San Diego (SAN) to Seattle (SEA) flights

Alaska Airlines, Delta Air Lines, Southwest Airlines fly nonstop from San Diego International Airport to Seattle-Tacoma International Airport, with about 102 flights a week in July 2026. The 1,050-mile flight takes about 3h 0m gate to gate.

From
SAN
San Diego
San Diego International Airport
To
SEA
Seattle
Seattle-Tacoma International Airport
Distance
1,050 mi ยท 1,690 km
Flight time
3h 0m
Airlines
3
Seats filled
83%
Flights a week, July 2026
4,522 flights and 619,802 passengers in 12 months
SEASEASAN
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying SAN to SEA

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Alaska Airlines61Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800396,0683h 0m
Delta Air Lines34Boeing 737-800, Airbus A220-300, Airbus A220-100202,0533h 1m
Southwest Airlines7Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-80021,6812h 52m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

SAN to SEA flight schedule

26 flight numbers flew this route in August 2026, 7 of them almost daily. The first usually leaves at 6:15am and the last at 8:33pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
AS 709Alaska Airlines6:15am9:20am1389%
AS 1473Alaska Airlines6:18am9:19am1892%
WN 247Southwest Airlines7:00am10:05am8n/a
DL 2530Delta Air Lines7:03am10:05am3191%
AS 608Alaska Airlines7:15am10:25am1383%
AS 512Alaska Airlines7:18am10:26am1885%
WN 2631Southwest Airlines8:30am11:30am2070%
AS 753Alaska Airlines8:40am11:44am1574%
AS 609Alaska Airlines9:31am12:39pm1191%
AS 1477Alaska Airlines10:09am1:13pm1378%
DL 2508Delta Air Lines11:06am2:15pm3191%
AS 475Alaska Airlines11:21am2:25pm1862%
AS 1368Alaska Airlines11:30am2:39pm1382%
DL 2533Delta Air Lines1:34pm4:30pm3181%
AS 465Alaska Airlines1:59pm4:58pm1868%
AS 685Alaska Airlines2:50pm5:51pm1382%
AS 1381Alaska Airlines3:16pm6:14pm1855%
AS 574Alaska Airlines3:50pm6:52pm1378%
DL 2572Delta Air Lines4:11pm7:05pm3185%
WN 4310Southwest Airlines4:40pm7:35pm2825%
AS 1373Alaska Airlines4:50pm7:52pm1393%
AS 417Alaska Airlines5:35pm8:35pm1765%
AS 1431Alaska Airlines6:35pm9:35pm1769%
AS 683Alaska Airlines6:35pm9:40pm1374%
DL 2613Delta Air Lines7:02pm10:05pm2685%
AS 622Alaska Airlines8:33pm11:40pm1081%

Is SAN to SEA on time?

From September 2025 to August 2026, 81% of 4,646 flights arrived within 15 minutes of schedule and 1.4% were cancelled. Flights leaving around 6am were the most punctual (94%), those around 6pm the least (72%). Most delay time was caused by late-arriving aircraft (55%).

AirlineFlightsOn timeAverage delayCancelled
Alaska Airlines2,72880%13 min1.7%
Delta Air Lines1,71087%11 min1.1%
Southwest Airlines20857%23 min0%

Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.

On-time arrivals by departure time

Scheduled departureFlightsOn time, relativeOn time
6am to 7am378
94%
7am to 8am501
88%
8am to 9am140
75%
9am to 10am156
85%
10am to 11am181
83%
11am to 12pm606
82%
12pm to 1pm103
88%
1pm to 2pm531
79%
2pm to 3pm215
77%
3pm to 4pm476
79%
4pm to 5pm264
76%
5pm to 6pm217
73%
6pm to 7pm306
72%
7pm to 8pm381
80%
8pm to 9pm174
81%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025417
61,554
September 2025385
48,390
October 2025340
43,298
November 2025314
40,950
December 2025346
45,104
January 2026331
40,428
February 2026303
41,512
March 2026379
50,699
April 2026408
55,004
May 2026419
59,226
June 2026431
65,342
July 2026454
68,554

Related

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.