[5] The IFL has a player personnel partnership with the UFL, to function as their de facto minor league.

After playing nine games of the 2010 season the Alaska Wild suspended operations, leaving only 24 teams to finish the year.

For the 2012 season, the IFL switched to a two-conference format with no divisions,[7] due in large part to the loss of all the Texas-based teams (except the Allen Wranglers) to the newly formed Lone Star Football League.

ESPN3 carried Owens's debut game against the Wichita Wild, but his association with the team and the league proved to be short-lived.

[10] On July 27, 2014, Iowa Barnstormers president Jeff Lamberti hinted at joining the league by telling a local TV station that the franchise will explore "all options" in the off-season of their continuance to play, including leaving the Arena Football League and going to the IFL for 2015.

This was the first season the IFL utilized roster restrictions which call for all teams to carry no more than seven players with three or more years' experience in Indoor/Arena football.

[18] However, on January 29, just four weeks before the 2016 season was to kick off, the Havok were terminated by the league for failing to meet operational standards.

On October 24, 2016, the Wolves announced they had left the IFL because of state regulations and failing to find new ownership for the team.

[23] On October 17, 2016, the IFL announced it had added the Arizona Rattlers, previously of the Arena Football League, for the 2017 season.

The league rejected the bid of another former AFL franchise, the Jacksonville Sharks, who are located outside the IFL's regional territory.

Project FANchise, which also ran the Salt Lake Screaming Eagles, had announced they would start their own league and left the IFL, with both teams going up for sale.

[27] On July 25, 2017, the IFL announced that only the Arizona Rattlers, Cedar Rapids Titans, Green Bay Blizzard, Iowa Barnstormers, and Nebraska Danger had committed to play for 2018.

[29] On August 30, the Sioux Falls Storm announced that they had joined Champions Indoor Football for 2018 after winning six consecutive championships from 2011 to 2016.

A temporary injunction from participation in the league was granted on January 31, 2018, with the court ruling determining that both teams had been offered bribes from the owner of the Arizona Rattlers to break their contract with the CIF.

[43] The addition of the Sugar Skulls and Strike Force gave the Rattlers geographic rivals, reducing that team's travel expenses in a league otherwise centered in the upper Midwest.

On August 20, 2019, the Duke City Gladiators joined the IFL after winning back-to-back CIF championships.

[44] On September 10, the Oakland Panthers, co-owned by former NFL running back Marshawn Lynch, joined the IFL for the 2020 season.

[56] The 2020 expansion Oakland Panthers,[57] as well as the Cedar Rapids River Kings, Quad City Steamwheelers, and the San Diego Strike Force withdrew from the season due to the effects of the pandemic.

[60] On June 14, the IFL terminated the Xtreme's membership after five games played due to failing to maintain the league's minimum obligations and did not finish the season.

[62] In October 2021, the league updated its website, removing the Cedar Rapids River Kings and Columbus Wild Dogs.

[63] On February 24, 2022, the Spokane Shock were removed from the league after the team lost its lease for their home arena.

The Bay Area Panthers won the 2023 Championship defeating the Sioux Falls Storm 51–41 after going 1–15 in the previous year.

[71] While the Bismarck Bucks will stay idle for another season, the Scheels Arena will host the "Fargo-IFL Gridiron Classic" between Sioux Falls Storm and Massachusetts Pirates.

[74] Starting in 2024, the league has a theme song for all games – "The Indoor War" by Sioux Falls-based musician Denham.

[75] On October 16, 2024, the IFL announced that the Duke City Gladiators and Frisco Fighters would sit out the 2025 season, both looking to return to play in 2026.

[76] On October 30, 2024, the Sioux Falls Storm announced they would sit out the 2025 season after their home arena did not renew the team's lease.

The current IFL champions are the Arizona Rattlers, who won the championship game in 2024 defeating Massachusetts in Las Vegas.

The UIF held United Bowl I, II, III, and IV in 2005 through 2008, with all four being won by the Sioux Falls Storm.

Instead, it is more similar to the Arena Football Hall of Fame in that the inductees are enshrined online and without a physical location.