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

You can find cheap one-way flights from AU$125 and cheap return flights AU$291 SEA to SAN with Expedia. One-way flights typically cost between AU$190 and AU$849 and return flights often range between AU$775 and AU$2,206. 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 SEA to SAN ticket fares go up or down.

If you're looking for the best time to find a deal, January is typically the cheapest month to fly from Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN). You can expect average return flight prices around AU$297 during this time. January often sees lower prices because it falls after the busy holiday travel season, when demand for flights tends to decrease. Other budget-friendly months to consider for this route include September and October.

There are 3 airlines offering direct flights from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN). Here are some of the top carriers:

* Delta operates 35 direct flights from Seattle - Tacoma Intl. to San Diego Intl. every week.
* Southwest Airlines operates 11 direct flights from Seattle - Tacoma Intl. to San Diego Intl. every week.
* American Airlines operates 7 direct flights from Seattle - Tacoma Intl. to San Diego Intl. every week.

American Airlines is one of the cheapest airlines offering nonstop return flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego Intl.), with tickets starting from around AU$298 for flights that can be booked for departure within the next year. Sun Country Airlines offers one of the cheapest connecting return flights on this route, with tickets starting from around AU$384. These prices are for economy/coach class per adult. 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.

To find a cheap flight from Seattle, WA (SEA) to San Diego, CA (SAN), 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.

The best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego 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. Alaska Airlines offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Diego, CA (SAN-San Diego 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.

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.

You'll find approximately 7 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN). For even more choices, look at flights that include layovers, as there are around 110 connecting flights per day. Some common connection points include San Francisco Intl. (SFO), Denver Intl. (DEN), and Portland Intl. (PDX).

The earliest flight from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) typically departs around 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 make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll find the most flights from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) on Thursdays, with around 124 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and Southwest Airlines. Thursdays offer notably more flight options compared to other days of the week, so if flexibility is key, this might be a good day to consider flying.

The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) 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 because you can get an early start on your day in San Diego.

A non-stop flight from Seattle - Tacoma Intl. (SEA) to San Diego Intl. (SAN) typically takes around 3 hours. This route covers a distance of approximately 1,691 kilometers. If you opt for a one-stop flight, your travel time will be longer, usually around 6 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.

Yes, you can fly business class or first class between Seattle - Tacoma Intl. (SEA) and San Diego Intl. (SAN).

Airlines that offer business class service on this route include:

* Alaska Airlines
* Frontier Airlines
* Delta
* American Airlines

First class cabins are available on:

* Alaska Airlines
* United
* Delta
* Hawaiian Airlines
* American Airlines

It's easy to earn miles on a Seattle, WA (SEA) to San Diego, CA (SAN) 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.

If you're planning to travel to San Diego from Seattle - Tacoma Intl. (SEA), you can fly directly into San Diego Intl. (SAN). Some flights may connect through major hubs like San Francisco Intl. (SFO), Denver Intl. (DEN), or Los Angeles Intl. (LAX) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Seattle, WA (SEA) to San Diego, CA (SAN) 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.

Securing a Seattle, WA (SEA) to San Diego, CA (SAN) 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.

If you booked your Seattle, WA (SEA) to San Diego, CA (SAN) 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.