The Freedoms of the Air are nine traffic rights that determine whether an airline from one country may fly over, land in, carry passengers to, carry passengers from, or operate between and within other countries. They are granted by governments through treaties and bilateral agreements, not automatically, because the foundational rule of international aviation is that every country controls access to its own airspace. The first five were proposed at the 1944 Chicago Convention. The remaining four came later as labels for commercial arrangements that go beyond what the original negotiators agreed to.
Why These Rights Exist
Article 6 of the 1944 Chicago Convention set the baseline: no scheduled international air service may operate over or into another country without that country’s special permission.1United Nations Treaty Collection. Convention on International Civil Aviation Every freedom below flows from that principle. Without an agreement, a foreign airline has no right to touch another country’s airspace at all.
The Convention produced two separate multilateral agreements to start granting those permissions. The International Air Services Transit Agreement, known as the “Two Freedoms” agreement, covered flying over a country and landing for technical reasons. The International Air Transport Agreement, the “Five Freedoms” agreement, went further to include commercial passenger and cargo rights.2International Civil Aviation Organization. Introduction The Transit Agreement was widely accepted. The Transport Agreement was not, because most countries refused to grant broad commercial access on a multilateral basis. That is why international aviation still runs mostly on bilateral deals negotiated one country at a time.
Freedoms six through nine were never written into any ICAO treaty. They describe progressively more liberal commercial arrangements that some countries allow through special agreements. An airline invoking the first or second freedom can point to a widely ratified treaty. An airline seeking eighth or ninth freedom rights needs a bespoke deal that most governments will refuse.
First Freedom: Flying Over
The first freedom is the right to fly across another country’s territory without landing.3Civil Aviation Authority of Macao SAR. Freedoms of the Air It is the most basic privilege in international aviation. Without it, long-haul routes would need to zigzag around uncooperative countries, adding hours and burning fuel. The International Air Services Transit Agreement, signed alongside the Chicago Convention, is the primary vehicle for granting overflight rights on a multilateral basis.4United Nations Treaty Collection. International Air Services Transit Agreement
Overflight is not free. Countries charge for the air traffic control services they provide to aircraft passing through. ICAO’s policies require these charges to be non-discriminatory and based on the cost of providing the service.5International Civil Aviation Organization. ICAO Policies on Charges for Airports and Air Navigation Services For airlines, these fees are a routine operating cost built into every route’s financial model.
Second Freedom: Landing for Non-Traffic Reasons
The second freedom allows an airline to land in a foreign country for reasons that don’t involve picking up or dropping off passengers: refueling, maintenance, crew changes, or emergencies. Commercial traffic during the stop is prohibited. Like the first freedom, this right is covered by the Transit Agreement and is widely accepted.4United Nations Treaty Collection. International Air Services Transit Agreement
This freedom mattered enormously in the early decades of aviation, when aircraft lacked the range to cross oceans nonstop. A transatlantic flight in the 1940s might refuel in Iceland or the Azores. Modern wide-body jets have made planned technical stops rare on major routes, but the right still matters for diversions caused by medical emergencies, mechanical problems, or weather. A crew can land at the nearest suitable airport without triggering a diplomatic incident.
Third and Fourth Freedoms: To and From the Home Country
The third freedom is the right to carry passengers and cargo from the airline’s home country to a foreign country. The fourth freedom is the reverse: picking up passengers in a foreign country and bringing them home.3Civil Aviation Authority of Macao SAR. Freedoms of the Air Together, they form the backbone of international commercial aviation. Every ordinary round-trip flight between two countries on that country’s national airline is a third and fourth freedom operation.
These rights are almost always negotiated as a pair through bilateral air service agreements. Those agreements typically specify which airports the foreign carrier may serve, how many flights per week it may operate, and sometimes what size of aircraft is allowed. The U.S. Department of Transportation and State Department negotiate these agreements for American carriers, and since 1992 the United States has pursued an “open-skies” policy aimed at reducing government control over routes, capacity, and pricing.6U.S. Department of Transportation. Air Service Agreements
Fifth Freedom: Picking Up Passengers En Route
p>The fifth freedom lets an airline carry passengers between two foreign countries as long as the flight originates or terminates in the airline’s home country.2International Civil Aviation Organization. Introduction An airline based in Country A flies to Country B, picks up new passengers, and continues to Country C. The carrier is now competing directly with local airlines in Country B for traffic bound for Country C, which is exactly why these rights are hard to obtain.
