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$72 Cheap Flights from Seattle (SEA) to San Diego (SAN)

View $72 flight on Sat, Oct 17, 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 to San Diego (SEA-SAN)

Prices were available within the past 7 days and start at $72 for one-way flights and $151 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Oct 13 - Wed, Oct 21
SEA
Seattle
SAN
San Diego
$151 Roundtrip, just found
$151
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Oct 13 from Seattle to San Diego, returning Wed, Oct 21, priced at $151 just found
Southwest Airlines
Wed, Nov 4 - Thu, Nov 12
SEA
Seattle
SAN
San Diego
$156 Roundtrip, just found
$156
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Nov 4 from Seattle to San Diego, returning Thu, Nov 12, priced at $156 just found
Southwest Airlines
Thu, Nov 12 - Thu, Nov 19
SEA
Seattle
SAN
San Diego
$156 Roundtrip, found 2 hours ago
$156
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Thu, Nov 12 from Seattle to San Diego, returning Thu, Nov 19, priced at $156 found 2 hours ago
Bargain Flight
Tue, Sep 22 - Sat, Sep 26
SEA
Seattle
SAN
San Diego
$156 Roundtrip, found 4 hours ago
$156
Roundtrip
found 4 hours ago
Select Bargain Flight flight, departing Tue, Sep 22 from Seattle to San Diego, returning Sat, Sep 26, priced at $156 found 4 hours ago
Southwest Airlines
Sat, Oct 24 - Tue, Oct 27
SEA
Seattle
SAN
San Diego
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Oct 24 from Seattle to San Diego, returning Tue, Oct 27, priced at $157 just found
Delta
Sat, Oct 24 - Tue, Oct 27
SEA
Seattle
SAN
San Diego
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Delta flight, departing Sat, Oct 24 from Seattle to San Diego, returning Tue, Oct 27, priced at $157 just found
Frontier Airlines
Fri, Sep 11 - Tue, Sep 15
SEA
Seattle
SAN
San Diego
$158 Roundtrip, just found
$158
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Sep 11 from Seattle to San Diego, returning Tue, Sep 15, priced at $158 just found
Alaska Airlines
Tue, Nov 10 - Tue, Nov 17
SEA
Seattle
SAN
San Diego
$159 Roundtrip, found 2 hours ago
$159
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Nov 10 from Seattle to San Diego, returning Tue, Nov 17, priced at $159 found 2 hours ago
Southwest Airlines
Tue, Oct 13 - Wed, Oct 21
SEA
Seattle
SAN
San Diego
$161 Roundtrip, just found
$161
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Oct 13 from Seattle to San Diego, returning Wed, Oct 21, priced at $161 just found
Alaska Airlines
Tue, Oct 13 - Tue, Oct 20
SEA
Seattle
SAN
San Diego
$161 Roundtrip, found 2 hours ago
$161
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Oct 13 from Seattle to San Diego, returning Tue, Oct 20, priced at $161 found 2 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 General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $643
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $643
Select flight to McClellan-Palomar CLD. Cheapest option available. Average driving time to city center is 38 minutes. Flights from $354
CLD
McClellan-Palomar
Cheapest
Average driving time to city center38 min
Flights from $354

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

October is typically the cheapest month to fly

From $117 - $157 per traveler.

What you need to know for your flight from Seattle - Tacoma Intl. to San Diego Intl.

Seattle (SEA) to San Diego (SAN) at a glance

Travel from Seattle (SEA) to San Diego (SAN) with a range of airline choices on this domestic short-haul route. You can compare flights from both full-service and low-cost carriers to find an itinerary that suits your budget and schedule. With weekly flights available, you can easily set price alerts to catch the best deals as you plan your visit to explore San Diego's renowned attractions and neighborhoods. Discover essential information for your journey from Seattle-Tacoma International Airport to San Diego International Airport.

  • Fastest flight duration: around 2h 45m non-stop
  • Route distance: roughly 1,000 miles (1,610 km)
  • Flights per week: around 90+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $60–$350, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to San Diego International Airport (SAN)

According to recent traveler bookings, these are the top airlines favored for flights from Seattle to San Diego, particularly for non-stop and one-stop options. Popular layover locations include Sacramento International Airport (SMF, about a 1h 15m layover), Harry Reid International Airport (LAS, approximately 1h 15m layover), and Norman Y. Mineta San Jose International Airport (SJC, roughly 1h 30m layover). This variety allows you to customize your journey by considering price, total travel time, and cabin class to secure the ideal itinerary.

  • Alaska Airlines: This full-service airline provides both non-stop and one-stop options, with one-way ticket prices generally between $80 and $365. It represents around 51% of departures for this route, taking about 2 hours and 45 minutes for a direct flight.
  • Delta: As a full-service airline, Delta offers non-stop flights with one-way fares typically ranging from $60 to $350. It accounts for about 33% of flights on this route, with a total travel time of approximately 2 hours and 45 minutes.
  • Southwest Airlines: Known as a low-cost carrier, Southwest provides both non-stop and one-stop services, with one-way fares usually between $60 and $350. It makes up roughly 9% of departures, featuring a typical one-stop journey of 3 hours and 45 minutes in the air, totaling around 5 hours and 15 minutes.
  • Frontier Airlines: This low-cost carrier specializes in one-stop flights, offering one-way fares from $65 to $230. It covers about 3% of departures, with an in-flight duration of 3 hours and 45 minutes, leading to an overall journey time of approximately 5 hours and 15 minutes, including a layover.
  • Hawaiian Airlines: A full-service airline, Hawaiian Airlines offers non-stop flights at one-way fares generally between $85 and $315. It constitutes around 2% of departures on this route, with a total travel duration of about 2 hours and 45 minutes.

