I don't have anything for this season, but Chris Sale had the lowest ERA with 150.0+ innings pitched in 2024, with an ERA of 2.38.

Interpreted as:

lowest era by a player with minimum 150 ip this regular season

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Chris Sale C. Sale	2.38	177.2	2024	ATL	29	18	3	.857	29	225	0	0	0	141	47	48	9	39	8	0	0	702	4	11.40	1.98	5.77	0.46	32.1	5.6	1.01	.314	2.43	57	2.08	52	7.14	38.1
2	Tarik Skubal T. Skubal	2.39	192.0	2024	DET	31	18	4	.818	31	228	0	0	0	142	51	54	15	35	9	0	0	753	2	10.69	1.64	6.51	0.70	30.3	4.6	0.92	.273	2.53	60	2.49	61	6.66	33.5
3	Zack Wheeler Z. Wheeler	2.57	200.0	2024	PHI	32	16	7	.696	32	224	0	0	0	139	57	62	20	52	8	0	0	787	8	10.08	2.34	4.31	0.90	28.5	6.6	0.96	.246	2.79	62	3.12	75	6.26	22.4
4	Hunter Greene H. Greene	2.75	150.1	2024	CIN	26	9	5	.643	26	169	0	0	0	96	46	47	12	57	19	0	0	611	7	10.12	3.41	2.96	0.72	27.7	9.3	1.02	.237	2.81	63	3.47	81	5.75	13.5
5	Ronel Blanco R. Blanco	2.80	167.1	2024	HOU	30	13	6	.684	29	166	1	1	0	114	52	56	22	68	2	1	0	676	3	8.93	3.66	2.44	1.18	24.6	10.1	1.09	.220	3.01	70	4.14	102	6.13	-1.8
6	Shota Imanaga S. Imanaga	2.91	173.1	2024	CHC	29	15	3	.833	29	174	0	0	0	149	56	66	27	28	3	0	0	694	3	9.03	1.45	6.21	1.40	25.1	4.0	1.02	.264	3.43	73	3.71	93	7.74	5
7	Framber Valdez F. Valdez	2.91	176.1	2024	HOU	28	15	7	.682	28	169	1	0	0	140	57	60	13	55	6	0	0	703	8	8.63	2.81	3.07	0.66	24.0	7.8	1.11	.276	3.06	73	3.24	80	7.15	15.9
8	Corbin Burnes C. Burnes	2.92	194.1	2024	BAL	32	15	9	.625	32	181	0	0	0	165	63	76	22	48	2	0	0	784	7	8.38	2.22	3.77	1.02	23.1	6.1	1.10	.269	3.52	74	3.54	88	7.64	10.1
9	Bryce Miller B. Miller	2.94	180.1	2024	SEA	31	12	8	.600	31	171	0	0	0	131	59	62	21	45	3	0	1	704	2	8.53	2.25	3.80	1.05	24.3	6.4	0.98	.237	3.09	78	3.58	91	6.54	6.9
10	Michael King M. King	2.95	173.2	2024	SDP	31	13	9	.591	30	201	0	0	0	144	57	71	17	63	7	0	2	726	1	10.42	3.26	3.19	0.88	27.7	8.7	1.19	.290	3.68	74	3.33	83	7.46	13.4
11	Seth Lugo S. Lugo	3.00	206.2	2024	KCR	33	16	9	.640	33	181	1	0	0	177	69	75	16	48	9	0	1	836	4	7.88	2.09	3.77	0.70	21.7	5.7	1.09	.277	3.27	71	3.24	79	7.71	19.4
12	Tanner Houck T. Houck	3.12	178.2	2024	BOS	30	9	10	.474	30	154	1	1	0	156	62	75	11	48	16	0	1	743	2	7.76	2.42	3.21	0.55	20.7	6.5	1.14	.282	3.78	73	3.31	80	7.86	16.1
