The station signed on September 14, 1986, as Maine's first
independent station and the first new
commercial station to launch in the Portland
market in 32 years. After a few weeks as an independent, it became a charter affiliate with
Fox on October 9. In 1996, the station's original owner, Bride Communications, entered
bankruptcy and WPXT was sold to Pegasus Broadcasting. On October 7, 2001, WPXT switched to
The WB; the deal, which also included
WDBD in
Jackson, Mississippi, came after renewal negotiations between Fox and Pegasus broke down. A Fox spokesman said that the two stations "were not honoring the terms and conditions of the affiliate agreement", an assertion denied by WPXT staff. The WB had previously aired in off-hours on sister
UPN affiliate WPME (channel 35). The affiliation change left Maine with no over-the-air Fox affiliate until April 2003, when Portland's Pax TV affiliate WMPX-TV (now
WPFO) switched to the network and
WFVX-LP signed on as the first over-the-air Fox affiliate for the
Bangor area. In the interim, Fox's prime time and children's programming was only available on cable via
WFXT in
Boston (which was owned by the network at the time) for those living on the New Hampshire side of the market and via
Foxnet for those living in Maine;
WCKD-LP (which was initially expected to serve as the network's replacement Bangor affiliate) carried the network's sports programming during that time. Pegasus declared bankruptcy in June 2004 over a dispute with
DirecTV (then co-owned with Fox by
News Corporation) over marketing of the
direct broadcast satellite service in rural areas. The Pegasus station group was sold in August 2006 to private investment firm CP Media, LLC of
Wilkes-Barre, Pennsylvania, for $55.5 million. Eventually, CP Media formed a new broadcast company, New Age Media. As a WB affiliate, WPXT was originally branded on-air as "Maine's WB 51", but in 2004, changed to "Maine's WB" to reflect its status as the only over-the-air WB affiliate in the state. Although Bangor and
Presque Isle also had affiliates, they were only provided on cable through
The WB 100+ (a similar operation to Foxnet). On January 24, 2006,
Time Warner and
CBS Corporation announced that they would merge the broadcast operations of The WB and UPN to form
The CW Television Network. On March 9, it was announced WPXT would become Portland's CW affiliate. Later on May 1, it was made public sister station WPME would affiliate with
MyNetworkTV. With the new affiliation, WPXT's branding became "The CW Portland". In 2007, WPXT changed its on-air branding to reflect its call letters rather than a city. WPXT ceased analog transmission August 12, 2008, more than seven months prior to the original
Federal Communications Commission (FCC) digital switchover deadline of February 17, 2009, due to transmitter failure. On May 2, 2011, WPXT signed on a new second
digital subchannel to become the area's
MeTV affiliate. On November 7, 2016, Escape (now
Ion Mystery) was added to subchannel 51.3. New Age Media announced in March 2012 that it would sell WPXT to Tyche Broadcasting for $75,000. The deal was contingent on WPME's concurrent sale from MPS Media to Triumph Broadcasting. On November 9, 2012, WPXT filed a non-consummation notice to the FCC, meaning the transaction is nulled and void. On February 13, 2013, New Age Media filed to sell WPXT to Ironwood Communications for $1,525,000; the deal was concurrent with a planned sale of WPME to Cottonwood Communications. The FCC granted its approval of the sale on April 2. The sale was consummated on May 20. On March 22, 2018, MyNetworkTV, Escape and
Laff programming was moved to WPXT's respective third, fourth and fifth subchannels; the three networks had been carried by WPME, which was concurrently sold to
Ion Media Networks to become
WIPL, an
Ion Television owned-and-operated station.
Hearst Television announced its acquisition of WPXT on July 30, 2018; the $3,350,000 purchase created a
duopoly with
ABC affiliate
WMTW (channel 8). The sale was approved on September 12 and was completed on September 21, 2018; concurrently, WPXT changed its branding to "Maine's CW." The ownership change also resulted in a streamlining of subchannels between WMTW and WPXT the next month. With Hearst's preference for its main station in the market to carry the MeTV affiliation, MeTV and H&I exchanged places, with MeTV moving to WMTW-DT2 and H&I going to WPXT-DT2, and Laff going from WPXT-DT2 to WMTW-DT3, with Escape going to WPXT-DT3 (and the likely non-renewal of the
Katz Broadcasting network agreement; Hearst only tends to carry
Bounce TV from that provider). The syndicated programming formerly on WPXT-DT3's "WPME" service was removed, and MyNetworkTV programming now airs in place of H&I's prime time, an arrangement similar to the setup for the third subchannel of sister station
KCCI in
Des Moines, Iowa. In
2025, WPXT reached an agreement with the
Boston Red Sox to air four
spring training games. ==News operation==