Flag Football (IFAF) Rules Explained

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Flag Football (IFAF) Rules Explained | OpenSourceSports

Full Rulebook(11 sections)

Plain-English summary drawn from the official rulebook — great for getting started. For competitive or formal play, see the Complete Rulebook. Hover any rule to see its source sentence.

Overview

IFAF flag football is played 5-on-5 under a global ruleset that serves as the international standard, administered through national governing bodies such as USA Football and GBAF. The IFAF hosts the Flag Football World Championship every two years and oversees the Olympic qualification pathway. The sport makes its Oly…

How to win

Touchdown: 6 points; Extra point (PAT): 1 point from 5-yard line, 2 points from 10-yard line; Safety: 2 points (+ posse…
Touchdown — Scoring a touchdown is worth 6 points.
Extra point (PAT): 1 point from 5-yard line, 2 points from 10-yard line
Safety: 2 points — Awards 2 points and gives possession to the scoring team.
Defensive TD scores 6 — Interception returned for TD (pick-6) or fumble return scores 6 points.

The game

5 players per side on the field; Roster: 12 players per game roster (some events allow up to 15); Substitutions: unlimi…
5 players per side on the field
Roster size — 12 players per game; some events permit up to 15.
Substitutions: unlimited between plays
Officials: 3-person crew (referee, line judge, deep judge); 4-5 at World Championship + Olympic level

Cultural norms — not in the rulebook. These are widely understood traditions and expectations among experienced Flag Football players. Not enforced by referees; enforced by the game’s community. Rules marked ⚡ Contested are genuinely debated even among veterans.

🚨 Cardinal Rule— Serious violation — may trigger retaliation or social exclusion

Never claim a flag pull you didn't make ('ghost flagging')
— Verbally or physically signaling a flag pull when you clearly missed the flag is considered the cardinal integrity violation of flag football. It directly robs the offense of yards and exploits the sport's reliance on honest self- or honor-calls. At competitive and recreational levels alike, ghost flagging is viewed as cheating rather than gamesmanship.(Most damaging in games without full officiating crews, but even with officials present, faking or embellishing a pull is seen as deeply unsportsmanlike across the flag football community.)[1]

⚠️ Strong Expectation— Most experienced players will take notice and be upset

Don't drive into the quarterback after the ball is released
— Even in non-contact flag football, defenders are expected not to aggressively run through the QB after a throw. Making unnecessary contact after the ball has left the quarterback's hand is considered cheap, potentially injurious, and contrary to the spirit of the game regardless of whether an official throws a flag.(At elite speed levels some unavoidable close contact occurs; the unwritten rule concerns intent—coverage proximity is not a license to use the QB as a target.)

Section 1: Introduction

The International Federation of American Football (IFAF) governs international flag football, including the IFAF Flag Football World Championship (every 2 years) and qualification pathway for the 2028 Los Angeles Olympic Games, where flag football debuts as an Olympic medal sport. The IFAF 5-on-5 ruleset is the global standard for international play, differing in some details from the NFHS variant used in U.S. high schools. IFAF rules are administered through national governing bodies (e.g., USA Football for the U.S., GBAF for Great Britain). See the sibling NFHS Flag Football Rules entry for the U.S. high school variant.

Section 2: Equipment

Ball: IFAF-approved adult football (men's intermediate/youth size for women)
Flag belt: two-flag belt (one on each hip); flags 14-16" long, "pop"-style detach
No pads, no helmets — non-contact sport
Mouthguards recommended (mandatory in some national federations)
Cleats: rubber or molded only
Numbered jerseys; contrasting team colors

Section 3: Playing Area

Field: 50 yards × 25 yards (with two 10-yard end zones, total 70 yards) — shorter than NFHS
Marked midfield line for first-down advancement
5-yard no-rush zone before line of scrimmage (defense)
Marked end-zone pylons + sidelines

Section 4: Players & Officials

5 players per side on the field
Roster: 12 players per game roster (some events allow up to 15)
Substitutions: unlimited between plays
Officials: 3-person crew (referee, line judge, deep judge); 4-5 at World Championship + Olympic level
Replay review at IFAF-sanctioned championships

Section 5: Rules of Play

Game Length

Two 20-minute halves (running clock; clock-stops in final 2 minutes of each half)
2-minute half-time
OT: alternating possessions from 5-yard line

Possession

Each possession starts at offense's own 5-yard line
Offense has 4 downs to reach midfield → fresh set of 4 downs to score
Coin toss for possession

Plays

QB must release ball within 7 seconds (some events 4 seconds for "no-rush" defense)
Forward pass only behind line of scrimmage
Defense rush only from 7+ yards back, or single designated rusher
Backward laterals permitted

Down a Player

Ball-carrier is down when defender removes either hip flag
Knee-down, ball-out-of-bounds, or flag falls off naturally = play dead
No contact: no blocking, no diving, no tackling — flag-pull only

Section 6: Scoring

Touchdown: 6 points
Extra point (PAT): 1 point from 5-yard line, 2 points from 10-yard line
Safety: 2 points (+ possession to scoring team)
Defensive TD (pick-6 or fumble return): 6 points
Tiebreaker: 5-yard line alternating-possession until decided

Section 7: Violations & Penalties

Flag-guarding (offense): 5-yard penalty + loss of down
Illegal contact (offense/defense): 10-yard penalty
Defensive holding / illegal flag pull: 5-yard penalty + automatic first down
Pass interference (offense / defense): 10-yard penalty (+ automatic 1D for defensive)
Delay of game: 5-yard penalty
Personal foul / unsportsmanlike: 10-yard penalty; second = ejection
Stripping / horse-collar: 10-yard penalty + automatic first down

Section 8: Safety Considerations

Non-contact ruleset eliminates tackle-football collision risk. Penalty structure aggressively penalizes contact, flag-guarding, and dangerous play to maintain that profile. Mandatory mouthguards at most national-federation championship levels. On-site athletic trainer required at IFAF-sanctioned events; team physician at World Championship + Olympic competition. Concussion protocol mirrors World Rugby / IFAF medical guidelines — removal-for-evaluation + multi-stage return-to-play. AED on-site at all IFAF events. Heat protocols apply to summer-season venues (regular water breaks, heat-stop authority granted to officials).

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