| | C | Called up from minors (The Calgary Flames recalled F Kevin Rooney from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Alex Gallant from the minors.) |
| | LW | Sent to minors (The Calgary Flames assigned F Aydar Suniev to the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Rory Kerins from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Cole Schwindt from the minors.) |
| | LW | Called up from minors (The Calgary Flames recalled F William Stromgren from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Nathan Pilling from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Mikael Diotte from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Martin Pospisil from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Colton Poolman from the minors.) |
| | G | Sent to minors (The Calgary Flames assigned G Yegor Yegorov to the minors.) |
| | G | Called up from minors (The Calgary Flames recalled G Oscar Dansk from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Charles Cote from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Nick DeSimone from the minors.) |
| | RW | Called up from minors (The Calgary Flames recalled F Oliver Tulk from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Ilya Solovyov from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Yan Kuznetsov from the minors.) |
| | RW | Called up from minors (The Calgary Flames recalled F Walker Duehr from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Jonathan Aspirot from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Brett Sutter from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Brady Lyle from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Ilya Nikolaev from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Donovan McCoy from the minors.) |
| | D | Sent to minors (The Calgary Flames assigned D Axel Hurtig to the minors.) |
| | LW | Called up from minors (The Calgary Flames recalled F Jakob Pelletier from the minors.) |
| | LW | Called up from minors (The Calgary Flames recalled F Dryden Hunt from the minors.) |
| | LW | Called up from minors (The Calgary Flames recalled F Lucas Ciona from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Jeremie Poirier from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Tyson Galloway from the minors.) |
| | LW | Called up from minors (The Calgary Flames recalled F Mitch McLain from the minors.) |
| | RW | Called up from minors (The Calgary Flames recalled F Adam Klapka from the minors.) |
| | | Called up from minors (The Calgary Flames recalled D Quinn Mantei from the minors.) |
| | C | Called up from minors (The Calgary Flames recalled F Connor Zary from the minors.) |
| | G | Called up from minors (The Calgary Flames recalled G Dustin Wolf from the minors.) |
| | D | Called up from minors (The Calgary Flames recalled D Jarrod Gourley from the minors.) |
| | LW | Signed (The Calgary Flames signed F Parker Bell to an entry-level contract.) |
| | C | Signed (The Calgary Flames signed F Mathias Emilio Pettersen to a two-way contract.) |
| | C | Signed (The Calgary Flames signed F Ben Jones to a two-way contract.) |
| | D | Signed (The Calgary Flames signed D Jordan Oesterle.) |
| | | Signed (The Calgary Flames signed G Matt Radomsky.) |
| | LW | Became Unrestricted Free Agent (F Milan Lucic elected free agency.) |
| | C | Became Unrestricted Free Agent (F Trevor Lewis elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Nick Ritchie elected free agency.) |
| | D | Became Unrestricted Free Agent (D Troy Stecher elected free agency.) |
| | D | Became Unrestricted Free Agent (D Michael Stone elected free agency.) |
| | D | Drafted (The Calgary Flames drafted D Etienne Morin.) |
| | LW | Drafted (The Calgary Flames drafted LW Aydar Suniev.) |
| | D | Drafted (The Calgary Flames drafted D Axel Hurtig.) |
| | C | Drafted (The Calgary Flames drafted F Jaden Lipinski.) |
| | G | Drafted (The Calgary Flames drafted G Yegor Yegorov.) |
| | LW | Drafted (The Calgary Flames drafted F Samuel Honzek.) |
| | RW | Traded (The Calgary Flames traded F Tyler Toffoli to the New Jersey Devils.) To |
| | C | Traded (The New Jersey Devils traded F Yegor Sharangovich to the Calgary Flames.) From |
| | C | Re-Signed (The Calgary Flames re-signed F Clark Bishop to a two-way contract.) |
| | RW | Sent to minors (The Calgary Flames assigned F Walker Duehr to the minors.) |
| | LW | Sent to minors (The Calgary Flames assigned F Jakob Pelletier to the minors.) |
| | G | Sent to minors (The Calgary Flames assigned G Dustin Wolf to the minors.) |
| | G | Called up from minors (The Calgary Flames recalled G Dustin Wolf.) |
| | D | Activated (The Calgary Flames activated D Michael Stone from injured reserve.) |
| | RW | Signed (The Calgary Flames signed F Matthew Coronato.) |
| | D | Sent to minors (The Calgary Flames assigned D Kristians Rubins to the minors.) |
| | D | Traded (The Calgary Flames acquired D Kristians Rubins from Ottawa.) From |
| | RW | Sent to minors (The Calgary Flames sent F Walker Duehr to the minors.) |
| | LW | Sent to minors (The Calgary Flames sent F Jakob Pelletier to the minors.) |
| | RW | Traded (The Arizona Coyotes acquired F Brett Ritchie from Calgary.) To |
| | LW | Traded (The Calgary Flames acquired F Nick Ritchie from Arizona.) From |
| | D | Traded (The Arizona Coyotes acquired D Connor Mackey from Calgary.) To |
| | D | Traded (The Calgary Flames acquired D Troy Stecher from Arizona.) From |