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

View AU$157 flight on Wed, 2 Sept 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$227 Return, found 4 days ago
AU$227
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$227 found 4 days ago
Delta
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$227 Return, found 4 days ago
AU$227
Return
found 4 days ago
Select Delta flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$227 found 4 days ago
Alaska Airlines
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$256 Return, found 4 days ago
AU$256
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$256 found 4 days ago
Alaska Airlines
Sat, 8 Aug - Tue, 11 Aug
SAN
San Diego
SEA
Seattle
AU$277 Return, found 5 days ago
AU$277
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 8 Aug from San Diego to Seattle, returning Tue, 11 Aug, priced at AU$277 found 5 days ago
Alaska Airlines
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$285 Return, found 4 days ago
AU$285
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$285 found 4 days ago
Alaska Airlines
Tue, 25 Aug - Tue, 1 Sept
SAN
San Diego
SEA
Seattle
AU$296 Return, found 5 days ago
AU$296
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 25 Aug from San Diego to Seattle, returning Tue, 1 Sept, priced at AU$296 found 5 days ago
Delta
Sat, 8 Aug - Tue, 11 Aug
SAN
San Diego
SEA
Seattle
AU$299 Return, found 5 days ago
AU$299
Return
found 5 days ago
Select Delta flight, departing Sat, 8 Aug from San Diego to Seattle, returning Tue, 11 Aug, priced at AU$299 found 5 days ago
Alaska Airlines
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$303 Return, found 4 days ago
AU$303
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$303 found 4 days ago
American Airlines
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$400 Return, found 4 days ago
AU$400
Return
found 4 days ago
Select American Airlines flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$400 found 4 days ago
United
Wed, 2 Sept - Wed, 9 Sept
SAN
San Diego
SEA
Seattle
AU$414 Return, found 4 days ago
AU$414
Return
found 4 days ago
Select United flight, departing Wed, 2 Sept from San Diego to Seattle, returning Wed, 9 Sept, priced at AU$414 found 4 days ago

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

April is typically the cheapest month to fly

From AU$139 - AU$294 per traveller.

Frequently asked questions

How much does a flight from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from AU$157 and cheap return flights from AU$227 SAN to SEA with Expedia. One-way flights typically cost between AU$218 and AU$1,404 and return flights often range between AU$424 and AU$1,454. 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 SAN to SEA ticket fares go up or down.
What is the cheapest month to fly from San Diego, CA (SAN) to Seattle, WA (SEA)?
The cheapest months to fly from San Diego, CA (SAN) to Seattle, WA (SEA) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 6 airlines offering direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA). Here are some of the top carriers:
  • Delta operates 34 direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) every week.
  • Qatar Airways operates 21 direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) every week.
  • Starlux Airlines operates 19 direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) every week.
  • Condor operates 14 direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) every week.
  • Southwest Airlines operates 11 direct flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) every week.
How do I find cheap flights from San Diego, CA (SAN) to Seattle, WA (SEA)?
To find a cheap flight from San Diego, CA (SAN) to Seattle, WA (SEA), 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 San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great 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 San Diego, CA (SAN) to Seattle, WA (SEA)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find approximately 7 nonstop flights per day from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choices, look at flights that include layovers, as there are around 102 connecting flights per day. Some common connection points include San Francisco Intl. (SFO), Harry Reid Intl. (LAS), and Sky Harbor Intl. (PHX).
What is the earliest flight from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 12:55 AM. This flight is usually operated by American Airlines. Keep in mind that this is a seasonal service, active only in June. An early departure like this can be great for maximizing your time in Seattle. 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 San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Friday, with around 140 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and United. Flight options are notably more on Fridays compared to other days of the week, offering you greater flexibility.
What are the most popular departure times for flights from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from San Diego Intl. (SAN) to Seattle - Tacoma Intl. (SEA) are in the early morning, from 6am to 9am. Many major carriers, including Alaska Airlines, Delta and Southwest Airlines, offer flights during this window. Many travellers prefer these times as it allows for an early start to their day in Seattle.
How long does it take to fly from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
When flying from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), you'll find that nonstop flights are the quickest option, typically taking around 3 hours 18 minutes. This route covers a distance of approximately 1,691 kilometers. If you opt for a flight with one stop, your travel time will generally be longer, averaging about 7 hours. Flights with two or more stops usually take even more time, around 12 hours 18 minutes. Keep in mind that actual flight durations can vary due to factors like wind patterns and air traffic.
Can you fly business or first class from San Diego, CA (SAN-San Diego Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You can fly business class or first class between SAN and SEA. You can fly business class with Frontier Airlines and Delta.First class cabins are available on American Airlines, Delta, Hawaiian Airlines, Alaska Airlines, and United.
How do I earn miles on a San Diego, CA (SAN) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a San Diego, CA (SAN) to Seattle, WA (SEA) 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 Seattle, WA (SEA) from San Diego, CA (SAN)?
If you're planning to travel to Seattle from San Diego Intl. (SAN), you can fly directly into Seattle - Tacoma Intl. (SEA). Some flights may connect through major hubs like Los Angeles Intl. (LAX), San Francisco Intl. (SFO), or Sky Harbor Intl. (PHX) before reaching Seattle. 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 San Diego, CA (SAN) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from San Diego, CA (SAN) to Seattle, WA (SEA) 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 San Diego, CA (SAN) to Seattle, WA (SEA) flight and hotel package?
Securing a San Diego, CA (SAN) to Seattle, WA (SEA) 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 San Diego, CA (SAN) to Seattle, WA (SEA)?
If you booked your San Diego, CA (SAN) to Seattle, WA (SEA) 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
San Diego Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
AU$226
Distance
1681 km
Average flight time
2 hours 58 mins

Book with confidence

Your quick guide to flights from San Diego to Seattle

Pick up great flights from San Diego to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from San Diego to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from San Diego to Seattle that take around hours.

Find cheap flights from San Diego to Seattle

From the great flight deals with prices currently ranging from AU$227 to AU$414, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from San Diego to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in September.

Reasons to book your flight from San Diego to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from San Diego to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from San Diego to Seattle

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