The Frontier Cup, the independent baseball trophy in North America, is awarded annually to the league playoff champion at the end of each season.

Its largest period of growth followed in 2020–21, when six teams from the ceased Can-Am and New York–Penn leagues joined alongside an expansion franchise.

The Evansville Otters, the only one of the original eight franchises still playing today, is the longest tenured team in the league.

Eight teams have won more than one championship: Springfield in 1996 and 1998; Johnstown in 1995 (as the Steal) and in 2000 (as the Johnnies), Richmond Roosters in 2001 and 2002, Windy City in 2007 and 2008, the Joliet Slammers in 2011 and 2018, and the Evansville Otters in 2006 and 2016.

On June 20, 2000, Brian Tollberg debuted with the San Diego Padres, becoming the first player from the Frontier League to make it to the Majors.

The Chicago area has three teams (Joliet Slammers, Schaumburg Boomers and Windy City ThunderBolts), as does the New York area (New Jersey Jackals, Sussex County Miners, and New York Boulders), and St. Louis (Gateway Grizzlies), Cleveland (Lake Erie Crushers), Cincinnati (Florence Y'alls) and Pittsburgh (Washington Wild Things) each have one.

[9] This enables collaboration with MLB to jointly discuss marketing and promotional initiatives to grow, expand, and enhance the game of baseball.

The team, as chosen by fans in a contest, was named the Titans and will play at Raymond Chabot Grant Thornton Park.

In April 2021, the league announced that the Québec Capitales, the Trois-Rivières Aigles, and the Ottawa Titans would not compete in the 2021 season due to the prolonged closure of the Canada–United States border as a result of the ongoing COVID-19 pandemic.

The Titans, Aigles and Capitales later joined forces to form a new team that competed as a member of the Atlantic Division in the Can-Am Conference.

[18] In September 2023, the league announced a new team, the New England Knockouts, who were planned to play at Campanelli Stadium in Brockton, Massachusetts, beginning with the 2024 season.

Full training camps begin in early May, including a preseason consisting of four exhibition games.

The Frontier League playoffs, which go from early-to-late September, are an elimination tournament where two teams play against each other to win a series in order to advance to the next round.

[27] For players aged 23 and younger on standard contracts, only 50% of their salary counts towards the cap (up to $150,000 total).

With the addition of the Empire State Greys in 2022–23 as well as the New England Knockouts in 2024, the league operated with a total of 16 teams with only two divisions: East and West.

[30]On February 24, 2022, the Frontier League announced that all games for the 2022 season would be available through the streaming platform FloSports.