Rail operator Virgin Trains had warned that the nominated 5.15pm kick-off would make hard for supporters to return from the Wembley final on their services and fans' groups are known to prefer earlier start times.
But the FA, who moved the final to the later time for last year's showpiece between Chelsea and Liverpool, do not believe it will cause widespread disruption on May 11.
An FA statement read: "In relation to the information announced for the kick-off time of The FA Cup with Budweiser Final, the FA would like to highlight that 5.15pm is a regular kick-off time in the football calendar.
"This time was agreed with major stakeholders and broadcasters and has been used across the game for a number of years for televised matches.
"In terms of transportation, a small percentage of Cup Final fans use the method of train travel.
"Additional coach services which National Express are running, including directly from Wembley Stadium, mean there are more options for fans returning north after the game.
"The kick-off time is unchanged from last year and this allows more football fans around the country to watch the Cup Final in its entirety."
- Sports & Recreation