DL3999 Delta Air Lines - Flight Status
Codeshare Flights
The flight VS1941 from Virgin Atlantic (VS) is a codeshare flight operated by Delta Air Lines (DL) under the flight number DL3999. Check this page for details about flight DL3999.
Below, you can find details about Delta Air Lines flight DL3999, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and San Jose - San Jose Mineta International Airport (Airport Code SJC).
This flight data pertains specifically to the flight's details for Friday, October 10, 2025.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL3999
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL3999
DL3999 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
DL3999 Delta Air Lines to San Jose
Scheduled - On-time
Flight Status for Friday October 10, 2025
This flight was also scheduled for Yesterday (October 08, 2025). See it here
This flight is also scheduled for Today (October 09, 2025). See it here
Scheduled - On-time
Flight Status for Friday October 10, 2025
Airline information
Delta Air Lines
Equipment: Embraer 175 (Enhanced Winglets)
Departure
Seattle (SEA)
October 10, 2025
Seattle-Tacoma International Airport
Estimated Departure Time:
04:45 pm
Gate:
-
Scheduled Departure Time: 04:45 pm
Arrival
San Jose (SJC)
October 10, 2025
San Jose Mineta International Airport
Estimated Arrival Time:
06:51 pm
Terminal:
A
Gate:
-
Scheduled Arrival Time: 06:55 pm
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.seattle-airport.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:
- KE3085 - Korean Air
- KL5039 - KLM Royal Dutch Airlines
- SK3687 - SAS Scandinavian Airlines
- VS1941 - Virgin Atlantic
Additional Information
Which is the frequency of flight DL3999?
The flight DL3999 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday on a weekly basis.
Which is the distance of flight DL3999?
The distance between the two airports is 697 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight DL3999 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday on a weekly basis.
Which is the distance of flight DL3999?
The distance between the two airports is 697 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
Alternative Flights
The following airlines serves the same route between Seattle and San Jose:
Alaska Airlines
- Flight Number: AS1046. (On Time performance: 70 - Average Delay: 16 minutes)
- Flight Number: AS1079.
- Flight Number: AS1080. (On Time performance: 80 - Average Delay: 9 minutes)
- Flight Number: AS1114. (On Time performance: 68 - Average Delay: 16 minutes)
- Flight Number: AS1200. (On Time performance: 79 - Average Delay: 14 minutes)
- Flight Number: AS1226. (On Time performance: 94 - Average Delay: 4 minutes)
- Flight Number: AS1310. (On Time performance: 69 - Average Delay: 14 minutes)
Delta Air Lines
- Flight Number: DL3557. (On Time performance: 95 - Average Delay: 10 minutes)
- Flight Number: DL3559. (On Time performance: 92 - Average Delay: 4 minutes)
- Flight Number: DL3789. (On Time performance: 79 - Average Delay: 12 minutes)
- Flight Number: DL3840. (On Time performance: 97 - Average Delay: 3 minutes)
Southwest Airlines
- Flight Number: WN170. (On Time performance: 74 - Average Delay: 11 minutes)
- Flight Number: WN2247.
- Flight Number: WN4260. (On Time performance: 82 - Average Delay: 7 minutes)
- Flight Number: WN4263. (On Time performance: 55 - Average Delay: 17 minutes)
- Flight Number: WN4444.
- Flight Number: WN503.
Alaska Airlines
- Flight Number: AS1046. (On Time performance: 70 - Average Delay: 16 minutes)
- Flight Number: AS1079.
- Flight Number: AS1080. (On Time performance: 80 - Average Delay: 9 minutes)
- Flight Number: AS1114. (On Time performance: 68 - Average Delay: 16 minutes)
- Flight Number: AS1200. (On Time performance: 79 - Average Delay: 14 minutes)
- Flight Number: AS1226. (On Time performance: 94 - Average Delay: 4 minutes)
- Flight Number: AS1310. (On Time performance: 69 - Average Delay: 14 minutes)
Delta Air Lines
- Flight Number: DL3557. (On Time performance: 95 - Average Delay: 10 minutes)
- Flight Number: DL3559. (On Time performance: 92 - Average Delay: 4 minutes)
- Flight Number: DL3789. (On Time performance: 79 - Average Delay: 12 minutes)
- Flight Number: DL3840. (On Time performance: 97 - Average Delay: 3 minutes)
Southwest Airlines
- Flight Number: WN170. (On Time performance: 74 - Average Delay: 11 minutes)
- Flight Number: WN2247.
- Flight Number: WN4260. (On Time performance: 82 - Average Delay: 7 minutes)
- Flight Number: WN4263. (On Time performance: 55 - Average Delay: 17 minutes)
- Flight Number: WN4444.
- Flight Number: WN503.
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: It is not possible to calculate the On-Time Performance for this flight accurately by month 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: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights DL3999
Date
Departure
Arrival
Duration
Aircraft
Status
Wednesday
08 October
08 October
04:37 pm
Seattle (SEA)
Seattle (SEA)
06:48 pm
San Jose (SJC)
San Jose (SJC)
02h 11min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Tuesday
07 October
07 October
04:38 pm
Seattle (SEA)
Seattle (SEA)
06:49 pm
San Jose (SJC)
San Jose (SJC)
02h 11min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Monday
06 October
06 October
04:35 pm
Seattle (SEA)
Seattle (SEA)
06:43 pm
San Jose (SJC)
San Jose (SJC)
02h 08min
Embraer 175 (E
Embraer 175 (E
Landed - On-time