National Airport (DCA) to Harry Reid Intl. Airport (LAS) one to three months ahead of your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the best day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Ronald Reagan Washington National Airport (DCA) to Harry Reid Intl. Airport (LAS)?
Click on our "Nonstop" filter when looking for direct United Airlines flights from DCA to LAS. You'll also be able to compare other airlines servicing the same direct route.
What is the earliest United Airlines flight from DCA to LAS?
Sort your results by "Morning" and "Early Morning" to find the earliest flights from DCA to LAS. Taking off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Las Vegas?
Board a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Las Vegas, and you'll probably touch down at Harry Reid Intl. Airport (LAS). This is the airline's main hub here.
Why fly with United Airlines from DCA to LAS?
Offering a rewarding loyalty program, United Airlines is a popular choice for many travelers journeying from DCA to LAS. Plus, if you're a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Harry Reid Intl. Airport (LAS)?
Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that. For further details about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to update your itinerary without additional charges, check the "Changes included" or "No cancel fee" filter when planning your next break.

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*Available to One Key members.