LAX - SEA

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Everything you should know

Cheapest round-trip
$125
Typical prices: $172-$349
Frontier
Mon 12/3Wed 12/5
LAX - SEA • Non-stop
Cheapest non-stop
$125
Typical prices: $173-$350
Frontier
Wed 10/24Tue 11/6
LAX - SEA • Non-stop
Advice from real travelers
Frontier Economy Bundle adds a carry-on, seat choice, and no change fees.
Delta free Wi-Fi beats United's free messaging; Alaska speeds bags after landing.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with Alaska Airlines, Delta and others. Average duration is 2h 58m.
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 94% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $272 (round-trip)
Shortest trip • 4h 17m (one-way)
Insights
Insights
Start a new search
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We hope you love your trip to Seattle!

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

 

Cheap flights from Los Angeles to Seattle with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Sat, Oct 24 - Fri, Nov 6
Frontier Logo
3:35 pm - 6:45 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 10mnonstop
Frontier Logo
7:48 pm - 10:38 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 50mnonstop
$125Frontier
Thu, Dec 3 - Sat, Dec 5
Frontier Logo
5:47 pm - 8:47 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 00mnonstop
Frontier Logo
4:58 pm - 12:02 amSEA  Seattle/Tacoma Intl-LAX Los Angeles
7h 04m1 stop Denver Intl
$125Frontier
Sat, Nov 7 - Tue, Nov 17
Multiple Airlines Logo
3:24 pm - 6:33 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 09mnonstop
Multiple Airlines Logo
11:43 am - 6:15 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
6h 32m1 stop San Francisco
$128Multiple Airlines
Tue, Nov 10 - Sat, Nov 14
Multiple Airlines Logo
1:15 pm - 7:54 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
6h 39m1 stop San Francisco
Multiple Airlines Logo
7:48 pm - 10:38 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 50mnonstop
$128Multiple Airlines
Fri, Nov 27 - Mon, Nov 30
Delta Logo
7:05 am - 10:05 amLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 00mnonstop
Delta Logo
7:15 am - 10:10 amSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 55mnonstop
$137Delta
Thu, Dec 10 - Sun, Jan 3
Delta Logo
7:05 am - 10:02 amLAX  Los Angeles-SEA Seattle/Tacoma Intl
2h 57mnonstop
Delta Logo
10:35 am - 1:24 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 49mnonstop
$137Delta
Fri, Nov 6 - Sun, Nov 8
United Airlines Logo
4:30 pm - 7:37 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 07mnonstop
United Airlines Logo
4:39 pm - 7:21 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 42mnonstop
$138United Airlines
Thu, Oct 29 - Sun, Nov 8
United Airlines Logo
4:30 pm - 7:37 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
3h 07mnonstop
United Airlines Logo
4:39 pm - 7:21 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
2h 42mnonstop
$138United Airlines
Thu, Nov 12 - Sun, Nov 15
Southwest Logo
9:40 am - 1:55 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
4h 15m1 stop Oakland
Southwest Logo
6:25 pm - 11:30 pmSEA  Seattle/Tacoma Intl-LAX Los Angeles
5h 05m1 stop Phoenix Sky Harbor Intl
$142Southwest
Sat, Jan 23 - Wed, Jan 27
Southwest Logo
7:50 am - 12:30 pmLAX  Los Angeles-SEA Seattle/Tacoma Intl
4h 40m1 stop Las Vegas Harry Reid Intl
Southwest Logo
5:40 am - 9:30 amSEA  Seattle/Tacoma Intl-LAX Los Angeles
3h 50m1 stop Sacramento Intl
$142Southwest

Price, demand and travel trends for Los Angeles to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Los Angeles to Seattle?

Round-trip flights from Los Angeles to Seattle typically range from $172 to $349. The lowest price found in the past 5 days was $125, on Frontier.

What's the cheapest day of the week to fly from Los Angeles to Seattle?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Los Angeles to Seattle. It’s 6% cheaper than the average day, while Sunday is the most expensive, with prices 9% higher.

What’s the cheapest month to fly from Los Angeles to Seattle?

