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

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Flight deals from San Diego to Seattle

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

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Find the cheapest month to fly from San Diego to Seattle

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

Direct flights from San Diego to Seattle

Alternative San Diego to Seattle routes

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

San Diego to Seattle: Flight information

The things to know before you go.
Cheapest flight found$114
Cheapest month to flyJune
Average flight time3 hrs, 3 mins
Most popular airlineAlaska Airlines
Average flights per week353

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

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Everett.
The best price we found for a round-trip flight from San Diego to Seattle is $114. 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.
3 hours and 3 minutes is the average flight time from San Diego to Seattle.
Alaska Airlines, WestJet and Delta fly direct from San Diego to Seattle.
There are 378 flights per week flying from San Diego to Seattle, as of May 2024.
The cheapest month to fly from San Diego to Seattle is usually June.
If you're flying from San Diego, the cheapest airport near Seattle is Seattle / Tacoma International – which is 12.1 miles away from the center of Seattle. We've found flights to this airport from $114.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Seattle on Saturday, June 1, 2024.
Yes – the average flight time is 3 hours and 3 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 Seattle 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 53°F. August is typically the warmest month in Seattle, when it usually averages around 73°F. You can expect the least rain in July. The coldest month is December, with temperatures averaging 33°F. The rainiest month is November.
The cheapest airline that flies to Seattle is Frontier Airlines, and the cheapest airline that flies to Seattle Boeing Fld Airport is Alaska Airlines.

San Diego to Seattle

Far down on California’s southern coastline is a city with prominent U.S. Naval operations, a very deep, dark blue harbor, and miles and miles of sun-soaked beaches. Welcome to San Diego, the second-largest city in the state.

Though not nearly as large as farther north Los Angeles, the region is known for its cultural and ethnic diversity. Since the turn of the century, San Diego has witnessed the rise of many companies in the biotechnology, healthcare, and wireless cellular technology fields. Names like Qualcomm, LG, Novatel, Pfizer, Merck, and Nventa Biopharmaceuticals all have headquarters or major offices in the city.

The destination is 1,063 miles directly to the North. Another popular, coastal seaport spot, non-stop flights from San Diego to Seattle can be boarded via United Airlines, American Airlines, Alaska Airlines, Continental Airlines, and Delta Air Lines. Expect your total gate-to-gate flight time to take approximately 2 hours and 47 minutes.

Information for your San Diego Departure

Operating the world’s second-busiest, single-use runway (first in the United States), San Diego International is a primary airport for residents living in Southern California. Again, while the airfield is trumped in size by much busier LAX, it does command an impressive annual passenger base of 19 million.

Interestingly, despite its considerable amount of flight traffic and the fact that it operates as a chief transport point for Southwest Airlines, the airfield is not a designated primary or secondary hub for any carrier. San Diego International offers direct routes to numerous international destinations in Mexico, Japan, the United Kingdom, and Canada; the airport’s latest development is “The Green Build,” a program launched to expand and upgrade Terminal 2 as a means of accommodating projected future growth.

What to Do After You Show Up in Seattle

Since The Emerald City is the official home of Starbucks, you may want to grab of coffee before exploring Seattle! The nature scene alone is a compelling enough reason to book an extended trip, as are a lively and upbeat arts and music scene.

The laid-back atmosphere, relaxing vibes, and magnificent views of Mother Nature are often regarded as Seattle’s high points. Before you head back home, be sure to pay a trip to Pike Place Market, Hing Hay Park, the Boeing Museum of Flight, and gorgeous Alki Beach!

A great way to grab an extra few meals in the city’s famous Chinatown district or strolling through the Woodland Park Zoo is by reserving cheap flights from San Diego to Seattlewith Skyscanner. Our online intellisearch tool is an airfare compare genius.


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