Compare Cheap Flights from San Diego to Seattle
Search, Compare and Book
Why Packed Bag?
Search The Most Trusted Sites
Lowest Fares Guaranteed
24/7 Support
Round Trip Flights from San Diego to Seattle
Last updated on Thursday 01/29/2026 at 05:00 AM, the fares mentioned above are for flight tickets and inclusive of fuel surcharges, service fee and taxes. Based on historical data, these fares are subject to change without prior notice and cannot be guaranteed at the time of booking. Kindly go through our terms and conditions before booking.
Book San Diego To Seattle Flights
The Emerald City, Seattle is everything, from green lush mountains to beaches, or a metropolitan. The stunning landscape is a major highlight of Seattle that offers a breathtaking view of towering Mount Rainier, the serene waters of Puget Sound, and some unseen wildlife. If nature has bestowed Seattle with the best wonders, the city is also influenced by technology. Home to global giants like Microsoft and Amazon, today Seattle has become a major hub for expats from all over the world.
What does Seattle have for travelers? Well, this is a city of cultural diversity, which means you will find everything from music, art and other history. Seattle's Museum of Pop Culture is one of the most popular attractions that is known for its iconic architecture and interactive exhibits. The interiors are impressive featuring one of the largest indoor LED screens in the world. This reflects the fusion of modernity, innovation, and art. You can expect to see Science Fiction and Fantasy, Game Revolution, a collection of great bands of all time, movies, and more.
Seattle is simply charming and to experience it, Pike Place Market is the best place. You can enjoy fresh seafood, shop from the locals, and even taste the best food in the city. The street along the market is lined with the best cafes and restaurants offering authentic American and some international cuisines. And as the sun sets, the city switches to its fun mode with the best nightlife. There are endless clubs to eat, drink, and groove. There is a reason why Seattle is called a party town.
So if you are looking for one reason to visit Seattle, you will find many. June to August is the peak time to travel as the city experiences pleasant outdoors. However, expect higher fares for flights from San Diego to Seattle as more travelers prefer traveling during summer. If you are someone who prefers budget travel, September to January is the time. Look for cheap flights from San Diego International Airport (SAN) to Seattle–Tacoma International Airport (SEA) book with Packedbag. We offer great deals and discounts on all one-way and round-trip flights. You can also choose your preferred airline from Alaska, Delta, Spirit, or United Airways.
For more information, you can call us anytime. We have a team of travel experts who can assist you with cheap flight booking, Seattle flight deals, and more. Call us now to book.
Finding Cheap Flights From San Diego To Seattle : Frequently Asked Questions
-
How much are round-trip flights from San Diego to Seattle?
Average cost of a round-trip flight from San Diego to Seattle is around $308.
-
Which upcoming date is cheapest to fly from San Diego to Seattle?
In the next 90 days, flights from San Diego to Seattle on will be the cheapest on March 03, 2026, April 15, 2026, and April 15, 2026.
-
What?s the cheapest day of the week to fly from San Diego to Seattle?
On an average, flights from San Diego to Seattle tend to be cheapest on Wednesday.
-
Which airlines offers the cheapest fares from San Diego to Seattle?
At the moment, HAWAIIAN AIRLINES and ALASKA AIRLINES offer the cheapest flights from San Diego to Seattle.
-
When is the peak season for traveling from San Diego to Seattle?
February to April is the peak season to travel from San Diego to Seattle.
-
Cheapest Months to fly to Seattle
The cheapest months to visit Seattle are from March through May.
* The mentioned flight facts are based on the last 3 months' data. Information regarding the highest and lowest booking months is based on the last 12 months' data.
Major Carriers Operating Flights From San Diego To Seattle
UNITED AIRLINES
$181
$378
ALASKA AIRLINES
$97
$270
HAWAIIAN AIRLINES
$96
$239
Low Cost Carriers Operating Flights From San Diego To Seattle
HAWAIIAN AIRLINES
$96
$239
ALASKA AIRLINES
$97
$270
SOUTHWEST AIRLINES
$107
$237
Inspiration to Escape the Mundane
Check out exciting travel stories, travel guides and tips to inspire your next great adventure.
-
Dec 17, 2025Tips to Plan for Winter Flight Delays
Tips to Plan for Winter Flight Delays
-
Aug 26, 2025JetBlue Expands Service at Fort Lauderdale Airport with New Routes
JetBlue Expands Service at Fort Lauderdale Airport with New Routes
-
Aug 13, 2025Book Smart: Airline Secrets to Score the Lowest Airfares
Book Smart: Airline Secrets to Score the Lowest Airfares
-
Jul 30, 2025Understanding Airline Policies ? All That You Wanted to Know
Understanding Airline Policies ? All That You Wanted to Know