£84 Cheap Flights from Seattle (SEA) to San Diego (SAN)

View £84 flight on Tue, 9 Jun 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to San Diego Intl. Airport (SAN)

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

Prices were available within the past 7 days and start at £84 for one-way flights and £141 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 28 May - Wed, 10 Jun
SEA
Seattle
SAN
San Diego
£141 Return, found 18 hours ago
£141
Return
found 18 hours ago
Select Alaska Airlines flight, departing Thu, 28 May from Seattle to San Diego, returning Wed, 10 Jun, priced at £141 found 18 hours ago
Delta
Tue, 19 May - Sat, 23 May
SEA
Seattle
SAN
San Diego
£142 Return, found 2 days ago
£142
Return
found 2 days ago
Select Delta flight, departing Tue, 19 May from Seattle to San Diego, returning Sat, 23 May, priced at £142 found 2 days ago
Alaska Airlines
Thu, 28 May - Wed, 10 Jun
SEA
Seattle
SAN
San Diego
£156 Return, found 18 hours ago
£156
Return
found 18 hours ago
Select Alaska Airlines flight, departing Thu, 28 May from Seattle to San Diego, returning Wed, 10 Jun, priced at £156 found 18 hours ago
Alaska Airlines
Wed, 20 May - Sun, 24 May
SEA
Seattle
SAN
San Diego
£161 Return, found 4 days ago
£161
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Seattle to San Diego, returning Sun, 24 May, priced at £161 found 4 days ago
Alaska Airlines
Thu, 28 May - Wed, 10 Jun
SEA
Seattle
SAN
San Diego
£162 Return, found 18 hours ago
£162
Return
found 18 hours ago
Select Alaska Airlines flight, departing Thu, 28 May from Seattle to San Diego, returning Wed, 10 Jun, priced at £162 found 18 hours ago
Alaska Airlines
Thu, 28 May - Wed, 10 Jun
SEA
Seattle
SAN
San Diego
£171 Return, found 18 hours ago
£171
Return
found 18 hours ago
Select Alaska Airlines flight, departing Thu, 28 May from Seattle to San Diego, returning Wed, 10 Jun, priced at £171 found 18 hours ago
Alaska Airlines
Thu, 20 Aug - Wed, 26 Aug
SEA
Seattle
SAN
San Diego
£172 Return, found 16 hours ago
£172
Return
found 16 hours ago
Select Alaska Airlines flight, departing Thu, 20 Aug from Seattle to San Diego, returning Wed, 26 Aug, priced at £172 found 16 hours ago
United
Wed, 5 Aug - Tue, 11 Aug
SEA
Seattle
SAN
San Diego
£185 Return, found 4 days ago
£185
Return
found 4 days ago
Select United flight, departing Wed, 5 Aug from Seattle to San Diego, returning Tue, 11 Aug, priced at £185 found 4 days ago
American Airlines
Tue, 17 Nov - Wed, 18 Nov
SEA
Seattle
SAN
San Diego
£247 Return, found 2 days ago
£247
Return
found 2 days ago
Select American Airlines flight, departing Tue, 17 Nov from Seattle to San Diego, returning Wed, 18 Nov, priced at £247 found 2 days ago
JetBlue Airways
Thu, 28 May - Wed, 10 Jun
SEA
Seattle
SAN
San Diego
£460 Return, found 18 hours ago
£460
Return
found 18 hours ago
Select JetBlue Airways flight, departing Thu, 28 May from Seattle to San Diego, returning Wed, 10 Jun, priced at £460 found 18 hours ago

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McClellan-Palomar CLD. Cheapest option available. Average driving time to city centre is 38 minutes. Flights from £269
CLD
McClellan-Palomar
Cheapest
Average driving time to city centre38 min
Flights from £269

Find the cheapest month to fly from Seattle (SEA) to San Diego (SAN)

May is typically the cheapest month to fly

From £75 - £173 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) cost?
One-way flights typically cost between £184 and £959 and return flights often range between £317 and £1,591. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
January is typically the cheapest month to fly from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN), with average return fares of approximately £276. This is about 27% lower than the average price throughout the year. January often sees lower prices because it falls after the busy holiday travel season, when demand for flights decreases. Other cheap months to fly from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) include September and October.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Enter SEA to SAN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) will differ from traveller to traveller. If you like to fly early, DL offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. AS offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best time to fly from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) is in January. This month offers a great balance, as it's both one of the cheapest and most popular times to travel, meaning you'll find good fares and plenty of flight options. Based on booking data from the past year, you can expect return flights to be around £276.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
There are approximately 6 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN). For even more choice, look at flights that include layovers, as there are around 113 connecting flights per day. Some common connection points include San Francisco Intl. (SFO), Denver Intl. (DEN), and McCarran Intl. (LAS).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) typically departs at approximately 12:05 AM local time, operated by American Airlines. This is a seasonal service active in February and March. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) on a Friday, with around 119 flights available. This gives you plenty of options for your travel plans. Compared to other days, Friday has notably more flight options. Major airlines on this route include Alaska Airlines, United Airlines, and Southwest Airlines.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) are in the morning, between 6am and 9am. About 27% of passengers prefer this time. Many major carriers, including Delta Air Lines, Alaska Airlines and Southwest Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive in San Diego with plenty of time to settle in.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Flying nonstop from SEA to SAN takes around 3 hours, with the route covering approximately 1,051 miles. Flights with a layover typically take 3 hours 50 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Select the "Business class" and "First class" filters when looking for SEA to SAN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
A direct, return business class ticket from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) typically costs between £1392 - £2127. A non-stop, one-way business class flight is usually around £414 - £1054. You may also be able to find a cheaper business class journey between Seattle - Tacoma Intl. (SEA) to San Diego Intl. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Diego from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly directly into San Diego Intl. (SAN) to reach San Diego. Some flights may connect through major hubs like San Francisco Intl. (SFO), Denver Intl. (DEN), Los Angeles Intl. (LAX) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Return price
£141
Distance
1681 km
Average flight time
2 hours 52 mins

Book with confidence

Compare flights from Seattle to San Diego easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to San Diego. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Diego Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to San Diego Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN)

The easiest way to view the best deals on flights from Seattle to San Diego today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to San Diego Intl. start at just £141 and range up to £460.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and San Diego
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to San Diego flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to San Diego Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to San Diego easily and book with confidence

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*Available to Expedia members.