Sacramento (SMF) to Seattle (SEA) flights

Alaska Airlines, SkyWest Airlines, Southwest Airlines, Horizon Air fly nonstop from Sacramento International Airport to Seattle-Tacoma International Airport, with about 99 flights a week in July 2026. The 605-mile flight takes about 2h 1m gate to gate.

From
SMF
Sacramento
Sacramento International Airport
To
SEA
Seattle
Seattle-Tacoma International Airport
Distance
605 mi · 974 km
Flight time
2h 1m
Airlines
4
Seats filled
78%
Flights a week, July 2026
4,540 flights and 432,847 passengers in 12 months
SEASEASMF
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying SMF to SEA

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Alaska Airlines37Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800178,4612h 1m
SkyWest Airlines35Embraer E175113,6372h 5m
Southwest Airlines25Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Boeing 737-800129,5881h 53m
Horizon Air2Embraer E17511,1611h 59m

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

SMF to SEA flight schedule

27 flight numbers flew this route in August 2026, 6 of them almost daily. The first usually leaves at 6:00am and the last at 8:34pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
AS 1358Alaska Airlines6:00am8:03am1380%
WN 4722Southwest Airlines6:00am8:00am4n/a
AS 1409Alaska Airlines6:13am8:16am1897%
WN 3744Southwest Airlines6:15am8:15am8n/a
WN 3149Southwest Airlines7:00am9:00am16100%
AS 795Alaska Airlines7:45am9:46am1875%
DL 4075Delta Air Lines · operated by SkyWest Airlines7:50am10:04am3187%
AS 692Alaska Airlines8:03am10:09am1369%
AS 1365Alaska Airlines10:15am12:16pm1183%
AS 1468Alaska Airlines10:23am12:22pm1886%
WN 3096Southwest Airlines11:25am1:25pm2857%
DL 3881Delta Air Lines · operated by SkyWest Airlines11:28am1:45pm3190%
WN 139Southwest Airlines12:30pm2:25pm4n/a
DL 4125Delta Air Lines · operated by SkyWest Airlines12:52pm3:01pm3194%
AS 1476Alaska Airlines12:57pm2:56pm1368%
WN 563Southwest Airlines1:00pm3:00pm1283%
AS 406Alaska Airlines1:02pm2:59pm1369%
WN 3743Southwest Airlines4:55pm6:50pm1267%
AS 683Alaska Airlines5:08pm7:07pm1360%
AS 1437Alaska Airlines5:10pm7:09pm1385%
AS 2402Alaska Airlines · operated by Horizon Air5:14pm7:10pm550%
DL 4153Delta Air Lines · operated by SkyWest Airlines5:28pm7:35pm3183%
WN 2508Southwest Airlines6:10pm8:05pm4n/a
WN 3323Southwest Airlines6:55pm8:50pm1275%
DL 4043Delta Air Lines · operated by SkyWest Airlines7:41pm9:59pm3185%
AS 1723Alaska Airlines7:52pm10:00pm8n/a
AS 403Alaska Airlines8:34pm10:39pm1580%

Is SMF to SEA on time?

From September 2025 to August 2026, 83% of 4,569 flights arrived within 15 minutes of schedule and 0.4% were cancelled. Flights leaving around 6am were the most punctual (91%), those around 8am the least (73%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (40%).

AirlineFlightsOn timeAverage delayCancelled
Alaska Airlines1,78480%10 min0.7%
Delta Air Lines1,64789%7 min0.2%
Southwest Airlines1,13878%11 min0.2%

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
5am to 6am154
97%
6am to 7am539
91%
7am to 8am335
88%
8am to 9am251
73%
10am to 11am202
86%
11am to 12pm454
86%
12pm to 1pm260
86%
1pm to 2pm332
89%
2pm to 3pm204
76%
4pm to 5pm171
83%
5pm to 6pm505
78%
6pm to 7pm180
82%
7pm to 8pm519
73%
8pm to 9pm248
78%
9pm to 10pm96
82%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025424
42,173
September 2025398
36,577
October 2025397
34,005
November 2025376
31,658
December 2025342
32,355
January 2026316
27,843
February 2026303
28,417
March 2026364
34,355
April 2026369
33,697
May 2026397
39,494
June 2026417
45,173
July 2026438
47,248

Related

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