United Kingdom

Jan 1, 1801 | Country flag, State flag |

...

France

Feb 15, 1794 | Country flag, Merchant flag, Naval flag, News, State ensign, State flag |

...

Scotland

Jan 1, 1542 | Constituent country, Country flag, State flag, War flag |

...

Austria

Jan 1, 1230 | Country flag, Merchant flag |

Denmark

Jan 1, 1219 | Country flag, Special, State ensign, State flag |

  Oldest flag still in use by...

Andorra (Civil flag)

Jan 1, 1000 | Country flag |

...