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

DL3678 Delta Air Lines - Flight Status

Codeshare Flights
The flight AM3450 from Aeromexico (AM) is a codeshare flight operated by Delta Air Lines (DL) under the flight number DL3678. Check this page for details about flight DL3678.

Below, you can find details about Delta Air Lines flight DL3678, 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, February 08, 2026.

DL3678 On Time performance:
91
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

DL3678 Delta Air Lines from Boise

Scheduled - On-time
Flight Status for Sunday February 08, 2026
This flight was also scheduled for Yesterday (February 06, 2026). See it here
This flight is also scheduled for Today (February 07, 2026). See it here

Airline information

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

Departure

Boise (BOI)
February 08, 2026
Boise Air Terminal
Estimated Departure Time:
07:25 am
Terminal:
M
Gate:
B22
Scheduled Departure Time: 07:25 am

Arrival

Seattle (SEA)
February 08, 2026
Seattle-Tacoma International Airport
Estimated Arrival Time:
08:08 am
Gate:
S7
Scheduled Arrival Time: 08:20 am
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:

- AM3450 - Aeromexico

Additional Information

Which is the frequency of flight DL3678?
The flight DL3678 is scheduled to flight on daily basis.

Which is the distance of flight DL3678?
The distance between the two airports is 398 miles.

Which is the flight time of flight DL3678?
The scheduled flight time gate to gate is: 01:55 hours.
The real flight time gate to gate on average is: 01:48 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: 2026-02-07 15:13:04
Current Time in Seattle: 2026-02-07 14:13:04

Alternative Flights

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

Alaska Airlines
- Flight Number: AS2108. (On Time performance: 86 - Average Delay: 7 minutes)
- Flight Number: AS2206. (On Time performance: 77 - Average Delay: 13 minutes)
- Flight Number: AS230. (On Time performance: 93 - Average Delay: 5 minutes)
- Flight Number: AS2305. (On Time performance: 79 - Average Delay: 13 minutes)
- Flight Number: AS3038. (On Time performance: 85 - Average Delay: 20 minutes)
- Flight Number: AS345. (On Time performance: 86 - Average Delay: 8 minutes)
- Flight Number: AS468. (On Time performance: 76 - Average Delay: 9 minutes)

Delta Air Lines
- Flight Number: DL3688. (On Time performance: 98 - Average Delay: 2 minutes)
- Flight Number: DL3740. (On Time performance: 75 - Average Delay: 19 minutes)
- Flight Number: DL3750. (On Time performance: 86 - Average Delay: 12 minutes)
- Flight Number: DL3775. (On Time performance: 86 - Average Delay: 14 minutes)
- Flight Number: DL3959. (On Time performance: 93 - Average Delay: 10 minutes)
- Flight Number: DL4127. (On Time performance: 88 - Average Delay: 7 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 November 03, 2025 to February 02, 2026, we have obtained these figures.
Total number of flights: 92
On Time: 84 ( 91 % )
Moderate Delay: 3 ( 3 % )
Significant Delay: 2 ( 2 % )
Major Delay: 1 ( 1 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 2 % )

Average Delay: 5 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from August 03, 2025 to February 02, 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 February 02, 2025 to January 31, 2026. 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 DL3678

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
06 February
07:14 am
Boise (BOI)
08:06 am
Seattle (SEA)
01h 52min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
05 February
07:17 am
Boise (BOI)
08:16 am
Seattle (SEA)
01h 59min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Wednesday
04 February
07:15 am
Boise (BOI)
08:07 am
Seattle (SEA)
01h 52min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Tuesday
03 February
07:21 am
Boise (BOI)
08:18 am
Seattle (SEA)
01h 57min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Monday
02 February
07:11 am
Boise (BOI)
08:23 am
Seattle (SEA)
02h 12min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Sunday
01 February
07:15 am
Boise (BOI)
07:53 am
Seattle (SEA)
01h 38min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Saturday
31 January
07:15 am
Boise (BOI)
08:01 am
Seattle (SEA)
01h 46min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Friday
30 January
07:12 am
Boise (BOI)
08:00 am
Seattle (SEA)
01h 48min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
29 January
07:15 am
Boise (BOI)
07:55 am
Seattle (SEA)
01h 40min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Wednesday
28 January
07:21 am
Boise (BOI)
08:41 am
Seattle (SEA)
02h 20min
Embraer 175 (E
Embraer 175 (E
Landed - Delayed