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

AS434 Alaska Airlines - Flight Status

Below, you can find details about Alaska Airlines flight AS434, which currently operates between the airports of San Francisco - San Francisco International Airport (Airport Code SFO) and Dulles - Washington Dulles International Airport (Airport Code IAD).
This flight data pertains specifically to the flight's details for Friday, July 04, 2025.

AS434 On Time performance:
68
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

AS434 Alaska Airlines to Dulles

Scheduled - On-time
Flight Status for Friday July 04, 2025
This flight was also scheduled for Yesterday (July 02, 2025). See it here
This flight is also scheduled for Today (July 03, 2025). See it here

Airline information

Alaska Airlines
Alaska Airlines
Equipment: Boeing 737-900 (winglets) Passenger/BBJ3

Departure

San Francisco (SFO)
July 04, 2025
San Francisco International Airport
Estimated Departure Time:
11:10 am
Terminal:
1
Gate:
B18
Scheduled Departure Time: 11:10 am

Arrival

Dulles (IAD)
July 04, 2025
Washington Dulles International Airport
Estimated Arrival Time:
07:19 pm
Terminal:
-
Gate:
B65
Scheduled Arrival Time: 07:19 pm
Baggage: 14
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.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- AA7411 - American Airlines

- FJ5850 - Fiji Airways

- HA6980 - Hawaiian Airlines

- QR3436 - Qatar Airways

- SQ1307 - Singapore Airlines

Additional Information

Which is the frequency of flight AS434?
The flight AS434 is scheduled to flight on daily basis.

Which is the distance of flight AS434?
The distance between the two airports is 2415 miles.

Which is the flight time of flight AS434?
The scheduled flight time gate to gate is: 05:09 hours.
The real flight time gate to gate on average is: 05:13 hours.

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: 2025-07-03 19:24:03
Current Time in Dulles: 2025-07-03 22:24:03

Alternative Flights

The following airlines serves the same route between San Francisco and Dulles:

Alaska Airlines
- Flight Number: AS455. (On Time performance: 60 - Average Delay: 16 minutes)

United Airlines
- Flight Number: UA1322. (On Time performance: 98 - Average Delay: 1 minutes)
- Flight Number: UA1355. (On Time performance: 89 - Average Delay: 8 minutes)
- Flight Number: UA1385. (On Time performance: 66 - Average Delay: 22 minutes)
- Flight Number: UA1849. (On Time performance: 77 - Average Delay: 13 minutes)
- Flight Number: UA1870. (On Time performance: 63 - Average Delay: 41 minutes)
- Flight Number: UA208. (On Time performance: 71 - Average Delay: 15 minutes)
- Flight Number: UA2110. (On Time performance: 80 - Average Delay: -4 minutes)
- Flight Number: UA2162. (On Time performance: 67 - Average Delay: 10 minutes)
- Flight Number: UA2409. (On Time performance: 77 - Average Delay: 8 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from April 02, 2025 to July 01, 2025, we have obtained these figures.
Total number of flights: 88
On Time: 60 ( 68 % )
Moderate Delay: 11 ( 13 % )
Significant Delay: 11 ( 13 % )
Major Delay: 6 ( 7 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 14 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from January 02, 2025 to July 01, 2025. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from July 02, 2024 to June 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.

Last Past Flights AS434

Date
Departure
Arrival
Duration
Aircraft
Status
Wednesday
02 July
11:45 am
San Francisco (SFO)
07:45 pm
Dulles (IAD)
05h 00min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Tuesday
01 July
11:22 am
San Francisco (SFO)
07:54 pm
Dulles (IAD)
05h 32min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Monday
30 June
11:18 am
San Francisco (SFO)
07:31 pm
Dulles (IAD)
05h 13min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
29 June
11:35 am
San Francisco (SFO)
07:44 pm
Dulles (IAD)
05h 09min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Saturday
28 June
11:10 am
San Francisco (SFO)
07:37 pm
Dulles (IAD)
05h 27min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Friday
27 June
11:08 am
San Francisco (SFO)
07:17 pm
Dulles (IAD)
05h 09min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
26 June
11:06 am
San Francisco (SFO)
08:52 pm
Dulles (IAD)
06h 46min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Wednesday
25 June
11:09 am
San Francisco (SFO)
07:49 pm
Dulles (IAD)
05h 40min
Boeing 737MAX
Boeing 737MAX
Landed - Delayed
Tuesday
24 June
11:49 am
San Francisco (SFO)
07:44 pm
Dulles (IAD)
04h 55min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Monday
23 June
11:01 am
San Francisco (SFO)
07:13 pm
Dulles (IAD)
05h 12min
Boeing 737-900
Boeing 737-900
Landed - On-time