•March is the cheapest month to fly from Los Angeles to Seattle at $193 round-trip.
•June ($314) and July ($300) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 62% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Los Angeles to Seattle the cheapest?

Flights from Los Angeles to Seattle are cheapest 9 weeks before departure. Booking in this window typically costs about 54% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice for your flight from Los Angeles to Seattle

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier, Delta, United Airlines and LAX

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Key details for Los Angeles to Seattle flights

Low season

September

Cheapest flight

$64
Beat the crowds with an average 26% drop in travelers.
The most popular month to fly with an average 39% increase in travelers.
One-way flight from Los Angeles to Seattle

When to book flights from Los Angeles to Seattle

Are your dates flexible? Find out the best times to travel from Los Angeles to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Los Angeles to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Los Angeles to Seattle 
PaulFlew with Alaska Airlines-Mar 2025
Be patient. Get there early. Ignore the crazies in LAX.
TerrieFlew with Spirit Airlines-Oct 2024
Get there early just in case there’s traffic’s
SaraFlew with Spirit Airlines-Aug 2024
Pay extra for the carry on and we got to board 1st. I did not pay to sit together but when I checked in the day before we were all 3 together.

Your Los Angeles to Seattle flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Los Angeles to Seattle?

    These are the earliest and latest flight times available from Los Angeles to Seattle:

    • Earliest: departs at 6:00 am and lands at 8:58 am
    • Latest: departs at 9:24 pm and lands at 12:22 am.

    The flight takes about 2h 58m.

  • What cabin classes can I book on flights from Los Angeles to Seattle?

    Four cabin classes are available on flights from Los Angeles to Seattle:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Los Angeles to Seattle?

    A nonstop flight from Los Angeles to Seattle takes 2h 58m, covering 954 miles.

  • Do I need a passport to fly from Los Angeles to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Los Angeles to Seattle flight?

    Round-trip flights from Los Angeles to Seattle range from $172 to $349, with an average of $255 over the past 12 months. Anything below $172 counts as a good deal.

  • How expensive are last-minute Los Angeles to Seattle flights?

    Last-minute fares on this route (booked within two weeks of departure) run 53% above the $255 route average. Book 9 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Los Angeles to Seattle?

    On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $255 round-trip, compared to $272 via a layover through Phoenix Sky Harbor Intl (PHX).

  • How does on-time performance compare across airlines flying from Los Angeles to Seattle?

    United Airlines is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Los Angeles to Seattle flights are:

    • United Airlines: 94% on time
    • Alaska Airlines: 92% on time
    • Frontier: 91% on time

    Overall, flights on this route are punctual 91% of the time on average.

  • What is the standard checked-bag allowance on flights from Los Angeles to Seattle?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $28–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Los Angeles to Seattle?

    The Airbus A321neo family is used most often on this route, operated mainly by Frontier and Delta. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

  • How are flight departures from Los Angeles to Seattle spread across the day?

    Morning is the busiest departure period on Los Angeles to Seattle flights, with 38% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 29%, and night flights for 0%.

  • Have flight prices from Los Angeles to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $125 to $974. That means the highest observed fare was about 8x higher than the lowest one.

  • Which airlines offer Wi-Fi on Los Angeles to Seattle flights?

    Four airlines offer in-flight Wi-Fi on Los Angeles to Seattle flights:

    • Alaska Airlines
    • Delta
    • American Airlines
    • Hawaiian Airlines

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Los Angeles to Seattle looking right now?

    One-way fares from Los Angeles to Seattle are currently lower than usual. Average one-way flight prices are about $79, which is 58% below the typical average for this route.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Hertz

  • Which airports can I use when flying from Los Angeles to Seattle?

    Flights from Los Angeles to Seattle usually depart from Los Angeles (LAX) and arrive at Seattle/Tacoma Intl (SEA).

  • What time of day has the fewest delays on flights from Los Angeles to Seattle?

    Morning flights have the fewest delays on this route, while night departures tend to have the most.

