14 CFR § 221.31 - Rules and regulations governing passenger fares and services.

---
identifier: "/us/cfr/t14/s221.31"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 221.31 - Rules and regulations governing passenger fares and services."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "221.31"
section_name: "Rules and regulations governing passenger fares and services."
chapter_name: "OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS)"
subchapter_number: "A"
subchapter_name: "ECONOMIC REGULATIONS"
part_number: "221"
part_name: "TARIFFS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 40101, 40109, 40113, 46101, 46102, chapter 411, chapter 413, chapter 415 and chapter 417, subchapter I."
regulatory_source: "64 FR 40657, July 27, 1999, unless otherwise noted."
cfr_part: "221"
---


# 221.31 Rules and regulations governing passenger fares and services.

(a) Tariff rules and regulations governing passenger fares and services other than those subject to § 221.30 may be filed electronically in conformity with subpart R. Such filings shall conform to criteria approved by the Department's Office of International Aviation as provided in § 221.180 and shall contain at a minimum the information required by § 221.202(b)(9).

(b) Applications for special tariff permission may be filed electronically, as provided in § 221.212.

(c) Tariff publications and applications for special tariff permission covered by paragraphs (a) and (b) of this section may be filed in a paper format, subject to the requirements of this part and Department orders.