Informational Guide to Raleigh–Durham International Airport (RDU) - NON OFFICIAL

UA1821 United Airlines - Flight Status

Below, you can find details about United Airlines flight UA1821, which currently operates between the airports of Houston - Houston George Bush Intercontinental Airport (Airport Code IAH) and Raleigh/Durham - Raleigh-Durham International Airport (Airport Code RDU).
This flight data pertains specifically to the flight's details for Thursday, May 22, 2025.

UA1821 On Time performance:
94
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

UA1821 United Airlines from Houston

Scheduled - On-time
Flight Status for Thursday May 22, 2025
This flight was also scheduled for Yesterday (May 21, 2025). See it here
This flight is also scheduled for Tomorrow (May 23, 2025). See it here

Airline information

United Airlines
United Airlines
Equipment: Boeing 737-900 (winglets) Passenger/BBJ3

Departure

Houston (IAH)
May 22, 2025
Houston George Bush Intercontinental Airport
Estimated Departure Time:
12:00 pm
Terminal:
E
Gate:
E10
Scheduled Departure Time: 12:00 pm

Arrival

Raleigh/Durham (RDU)
May 22, 2025
Raleigh-Durham International Airport
Estimated Arrival Time:
03:50 pm
Terminal:
2
Gate:
D15
Scheduled Arrival Time: 03:50 pm
Baggage: 4
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.raleigh-durham-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:

- NH7030 - ANA All Nippon Airways

- NZ6551 - Air New Zealand

Additional Information

Which is the frequency of flight UA1821?
The flight UA1821 is scheduled to flight on daily basis.

Which is the distance of flight UA1821?
The distance between the two airports is 1041 miles.

Which is the flight time of flight UA1821?
The scheduled flight time gate to gate is: 02:50 hours.
The real flight time gate to gate on average is: 02:43 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 Houston: 2025-05-22 04:19:23
Current Time in Raleigh/Durham: 2025-05-22 05:19:23

Alternative Flights

The following airlines serves the same route between Houston and Raleigh/Durham:

Frontier Airlines
- Flight Number: F94610. (On Time performance: 60 - Average Delay: 17 minutes)

United Airlines
- Flight Number: UA1081. (On Time performance: 78 - Average Delay: 10 minutes)
- Flight Number: UA2478. (On Time performance: 89 - Average Delay: 0 minutes)
- Flight Number: UA2604. (On Time performance: 65 - Average Delay: 29 minutes)
- Flight Number: UA6148. (On Time performance: 92 - Average Delay: 6 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 May 01, 2025 to May 17, 2025, we have obtained these figures.
Total number of flights: 17
On Time: 16 ( 94 % )
Moderate Delay: 0 ( 0 % )
Significant Delay: 0 ( 0 % )
Major Delay: 1 ( 6 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 8 minutes.
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

Last Past Flights UA1821

Date
Departure
Arrival
Duration
Aircraft
Status
Wednesday
21 May
12:08 pm
Houston (IAH)
03:35 pm
Raleigh/Durham (RDU)
02h 27min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
20 May
12:00 pm
Houston (IAH)
03:32 pm
Raleigh/Durham (RDU)
02h 32min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
19 May
11:57 am
Houston (IAH)
03:33 pm
Raleigh/Durham (RDU)
02h 36min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
18 May
12:03 pm
Houston (IAH)
03:35 pm
Raleigh/Durham (RDU)
02h 32min
Boeing 737-900
Boeing 737-900
Landed - On-time
Saturday
17 May
12:01 pm
Houston (IAH)
03:47 pm
Raleigh/Durham (RDU)
02h 46min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
16 May
12:05 pm
Houston (IAH)
03:37 pm
Raleigh/Durham (RDU)
02h 32min
Boeing 737-900
Boeing 737-900
Landed - On-time
Thursday
15 May
12:03 pm
Houston (IAH)
03:42 pm
Raleigh/Durham (RDU)
02h 39min
Boeing 737-900
Boeing 737-900
Landed - On-time
Wednesday
14 May
12:00 pm
Houston (IAH)
03:42 pm
Raleigh/Durham (RDU)
02h 42min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
13 May
11:56 am
Houston (IAH)
03:31 pm
Raleigh/Durham (RDU)
02h 35min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
12 May
11:57 am
Houston (IAH)
03:31 pm
Raleigh/Durham (RDU)
02h 34min
Boeing 737-900
Boeing 737-900
Landed - On-time