In 1985, LEGO released 3 Town Flight sets, all of these sets have been retired. For that year, the total price of all retail sets cost $91, today those sets are valued around $2,423, a growth of 2562%.
Most valuable 1985 LEGO Town Flight set
6392 Airport $1,110.37
Highest growth 1985 Town Flight set
6377 Delivery Center +4038.82%
3 sets

6368 Jet Airliner

Theme / Subtheme Town / Flight
Year 1985
Pieces / Minifigs 136 / 2
Availability Retired
6368 LEGO Flight Jet Airliner
Retail $12.75
Value $257.03
Growth  +1915.9%
Annual growth 4.1%

6377 Delivery Center

Theme / Subtheme Town / Flight
Year 1985
Pieces / Minifigs 305 / 4
Availability Retired
6377 LEGO Flight Delivery Center
Retail $25.50
Value $1,055.40
Growth  +4038.8%
Annual growth 6.1%

6392 Airport

Theme / Subtheme Town / Flight
Year 1985
Pieces / Minifigs 530 / 8
Availability Retired
6392 LEGO Flight Airport
Retail $52.75
Value $1,110.37
Growth  +2005.0%
Annual growth 6.0%