KDAL began broadcasting in color in 1965. The LeMasurier family sold KDAL-AM-TV to what eventually became Tribune Broadcasting in 1960. During the late-1950s, KDAL was also briefly affiliated with the NTA Film Network. The station's original studio facilities were located with KDAL Radio in the Bradley Building (demolished) moved to West Superior Street in downtown Duluth in the mid-1960s. It also aired some ABC programs in off-hours, splitting them with WDSM-TV, until WDIO-TV signed-on in 1966. It switched affiliations with WDSM-TV (now KBJR) in 1955 and joined CBS. It took its calls from the initials of its founder, Dalton Alexander LeMasurier, who owned the station along with KDAL/610. KDLH began broadcasting on Maas KDAL-TV and aired an analog signal on VHF channel 3. Following the end of KDLH's SSA on Aug(resulting from the station's sale from Malara Broadcast Group, concurrent with the sale of KBJR by Granite Broadcasting), CBS programming was moved to KBJR-DT2 and KDLH switched exclusively to The CW. In its latter years, it was operated by Quincy Media through a shared services agreement (SSA) with then-owner SagamoreHill Broadcasting, making it sister to KBJR and KRII. Throughout most of the station's history, KDLH had long been the Twin Ports' CBS affiliate. The two stations share studios on South Lake Avenue in Canal Park, downtown Duluth KDLH's transmitter is located west of downtown in Hilltop Park.

It is owned by Gray Television alongside Superior, Wisconsin–licensed dual NBC/ CBS affiliate KBJR-TV, channel 6 (and its Chisholm, Minnesota–licensed semi-satellite KRII, channel 11). KDLH (channel 3) is a television station in Duluth, Minnesota, United States, affiliated with The CW Plus.

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