Cheap flights from Los Angeles to Seattle from £78

The cheapest month to fly to Seattle from Los Angeles is in March. Flight prices, which tend to average around £157, are often lower during this time because this is during the off-season. The month of May is another great option to travel to Seattle, with average flight prices from Los Angeles averaging around £162.

According to our data, Monday is the cheapest day to fly to Seattle from Los Angeles. The lowest ticket price found for a Monday departure recently was £361. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Tuesday is £729.

According to our data, the cheapest time of day to fly to Seattle is in the evening. momondo users have found flights departing from Los Angeles to Seattle in the evening for as low as £318. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £613.

Fly from Los Angeles to Seattle/Tacoma Intl for the best 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 £183 when searching weeks before you fly. 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 £144 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.

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 148 minutes.

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

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

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

The number of flights available between Los Angeles and Seattle is 87 per day as of June 2026. The most frequent departure time is 18:00, with 37% of daily flights leaving in the evening.

As of June 2026, 615 flights take off from Los Angeles and land in Seattle each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.