Seattle–Tacoma International Airport
Seattle, United StatesSEA / KSEA
International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft
52 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Seattle → San Diego
SEA
SeattleSeattle–Tacoma International Airport
SeattleSeattle–Tacoma International AirportSANSan DiegoSan Diego International Airport
San DiegoSan Diego International Airport- Distance
- 1,051 mi
- Estimated flight time
- ~2h 35m
Same local time in Seattle and San Diego.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 12.75 flights a day, observed from October 2025 to September 2026.
- 12.8
- flights per day
- 15
- busiest month · Jul
- 10
- quietest month · Feb
- 2 hr 18 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 11Jan2026
- 10Feb
- 12Mar
- 13.5Apr
- 14May
- 14Jun
- 15Jul
- 15Aug
- 14Sep
- 11Oct2025
- 11Nov
- 11Dec
Airlines
Who flies it
Alaska Airlinesall year
Delta Air Linesall year
Southwest Airlinesspring
SkyWest Airlineswinter
Through the day
Departure times
Local time in Seattle. Most departures between 10:00 and 13:00.
- 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
- 13Mon
- 12Tue
- 11.7Wed
- 12.2Thu
- 12.9Fri
- 11.5Sat
- 12.3Sun
Fleet
Aircraft observed
- Boeing 737-800B73835%
- Boeing 737-900B73927%
- Boeing 737 MAX 9B39M22%
- Airbus A220-100BCS15%
- Airbus A220-300BCS35%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 11 | 320 |
|
| February 2026 | 10 | 294 |
|
| March 2026 | 12 | 356 |
|
| April 2026 | 13.5 | 382 |
|
| May 2026 | 14 | 379 |
|
| June 2026 | 14 | 421 |
|
| July 2026 | 15 | 441 |
|
| August 2026 | 15 | 429 |
|
| September 2026 | 14 | 416 |
|
| October 2025 | 11 | 343 |
|
| November 2025 | 11 | 319 |
|
| December 2025 | 11 | 308 |
|
Airlines observed on this route
From observed callsign routes on SEA-SAN - 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 Seattle: 132.
- Direct destinations observed from San Diego: 90.
The airports on this route
San Diego International Airport
San Diego, United StatesSAN / KSAN
Major airport · 90 direct destinations · 1 runway · longest runway 9,400 ft
81 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
PAE SANSeattle Paine Field International AirportEverett is about 32 mi from Seattle.View route →SEA SNAJohn Wayne Orange County International AirportSanta Ana is about 76 mi from San Diego.View route →SEA PSPPalm Springs International AirportPalm Springs is about 85 mi from San Diego.View route →SEA LGBLong Beach International AirportLong Beach is about 93 mi from San Diego.View route →
About the route from Seattle to San Diego
The observed direct connection between Seattle–Tacoma International Airport (SEA) and San Diego International Airport (SAN) covers approximately 1,051 mi. The estimated flight time is around 2h 35m. Alaska Airlines, Delta Air Lines, SkyWest Airlines and Southwest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Seattle from San Diego by air?
- The great-circle distance between Seattle–Tacoma International Airport and San Diego International Airport is approximately 1,051 mi.
- How long is the flight from Seattle to San Diego?
- 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 Seattle to San Diego?
- Yes, a direct connection between SEA and SAN 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, SkyWest Airlines and Southwest Airlines.
- How often is there a flight from Seattle to San Diego?
- On average around 12.75 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 4,408 observed flights. Mainly Alaska Airlines, Delta Air Lines, Southwest Airlines. That is an observation, not a timetable.
- What is the current time difference between Seattle and San Diego?
- Same local time in Seattle and San Diego.
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.