Washington Dulles Airport Informational Guide to Washington Dulles Airport (IAD) - NON OFFICIAL

DL639 Delta Air Lines - Flight Status

Below, you can find details about Delta Air Lines flight DL639, which currently operates between the airports of Dulles - Washington Dulles International Airport (Airport Code IAD) and Seattle - Seattle-Tacoma International Airport (Airport Code SEA).
This flight data pertains specifically to the flight's details for Monday, November 27, 2023.

DL639 On Time performance:
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

DL639 Delta Air Lines to Seattle

This flight is not scheduled for February 27, 2024.

Airline information

Delta Air Lines
Delta Air Lines


Dulles (IAD)
November 27, 2023
Washington Dulles International Airport


Seattle (SEA)
November 27, 2023
Seattle-Tacoma International Airport
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.washington-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:

- KL6851 - KLM Royal Dutch Airlines

- MU8821 - China Eastern Airlines

Additional Information

Which is the frequency of flight DL639?
The flight DL639 is currently not scheduled at Washington Dulles Airport.

Which is the distance of flight DL639?
The distance between the two airports is 3767 kilometers.

Which is the flight time of flight DL639?
The scheduled flight time gate to gate is: 05:55 hours.
The real flight time gate to gate on average is: 05:43 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 Dulles: 2024-02-27 02:32:08
Current Time in Seattle: 2024-02-27 05:32:08

Alternative Flights

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

Alaska Airlines
- Flight Number: AS351. (On Time performance: 82 - Average Delay: 6 minutes)
- Flight Number: AS406. (On Time performance: 80 - Average Delay: 36 minutes)

Delta Air Lines
- Flight Number: DL544. (On Time performance: 89 - Average Delay: 28 minutes)

United Airlines
- Flight Number: UA326. (On Time performance: 73 - Average Delay: 3 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 23, 2023 to November 27, 2023, we have obtained these figures.
Total number of flights: 5
On Time: 4 ( 80 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 0 ( 0 % )
Major Delay: 1 ( 20 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 132 minutes.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from September 05, 2023 to November 27, 2023. 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 September 05, 2023 to November 27, 2023. 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 DL639

No flights for DL639 were scheduled in the past month. The last flight took place on Monday, November 27, 2023