After nearly 40 years of service, six F-111 fighter bombers have taken their final flight from Queensland's Amberley Air Force base.

The F-111 is known for its ability to get down low and fast for bombing runs, earning it the nickname 'the pig'.

Wing Commander Michael Gray says it is an honour to fly the aircraft for the last time.

"It's a sad day but our squadron's been around for more than 90 years, so it's important we remember that we change aircraft," he said.

"It's just that we've had this one for a very long time and we've all grown to know and love it."

The jets were bought during the Cold War and are being replaced with the FA18 Super Hornets.

The F-111s are best known for their impressive dump and burn and today was the last chance to see them in action.

"The pig is your typical Australian self-deprecating humour - it's actually a great aircraft to fly," Wing Commander Gray said.

"It certainly doesn't handle like a pig.

"We also spend a lot of time down low, with our nose in the weeds, and I think that's fairly fitting."

Four F-111s will end up on display at military museums and the 17 others will be scrapped.