San Diego International Airport
San Diego, United StatesSAN / KSAN
Major airport · 90 direct destinations · 1 runway · longest runway 9,400 ft
64 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
San Diego → Seattle
SAN
San DiegoSan Diego International Airport
San DiegoSan Diego International AirportSEASeattleSeattle–Tacoma International Airport
SeattleSeattle–Tacoma International Airport- Distance
- 1,051 mi
- Estimated flight time
- ~2h 35m
Same local time in San Diego and Seattle.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 12.5 flights a day, observed from October 2025 to September 2026.
- 12.5
- flights per day
- 15
- busiest month · Aug
- 10
- quietest month · Nov
- 2 hr 26 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 10Jan2026
- 11Feb
- 12Mar
- 13Apr
- 13May
- 14Jun
- 14Jul
- 15Aug
- 14Sep
- 11Oct2025
- 10Nov
- 10Dec
Airlines
Who flies it
Alaska Airlinesall year
Delta Air Linesall year
Southwest Airlinesspring
Horizon Airsummer
Through the day
Departure times
Local time in San Diego. Most departures between 14:00 and 17:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 13.1Mon
- 12.3Tue
- 11.3Wed
- 12.2Thu
- 12.7Fri
- 11.4Sat
- 11.9Sun
Fleet
Aircraft observed
- Boeing 737-800B73836%
- Boeing 737-900B73926%
- Boeing 737 MAX 9B39M22%
- Airbus A220-100BCS14%
- Airbus A220-300BCS34%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 10 | 314 |
|
| February 2026 | 11 | 296 |
|
| March 2026 | 12 | 359 |
|
| April 2026 | 13 | 375 |
|
| May 2026 | 13 | 368 |
|
| June 2026 | 14 | 426 |
|
| July 2026 | 14 | 441 |
|
| August 2026 | 15 | 447 |
|
| September 2026 | 14 | 416 |
|
| October 2025 | 11 | 331 |
|
| November 2025 | 10 | 300 |
|
| December 2025 | 10 | 297 |
|
Airlines observed on this route
From observed callsign routes on SAN-SEA - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Diego: 90.
- Direct destinations observed from Seattle: 132.
The airports on this route
Seattle–Tacoma International Airport
Seattle, United StatesSEA / KSEA
International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft
47 °F · FogSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
SAN PAESeattle Paine Field International AirportEverett is about 32 mi from Seattle.View route →SNA SEAJohn Wayne Orange County International AirportSanta Ana is about 76 mi from San Diego.View route →PSP SEAPalm Springs International AirportPalm Springs is about 85 mi from San Diego.View route →LGB SEALong Beach International AirportLong Beach is about 93 mi from San Diego.View route →
About the route from San Diego to Seattle
The observed direct connection between San Diego International Airport (SAN) and Seattle–Tacoma International Airport (SEA) covers approximately 1,051 mi. The estimated flight time is around 2h 35m. Alaska Airlines, Delta Air Lines, Horizon Air and Southwest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is San Diego from Seattle by air?
- The great-circle distance between San Diego International Airport and Seattle–Tacoma International Airport is approximately 1,051 mi.
- How long is the flight from San Diego to Seattle?
- Based on the distance, the estimated flight time is about 2h 35m. This is an estimate, not a schedule.
- Is there a direct connection from San Diego to Seattle?
- Yes, a direct connection between SAN and SEA has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Alaska Airlines, Delta Air Lines, Horizon Air and Southwest Airlines.
- How often is there a flight from San Diego to Seattle?
- On average around 12.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 4,370 observed flights. Mainly Alaska Airlines, Delta Air Lines, Southwest Airlines. That is an observation, not a timetable.
- What is the current time difference between San Diego and Seattle?
- Same local time in San Diego and Seattle.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.