Domestic route
Cheap flights from San Diego to Seattle
San Diego International Airport (SAN) to Seattle-Tacoma International Airport (SEA). 1,052 miles, 2h 35m nonstop.
SAN to SEA 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 35mnonstop, 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
- Tuesday22% less than Sunday
- Time difference
- Same time zone
San Diego to Seattle
Round trips from $90
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 WhatsAppSan Diego to Seattle 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 San Diego to Seattle
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 SAN to SEA 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 $90; September 2026 is the most expensive at $118 and up, a difference of $28 per traveler.
- Departing on a Tuesday averages 22% 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
Seattle: Coffee, mountains and Puget Sound
Seattle is the Pacific Northwest's gateway: Pike Place Market, the Space Needle and ferries across Puget Sound, with Mount Rainier and the Olympic Peninsula a couple of hours away. Sea-Tac is a Delta and Alaska hub with light rail downtown.
Best time to visit: July–September is dry, sunny and gorgeous — and the most expensive. May–June and late September are good compromises. October–April is gray and drizzly but cheap.
Flying the other way? Seattle to San DiegoFares, airlines and tips for SEA to SAN.Ready to compare live fares?
See every airline on SAN–SEA side by side with bags and seat rules spelled out.
Search San Diego to SeattleSan Diego to Seattle: common questions
How long is the flight from San Diego to Seattle?
A nonstop flight from San Diego (SAN) to Seattle (SEA) takes about 2h 35m 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 SAN to SEA?
Delta Air Lines, Southwest Airlines, Alaska Airlines and Breeze Airways operate nonstop flights from San Diego (SAN) to Seattle (SEA), 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 San Diego to Seattle?
Over the next six months, January 2027 has the lowest round-trip fares from San Diego (SAN) to Seattle (SEA), starting at $90 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book San Diego to Seattle 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 San Diego and Seattle?
Seattle is in the same time zone as San Diego, so there is no clock change. SAN is on America/Los Angeles time and SEA 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 San Diego
All routes- San Diego to New YorkSAN → JFKfrom $194
- San Diego to ChicagoSAN → ORDfrom $127
- San Diego to DallasSAN → DFWfrom $115
- San Diego to DenverSAN → DENfrom $80
- San Diego to Los AngelesSAN → LAXfrom $47
- San Diego to San FranciscoSAN → SFOfrom $52
- San Diego to Las VegasSAN → LASfrom $63
- San Diego to San JoseSAN → SJCfrom $59