Informational Guide to San Francisco Airport (SFO) - NON OFFICIAL

AS457 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS457, which currently operates between the airports of San Francisco - San Francisco International Airport (Airport Code SFO) and Guanacaste - Guanacaste Airport (Airport Code LIR).
This flight data pertains specifically to the flight's details for Saturday, December 06, 2025.

AS457 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

AS457 Alaska Airlines to Guanacaste

We only provide flight information for yesterday, today and tomorrow. This flight is not scheduled for this interval of time.

Airline information

Alaska Airlines
Alaska Airlines

Departure

San Francisco (SFO)
December 06, 2025
San Francisco International Airport

Arrival

Guanacaste (LIR)
December 06, 2025
Guanacaste Airport
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.airport-sfo.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight AS457?
The flight AS457 is scheduled to flight on Saturday, Sunday on a weekly basis.

Which is the distance of flight AS457?
The distance between the two airports is 2949 miles.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in San Francisco: 2025-12-08 18:21:27
Current Time in Guanacaste: 2025-12-08 20:21:27

Alternative Flights

The following airline serve the same route between San Francisco and Guanacaste:
United Airlines - Flight Number: UA2139. (On Time performance: 60 - Average Delay: 8 minutes)

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from December 21, 2024 to November 30, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.

Last Past Flights AS457

Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
06 December
09:11 am
San Francisco (SFO)
05:19 pm
Guanacaste (LIR)
06h 08min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Tuesday
02 December
06:14 am
San Francisco (SFO)
08:38 am
Seattle (SEA)
00h 24min
Boeing 737-800
Boeing 737-800
Landed - On-time
Sunday
30 November
09:28 am
San Francisco (SFO)
05:30 pm
Guanacaste (LIR)
06h 02min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Sunday
23 November
08:39 am
San Francisco (SFO)
05:04 pm
Guanacaste (LIR)
06h 25min
Boeing 737-800
Boeing 737-800
Landed - On-time