United Airlines UA521 Flight Status Today

Domestic flight United Airlines UA521 takes off from Atlanta (ATL) United States to Houston (IAH) United States. It's operated by United Airlines. The plane leaves Hartsfield-Jackson Atlanta International Airport at 15:57 09 April 2026 America/New_York. The flight is expected to land at George Bush Intercontinental Airport at 17:25 09 April 2026 America/Chicago. The flight will last about 2 hours 28 minutes.

Current status of UA521 is Scheduled On time Estimated Depart in 14 hours, 16 minutes

UA521 - UAL521 United Airlines (UA)
ATL Atlanta United States
Flight ATL to IAH
IAH Houston United States
Scheduled On time Estimated Depart in 14 hours, 16 minutes
Departure Hartsfield-Jackson Atlanta International Airport
IATA: ATLICAO: KATL
Scheduled 15:57 09 April 2026
Estimated 15:57 09 April 2026
N T20
Arrival George Bush Intercontinental Airport
IATA: IAHICAO: KIAH
Scheduled 17:25 09 April 2026
Estimated 17:25 09 April 2026
C 34
UA521 Detail
  • Type: Domestic Flight
  • Code Shares: EK 6006, NZ 6337
  • Flight Duration: 2 hours 28 minutes
  • Flight Distance: 1108 kms / 688 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 167
  • Freight capacity: 17.1 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Boeing 737-700 Passenger (Scimitar Winglets)
  • Callsign: F-KIDA2
  • Departure Timezone: America/New_York
  • Arrival Timezone: America/Chicago
  • Current Time in Atlanta: Thursday 2026-04-09 01:41 AM
  • Current Time in Houston: Thursday 2026-04-09 00:41 AM

United Airlines UA521 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA521
AIRPLANE Boeing 737-700 Passenger (Scimitar Winglets)
ON TIME 9
DELAYED 5
CANCELLED 0
ON TIME 25
DELAYED 5
CANCELLED 0
ON TIME 49
DELAYED 10
CANCELLED 0
ON TIME 65
DELAYED 12
CANCELLED 0
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA521 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Mon 06 Apr
Scheduled On time
Atlanta (ATL) 2026-04-06T15:57
Houston (IAH) 2026-04-06T17:25
Sat 04 Apr
Departed Delayed by 57m
Atlanta (ATL) 2026-04-04T18:42
Houston (IAH) 2026-04-04T23:40
2026-04-04T19:25
Fri 03 Apr
Scheduled On time
Atlanta (ATL) 2026-04-03T18:42
Houston (IAH) 2026-04-03T23:40
Thu 02 Apr
Scheduled On time
Atlanta (ATL) 2026-04-02T18:42
Houston (IAH) 2026-04-02T23:40
Wed 01 Apr
Scheduled On time
Atlanta (ATL) 2026-04-01T18:42
Houston (IAH) 2026-04-01T23:40
Mon 30 Mar
Scheduled On time
Atlanta (ATL) 2026-03-30T18:42
Houston (IAH) 2026-03-30T23:40
Sun 29 Mar
Scheduled On time
Atlanta (ATL) 2026-03-29T18:42
Houston (IAH) 2026-03-29T23:40
Sat 28 Mar
Scheduled On time
Atlanta (ATL) 2026-03-28T15:57
Houston (IAH) 2026-03-28T17:25
Mon 23 Mar
Scheduled On time
Atlanta (ATL) 2026-03-23T15:57
Houston (IAH) 2026-03-23T17:25
Sun 22 Mar
Scheduled On time
Atlanta (ATL) 2026-03-22T15:57
Houston (IAH) 2026-03-22T17:25

Flight routes similar to United Airlines UA521

Airline Flight no Departure Arrival
Emirates EK6006
Emirates 		09/04/2026
15:57 		2 hours 28 minutes
17:25
Korean Air KE6927
Korean Air 		09/04/2026
16:30 		2 hours 19 minutes
17:49
Air New Zealand NZ6330
Air New Zealand 		09/04/2026
07:00 		2 hours 21 minutes
08:21
Delta DL1988
Delta 		09/04/2026
12:35 		2 hours 19 minutes
13:54
KLM KL5231
KLM 		09/04/2026
22:40 		2 hours 19 minutes
23:59
Air France AF5640
Air France 		09/04/2026
19:53 		2 hours 16 minutes
21:09
LATAM Airlines LA6394
LATAM Airlines 		09/04/2026
09:55 		2 hours 22 minutes
11:17
WestJet WS6749
WestJet 		09/04/2026
16:30 		2 hours 19 minutes
17:49

United Airlines Flight UA521 FAQs

What is the scheduled flight duration for United Airlines UA521 flight?

On average, nonstop flight takes 2 hour(s) 28 minutes, with the flight distance of 1108 km (688 miles).

What is the current status of United Airlines UA521 flight?

The current status of flight United Airlines UA521 is Scheduled On time.

What type of aircraft is used for the United Airlines UA521 flight?

All United Airlines UA521 flights are operated using Boeing 737-700 Passenger (Scimitar Winglets) aircraft.

When does the flight United Airlines UA521 arrive?

Flight United Airlines UA521 arrives at 17:25.

Which terminal the flight United Airlines UA521 is arriving at?

Flight United Airlines UA521 arrives in George Bush Intercontinental Airport at Terminal C.

How many United Airlines UA521 flights are operated a week?

7 flights per week. The Flight United Airlines UA521 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .