American Airlines Cheap Flights from Seattle to San Diego: AA SEA→SAN

View HK$1,013 flight on Wed, 3 Dec 2025Opens in a new window
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Prices were available within the past 7 days and start at HK$1,013 for one-way flights and HK$1,639 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 4 Dec - Sun, 7 Dec
SEA
Seattle
SAN
San Diego
HK$1,639 Return, found 19 hours ago
HK$1,639
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to San Diego, returning Sun, 7 Dec, priced at HK$1,639 found 19 hours ago
American Airlines
Wed, 3 Dec - Wed, 10 Dec
SEA
Seattle
SAN
San Diego
HK$1,865 Return, found 19 hours ago
HK$1,865
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 3 Dec from Seattle to San Diego, returning Wed, 10 Dec, priced at HK$1,865 found 19 hours ago
American Airlines
Thu, 4 Dec - Sun, 7 Dec
SEA
Seattle
SAN
San Diego
HK$1,907 Return, found 19 hours ago
HK$1,907
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to San Diego, returning Sun, 7 Dec, priced at HK$1,907 found 19 hours ago
American Airlines
Thu, 4 Dec - Sun, 7 Dec
SEA
Seattle
SAN
San Diego
HK$2,015 Return, found 19 hours ago
HK$2,015
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to San Diego, returning Sun, 7 Dec, priced at HK$2,015 found 19 hours ago
American Airlines
Thu, 4 Dec - Sun, 7 Dec
SEA
Seattle
SAN
San Diego
HK$2,026 Return, found 19 hours ago
HK$2,026
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to San Diego, returning Sun, 7 Dec, priced at HK$2,026 found 19 hours ago
American Airlines
Wed, 3 Dec - Wed, 10 Dec
SEA
Seattle
SAN
San Diego
HK$2,165 Return, found 19 hours ago
HK$2,165
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 3 Dec from Seattle to San Diego, returning Wed, 10 Dec, priced at HK$2,165 found 19 hours ago
American Airlines
Thu, 4 Dec - Sun, 7 Dec
SEA
Seattle
SAN
San Diego
HK$2,176 Return, found 19 hours ago
HK$2,176
Return
found 19 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Seattle to San Diego, returning Sun, 7 Dec, priced at HK$2,176 found 19 hours ago
Seattle to San Diego route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
American Airlines
Distance
1681 km
Average flight time
2 hours 51 mins

Frequently asked questions

How much is an American Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Finding cheap one-way American Airlines flights from SEA to SAN from HK$1,013 on Expedia is simple — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from HK$1,639 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to SAN with American Airlines?
Look for one-way or return flights to San Diego in January or November. You could find an affordable fare with American Airlines during these off-peak months.
Does American Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
To figure out if there's a direct route from SEA to SAN with American Airlines or another carrier, check the "Nonstop" box when looking for flights.
What airports does American Airlines fly into in San Diego?
American Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to San Diego come in to land at San Diego Intl. Airport (SAN). This is the main gateway to this destination.
Can I change or cancel my American Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to San Diego Intl. Airport (SAN)?
Depending on the type of fare you purchased, a fee is typically charged if you modify or cancel your booking more than 24 hours after it's confirmed. To secure flexible plane tickets, select our "Changes included" or "No cancel fee" filter when you look for flights. For more information on modifying or cancelling your reservation, go to "Trips," select your flight and click on "Manage Booking."
*Available to Expedia members.