Complete list of Philadelphia major pro sports championships from 1900, as best I can reconstruct:
1910 - Athletics [later Kansas City, now Oakland] win World Series
1911 - Athletics win World Series
1913 - Athletics win World Series
1929 - Athletics win World Series
1930 - Athletics win World Series
1947 - Warriors [now Golden State] win NBA title
1948 - Eagles win NFL championship
1949 - Eagles win NFL championship
1956 - Warriors win NBA title
1960 - Eagles win NFL championship
1967 - 76ers win NBA title
1973 - Atoms win NASL title
1974 - Flyers win Stanley Cup
1975 - Flyers win Stanley Cup
1980 - Phillies win World Series
1983 - 76ers win NBA title
1984 - Stars win USFL title
...so as you can see, it's been a while since they've had a championship parade up there....