13	Cole Ragans C. Ragans	3.14	186.1	2024	KCR	32	11	9	.550	32	223	1	0	0	146	65	71	15	67	6	0	1	762	11	10.77	3.24	3.33	0.72	29.3	8.8	1.14	.290	3.43	75	2.99	73	7.05	22.8
14	Jack Flaherty J. Flaherty	3.17	162.0	2024	TOT	28	13	7	.650	28	194	0	0	0	135	57	61	24	38	4	0	0	649	6	10.78	2.11	5.11	1.33	29.9	5.9	1.07	.285	3.39	79	3.47	85	7.50	11.1
15	Logan Gilbert L. Gilbert	3.23	208.2	2024	SEA	33	8	12	.400	33	220	1	0	0	148	75	83	26	37	4	0	1	803	11	9.49	1.60	5.95	1.12	27.4	4.6	0.89	.236	3.58	86	3.26	83	6.38	15.6
16	Max Fried M. Fried	3.25	174.1	2024	ATL	29	11	10	.524	29	166	2	1	0	146	63	71	13	57	7	0	0	714	6	8.57	2.94	2.91	0.67	23.2	8.0	1.16	.282	3.67	78	3.33	84	7.54	12.7
17	Jameson Taillon J. Taillon	3.27	165.1	2024	CHC	28	12	8	.600	28	125	0	0	0	154	60	67	21	33	1	0	0	675	4	6.80	1.80	3.79	1.14	18.5	4.9	1.13	.269	3.65	82	3.92	98	8.38	1
18	Erick Fedde E. Fedde	3.30	177.1	2024	TOT	31	9	9	.500	31	154	0	0	0	154	65	66	20	52	5	0	0	726	3	7.82	2.64	2.96	1.02	21.2	7.2	1.16	.271	3.35	81	3.85	93	7.82	5.5
19	Cristopher Sánchez C. Sánchez	3.32	181.2	2024	PHI	31	11	9	.550	31	153	2	1	0	182	67	76	11	44	0	0	0	754	7	7.58	2.18	3.48	0.54	20.3	5.8	1.24	.313	3.77	80	2.99	72	9.02	22.9
20	Michael Wacha M. Wacha	3.35	166.2	2024	KCR	29	13	8	.619	29	145	0	0	0	154	62	65	17	45	5	0	1	685	3	7.83	2.43	3.22	0.92	21.2	6.6	1.19	.290	3.51	79	3.65	89	8.32	8.2
21	Ranger Suárez R. Suárez	3.46	150.2	2024	PHI	27	12	8	.600	27	145	1	1	0	140	58	63	14	41	5	0	1	626	1	8.66	2.45	3.54	0.84	23.2	6.5	1.20	.299	3.76	84	3.36	81	8.36	12.9
22	Sean Manaea S. Manaea	3.47	181.2	2024	NYM	32	12	6	.667	32	184	0	0	0	134	70	75	21	63	9	0	0	738	4	9.12	3.12	2.92	1.04	24.9	8.5	1.08	.245	3.72	87	3.83	95	6.64	3.8
23	Dylan Cease D. Cease	3.47	189.1	2024	SDP	33	14	11	.560	33	224	1	1	0	137	73	80	18	65	2	0	0	762	12	10.65	3.09	3.45	0.86	29.4	8.5	1.07	.263	3.80	88	3.09	77	6.51	19.6
24	Tanner Bibee T. Bibee	3.47	173.2	2024	CLE	31	12	8	.600	31	187	0	0	0	150	67	70	22	44	8	0	0	710	2	9.69	2.28	4.25	1.14	26.3	6.2	1.12	.285	3.63	87	3.55	88	7.77	9.6
25	Logan Webb L. Webb	3.47	204.2	2024	SFG	33	13	10	.565	33	172	1	1	0	202	79	83	11	50	2	0	3	841	4	7.56	2.20	3.44	0.48	20.5	5.9	1.23	.315	3.65	87	2.94	75	8.88	22.3