UA978 United Airlines - Flight Status
Codeshare Flights
The flight AC4054 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA978. Check this page for details about flight UA978.
Below, you can find details about United Airlines flight UA978, which currently operates between the airports of Dulles - Washington Dulles International Airport (Airport Code IAD) and Edinburgh - Edinburgh Airport (Airport Code EDI).
This flight data pertains specifically to the flight's details for Sunday, August 16, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA978
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA978
UA978 On Time performance:
58
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
UA978 United Airlines from Dulles
Landed - On-time
Flight Status for Sunday August 16, 2026
Landed - On-time
Flight Status for Sunday August 16, 2026
Airline information
United Airlines
Equipment: Boeing 757-200 (winglets) Passenger
Departure
Dulles (IAD)
August 15, 2026
Washington Dulles International Airport
Departed at:
22:12
Terminal:
-
Gate:
D4
Scheduled Departure Time: 22:15
Arrival
Edinburgh (EDI)
August 16, 2026
Edinburgh Airport
Arrived at:
10:27
Gate:
3
Scheduled Arrival Time: 10:35
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.airport-edinburgh.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:
- AC4054 - Air Canada
- LH9227 - Lufthansa
Additional Information
Which is the frequency of flight UA978?
The flight UA978 is scheduled to flight on daily basis.
Which is the distance of flight UA978?
The distance between the two airports is 5582 kilometers.
Which is the flight time of flight UA978?
The scheduled flight time gate to gate is: 07:20 hours.
The real flight time gate to gate on average is: 07:05 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: 2026-08-16 17:28:27
Current Time in Edinburgh: 2026-08-16 22:28:27
The flight UA978 is scheduled to flight on daily basis.
Which is the distance of flight UA978?
The distance between the two airports is 5582 kilometers.
Which is the flight time of flight UA978?
The scheduled flight time gate to gate is: 07:20 hours.
The real flight time gate to gate on average is: 07:05 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: 2026-08-16 17:28:27
Current Time in Edinburgh: 2026-08-16 22:28:27
Alternative Flights
United Airlines is the only airline operating the route from Dulles to Edinburgh.
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from March 06, 2026 to August 14, 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 August 02, 2025 to July 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.
Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from May 15, 2026 to August 14, 2026, we have obtained these figures.
Total number of flights: 92
On Time: 53 ( 58 % )
Moderate Delay: 19 ( 21 % )
Significant Delay: 10 ( 11 % )
Major Delay: 8 ( 9 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 2 % )
Average Delay: 11 minutes.
Total number of flights: 92
On Time: 53 ( 58 % )
Moderate Delay: 19 ( 21 % )
Significant Delay: 10 ( 11 % )
Major Delay: 8 ( 9 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 2 % )
Average Delay: 11 minutes.
Last Past Flights UA978
Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
15 August
15 August
22:18
Dulles (IAD)
Dulles (IAD)
10:16
Edinburgh (EDI)
Edinburgh (EDI)
06h 58min
Boeing 757-200
Boeing 757-200
Landed - On-time
Friday
14 August
14 August
22:46
Dulles (IAD)
Dulles (IAD)
10:41
Edinburgh (EDI)
Edinburgh (EDI)
06h 55min
Boeing 757-200
Boeing 757-200
Landed - On-time
Thursday
13 August
13 August
22:09
Dulles (IAD)
Dulles (IAD)
11:02
Edinburgh (EDI)
Edinburgh (EDI)
07h 53min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Wednesday
12 August
12 August
22:33
Dulles (IAD)
Dulles (IAD)
10:45
Edinburgh (EDI)
Edinburgh (EDI)
07h 12min
Boeing 757-200
Boeing 757-200
Landed - On-time
Tuesday
11 August
11 August
23:05
Dulles (IAD)
Dulles (IAD)
11:00
Edinburgh (EDI)
Edinburgh (EDI)
06h 55min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Monday
10 August
10 August
22:26
Dulles (IAD)
Dulles (IAD)
10:58
Edinburgh (EDI)
Edinburgh (EDI)
07h 32min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Sunday
09 August
09 August
22:11
Dulles (IAD)
Dulles (IAD)
09:57
Edinburgh (EDI)
Edinburgh (EDI)
06h 46min
Boeing 757-200
Boeing 757-200
Landed - On-time
Saturday
08 August
08 August
22:51
Dulles (IAD)
Dulles (IAD)
11:04
Edinburgh (EDI)
Edinburgh (EDI)
07h 13min
Boeing 757-200
Boeing 757-200
Landed - Delayed
Friday
07 August
07 August
22:20
Dulles (IAD)
Dulles (IAD)
10:45
Edinburgh (EDI)
Edinburgh (EDI)
07h 25min
Boeing 757-200
Boeing 757-200
Landed - On-time
Thursday
06 August
06 August
22:13
Dulles (IAD)
Dulles (IAD)
10:33
Edinburgh (EDI)
Edinburgh (EDI)
07h 20min
Boeing 757-200
Boeing 757-200
Landed - On-time