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Is flag football a contact sport? Blocking and contact rules

Not really. Every rulebook here limits contact. NFL FLAG and both USA Flag books ban blocking and screening. IFAF is non-contact. College is the exception: a screen block is legal if the blocker does not start contact.

Limited contact keeps young players safe. It is a big reason families pick flag football.

Updated · cited to the official rulebooks · Compare every ruleset

By ruleset

What each rulebook says, in our words, with the rule to check it against. A blank cell says why it is blank.

  • NFL FLAG 5v5

    5v5 · Youth leagues and tournaments

    No blocking or screening. No holding the ball carrier or running through them.

    NFL FLAG §X.8; §XIV.2

    NFL FLAG One-Way Field makes no change here.

  • USA Flag 5's

    5v5 · Leagues and tournaments, all ages

    No blocking or screening: 10 yards and the down. The rulebook also explains shielding and aiming.

    USA Flag 5's R4-2-5; R4-6; R6-3

  • USA Flag 7's

    7v7 · Leagues and tournaments, all ages

    No blocking or screening: 10 yards and the down. The rulebook also explains shielding and aiming.

    USA Flag 7's R4-2-5; R4-6; R6-3

  • NFHS (girls' high school)

    7v7 · Sanctioned high school

    Not fully checked. The blocking rules are in a part of the book we have not read. The penalty list makes 4 blocking fouls 10 yards each. They are illegal technique, locked arms, holding and illegal use of hands. Screen blocking is a 2026-27 point of emphasis.

    NFHS Penalty summaryNFHS rules page

    Illinois (IHSA) makes no change here.

  • IFAF Flag Football

    5v5 · International play

    No contact. Who had the spot first, or the path, decides who is at fault. Illegal contact costs 10 yards. The offense also loses the down. Against the defense, it is also a first down.

    IFAF R2-13; R9-1-1

  • College Flag Football

    7v7 · College, including NAIA women's

    Screen blocking is legal if the screener does not start the contact. A defender's illegal use of hands costs 5 yards and gives a first down.

    College R2-2-1; R9-3; R9-4

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Questions.

Usually not. NFL FLAG and both USA Flag rulebooks ban blocking and screening. IFAF rules allow no contact. College is the exception. There, screen blocking is legal if the screener does not start the contact. NFHS made screen blocking a 2026-27 point of emphasis. Illegal blocking technique costs 10 yards there.

Related rules

Official rulebooks

Sources cited on this page

  1. NFL FLAG Official Playing Rules (NFL FLAG, Revised March 24, 2025)
  2. USA Flag 5's Rulebook (USA Flag 5's, v2026.2)
  3. USA Flag 7's Rulebook (USA Flag 7's, v2026.2)
  4. NFHS Flag Football Rules Book (NFHS, 2026-27)
  5. NFHS Flag Football Rules (NFHS rules page, Rules changes and points of emphasis)
  6. IFAF Flag Football Rules (IFAF, 2023, effective May 1, 2023)
  7. 2025-26 and 2026-27 College Flag Football Rules (College, 2025-26 and 2026-27)

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