Factual error: When browsing for information about the crow deaths in the Ganwar Region of Somalia, the computer indicates that the CDC requested additional funding from DHS. The only problem with that is, DHS was formed in 2002, 11 years after the incident in Ganwar.
Factual error: There is a scene which shows the Blackbird population as a graph on the computer monitor. On the day of the FlashForward event, this graph shows the Blackbird population dying off in October, but there is a mistake because the graph also shows "November" and "December" values which did not yet occur.
Other mistake: At the beginning of the scene on the plane, Zoey is sending a text message to Demetri. When her phone is in the shot, what is shown on its display screen is obviously edited, because she makes the mistake of pressing the "end call" instead of the "send call" button to send the message.