Cheap flights from San Diego to Seattle

from as little as £218

7 nights in Seattle, departing San Diego on 10 / Jul / 2025 with Alaska Airlines (price found 45 hours ago)

Subject to availability, prices correct of the last 24 hours
Seattle

Cheap return flights from San Diego to Seattle

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The San Diego / Seattle route

All 1713 km of it

Cheap flight deals for this route

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Seattle flight facts

What you need to know

Alternative flights from the UK to Seattle

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Seattle

10 / Jul / 2025 is currently the lowest priced day of the year to fly the San Diego/Seattle route. There are around ten flights on any given week from the UK to Seattle and the cheapest month to fly right now is July.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

2 °C

AVG

12 °C

HIGHEST

25 °C

Rainfall (mm)
LOWEST

21 mm

AVG

81 mm

HIGHEST

170 mm

Key facts about Seattle

How to get cheap flights from San Diego to Seattle

Tips and advice from our flight experts

You’ve searched for flights from San Diego to Seattle. ten flights go to or via Seattle every week, and we've searched them all to make it easy for you to compare your flight options. On average, Alaska Airlines has the cheapest flights, so look out for them in your search results.

We scan thousands of airfares from hundreds of airlines across the globe. We've found that one airlines operate the 1713 km flight from San Diego to Seattle. Flights during peak season tend to be the most expensive – so if you want to go during that time, it's best to book early. Or you could try to get a last-minute flight deal.

Alaska Airlines are the most popular airlines for flying from San Diego to Seattle, so look out for their deals and offers. To find the best price, try searching by month. Or, if you want to bag a last-minute offer, keep an eye on Netflights to monitor the prices.

Flights from San Diego to Seattle usually take about 3 hrs 5 mins. Once you've selected your flight, you'll need to fill out your details to book. And don’t forget to look at Netflights’ hotels and car hire – you could save even more money on your trip when you book everything in one go.

Other popular destinations near Seattle

Where other people are flying to

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