$90 Cheap Flights from Los Angeles (LAX) to Washington (IAD)

View $90 flight on Fri, Jul 4, 2025Opens in a new window

Popular airlines from Los Angeles Intl. (LAX) to Washington Dulles Intl. Airport (IAD)

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Find available prices by choosing your travel dates.

Cheap Flights from Los Angeles to Washington (LAX-IAD)

Prices were available within the past 7 days and start at $90 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Jul 30 - Tue, Aug 12
LAX
Los Angeles
IAD
Washington
$177 Roundtrip, found 2 days ago
$177
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Wed, Jul 30 from Los Angeles to Washington, returning Tue, Aug 12, priced at $177 found 2 days ago
United
Sun, May 25 - Thu, May 29
LAX
Los Angeles
IAD
Washington
$179 Roundtrip, found 1 hour ago
$179
Roundtrip
found 1 hour ago
Select United flight, departing Sun, May 25 from Los Angeles to Washington, returning Thu, May 29, priced at $179 found 1 hour ago
United
Thu, May 29 - Sat, Jun 7
LAX
Los Angeles
IAD
Washington
$184 Roundtrip, just found
$184
Roundtrip
just found
Select United flight, departing Thu, May 29 from Los Angeles to Washington, returning Sat, Jun 7, priced at $184 just found
United
Sun, May 25 - Thu, May 29
LAX
Los Angeles
IAD
Washington
$186 Roundtrip, found 1 hour ago
$186
Roundtrip
found 1 hour ago
Select United flight, departing Sun, May 25 from Los Angeles to Washington, returning Thu, May 29, priced at $186 found 1 hour ago
Alaska Airlines
Sun, May 25 - Sat, May 31
LAX
Los Angeles
IAD
Washington
$187 Roundtrip, just found
$187
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, May 25 from Los Angeles to Washington, returning Sat, May 31, priced at $187 just found
Frontier Airlines
Wed, May 21 - Sat, May 31
LAX
Los Angeles
IAD
Washington
$188 Roundtrip, just found
$188
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 21 from Los Angeles to Washington, returning Sat, May 31, priced at $188 just found
United
Wed, Jul 2 - Fri, Jul 4
LAX
Los Angeles
IAD
Washington
$189 Roundtrip, found 15 hours ago
$189
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Jul 2 from Los Angeles to Washington, returning Fri, Jul 4, priced at $189 found 15 hours ago
Frontier Airlines
Fri, May 30 - Sat, May 31
LAX
Los Angeles
IAD
Washington
$193 Roundtrip, found 1 hour ago
$193
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, May 30 from Los Angeles to Washington, returning Sat, May 31, priced at $193 found 1 hour ago
Frontier Airlines
Wed, May 21 - Sat, May 31
LAX
Los Angeles
IAD
Washington
$193 Roundtrip, just found
$193
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 21 from Los Angeles to Washington, returning Sat, May 31, priced at $193 just found
Southwest Airlines
Fri, May 9 - Fri, May 30
LAX
Los Angeles
IAD
Washington
$223 Roundtrip, found 5 days ago
$223
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Fri, May 9 from Los Angeles to Washington, returning Fri, May 30, priced at $223 found 5 days ago
Flights from Los Angeles (LAX) to Washington (IAD)
Origin airport
Los Angeles Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$177
Distance
2282 mi

Los Angeles to Washington Flights

The cheapest times to fly from Los Angeles to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Los Angeles to Washington are during the month of July. You can find some of the cheapest flights from Los Angeles to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Los Angeles to Washington

Sunday is one of the best days to book for cheap flights from Los Angeles to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Los Angeles to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Los Angeles to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $90 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Los Angeles to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Los Angeles to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How long does it take to fly from LAX to IAD?
Purchase your ticket with United Airlines and you can expect to be in the air for approximately 4 hours and 46 minutes. This popular carrier has a direct flight that jets off at 1:15PM from LAX and reaches Washington Dulles Intl. Airport (IAD) at 9:01PM. Expedia has unbeatable flight deals, so take a peek at what’s on offer on this route today.
Is it cheaper to buy a plane ticket from LAX to Washington Dulles Intl. Airport (IAD) last minute?
Booking your trip from LAX to Washington Dulles Intl. Airport (IAD) last minute could save you a pretty penny if you hit the jackpot and find a real bargain. However, tickets typically don’t come down in price as the date of departure nears. If you choose to wait, flights could also be booked solid or the best seats taken. If you’d rather not hedge your bets, book well in advance of the date you want to leave. In fact, you can find some of the biggest deals up to a year in advance. If your favorite airline hasn’t released its airfares yet, check back regularly as offers are constantly updated on Expedia.
What airline has the least delays from LAX to IAD?
Recording an on-time arrival score of 86%, United Airlines is the airline that’s more likely to get you from Los Angeles Intl. Airport (LAX) to IAD without any travel delays. Flight delays aren’t just an annoyance — they can also lead you to missing a connection that could ruin your entire vacation. You can prepare for delays by reviewing your flight status through the free Expedia App before you head for the airport. If you’re already there and the delay will significantly impact your plans, visit the customer service desk to find out your next steps.
What airports do you fly into for Washington from Los Angeles?
Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) are your options when setting off from Los Angeles to Washington. Roughly 25 mi west of the heart of Washington, Washington Dulles Intl. Airport (IAD) is the city’s major gateway. Consider things such as flight arrival and departure times and the distance to your hotel before picking your airport. White House and United States Capitol are two excellent attractions to add to your must-see list when you reach your destination.
What are the most popular departure times for flights from LAX to Washington Dulles Intl. Airport (IAD)?
The most popular departure times for flights from LAX to IAD fall between 8:00 AM - 9:00 AM on United Airlines. Our tip is to head out in the morning. The earlier you take off, the better your odds of a delay-free flight with lighter air traffic around.
Can I change the date of my flight from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD)?
Expedia makes it easy to make amendments to your LAX to Washington Dulles Intl. Airport (IAD) journey yourself. Access your details via the Expedia Trips portal and select “change flight.” Look for new flights and secure the one that fits your new plans. You’ll see an estimate of applicable flight change fees. You can also visit our Customer Service portal to connect with our Virtual Agent and get answers to all your questions.

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*Available to One Key members.