The Philadelphia Flyers had their best power-play percentage in a season in 1980-81, at 27.0 percent.

when did the flyers have their best power play percentage in a season

TEAM	PP%	SEASON	GP	W	L	T	OTL	PTS	PTS%	G	GA	PK%	S/GP	SA/GP
Philadelphia Flyers	27.0	1980-81	80	41	24	15		97	.606	313	249	80.2	33.09	28.99
Philadelphia Flyers	26.7	1988-89	80	36	36	8		80	.500	307	285	81.5	29.86	30.55
Philadelphia Flyers	26.5	1981-82	80	38	31	11		87	.544	325	313	73.3	34.01	29.99
Philadelphia Flyers	25.4	1978-79	80	40	25	15		95	.594	281	248	79.0	31.74	25.58
Philadelphia Flyers	23.6	1985-86	80	53	23	4		110	.688	335	241	82.8	34.13	28.89
Philadelphia Flyers	23.6	1977-78	80	45	20	15		105	.656	296	200	80.6	32.94	25.50
Philadelphia Flyers	23.4	2014-15	82	33	31		18	84	.512	212	223	77.1	29.43	30.26
Philadelphia Flyers	22.5	2008-09	82	44	27		11	99	.604	260	232	83.0	29.77	32.54
Philadelphia Flyers	22.3	1984-85	80	53	20	7		113	.706	348	241	79.8	33.70	29.83
Philadelphia Flyers	21.8	2007-08	82	42	29		11	95	.579	245	227	83.2	28.77	31.82
Philadelphia Flyers	21.7	1982-83	80	49	23	8		106	.663	326	240	81.8	34.46	26.44
Philadelphia Flyers	21.6	2012-13	48	23	22		3	49	.510	132	139	85.9	29.04	28.56
Philadelphia Flyers	21.5	2009-10	82	41	35		6	88	.537	232	222	83.0	31.57	28.61
Philadelphia Flyers	20.8	2019-20	69	41	21		7	89	.645	227	191	81.8	31.39	28.65
Philadelphia Flyers	20.8	1993-94	84	35	39	10		80	.476	294	314	80.7	28.68	31.70
Philadelphia Flyers	20.7	2003-04	82	40	21	15	6	101	.616	229	186	83.3	29.40	25.51
Philadelphia Flyers	20.7	2017-18	82	42	26		14	98	.598	249	236	75.8	32.09	29.85
Philadelphia Flyers	20.3	1999-00	82	45	22	12	3	105	.640	237	179	86.7	30.43	23.65
Philadelphia Flyers	20.2	1983-84	80	44	26	10		98	.613	350	290	76.6	36.75	28.65
Philadelphia Flyers	20.1	1990-91	80	33	37	10		76	.475	252	267	80.9	28.55	28.68
Philadelphia Flyers	19.7	2013-14	82	42	30		10	94	.573	233	227	84.8	30.37	30.59
Philadelphia Flyers	19.7	2011-12	82	47	26		9	103	.628	260	225	81.8	32.21	28.40
Philadelphia Flyers	19.7	1995-96	82	45	24	13		103	.628	282	208	85.8	30.85	25.89
Philadelphia Flyers	19.6	1994-95	48	28	16	4		60	.625	150	132	80.8	27.38	26.85
Philadelphia Flyers	19.5	2016-17	82	39	33		10	88	.537	212	231	79.8	31.52	28.46