$78 Find Cheap Flights from Seattle to San Diego - Compare and Save

Yes. Public transportation options from downtown Seattle to Seattle-Tacoma International Airport (SEA) include Link Light Rail and Sound Transit buses. Link Light Rail takes 38 minutes to reach SEA. Sound Transit buses drop off travelers on the Main Terminal's Lower Drive.

Yes, SEA offers children's play areas near Gates A1 and D25. They are recommended for children who weigh under 100 pounds and are less than 4 feet tall.

Yes, airlines at SEA provide wheelchair assistance from ticket counters and security checkpoints to the departure gates. SEA also has accessible amenities, including two sensory rooms for travelers who need a quiet space. One is at the SEA Underground A Station in the long hallway near the elevators. The other is on Level 3 above Gate C3 near the lookout.

Yes, Seattle-Tacoma International Airport (SEA) has pet-relief areas both inside and outside the terminals. Indoor locations are in Concourses A, C, D, S and N and in the International Arrivals Facility. Outdoor areas are just outside doors 33 and 26, near door 00/02 and near the parking garage. These areas include hand sanitizer, a paper towel dispenser and pet waste bags for cleanup.

Among airlines operating Seattle to San Diego flights:

• Alaska Airlines: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection
• American Airlines: offers free seat selection
• JetBlue: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

3 airlines operate flights between Seattle and San Diego. The airlines offering nonstop flights on this route include:

• Alaska Airlines
• Delta
• Southwest

Flights from Seattle to San Diego usually depart from Seattle/Tacoma Intl (SEA) and arrive at San Diego (SAN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• Delta: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Three cabin classes are available on flights from Seattle to San Diego:

• Economy Class
• Business Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $196 round-trip via Fresno Airterminal (FAT), compared to $283 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines and Southwest. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

One-stop flights from Seattle to San Diego most commonly connect through:

• Denver Intl (DEN) - 35% of one-stop connections
• San Francisco (SFO) - 16% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 11% of one-stop connections
• Sacramento Intl (SMF) - 10% of one-stop connections

Denver Intl (DEN) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 15% on the Seattle to San Diego route. Tuesday is the cheapest departure day at $256 round-trip on average, while Friday is the most expensive at $298, a difference of $42. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Seattle to San Diego route, 17% of flights were delayed in the past 3 months, with delays averaging 1 hour 59 minutes.

Morning is the busiest departure period on Seattle to San Diego flights, with 51% of flights leaving in that window. Evening departures account for 28%, afternoon flights for 21%, and night flights for 0%.

Some of the most popular sights in San Diego are Gaslamp Quarter, San Diego Convention Center and SeaWorld San Diego. These are among the most viewed places in San Diego on KAYAK.

These are the earliest and latest flight times available from Seattle to San Diego:

• Earliest: departs at 6:00 am and lands at 8:54 am
• Latest: departs at 9:08 pm and lands at 12:02 am.

The flight takes about 2h 54m.

Last-minute fares on this route - booked within 2 weeks of departure - run 110% above the route average of $281. Book 9 weeks before departure for the lowest fares.

A nonstop flight from Seattle to San Diego takes 2h 54m, covering 1,051 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $138 to $995. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Seattle to San Diego are currently lower than usual. Average one-way flight prices are about $93, which is 56% below the typical average for this route.

Delta is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Seattle to San Diego flights are:

• Delta: 87% on time
• Alaska Airlines: 82% on time
• Southwest: 56% on time

Overall, flights on this route are on time 83% of the time on average.

Night flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Los Angeles (LAX) gives the shortest average 1-stop total travel time at 4h 48m, compared with 4h 58m via Oakland (OAK) and 5h 06m via San Jose (SJC).

San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Round-trip flights from Seattle to San Diego range from $194 to $396, with an average of $281 over the past 12 months. Anything below $194 counts as a good deal.

Three airlines offer in-flight Wi-Fi on Seattle to San Diego flights:

• Alaska Airlines
• Delta
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.