Terminal 3 is currently used as one of the main global hubs of the International Airlines Group members British Airways (alongside Terminal 5) and Iberia since 12 July 2022.
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Terminal 3 is used by the majority of the members of the Oneworldairline alliance: American Airlines, Cathay Pacific, Finnair, Iberia, Japan Airlines, Qantas, Royal Jordanian, and SriLankan Airlines. British Airways, which mainly uses Terminal 5, also offers some flights from this terminal.
Terminal 3 is used by the majority of the members of the Oneworld airline alliance: American Airlines, Cathay Pacific, Finnair, Iberia, Japan Airlines, Qantas, Royal Jordanian, and SriLankan Airlines. British Airways, which mainly uses Terminal 5, also offers some flights from this terminal.
While domestic flights take you to other destinations within the same country, international flights take you overseas. If you're planning to travel abroad, it's important to know that you'll be flying internationally.
International airports are usually larger than domestic airports, and they must feature longer runways and have facilities to accommodate heavier aircraft such as the Boeing 747 and the Airbus A380 commonly used for international and intercontinental travel.
Flying to a different country is referred to as an international flight. It is made through international airports and keeps tourism and trade between countries alive at the same time.
Terminal 3 (T3) is located next to Terminal 2, and they are the only 2 terminals connected via a walkway. T3 operates mostly long-haul international routes, along with some European flights.
The terminals are arranged in a circular format that is referred to as The Terminal Loop. Terminals 1, 2, and 3 serve primarily domestic flights, while the International Terminal serves (you guessed it!)
Terminal 3 opened in 1961 and was originally named the Oceanic Terminal. The terminal housed the UK's first ever moving walkways. It now measures 98,962 square metres and last year (2021) saw 2.8 million passengers travelling through the terminal on 28,288 flights.
You can walk between Terminals 2 and 3 via the pedestrian underpass. The route is well signposted and can be followed on our interactive Heathrow map. If you have an impairment or mobility difficulties, find out how to request assistance.
When you're traveling outside of the United States, we suggest arriving at least 3 hours prior to your departure. You must be checked in at least 1 hour before your scheduled departure. Additionally, we recommend being at the gate and ready to board 45 minutes before your scheduled departure time.
Most airlines recommend arriving at the airport three hours before departure for international flights. It's common for international flights to start boarding earlier than domestic flights (the aircraft are often larger and have higher passenger capacities), which accounts for the earlier recommendation.
The General Guideline for How Early You Should Get to the Airport. Generally speaking, most airlines advise that you arrive at the airport at least 2 hours prior to a domestic flight, and at least 3 hours prior to an international flight.
A domestic flight (or an internal flight) is a flight that takes off from one destination in the UK, and touches down in another destination in the UK, so a domestic flight means flying within the same country.