Travelers flying from Seattle to San Diego have the option to upgrade their flights. Delta provides first class and premium economy seating, while Alaska Airlines features both first class and business class service.

Best time to fly from Seattle (SEA) to San Diego (SAN)

The most popular months for travelers flying from Seattle to San Diego are February, March, and April, when peak temperatures in San Diego reach up to 60.6°F in April. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 72°F. For better deals, January usually offers the lowest average one-way fare around $149. Flight availability peaks in December, with approximately 115 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 74 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $149, roughly 17% cheaper than the yearly average.
  • Another budget-friendly time to fly: May typically offers an average one-way fare of around $157.
  • Most flight options: December has the highest number of flights from Seattle to San Diego, with approximately 115 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January57.4°F (14.1°C)Average74$149
February56.8°F (13.8°C)High83$187
March58.1°F (14.5°C)High87$165
April60.6°F (15.9°C)High102$198
May62.6°F (17.0°C)Average90$157
June66.4°F (19.1°C)Average88$171
July70.5°F (21.4°C)Average105$193
August72.3°F (22.4°C)Average103$174
September72.0°F (22.2°C)Low87$173
October68.2°F (20.1°C)Low92$190
November62.6°F (17.0°C)Low91$199
December57.4°F (14.1°C)Average115$210

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Seattle (SEA) to San Diego (SAN)

  • Seattle to Carlsbad (SEA-CLD): McClellan-Palomar Airport (CLD) is located approximately 28 miles from San Diego International Airport (SAN). One-way economy tickets for this route generally fall between $100 and $405, influenced by the time of year and how early you book. Most travelers will find one-stop options with connections primarily through Sky Harbor International Airport (PHX). American Airlines is the leading carrier for this route, and first-class service is also offered.

How to find the best prices for flights from Seattle (SEA) to San Diego (SAN)

Getting some of the best deals on flights from Seattle to San Diego is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which aligns with when most travelers make their reservations. Morning departures from 5 am to 12 pm tend to be less expensive and are also the most popular flight times. Additionally, flying on Saturday generally offers lower prices, while Friday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find San Diego hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Diego International Airport from Seattle - Tacoma International Airport

San Diego welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach San Diego efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Diego, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from San Diego International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Diego International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Diego International Airport, the Seaport, a seaport, is located just about 0.1 miles away on foot, while Middletown Station, a metro station, is approximately 2.3 miles from the airport by car. For those looking to embark on a cruise, the B Street Cruise Ship Terminal, also reachable by car, is situated around 3 miles away.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) cost?
You can find cheap one-way flights from $72 and cheap return flights from $151 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) with Expedia. One-way flights typically cost between $104 and $794, and return flights often range between $216 and $3006. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
January is the cheapest month to fly from Seattle, WA (SEA) to San Diego, CA (SAN), with average return fares around $199. This is about 27% lower than the average price throughout the year, as demand typically decreases after the holiday season. Other economical months to consider are September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
3 airlines operate nonstop service from SEA to SAN:

  • Delta operates around 35 direct flights from SEA to SAN every week
  • Hawaiian Airlines operates around 42 direct flights from SEA to SAN every week
  • Japan Airlines operates around 14 direct flights from SEA to SAN every week

What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
American Airlines is one of the cheapest airlines offering nonstop flights from Seattle (SEA) to San Diego (SAN), with round-trip tickets starting from around $358. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
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) to San Diego, CA (SAN) 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, WN typically offers the lowest fares. Alaska Airlines offers the most daily flights from Seattle to San Diego, 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best time to fly from Seattle (SEA) to San Diego (SAN) is typically in January or September. During these months, you can find return flights at around $199, making it a budget-friendly option. January is quieter after the holiday rush, while September offers pleasant weather and fewer crowds, giving you a great travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
You can find approximately 6 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN). For more options, look at flights that include layovers.
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 International Airport (SEA) to San Diego International Airport (SAN) typically departs at around 12:05 AM, operated by American Airlines. An early departure like this allows you to make the most of your day in San Diego. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 (SEA) to San Diego (SAN) are from 6am to 9am. About 25% of passengers prefer this time window. Southwest Airlines, Delta, and Alaska Airlines offer flights during this window. Many travelers prefer this timing because it allows for a full day of fun in San Diego upon arrival.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.)?
A nonstop flight from SEA to SAN typically takes around 2 hours 50 minutes, covering approximately 1,051 miles. Connecting flights on this route usually add 4 hours to your travel time. 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.)?
Business class seats are offered on the SEA to SAN route with JetBlue Airways.First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines
  • Hawaiian Airlines

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 (SEA) to San Diego (SAN) typically costs between $831 - $1,304. A non-stop, one-way business class flight is usually around $387 - $586. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
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 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.) San Diego Vacation Packages 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, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$150
Distance
1051 mi
Average flight time
2 hours 51 mins

Book with confidence

Seattle to San Diego Flights

The cheapest times to fly from Seattle to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to San Diego are during the month of October. You can find some of the cheapest flights from Seattle to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to San Diego

Sunday is one of the best days to book for cheap flights from Seattle to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to San Diego in 2026. You can also book with separate airlines for your outbound and return journeys, from $72 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to San Diego Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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