  • At what point is a flight considered delayed from Los Angeles to Seattle?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Los Angeles to Seattle route, 9% of flights were delayed in the past 3 months, with delays averaging 2h 33m.

  • Which airports do connecting flights from Los Angeles to Seattle pass through?

    One-stop flights from Los Angeles to Seattle most commonly connect through:

    • Denver Intl (DEN) - 38% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 23% of one-stop connections
    • San Francisco (SFO) - 13% of one-stop connections
    • Salt Lake City (SLC) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from Los Angeles to Seattle?

    Yes. Flexible dates can save you up to 14% on flights from Los Angeles to Seattle. Thursday is the cheapest departure day at $241 round-trip on average, while Sunday is the most expensive at $279, a difference of $38.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Los Angeles to Seattle?

    5 airlines operate flights between Los Angeles and Seattle. The airlines offering nonstop flights on this route include:

    • Alaska Airlines
    • Delta
    • United Airlines
    • American Airlines
    • Frontier

  • How much time can I save by choosing a different layover airport from Los Angeles to Seattle?

    Flying via San Jose (SJC) gives the shortest average 1-stop total travel time at 4h 17m, compared with 4h 23m via Oakland (OAK) and 5h 02m via San Francisco (SFO).

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Los Angeles to Seattle flights?

    Among airlines operating Los Angeles to Seattle flights:

    • Frontier: offers free seat selection
    • Alaska Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Los Angeles to Seattle flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Frontier: a cabin bag and a checked bag in Economy Class
    • Alaska Airlines: a cabin bag and a checked bag in Economy Class
    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What is the best way to travel from Seattle–Tacoma International Airport to downtown Seattle?

    Seattle–Tacoma International Airport is located just under 15 miles from downtown Seattle. The quickest way to travel between these two locations is by taxi or rental car, and the trip takes approximately 25 minutes without any additional traffic. It is also possible to use the local train system, which takes just under 45 minutes.

  • Does Seattle–Tacoma International Airport have any pet relief areas?

    If you are traveling with either a pet or service animal, you will most likely need to take them to a relief area after your flight has landed. There are currently 2 relief areas that are located outside the Main Hall of Seattle–Tacoma International Airport, as well as 3 indoor relief areas that are distributed throughout the different departure terminals.

  • Can I store my luggage at Seattle–Tacoma International Airport?

    Interested in storing some of your luggage at Seattle–Tacoma International Airport? Stop by the baggage storage counter that is located in the main baggage claim. This counter offers both daily and hourly rates and can store as much luggage as you would like.

  • What is there to do at Los Angeles International Airport?

    Hoping to find a way to pass the time in Los Angeles International Airport before your flight takes off? There is a Flight Path Museum located in the Main Terminal and features several exhibits related to Southern California’s aviation history. Additionally, travelers can access an Observation Deck in the Departures Wing that allows them to watch the airport’s planes take off and land.

  • Can I take public transport to LAX?

    Yes, there is public transportation available from downtown Los Angeles to the Los Angeles International Airport (LAX) as a way to avoid the busy traffic or parking situation. The bus service is called LAX FlyAway and departs from the city’s Union Station. The trip is more or less 35 minutes long, and you can expect the fare to be about $10.

  • Where can I take my pets to relieve themselves at LAX Airport?

    Before departing out of Los Angeles International Airport (LAX) with your pet or service animal, locate one of the pet relief areas on site. Make your way to the closest relief station to your departure gate. There are ones by Gates 13, 21, 52B, and 73 in Terminals 1, 2, 5, and 7, respectively. There’s an area in the outdoor atriums of Terminals 3 and 6, and along the bridge to TBIT in Terminal 4.

  • How can I get from Seattle-Tacoma to the Pike Place Market?

    Pike Place Market is one of the iconic destinations of Downtown Seattle. Once you land at Seattle-Tacoma International Airport (SEA) it’s straightforward to go directly to Pike Place Market. Make your way to the Sea-Tac/Airport Light Rail Station and catch the 1-Line towards Northgate. This light rail takes about 45 minutes and leaves you just a couple of blocks away from the market.

