Cheap flights from Los Angeles to Seattle from $143

The month of March is, on average, the cheapest month to fly to Seattle from Los Angeles, with most prices found around $294. If you are unable to visit Seattle during the month of March, then departing from Los Angeles during the month May is also very affordable. Most momondo users find prices during this month for around $314.

The cheapest day to depart from Los Angeles to Seattle is on a Wednesday. Travellers who choose to depart for Seattle on a Wednesday will often find tickets for as low as $320. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Los Angeles to Seattle for around $512.

According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from Los Angeles to Seattle in the morning for as low as $341. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is at midday when prices are around $1,721.

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 $370 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 $292 on momondo.

There are 2 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 10% 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 146 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. Wednesday 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.

As of October 2026, 38 flights take off from Los Angeles and land in Seattle each day. The most common flight departure time for this route is 19:00, with 45% of daily flights taking off in the afternoon.

As of October 2026, there are 271 flights per week flying from Los Angeles to Seattle. The most common day of the week flights depart is Fri, with 40% of flights taking off on this day.