B737-700
Dispatch Dispatcher
Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
General None Reported / Taken
Equipment / Tooling
I took the pass down and was told there was 1 flight remaining and no issues. When I logged into my desk; I researched why [my] flight did not have out or off times in the system. Based on their scheduled departure time they should have already been airborne. I looked for the flight on my fusion screen and it was not visible. I called Operations to ask for verification and was given the out and off times for the mentioned flight. I then checked flightaware.com for the location of the flight and saw that it was crossing the Mexican border. I then proceeded to try to contact the flight via ACARS; but received the message 'ACARS free text could not be delivered at this time.' I then tried to establish communication with flight via ARINC phone patch. ARINC was also unsuccessful in contacting the crew. I tried ACARS several more times but got the same undeliverable message. I informed the Chief of Dispatch about the situation. I was unable to establish communications with the crew for the duration of the flight. I verified that the flight landed safely with Operations.
Air carrier Dispatcher reported he was unable to establish contact with his flight.