Cheap Flights from Seattle to Los Angeles from US$21

Frequently Asked Questions

• What are the cheapest flights from Seattle to Los Angeles (SEA-LAX)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$21 on Cheapest nonstop routes (e.g. SEA to LAX on Tue, Nov 17), while Frontier Airlines offers Cheapest nonstop round-trips from US$39 departing on Sat, Nov 7 and returning on Wed, Nov 11.

• Which airlines offer direct flights from Seattle to Los Angeles?

  At the moment, you can catch a nonstop flight from Seattle to Los Angeles with the following airlines, including: Frontier Airlines Alaska Airlines Delta Air Lines United Airlines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

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

  It takes about 2 hours 52 minutes to fly from Seattle to Los Angeles.

• When is the best time to book flights from Seattle to Los Angeles?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Los Angeles 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.

• How many flights are there per week from Seattle to Los Angeles?

  Based on Trip.com data in the past 4 weeks, there is 150 flight per week flying from Seattle to Los Angeles. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS505 (06:24) United Airlines: S/M/T/W/T/F/S -- UA6053 (06:42)

• How can I find the best deals on flights from Seattle to Los Angeles?

  To find best deals on flights from Seattle to Los Angeles, 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 Tue, Nov 17, with one-way flights priced at just US$21.
  · 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 Los Angeles travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Seattle (SEA) to Los Angeles (LAX) the cheapest?

  The cheapest months to fly from Seattle to Los Angeles is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Seattle to Los Angeles on?

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Seattle to Los Angeles on October 31, 2026 with Frontier Airlines, with prices starting at US$20.

• Which airports fly into Los Angeles from Seattle?

  You can land at any one of the following hubs in Los Angeles: Los Angeles International Airport (LAX), Ontario International Airport (ONT), and Van Nuys Airport (VNY). Flying from Seattle-Tacoma International Airport to Los Angeles International Airport (SEA-LAX) is by far the most common option on this route.

• Is there any time difference between Seattle and Los Angeles?

  The time difference between Los Angeles and Seattle is 0m.

• How do I change or cancel my ticket from Seattle to Los Angeles?

  Tickets can only be changed or canceled 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.

• What is the average cost of a one-way flight from Seattle to Los Angeles?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Los Angeles is US$168. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Seattle to Los Angeles?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Seattle to Los Angeles is US$258. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Seattle to Los Angeles on Trip.com?

  Enter Seattle and Los Angeles, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Seattle to Los Angeles route?

  Frontier Airlinesare the most popular budget airlines flying from Seattle to Los Angeles. Check baggage, seat and payment fees before comparing the final price.