Departure
Scheduled departure: 2026-10-29 19:37 (UTC-06:00). Confirm airport transport and terminal opening hours in advance.
AS2421 Boise Air Terminal/Gowen Field to San Diego International Airport nonstop flight: schedule, airports, aircraft and travel guide.
AS2421 Flight Overview
AS2421 is operated by Horizon Air as Alaska Horizon and connects Boise Air Terminal/Gowen Field (BOI) and San Diego International Airport (SAN). Scheduled departure: 2026-10-29 19:37 (UTC-06:00); scheduled arrival: 2026-10-29 20:58 (UTC-07:00).
AirlineAlaska Airlines
Flight numberAS2421
RouteBOI to SAN
Scheduled duration2 hr 21 min
Boise to San Diego Route Information
AS2421 is a nonstop flight from Boise Air Terminal/Gowen Field (BOI) to San Diego International Airport (SAN). Use the information below to plan your journey.
Route distanceApprox. 1,205 km
Scheduled flight time2 hr 21 min
Time difference-60 min
Flight typenonstop
Arrival
Scheduled arrival: 2026-10-29 20:58 (UTC-07:00). Arrange pickup, hotel and onward transport for the arrival date.
Time zones
Departure: Boise (UTC-06:00); arrival: San Diego (UTC-07:00).
AS2421 On-time Performance & History
Methodology
Arrival on-time rate
Sample flights-
Average departure delay-
Average arrival early-
Cancllation rate-
Longest delay-
Early arrivals-
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
Embraer 175
31 inches
Seat configuration depends on the operating aircraft
Availability and fees depend on the flight
AS2421 Airports
Terminals follow the published schedule; check official airline channels for same-day gates and operations.
BOIBoise Air Terminal/Gowen Field
Boise, United States · UTC-06:00
- Departure terminal
- Check-in counter
- Announced on the day
SANSan Diego International Airport
San Diego · UTC-07:00
- Arrival terminal
- Baggage belt
- Announced on the day
Boise Air Terminal/Gowen Field Departure & San Diego International Airport Arrival Guide
Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.
Departing from Boise Air Terminal/Gowen Field
AS2421 is scheduled to depart from . Allow time for international check-in, baggage drop, security and immigration.
Arriving at San Diego International Airport
Scheduled arrival is at . After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.
Planning your arrival
Scheduled arrival: 2026-10-29 20:58. 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.
Schedule changes
After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.
Cancellation and changes
Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.
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.
Arrive early for check-in
Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow Boise Air Terminal/Gowen Field guidance.
Check baggage allowance
Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.
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 AS2421?
Check the departure date
For an overnight flight, check the departure date on your ticket and plan airport transport in advance.
Confirm the operating carrier
Follow the airline rules shown in your booking for check-in and checked baggage.
Check boarding information
Gates and operating times may change; follow airline notices and airport displays.
Popular route recommendations
AS2421 Frequently Asked Questions
Which airline operates this flight?
AS2421 is operated by Alaska Airlines.
Where does it depart and arrive?
Boise Air Terminal/Gowen Field (BOI) → San Diego International Airport (SAN).
What are the departure and arrival times?
Scheduled departure 19:37, arrival 20:58 · 2 hours 21 minutes.
Which terminal is used for check-in?
Departure terminal No data, arrival terminal No data. Check-in, gate and baggage belt are announced on the day.
Are meals and inflight entertainment available?
No data
Explore This Route
Departure airportFlights from Boise Air Terminal/Gowen Field
Arrival airportSan Diego International Airport information
Operating airlineHorizon Air as Alaska Horizon information