Cheap flights from San Diego to Seattle from R1 296

The cheapest month to fly to Seattle from San Diego is in October. Flight prices, which tend to average around R3 264, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of R3 264.

Fly from San Diego to Seattle/Tacoma Intl for the best San Diego - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around R4 131 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 San Diego for as low as R3 510 on momondo.

There is only 1 cabin class available to choose from on San Diego 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 San Diego and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 157 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

As of November 2026, 14 flights take off from San Diego and land in Seattle each day. The most common flight departure time for this route is 11:00, with 43% of daily flights taking off at midday.

As of November 2026, 99 flights take off from San Diego and land in Seattle each week. The most common flight departure day for this route is Wed, with 31% of weekly flights taking off on this day.