Negotiating fifth freedom access involves three governments. Country B has to accept that a foreign airline will be siphoning traffic from its own carriers. Country C has to agree as well. The result is that fifth freedom routes appear where the diplomatic stars align or where the intermediate market is small enough that regulators welcome the extra service.
A few examples show how this works. Singapore Airlines operates a fifth freedom leg between Frankfurt and New York JFK as part of its Singapore-to-New York routing. Emirates flies between Newark and Athens as a fifth freedom segment of a route originating in Dubai. Passengers can book just the foreign leg without continuing to the airline’s home country. The airline fills seats that would otherwise fly empty on the intermediate segment, and travelers get additional competition on routes they care about.
Sixth Freedom: Connecting Through the Home Hub
The sixth freedom is the right to carry passengers between two foreign countries by routing them through the airline’s home country. Technically it is a combination of the fourth freedom (bringing passengers home) and the third freedom (sending them onward), but its strategic effect is different. Airlines based in geographically well-positioned smaller countries use this freedom to build hub-and-spoke networks. Gulf carriers connect passengers flying between Europe and Asia through hubs like Dubai or Doha. The home airport becomes a global transfer point, generating economic activity well beyond what the domestic market alone could support.
Seventh Freedom: Between Two Foreign Countries
The seventh freedom lets an airline operate a route between two foreign countries with no connection to its home territory at all.3Civil Aviation Authority of Macao SAR. Freedoms of the Air A carrier based in Country A runs flights between Country B and Country C, never touching Country A during the service. This is rare for passenger operations because most countries see no reason to hand a foreign airline routes their own carriers could fly. Cargo is different. The U.S.-EU Air Transport Agreement grants EU airlines open seventh freedom rights for all-cargo services between the United States and third countries. U.S. carriers have more limited seventh freedom cargo rights, restricted to what was already available under older bilateral agreements with individual EU member states.
Eighth and Ninth Freedoms: Cabotage
Cabotage is the most jealously guarded territory in aviation law. It means a foreign airline operating flights between two points inside another country.
The eighth freedom, called consecutive cabotage, allows a foreign carrier to fly passengers between two domestic points within another country, but only as part of a route that starts or ends in the carrier’s home country.7ANACpedia. ANACpedia – The Eighth Freedom of the Air The international leg gives the domestic segment its legal basis. The ninth freedom, stand-alone cabotage, removes even that requirement. A foreign airline operates purely domestic flights inside another country with no international connection.
Almost every country prohibits both. Domestic air routes are treated as a national economic asset, and governments want their own carriers serving them. In the United States, federal law restricts foreign aircraft from picking up passengers at one U.S. location for transport to another U.S. location unless specifically authorized by the Secretary of Transportation.8Office of the Law Revision Counsel. 49 USC 41703 – Navigation of Foreign Civil Aircraft Foreign airlines operating in U.S. airspace must hold FAA operations specifications, and those specifications are tied to economic authority granted by the Department of Transportation, which does not extend to domestic routes.9eCFR. 14 CFR Part 129 – Operations: Foreign Air Carriers and Foreign Operators of U.S.-Registered Aircraft Engaged in Common Carriage
The European Union is the major exception. Under EU Regulation 1008/2008, any airline licensed in an EU member state is entitled to operate air services within the entire EU, including domestic routes in other member states.10EUR-Lex. Regulation (EC) No 1008/2008 A French-registered airline can fly passengers between Munich and Berlin. An Irish carrier can operate routes entirely within Spain. This integration exists because the EU has built a single aviation market where member-state airlines are treated as domestic carriers across the bloc. Outside the EU, ninth freedom access remains essentially nonexistent.
How Open Skies Agreements Bundle These Rights
Negotiating each freedom individually through bilateral treaties is slow and restrictive. Open Skies agreements are the modern alternative. They typically grant the first five freedoms with minimal constraints on routes, capacity, and pricing, and often add seventh freedom rights for cargo. The United States currently has Open Skies agreements with 138 aviation partners.11U.S. Department of Transportation. Open Skies Agreements Currently Being Applied
These agreements strip away most of the government micromanagement of earlier bilateral deals. Airlines choose their own routes, set their own fares, and decide how much capacity to offer. What Open Skies deals almost never grant is cabotage. Even the most liberalized version stops at the border of domestic air service, leaving the eighth and ninth freedoms as the line most countries still refuse to cross.