$138 Cheap Alaska Airlines flights Los Angeles (LAX) to Washington (IAD)

View $138 flight on Wed, Sep 24, 2025Opens in a new window

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$138 Cheap Alaska Airlines flights Los Angeles (LAX) to Washington (IAD)

Prices were available within the past 7 days and start at $138 for one-way flights and $271 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep 16 - Wed, Sep 17
LAX
Los Angeles
IAD
Washington
$271 Roundtrip, found 12 hours ago
$271
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Tue, Sep 16 from Los Angeles to Washington, returning Wed, Sep 17, priced at $271 found 12 hours ago
Alaska Airlines
Tue, Nov 4 - Mon, Nov 10
LAX
Los Angeles
IAD
Washington
$279 Roundtrip, found 2 hours ago
$279
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Nov 4 from Los Angeles to Washington, returning Mon, Nov 10, priced at $279 found 2 hours ago
Alaska Airlines
Wed, Sep 10 - Thu, Sep 11
LAX
Los Angeles
IAD
Washington
$287 Roundtrip, just found
$287
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Sep 10 from Los Angeles to Washington, returning Thu, Sep 11, priced at $287 just found
Alaska Airlines
Tue, Oct 28 - Fri, Oct 31
LAX
Los Angeles
IAD
Washington
$292 Roundtrip, just found
$292
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Oct 28 from Los Angeles to Washington, returning Fri, Oct 31, priced at $292 just found
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
Popular airline
Alaska Airlines
Distance
2282 mi
Average flight time
8 hours 44 mins

Frequently asked questions

How much is an Alaska Airlines flight from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD)?
You can find cheap return Alaska Airlines flights from $271 from LAX to IAD by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $138 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.
What is the cheapest month to fly from LAX to IAD with Alaska Airlines?
January is one of the least expensive months to jet away to Washington with Alaska Airlines. You could also find fantastic deals on return and one-way fares in February.
What is the cheapest time to book flights from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD) with Alaska Airlines?
For cheap Alaska Airlines fares from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the price you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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 Alaska Airlines fly nonstop from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD)?
Simply enter your dates, click search and check the "Nonstop" filter on Expedia to browse any direct flights from LAX to IAD with Alaska Airlines or other airlines.
What is the earliest Alaska Airlines flight from LAX to IAD?
Browse Alaska Airlines's earliest flights from LAX to IAD by checking our "Early Morning" and "Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer 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 Alaska Airlines fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the primary Washington hub for Alaska Airlines flights from Los Angeles Intl. Airport (LAX).
Why fly with Alaska Airlines from LAX to IAD?
Offering a rewarding loyalty program and top-tier customer service, Alaska Airlines is the leading choice for many passengers flying from LAX to IAD. What's more, if you're a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future trips.*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 Alaska Airlines flight from Los Angeles Intl. Airport (LAX) to Washington Dulles Intl. Airport (IAD)?
Depending on your fare type, a fee generally applies if you modify or cancel your booking more than 24 hours after confirmation. To find flexible fares, select our "No cancel fee" or "Changes included" filter when looking for flights. For more information on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."
*Available to One Key members.