$99 Cheap United flights Los Angeles (LAX) to Washington (IAD)

You’ll find cheap return United Airlines flights from $211 from LAX to IAD by filtering your results from “Price (lowest to highest)” on Expedia. Or look for deals from $99 for a one-way trip.**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.

United Airlines flights to Washington are generally cheaper in the quieter months of January and February. Whether you’re searching for a one-way or a return ticket, you could find a better deal then.

Begin your search one to three months ahead of your travel date to get cheap fares on United Airlines flights from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*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.

Yes, you can travel from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD) on one of United Airlines’s 32 direct weekly flights. Apply our “Nonstop” and “Airline” filters to find the United Airlines flight that’ll land at IAD at your preferred time.

It takes around 4h 43m to travel nonstop from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD) with United Airlines.

If it’s flexibility you’re after, Sunday offers the most choice for United Airlines flights from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD). You can pick from 5 different departures.

The earliest flight from LAX to IAD with United Airlines departs at 8:40AM UTC-8. You’ll touch down at 4:14PM UTC-5. The last United Airlines flight of the day takes off at 11:20PM UTC-8 and arrives at 7:08AM UTC-5. With 20% fewer cancellations for morning and mid-morning flights, heading out early is often the smartest option.**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.

Washington Dulles Intl. Airport (IAD) is the main Washington hub for United Airlines flights from Los Angeles Intl. Airport (LAX). Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) are other options. When planning your break through Expedia, choose the “All Airports” option for your destination to see exactly what’s available.

Fly from LAX to IAD with United Airlines and you’ll enjoy a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be onboard a Boeing 757-300 or a Boeing 787-9 when flying United Airlines from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD). However, keep in mind that a different aircraft may be assigned depending on operational demands.

Changes are often free within 24 hours of booking, but your airline may add a charge after that time. For more details about altering your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to update your itinerary without extra charges, check the “Changes included” or “No cancel fee” filter when organizing your next getaway.