Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

DL1556 Delta Air Lines - Flight Status

Codeshare Flights
The flight WS8419 from WestJet (WS) is a codeshare flight operated by Delta Air Lines (DL) under the flight number DL1556. Check this page for details about flight DL1556.

Below, you can find details about Delta Air Lines flight DL1556, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Las Vegas - Las Vegas Harry Reid International Airport (Airport Code LAS).
This flight data pertains specifically to the flight's details for Thursday, September 25, 2025.

DL1556 On Time performance:
82
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

DL1556 Delta Air Lines to Las Vegas

Landed - Delayed
Delay: 23 minutes
Flight Status for Thursday September 25, 2025
This flight is also scheduled for Today (September 26, 2025). See it here

Airline information

Delta Air Lines
Delta Air Lines
Equipment: Boeing 737-900 (winglets) Passenger/BBJ3

Departure

Seattle (SEA)
September 25, 2025
Seattle-Tacoma International Airport
Departed at:
03:44 pm
Gate:
A2
Scheduled Departure Time: 03:45 pm

Arrival

Las Vegas (LAS)
September 25, 2025
Las Vegas Harry Reid International Airport
Arrived at:
06:43 pm
Terminal:
1
Gate:
D41
Scheduled Arrival Time: 06:20 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:

- KE3033 - Korean Air

- WS8419 - WestJet

Additional Information

Which is the frequency of flight DL1556?
The flight DL1556 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.

Which is the distance of flight DL1556?
The distance between the two airports is 867 miles.

Which is the flight time of flight DL1556?
The scheduled flight time gate to gate is: 02:35 hours.
The real flight time gate to gate on average is: 02:29 hours.

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 Las Vegas:

Alaska Airlines
- Flight Number: AS478. (On Time performance: 61 - Average Delay: 17 minutes)
- Flight Number: AS551. (On Time performance: 74 - Average Delay: 12 minutes)
- Flight Number: AS600. (On Time performance: 58 - Average Delay: 20 minutes)
- Flight Number: AS612. (On Time performance: 91 - Average Delay: 4 minutes)
- Flight Number: AS658. (On Time performance: 78 - Average Delay: 10 minutes)
- Flight Number: AS730. (On Time performance: 51 - Average Delay: 27 minutes)
- Flight Number: AS738. (On Time performance: 75 - Average Delay: 12 minutes)

Delta Air Lines
- Flight Number: DL2880. (On Time performance: 85 - Average Delay: 10 minutes)
- Flight Number: DL2905. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: DL2922. (On Time performance: 97 - Average Delay: 2 minutes)
- Flight Number: DL2949. (On Time performance: 79 - Average Delay: 13 minutes)

Frontier Airlines
- Flight Number: F94830. (On Time performance: 67 - Average Delay: 34 minutes)

Southwest Airlines
- Flight Number: WN1141. (On Time performance: 40 - Average Delay: 20 minutes)
- Flight Number: WN1342. (On Time performance: 54 - Average Delay: 21 minutes)
- Flight Number: WN1552. (On Time performance: 93 - Average Delay: 3 minutes)
- Flight Number: WN2080. (On Time performance: 95 - Average Delay: 1 minutes)
- Flight Number: WN3527. (On Time performance: 86 - Average Delay: 4 minutes)
- Flight Number: WN3582. (On Time performance: 43 - Average Delay: 23 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 September 11, 2025 to September 23, 2025, we have obtained these figures.
Total number of flights: 11
On Time: 9 ( 82 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 2 ( 18 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 7 minutes.
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 DL1556

Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
25 September
03:44 pm
Seattle (SEA)
06:43 pm
Las Vegas (LAS)
02h 59min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Wednesday
24 September
03:36 pm
Seattle (SEA)
06:03 pm
Las Vegas (LAS)
02h 27min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
23 September
03:36 pm
Seattle (SEA)
06:13 pm
Las Vegas (LAS)
02h 37min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
22 September
03:29 pm
Seattle (SEA)
06:16 pm
Las Vegas (LAS)
02h 47min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
21 September
03:43 pm
Seattle (SEA)
06:05 pm
Las Vegas (LAS)
02h 22min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
19 September
04:30 pm
Seattle (SEA)
07:03 pm
Las Vegas (LAS)
02h 33min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Thursday
18 September
04:29 pm
Seattle (SEA)
06:59 pm
Las Vegas (LAS)
02h 30min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Wednesday
17 September
03:45 pm
Seattle (SEA)
06:06 pm
Las Vegas (LAS)
02h 21min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
16 September
03:36 pm
Seattle (SEA)
06:03 pm
Las Vegas (LAS)
02h 27min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
15 September
03:43 pm
Seattle (SEA)
06:10 pm
Las Vegas (LAS)
02h 27min
Boeing 737-900
Boeing 737-900
Landed - On-time