  • Are there any smoking areas in Seattle-Tacoma (SEA)?

    The Seattle-Tacoma International Airport (SEA) is a smoke-free area. So, if you wish to smoke once you’ve landed at the airport, you must locate one of the designated smoking areas. They’re all outdoors. On the departures level, it’s on the north end of the drop-off area, and on the arrivals level, there’s one on each end. There’s also a designated smoking area outside Level 1 of the parking garage.

Your guide to booking Los Angeles to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Sunday. On this route, Thursday flights average $241, about $38 less than Sunday fares (14% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 54% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Los Angeles to Seattle trip for March. Fares historically average $193 round-trip in that month - typically $121 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with United Airlines. Over the past three months, 94% of United Airlines flights from Los Angeles to Seattle arrived on time, slightly above the route average of 91%. When flights on this route arrive late, they're delayed by an average of 2h 33m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.

    • Coast Gateway Hotel
    • Seattle Airport Marriott
    • Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport
  • Interested in booking direct flights from Los Angeles to Seattle? While there are several companies to choose from, Alaskan Airlines is a particularly popular choice due to its many flight options between these two destinations as well as its complimentary snacks and drinks, comfortable chairs, and outlets found at every seat.
  • If you plan on taking a substantial amount of luggage with you on your flight from Los Angeles to Seattle, consider booking with Southwest, as this company allows you to check up to two bags for free. However, it’s important to keep in mind that Southwest does not fly directly between Los Angeles International Airport and Seattle–Tacoma International Airport, so you will have to have a layover.
  • Traveling to Seattle with your family? Make sure to bring the kids to Seattle–Tacoma International Airport’s play area located next to Gate A in the Central Terminal. This play area features a variety of games and activities that are a convenient way for kids to burn some energy after a day of traveling.
  • Before you travel through Seattle–Tacoma International Airport, make sure to check the airport’s live music calendar on their website. A variety of local bands and artists are continually playing throughout the different terminals, and their performances are free for all travelers to enjoy.
  • If you book your ticket with American Airlines, Virgin Atlantic, or Delta Airlines, make sure to see if you are eligible for free access their private lounges in Los Angeles International Airport. These lounges provide travelers with complimentary snacks, TV, and a comfortable place to relax while waiting for a flight to take off.
  • In LAX you will find nursing pods near Gates 13, 21B, 45, and 64B respectively in Terminals 1, 2, 4, and 6. There is also a spot in Terminal 5 across from the food court, just past security in Terminal 7, and in Terminal 8 they’re by the restrooms.
  • LAX supports local artists and diversity, displaying their art around the terminals. Check out the pieces of this program if you have time to spare before your flight to Seattle. For instance, in Terminal 1 there is the Floating Lady IV and in Terminal 7, The Let Go.
  • Relax and decompress before your flight out of Los Angeles Airport boards. Visit one of the massage and relaxation areas around LAX Airport. For example, there’s the Be Relax in Terminal 1 across from Gate 11B.
  • You may find more routes or more affordable rates when booking flights from Los Angeles (LAX) to Seattle (SEA) with a layover instead of nonstop trips. In this case, look for the Spirit Airlines flights that stop in Las Vegas (LAS) or the United Airlines journeys stopping in San Francisco (SFO).
  • To get around Seattle-Tacoma International Airport (SEA) upon your arrival, use the SEA underground train. It’s free of charge and connects the different concourses. You’ll especially need it to get from the N and S Concourses since they are not connected to the main terminal by walkways.

Prefer to fly direct from Los Angeles to Seattle?

 
Find which airlines fly direct from Los Angeles Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Los Angeles to Seattle/Tacoma Intl

Monday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Tuesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Wednesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Thursday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Friday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Saturday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Sunday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Los Angeles

Monday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Tuesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Wednesday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Thursday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Friday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Saturday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

Sunday

Alaska Airlines,American Airlines,Delta, +2 more

Alaska Airlines,American Airlines, +3 more

See more direct flights

More options for your flight from Los Angeles to Seattle

Complete your trip to Seattle with a hotel stay or car rental