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AS621 Flight Information & Schedule

Alaska Airlines · Seattle–Tacoma International Airport (SEA) to San Diego International Airport (SAN)

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AS621 Seattle–Tacoma International Airport to San Diego International Airport nonstop flight: schedule, airports, aircraft and travel guide.

AS621 Flight Overview

AS621 is operated by Alaska Airlines and connects Seattle–Tacoma International Airport (SEA) and San Diego International Airport (SAN). Scheduled departure: 2026-10-29 11:31 (UTC-07:00); scheduled arrival: 2026-10-29 14:38 (UTC-07:00).

AirlineAlaska Airlines
Flight numberAS621
RouteSEA to SAN
Scheduled duration3 hr 7 min

Seattle to San Diego Route Information

AS621 is a nonstop flight from Seattle–Tacoma International Airport (SEA) to San Diego International Airport (SAN). Use the information below to plan your journey.

Route distanceApprox. 1,689 km
Scheduled flight time3 hr 7 min
Time difference0 min
Flight typenonstop
01

Departure

Scheduled departure: 2026-10-29 11:31 (UTC-07:00). Confirm airport transport and terminal opening hours in advance.

02

Arrival

Scheduled arrival: 2026-10-29 14:38 (UTC-07:00). Arrange pickup, hotel and onward transport for the arrival date.

03

Time zones

Departure: Seattle (UTC-07:00); arrival: San Diego (UTC-07:00).

AS621 On-time Performance & History

Methodology

90%Arrival on-time rate
Sample flights90 (flights)
Average departure delay45 min
Average arrival early6 min
Cancllation rate0%
Longest delay-
Early arrivals67%

Historical statistics are for reference only and do not predict future flight performance.

Aircraft, Cabin & Services

Based on currently published aircraft and cabin information; the operating aircraft may change.

Published aircraft type

Boeing 737

Economy 17 in; Business 37 in

Seat layout159

Business 16 · Economy 143

Business Class2-2

37 in

Seat configuration depends on the operating aircraft

Economy Class3-3

17 in

MealsSnacks and meals vary by route; food for purchase in Main Cabin

Inflight entertainmentIn-flight entertainment is unavailable

Inflight Wi-FiWi-Fi is available

Availability and fees depend on the flight

PowerBusiness: Power outlets; Economy: USB port and power outlet

BassinetUnavailable

Accessibility-

AS621 Airports

Terminals follow the published schedule; check official airline channels for same-day gates and operations.

Seattle–Tacoma International Airport Departure & San Diego International Airport Arrival Guide

Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.

SEA

Departing from Seattle–Tacoma International Airport

AS621 is scheduled to depart from . Allow time for international check-in, baggage drop, security and immigration.

SAN

Arriving at San Diego International Airport

Scheduled arrival is at T2. After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.

 

Planning your arrival

Scheduled arrival: 2026-10-29 14:38. Use the arrival date when booking hotels and pickup services.

Flight Changes, Cancellations & Missed Flights

If the schedule or aircraft changes, follow the booking channel and operating carrier rules.

01

Schedule changes

After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.

02

Cancellation and changes

Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.

03

Missed flight

If you may not reach the airport on time, contact the booking channel or airline quickly to protect later sectors.

Check-in, Baggage & Entry Tips

International check-in deadlines, baggage allowance and entry requirements may vary by fare and traveller.

01

Arrive early for check-in

Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow Seattle–Tacoma International Airport guidance.

02

Check baggage allowance

Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.

03

Prepare entry documents

Before departure, check passport validity, visa or visa-free eligibility, andSan Diego International Airport’ latest arrival declaration requirements.

What should I check before flying AS621?

01

Check the departure date

For an overnight flight, check the departure date on your ticket and plan airport transport in advance.

02

Confirm the operating carrier

Follow the airline rules shown in your booking for check-in and checked baggage.

03

Check boarding information

Gates and operating times may change; follow airline notices and airport displays.

Popular route recommendations

AS621 Frequently Asked Questions

Which airline operates this flight?

AS621 is operated by Alaska Airlines.

Where does it depart and arrive?

Seattle–Tacoma International Airport (SEA) → San Diego International Airport (SAN).

What are the departure and arrival times?

Scheduled departure 11:31, arrival 14:38 · 3 hours 7 minutes.

Which terminal is used for check-in?

Departure terminal No data, arrival terminal T2. Check-in, gate and baggage belt are announced on the day.

Are meals and inflight entertainment available?

Meals: Snacks and meals vary by route; food for purchase in Main Cabin. Inflight entertainment: In-flight entertainment is unavailable.

Explore This Route

Departure airportFlights from Seattle–Tacoma International Airport
Arrival airportSan Diego International Airport information
Operating airlineAlaska Airlines information