Cheap flights from Los Angeles to Seattle from $63

In general, March is the cheapest month to fly from Los Angeles to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $204. If you don’t want to visit Seattle in March, then you should wait until May to fly from Los Angeles, when ticket prices are also cheap, with an average price of $218.

On average, the least expensive day to fly to Seattle from Los Angeles is on a Thursday. momondo users have found tickets for Thursday departures for as low as $291. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Los Angeles because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $389.

Flying to Seattle from Los Angeles in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $270 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $358. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Los Angeles Los Angeles to Seattle/Tacoma Intl for the best Los Angeles Los Angeles - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Los Angeles when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $255 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Los Angeles for as low as $200 on momondo.

There are 4 cabin classes available to choose from on Los Angeles to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Alaska Airlines, Delta, and Southwest are the most popular carriers operating from Los Angeles Los Angeles to Seattle/Tacoma Intl

Alaska Airlines, Frontier and Delta are the top three most popular airlines that fly to Seattle from Los Angeles according to our data. Alaska Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Los Angeles and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

As of September 2026, there are 72 flights per day flying from Los Angeles to Seattle. The most common time of day flights depart is 12:00PM, with 47% of flights taking off in the afternoon.

As of September 2026, there are 505 flights per week flying from Los Angeles to Seattle. The most common day of the week flights depart is Thu, with 22% of flights taking off on this day.