UA3999 United Airlines - Flight Status
Below, you can find details about United Airlines flight UA3999, which currently operates between the airports of Hartford - Bradley International Airport (Airport Code BDL) and Dulles - Washington Dulles International Airport (Airport Code IAD).
This flight data pertains specifically to the flight's details for Sunday, May 31, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA3999
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA3999
UA3999 On Time performance:
57
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
UA3999 United Airlines to Dulles
Scheduled - On-time
Flight Status for Sunday May 31, 2026
Scheduled - On-time
Flight Status for Sunday May 31, 2026
Airline information
United Airlines
Equipment: Embraer 175 (Enhanced Winglets)
Departure
Hartford (BDL)
May 31, 2026
Bradley International Airport
Estimated Departure Time:
07:45 pm
Gate:
21
Scheduled Departure Time: 07:45 pm
Arrival
Dulles (IAD)
May 31, 2026
Washington Dulles International Airport
Estimated Arrival Time:
09:14 pm
Terminal:
-
Gate:
A6E
Scheduled Arrival Time: 09:14 pm
Baggage: 3
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.hartford-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:
- AC3357 - Air Canada
- CM1051 - Copa Airlines
- LH7875 - Lufthansa
Additional Information
Which is the frequency of flight UA3999?
The flight UA3999 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight UA3999?
The distance between the two airports is 324 miles.
Which is the flight time of flight UA3999?
The scheduled flight time gate to gate is: 01:29 hours.
The real flight time gate to gate on average is: 01:25 hours.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight UA3999 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight UA3999?
The distance between the two airports is 324 miles.
Which is the flight time of flight UA3999?
The scheduled flight time gate to gate is: 01:29 hours.
The real flight time gate to gate on average is: 01:25 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 airline serve the same route between Hartford and Dulles:
United Airlines - Flight Number: UA1764. (On Time performance: 75 - Average Delay: 17 minutes)
United Airlines - Flight Number: UA1764. (On Time performance: 75 - Average Delay: 17 minutes)
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 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
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from May 21, 2026 to May 28, 2026, we have obtained these figures.
Total number of flights: 7
On Time: 4 ( 57 % )
Moderate Delay: 1 ( 14 % )
Significant Delay: 0 ( 0 % )
Major Delay: 2 ( 29 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 34 minutes.
Total number of flights: 7
On Time: 4 ( 57 % )
Moderate Delay: 1 ( 14 % )
Significant Delay: 0 ( 0 % )
Major Delay: 2 ( 29 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 34 minutes.
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 UA3999
Date
Departure
Arrival
Duration
Aircraft
Status
Friday
29 May
29 May
07:38 pm
Hartford (BDL)
Hartford (BDL)
08:57 pm
Dulles (IAD)
Dulles (IAD)
01h 19min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
28 May
28 May
07:42 pm
Hartford (BDL)
Hartford (BDL)
09:03 pm
Dulles (IAD)
Dulles (IAD)
01h 21min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Wednesday
27 May
27 May
09:26 pm
Hartford (BDL)
Hartford (BDL)
10:55 pm
Dulles (IAD)
Dulles (IAD)
01h 29min
Embraer 175 (E
Embraer 175 (E
Tuesday
26 May
26 May
09:47 pm
Hartford (BDL)
Hartford (BDL)
11:08 pm
Dulles (IAD)
Dulles (IAD)
01h 21min
Embraer 175 (E
Embraer 175 (E
Landed - Delayed
Monday
25 May
25 May
08:21 pm
Hartford (BDL)
Hartford (BDL)
09:35 pm
Dulles (IAD)
Dulles (IAD)
01h 14min
Embraer 175 (E
Embraer 175 (E
Landed - Delayed
Sunday
24 May
24 May
07:37 pm
Hartford (BDL)
Hartford (BDL)
09:11 pm
Dulles (IAD)
Dulles (IAD)
01h 34min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Friday
22 May
22 May
07:40 pm
Hartford (BDL)
Hartford (BDL)
09:10 pm
Dulles (IAD)
Dulles (IAD)
01h 30min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Thursday
21 May
21 May
07:38 pm
Hartford (BDL)
Hartford (BDL)
09:01 pm
Dulles (IAD)
Dulles (IAD)
01h 23min
Embraer 175 (E
Embraer 175 (E
Landed - On-time