McGillis was acquired from Edmonton along with a 1998 second-round Entry Draft selection for Janne Niinimaa, March 24, 1998.

• In the marathon 5-OT playoff game, May 4, 2000, McGillis led the Flyers in ice time, playing 61:05 of a possible 152:01
• His 264 hits in 1999-2000 was best on the team
• His 220 hits in 1998-99 was best on the team and seventh highest in the NHL
• In his 200th career game he recorded the game-winning goal (January 30, 1999 versus Tampa)
• Had career highs in assists and points in 1998-99 (37 assists; 45 points)

Year	Season	Games	Goals	Assists	Points	PIM
97-98	Regular	13	01	05	06	35
	Playoffs	05	01	02	03	10
98-99	Regular	78	8	37	45	61
	Playoffs	06	00	01	01	12
99-00	Regular	68	04	14	18	55
	Playoffs	10	02	04	06	08
Totals	Regular	159	13	56	69	151
	Playoffs	21	03	07	10	30