Find Cheapest Airlines Flying from Los Angeles to Seattle

Choose from 5 carriers that fly from Los Angeles to Seattle, including Alaska Airlines, Delta Air Lines, and United Airlines. Enjoy the cheapest tickets on this route with Frontier Airlines.
Alaska Airlines logo Alaska Airlines
Delta Air Lines logo Delta Air Lines
United Airlines logo United Airlines
Frontier Airlines logo Frontier Airlines
American Airlines logo American Airlines
Airlines are determined based on actual purchased flight tickets from Los Angeles to Seattle according to previous 12 months data from Trip.com.

Explore the cheapest flights from Los Angeles to Seattle in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at AU$ 43, and round-trip direct tickets start at AU$ 81.

Displayed flight fares from Los Angeles to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Los Angeles to Seattle Flight Details

The distance between Los Angeles and Seattle is approximately 1,538km. It takes around 3 hours 3 minutes on average to fly from Los Angeles to Seattle. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight priceAU$ 43
Cheapest return ticket priceAU$ 81
Off-season for travelOctober
Peak season for travelJuly
Flight distance1,538km
Average flight time3 hours 3 minutes
Popular airlineAlaska Airlines
Flight statistics for the Los Angeles–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Los Angeles to Seattle

What is the cheapest month for one-way flights from Los Angeles to Seattle?

Average price of one-way flights from Los Angeles to Seattle purchased by Trip.com users by month over the past 12 months.

According to Trip.com's data, the cheapest month for flights from Los Angeles to Seattle is Feb, with an average price of AU$ 182. Conversely, the most expensive month is typically Nov, with an average price of up to AU$ 298.

AU$ 298
AU$ 240
AU$ 182
AU$ 124
  • AU$ 182
    Feb
  • AU$ 182
    Mar
  • AU$ 242
    Apr
  • AU$ 204
    May
  • AU$ 248
    Jun
  • AU$ 249
    Jul
  • AU$ 273
    Aug
  • AU$ 261
    Sep
  • AU$ 272
    Oct
  • AU$ 298
    Nov
  • AU$ 280
    Dec
  • AU$ 270
    Jan

What is the cheapest month for round-trip flights from Los Angeles to Seattle?

Average price of round-trip flights from Los Angeles to Seattle purchased by Trip.com users by month over the past 12 months.

According to historical data from Trip.com, the lowest prices for flights from Los Angeles to Seattle are found during Apr, with an average price of AU$ 312. Conversely, the highest prices are found during Feb, with an average price of up to AU$ 628.

AU$ 628
AU$ 470
AU$ 312
AU$ 154
    Cheapest
  • AU$ 628
    Feb
  • AU$ 390
    Mar
  • AU$ 312
    Apr
  • AU$ 352
    May
  • AU$ 434
    Jun
  • AU$ 468
    Jul
  • AU$ 366
    Aug
  • AU$ 479
    Sep
  • AU$ 384
    Oct
  • AU$ 626
    Nov
  • AU$ 527
    Dec
  • AU$ 340
    Jan

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

Data is based on the average flight price for each day of the week from Los Angeles to Seattle on Trip.com over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to fly from Los Angeles to Seattle is Sat, with average prices lower than on other days. Avoid Sun, as prices are usually highest then.

AU$ 258
AU$ 241
AU$ 223
AU$ 206
    Cheapest
  • AU$ 257
    Mon
  • AU$ 251
    Tue
  • AU$ 230
    Wed
  • AU$ 224
    Thu
  • AU$ 243
    Fri
  • AU$ 223
    Sat
  • AU$ 258
    Sun

Flight FAQs

  • Which airlines offer the cheapest flights from Los Angeles (LAX) to Seattle (SEA)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as AU$ 43 on Cheapest nonstop routes (e.g. LAX to SEA on Fri, Mar 27), while Frontier Airlines offers Cheapest nonstop round-trips from AU$ 81 departing on Thu, Mar 19 and returning on Tue, Mar 24.
  • At the moment, you can catch a direct flight from Los Angeles to Seattle with the following airlines, including: Alaska Airlines Delta Air Lines United Airlines Frontier Airlines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 3 hours 3 minutes to fly from Los Angeles (LAX) to Seattle (SEA).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Los Angeles to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 131 flight per week flying from Los Angeles to Seattle. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL2980 (07:26)
  • To find best deals on flights from Los Angeles to Seattle, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Mar 27, with one-way flights priced at just AU$ 43.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Los Angeles to Seattle is October, when demand for travel is lower.
  • After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Los Angeles to Seattle on February 24, 2026 with Frontier Airlines, with prices starting at AU$ 29.
  • You can land at any one of the following hubs in Seattle, with Los Angeles International Airport to Seattle-Tacoma International Airport (LAX-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air - Lake Union (LKE) Seattle-Tacoma International Airport (SEA).
  • The time difference between Seattle and Los Angeles is 0h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from Los Angeles toSeattle

Which airlines offer the cheapest nonstop flights from Los Angeles to Seattle?

Data is based on the average price of all nonstop flights from Los Angeles to Seattle on Trip.com in the past 12 months.

Based on Trip.com data from the past 12 months, Frontier Airlines offers the cheapest nonstop flights from Los Angeles to Seattle, with an average price of AU$ 159.

AU$ 98
AU$ 159
AU$ 221
AU$ 283
AU$ 344
Frontier Airlines
AU$ 159
Frontier Airlines
Hawaiian Airlines
AU$ 280
Hawaiian Airlines
Alaska Airlines
AU$ 318
Alaska Airlines
Delta Air Lines
AU$ 318
Delta Air Lines
American Airlines
AU$ 318
American Airlines
United Airlines
AU$ 344
United Airlines

Which airlines operate the most flights from Los Angeles to Seattle?

Data is based on the number of flights from Los Angeles to Seattle operated by each airline on Trip.com in the past month.

Based on Trip.com data from the past month, Alaska Airlines operates the most flights from Los Angeles to Seattle, with 80 flight per week.

49
59
70
80
Alaska Airlines
80
Alaska Airlines
Hawaiian Airlines
80
Hawaiian Airlines
Air Tahiti Nui
73
Air Tahiti Nui
Qatar Airways
72
Qatar Airways
Korean Air
69
Korean Air
Delta Air Lines
59
Delta Air Lines

How many flights are there each day from Los Angeles to Seattle?

The data is based on the flight numbers for each day of the week from Los Angeles to Seattle within the Trip.com database over the past month.

Based on Trip.com data from the past month, the most flights from Los Angeles to Seattle depart on Friday, and the fewest flights depart on Tuesday.

562
483
404
325
Highest
467
Mon
404
Tue
446
Wed
488
Thu
562
Fri
491
Sat
517
Sun