Domestic route
Cheap flights from Seattle to San Diego
Seattle-Tacoma International Airport (SEA) to San Diego International Airport (SAN). 1,052 miles, 2h 30m nonstop.
SEA to SAN at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 1,052 milesgreat-circle
- Typical flight time
- 2h 30mnonstop, gate to gate
- Nonstop airlines
- DLWNASMX4 airlinesDelta, Southwest, Alaska
- Nonstop flights per day
- 23all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Tuesday19% less than Sunday
- Time difference
- Same time zone
Seattle to San Diego
Round trips from $95
Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 6.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSeattle to San Diego fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Seattle to San Diego
4 airlines fly nonstop with 23 departures a day combined, plus 5 more with one stop.
- ASAlaska AirlinesoneworldNonstop · 10 flights a day · first checked bag from $35
- DLDelta Air LinesSkyTeamNonstop · 7 flights a day · first checked bag from $35
- WNSouthwest AirlinesLow-costNonstop · 4 flights a day · first checked bag from $35
- MXBreeze AirwaysLow-costNonstop · 2 flights a day · first checked bag from $45
- AAAmerican AirlinesoneworldConnecting via PHX, LAX · first checked bag from $40
- F9Frontier AirlinesLow-costConnecting via LAS, PHX · first checked bag from $55
- B6JetBlueConnecting via LAX · first checked bag from $40
- NKSpirit AirlinesLow-costConnecting via LAS · first checked bag from $55
- UAUnited AirlinesStar AllianceConnecting via SFO, LAX · first checked bag from $40
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Los Angeles (LAX)AAUAB63 airlines
- Phoenix (PHX)AAF92 airlines
- Las Vegas (LAS)NKF92 airlines
- San Francisco (SFO)UA1 airline
Tips for this route
- Delta, Southwest, Alaska and Breeze all fly SEA to SAN nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $95; September 2026 is the most expensive at $122 and up, a difference of $27 per traveler.
- Departing on a Tuesday averages 19% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks.
Destination guide
San Diego: 70 degrees, 70 miles of coastline
San Diego has the most reliable weather of any big US city and an airport ten minutes from downtown. Balboa Park, the zoo, La Jolla's coves and a fish-taco culture make it an easy, relaxed beach trip with strong fare competition from Southwest and Alaska.
Best time to visit: September–November is the warmest ocean and clearest skies. Spring is pleasant but 'May gray' fog is common at the coast; summer is peak for families. Winter is mild and inexpensive.
Flying the other way? San Diego to SeattleFares, airlines and tips for SAN to SEA.Ready to compare live fares?
See every airline on SEA–SAN side by side with bags and seat rules spelled out.
Search Seattle to San DiegoSeattle to San Diego: common questions
How long is the flight from Seattle to San Diego?
A nonstop flight from Seattle (SEA) to San Diego (SAN) takes about 2h 30m gate to gate, covering 1,052 miles. Connecting itineraries add the layover, typically 1 to 3 hours more in total.
Which airlines fly nonstop from SEA to SAN?
Delta Air Lines, Southwest Airlines, Alaska Airlines and Breeze Airways operate nonstop flights from Seattle (SEA) to San Diego (SAN), with 23 nonstop departures a day between them. One-stop options connect through LAX, PHX and LAS.
What is the cheapest month to fly from Seattle to San Diego?
Over the next six months, January 2027 has the lowest round-trip fares from Seattle (SEA) to San Diego (SAN), starting at $95 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book Seattle to San Diego flights?
Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Seattle and San Diego?
San Diego is in the same time zone as Seattle, so there is no clock change. SEA is on America/Los Angeles time and SAN on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.
More flights from Seattle
All routesMore flights to San Diego
All routes- New York to San DiegoJFK → SANfrom $191
- Chicago to San DiegoORD → SANfrom $129
- Dallas to San DiegoDFW → SANfrom $112
- Denver to San DiegoDEN → SANfrom $77
- Los Angeles to San DiegoLAX → SANfrom $44
- San Francisco to San DiegoSFO → SANfrom $52
- Las Vegas to San DiegoLAS → SANfrom $62
- San Jose to San DiegoSJC → SANfrom $58