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

DL4127 Delta Air Lines - Flight Status

Below, you can find details about Delta Air Lines flight DL4127, which currently operates between the airports of Boise - Boise Air Terminal (Airport Code BOI) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Sunday, January 11, 2026.

DL4127 On Time performance:
90
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

DL4127 Delta Air Lines from Boise

Scheduled - On-time
Flight Status for Sunday January 11, 2026
This flight was also scheduled for Yesterday (January 10, 2026). See it here
This flight is also scheduled for Tomorrow (January 12, 2026). See it here

Airline information

Delta Air Lines
Delta Air Lines
Equipment: Embraer 175 (Enhanced Winglets)

Departure

Boise (BOI)
January 11, 2026
Boise Air Terminal
Estimated Departure Time:
01:40 pm
Terminal:
M
Gate:
B20
Scheduled Departure Time: 01:40 pm

Arrival

Seattle (SEA)
January 11, 2026
Seattle-Tacoma International Airport
Estimated Arrival Time:
02:35 pm
Gate:
A8
Scheduled Arrival Time: 02:35 pm
Baggage: 6
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:

- KL5482 - KLM Royal Dutch Airlines

- VS2334 - Virgin Atlantic

- WS6459 - WestJet

Additional Information

Which is the frequency of flight DL4127?
The flight DL4127 is scheduled to flight on daily basis.

Which is the distance of flight DL4127?
The distance between the two airports is 398 miles.

Which is the flight time of flight DL4127?
The scheduled flight time gate to gate is: 01:55 hours.
The real flight time gate to gate on average is: 01:44 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 Boise: 2026-01-11 10:19:58
Current Time in Seattle: 2026-01-11 09:19:58

Alternative Flights

The following airlines serves the same route between Boise and Seattle:

Alaska Airlines
- Flight Number: AS2077. (On Time performance: 90 - Average Delay: 6 minutes)
- Flight Number: AS2097. (On Time performance: 83 - Average Delay: 13 minutes)
- Flight Number: AS2108. (On Time performance: 86 - Average Delay: 10 minutes)
- Flight Number: AS2123. (On Time performance: 77 - Average Delay: 11 minutes)
- Flight Number: AS2206. (On Time performance: 84 - Average Delay: 12 minutes)
- Flight Number: AS2228. (On Time performance: 95 - Average Delay: 5 minutes)
- Flight Number: AS230.
- Flight Number: AS2305. (On Time performance: 74 - Average Delay: 13 minutes)
- Flight Number: AS2347. (On Time performance: 54 - Average Delay: 23 minutes)
- Flight Number: AS2352. (On Time performance: 65 - Average Delay: 15 minutes)
- Flight Number: AS3038. (On Time performance: 89 - Average Delay: 20 minutes)
- Flight Number: AS345. (On Time performance: 86 - Average Delay: 5 minutes)
- Flight Number: AS468. (On Time performance: 66 - Average Delay: 11 minutes)

Delta Air Lines
- Flight Number: DL3594. (On Time performance: 91 - Average Delay: 5 minutes)
- Flight Number: DL3629. (On Time performance: 81 - Average Delay: 25 minutes)
- Flight Number: DL3678. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: DL3688. (On Time performance: 98 - Average Delay: 2 minutes)
- Flight Number: DL3712. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: DL3740. (On Time performance: 78 - Average Delay: 18 minutes)
- Flight Number: DL3750.
- Flight Number: DL3775. (On Time performance: 92 - Average Delay: 13 minutes)
- Flight Number: DL3959.

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 October 09, 2025 to January 08, 2026, we have obtained these figures.
Total number of flights: 91
On Time: 82 ( 90 % )
Moderate Delay: 5 ( 5 % )
Significant Delay: 4 ( 4 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 4 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from July 09, 2025 to January 08, 2026. 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 January 02, 2025 to December 31, 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 DL4127

Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
10 January
01:40 pm
Boise (BOI)
02:16 pm
Seattle (SEA)
01h 36min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Friday
09 January
01:38 pm
Boise (BOI)
02:19 pm
Seattle (SEA)
01h 41min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
08 January
01:37 pm
Boise (BOI)
02:29 pm
Seattle (SEA)
01h 52min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Wednesday
07 January
02:13 pm
Boise (BOI)
02:54 pm
Seattle (SEA)
01h 41min
Embraer 175 (E
Embraer 175 (E
Landed - Delayed
Tuesday
06 January
01:30 pm
Boise (BOI)
02:22 pm
Seattle (SEA)
01h 52min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Monday
05 January
01:34 pm
Boise (BOI)
02:21 pm
Seattle (SEA)
01h 47min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Sunday
04 January
03:23 pm
Boise (BOI)
04:02 pm
Seattle (SEA)
01h 39min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Saturday
03 January
03:21 pm
Boise (BOI)
04:04 pm
Seattle (SEA)
01h 43min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Friday
02 January
03:29 pm
Boise (BOI)
04:11 pm
Seattle (SEA)
01h 42min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
01 January
03:44 pm
Boise (BOI)
04:32 pm
Seattle (SEA)
01h 48min
Embraer 175
Embraer 175
Landed - On-time