UA40 United Airlines - Flight Status
Codeshare Flights
The flight AC4991 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA40. Check this page for details about flight UA40.
Warning
This flight has been diverted and landed in a different airport than scheduled. Contact airline to obtain more information. This was the original destination:
Rome (FCO) - Rome Leonardo da Vinci Fiumicino Airport
There is more than one flight with the same flight number on the same day. This is the other flight:
UA40 Newark (EWR) to Rome (FCO) Departure: 20:30 Arrival: 11:24 Check flight
Below, you can find details about United Airlines flight UA40, which currently operates between the airports of Newark - Newark Liberty International Airport (Airport Code EWR) and Newark - Newark Liberty International Airport (Airport Code EWR).
This flight data pertains specifically to the flight's details for Thursday, May 21, 2026.
UA40 On Time performance:
84
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
UA40 United Airlines from Newark
Scheduled - On-time
Flight Status for Thursday May 21, 2026
Scheduled - On-time
Flight Status for Thursday May 21, 2026
Airline information
United Airlines
Equipment: Boeing 777-300ER
Departure
Newark (EWR)
May 20, 2026
Newark Liberty International Airport
Estimated Departure Time:
17:25
Terminal:
C
Gate:
C123
Scheduled Departure Time: 17:05
Arrival
Newark (EWR)
May 21, 2026
Newark Liberty International Airport
Estimated Arrival Time:
03:20
Terminal:
3
Gate:
C98
Scheduled Arrival Time: 07:35
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.roma-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:
- AC4991 - Air Canada
- LH7616 - Lufthansa
- LX3029 - Swiss
- OS7892 - Austrian
- SN9017 - Brussels Airlines