Cheap Flights from Seattle (SEA) to San Diego (SAN)

Compare Seattle to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

Book the best San Diego fare with no extra fees

Flight deals from Seattle to San Diego

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to San Diego? Find the lowest prices on one-way and round-trip tickets right here.

Don’t miss a great deal

Stay one step ahead. Find the best value travel with the latest deals, tips and news.

You can unsubscribe at any time. Read our Privacy Policy for more info.

Find the cheapest month to fly from Seattle to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to San Diego flights are currently cheapest in May.

Direct flights from Seattle to San Diego

Alternative Seattle to San Diego routes

Looking for the cheapest, fastest or easiest route from Seattle to San Diego? You could fly into the following airports instead.

Seattle to San Diego: Flight information

The things to know before you go.
Cheapest flight found$92
Cheapest month to flyMay
Average flight time2 hrs, 48 mins
Most popular airlineWestJet
Average flights per week1,440

Finding cheap flights from Seattle to San Diego: Frequently asked questions

There are 3 airports in San Diego: San Diego International, El Cajon and McClellan – Palomar.
The best price we found for a round-trip flight from Seattle to San Diego is $92. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 48 minutes is the average flight time from Seattle to San Diego.
WestJet, Alaska Airlines and Air Tahiti Nui fly direct from Seattle to San Diego.
There are 1,440 flights per week flying from Seattle to San Diego, as of May 2024.
The cheapest month to fly from Seattle to San Diego is usually May.
If you're flying from Seattle, the cheapest airport near San Diego is San Diego International – which is 2.5 miles away from the center of San Diego. We've found flights to this airport from $92.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to San Diego on Wednesday, May 29, 2024.
Yes – the average flight time is 2 hours and 48 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 63°F. August is typically the warmest month in San Diego, when it usually averages around 83°F. You can expect the least rain in June. The coldest month is December, with temperatures averaging 49°F. The rainiest month is February.
The cheapest airline that flies to San Diego is Spirit Airlines, and the cheapest airline that flies to El Cajon Airport is Alaska Airlines.

Travel more than 1,200 miles straight down the magnificent pacific coast from Seattle, and you’ll find yourself in the sunny city of San Diego. It’s a fairly epic journey, but if you get a direct flight you’ll spend less than three hours in the air.

Alaska, Delta, and Southwest Airlines all offer many weekly non-stop flights from Seattle-Tacoma International(SEA) to San Diego’s Lindbergh Field(SAN).

Making your way to Seattle-Tacoma International

In spite of being a big, busy, somewhat sprawling airport, Seattle-Tacoma is popular with travelers. Its layout somehow manages to make SEA feel far quieter than it actually is, and it’s easy to get around. There’s a central terminal which is connected to four concourses (A, B, C, and D) and there are also two satellite terminals, North and South. The whole airport is connected by a fast underground people mover. 

If you decide to drive to the airport, it’s important to remember that some of the buses to and from certain parking lots can add an additional 10 to 20 minutes to your trip. You also have a lot of alternate options for getting to SEA. There’s a Light Link Rail which runs every 15 minutes or less between 5:00 am and 1:00 am, and connects directly to the airport. A ticket will cost your $2.25. Several bus routes also link to the airport, and if you’d like to ride your bike, you’re in luck! SEA offers many secure bike parking options, indoors and outdoors, short and long term. You can even bring your bike with you: there’s a convenient workstation for those who need to assemble or disassemble their bikes.

Arriving in San Diego

The beauty and chilled-out vibe of San Diego have withstood the ups and downs of the tech invasion and residents still consider the city to be a haven. It gets an incredible amount of sunshine and beach culture rules supreme. From surfing and sunning yourself to sailing, whale-watching, and ecotourism, this is a place for people who love the water.

If you’re coming to get a good dose of vitamin D, avoid the months of May and June, when clouds frequently cover the city. September’s Santa Ana winds parch the area, elevating the risk of wildfires and driving people into air-conditioning. At any other time, San Diego is perfect for spending all the daylight hours outdoors. We recommend splashing out on a kayak or bike tour to let you see the city from new angles.

Skyscanner is devoted to finding you the cheapest flights from Seattle to San Diego. Just type in your dates of travel, and our free airfare comparison tool will do the rest.


More flight options

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.