$49 Cheap Flights from Los Angeles (LAX) to Seattle (SEA)

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Find available prices by choosing your travel dates.

Cheap Flights from Los Angeles to Seattle (LAX-SEA)

Prices were available within the past 7 days and start at $49 for one-way flights and $98 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Spirit Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Alaska Airlines
American Airlines
Delta
Flights from Los Angeles (LAX) to Seattle (SEA)
Origin airport
Los Angeles Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$98
Distance
954 mi

Los Angeles to Seattle Flights

The cheapest times to fly from Los Angeles to Seattle

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 Seattle are during the month of May. You can find some of the cheapest flights from Los Angeles to Seattle with Expedia's search tool and vast selection of airlines.

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

Sunday is one of the best days to book for cheap flights from Los Angeles to Seattle: 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 Seattle

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $49 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 Seattle 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 Seattle 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 SEA?
Book a fare with Alaska Airlines and you’ll be in the air for around 2 hours and 46 minutes. This leading carrier has a direct flight that departs at 9:13PM from LAX and reaches Sea-Tac Airport at 11:59PM. Expedia has some amazing flight deals, so find out what’s on offer on this route today.
Is it cheaper to buy a plane ticket from LAX to SEA last minute?
Being a spontaneous soul is a wonderful way to travel, but it’s not always the wisest way to grab a cheap fare. It’s better to book your LAX to Sea-Tac Airport trip well ahead of time instead of leaving it to the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave your spontaneous side for when you’re discovering Sea-Tac Airport!
What airline has the least delays from LAX to Seattle - Tacoma Intl. Airport (SEA)?
If you don’t want to be stuck in the departure lounge — or worse, have your vacation ruined due to a flight delay — go with Delta Air Lines. Around 87% of its LAX to Sea-Tac Airport services get in on schedule. You can review your flight status before you even get to the airport through the free Expedia App. It also delivers real-time alerts about other vital info, such as last-minute gate changes and how to reach your hotel. Keep all the details in your pocket with this all-in-one travel companion.
What airports do you fly into for Seattle from Los Angeles?
From Los Angeles, you can connect to Seattle through Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI). It’s a good idea to check which airport is more convenient for you before you make a decision. If you opt for Seattle - Tacoma Intl. Airport (SEA), it’s around 12 mi south of the downtown area. Use the dough you save when booking your airfare with Expedia to enjoy the city’s awesome sights, such as Space Needle and Pike Place Market.
What are the most popular departure times for flights from LAX to Sea-Tac Airport?
The most popular departure times for trips from LAX to Seattle - Tacoma Intl. Airport (SEA) fall between 7:00 AM - 8:00 AM on Delta Air Lines. One helpful tip is to depart in the morning. The earlier you fly, the better your chances of a delay-free flight with lighter air traffic in the sky.
Can I change the date of my flight from LAX to SEA?
You can quickly make changes to your LAX to SEA flight by logging in to the Expedia Trips portal. But before you begin, browse the rules and conditions in your itinerary to learn what the carrier will allow you to do and if any charges apply. Some carriers charge a change fee per person, plus any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also browse our Customer Service portal to find the answers to your questions and to chat with our Virtual Agent.

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