4 teams are tied for losing the most games in overtime in a season, with 18 losses. The first three are the Philadelphia Flyers in 2014-15, the New Jersey Devils in 2013-14 and the Florida Panthers in 2011-12.

which team has the most overtime losses in a season

TEAM	OTL	SEASON	GP	W	L	PTS	PTS%	G	GA	PP%	PK%	S/GP	SA/GP
Philadelphia Flyers	18	2014-15	82	33	31	84	.512	212	223	23.4	77.1	29.43	30.26
New Jersey Devils	18	2013-14	82	35	29	88	.537	197	195	19.5	86.4	26.82	25.48
Florida Panthers	18	2011-12	82	38	26	94	.573	197	216	18.5	79.5	29.67	30.55
Tampa Bay Lightning	18	2008-09	82	24	40	66	.402	207	269	17.8	78.0	28.51	32.94
Calgary Flames	17	2022-23	82	38	27	93	.567	258	247	19.8	82.6	35.95	27.32
Montreal Canadiens	16	2023-24	82	30	36	76	.463	232	281	17.5	76.5	27.67	33.40
New York Islanders	16	2023-24	82	39	27	94	.573	245	258	20.3	71.5	30.12	32.76
San Jose Sharks	16	2022-23	82	22	44	60	.366	233	315	18.4	82.4	29.45	32.20
Carolina Hurricanes	16	2015-16	82	35	31	86	.524	196	221	16.8	84.3	29.89	27.57
Montreal Canadiens	16	2011-12	82	31	35	78	.476	207	214	14.3	88.6	28.54	29.66
Calgary Flames	16	2011-12	82	37	29	90	.549	199	217	17.7	84.3	27.54	30.83
Carolina Hurricanes	16	2011-12	82	33	33	82	.500	212	237	16.7	80.6	30.45	32.35
Florida Panthers	16	2006-07	82	35	31	86	.524	245	249	18.1	82.4	33.29	29.29
Boston Bruins	16	2005-06	82	29	37	74	.451	228	258	14.8	83.7	30.62	32.11
Boston Bruins	15	2023-24	82	47	20	109	.665	263	221	22.2	82.5	29.22	30.54
Columbus Blue Jackets	15	2019-20	70	33	22	81	.579	180	183	16.4	81.7	32.46	29.89
Toronto Maple Leafs	15	2016-17	82	40	27	95	.579	250	234	23.8	82.5	31.91	32.60
Carolina Hurricanes	15	2016-17	82	36	31	87	.530	212	230	17.7	84.2	30.40	28.29
Los Angeles Kings	15	2014-15	82	40	27	95	.579	218	197	19.0	80.9	30.93	27.00
Florida Panthers	15	2014-15	82	38	29	91	.555	198	213	16.3	80.0	30.68	29.56
Chicago Blackhawks	15	2013-14	82	46	21	107	.652	261	212	19.5	81.5	33.11	27.18
Detroit Red Wings	15	2013-14	82	39	28	93	.567	217	221	17.7	83.1	29.95	29.28
Phoenix Coyotes	15	2013-14	82	37	30	89	.543	210	224	19.9	79.0	30.48	30.99
Los Angeles Kings	15	2011-12	82	40	27	95	.579	188	170	17.0	87.0	30.60	27.41
Columbus Blue Jackets	15	2009-10	82	32	35	79	.482	214	249	18.2	81.7	28.51	30.66