Heathrow is not just a busy airport. It is one of the most connected airports in the world, handling over 79 million passengers a year across two runways and four active terminals. If you are flying through London, this guide covers everything you actually need to know before you arrive.
Understanding Heathrow’s Terminal Layout
Heathrow has four active terminals: T2, T3, T4, and T5. Terminal 1 was permanently closed in 2015, so do not let any old travel guide confuse you.
Terminal 2 (The Queen’s Terminal)
Terminal 2 is home to Star Alliance carriers, including United Airlines, Lufthansa, Air Canada, and Singapore Airlines. It is split into two buildings: T2A and T2B, connected by a short walkway. If you are flying with a Star Alliance member, this is where you will start and end your Heathrow experience.
Terminal 3
This terminal serves airlines like American Airlines, Emirates, Virgin Atlantic (some routes), and Cathay Pacific. It is one of Heathrow’s older buildings butis still well-equipped. The duty-free shopping here is particularly good, and the transit options between T3 and other terminals are quick via the free shuttle bus or the Elizabeth line.
Terminal 4
Terminal 4 primarily handles KLM, Malaysia Airlines, and some charter flights. It sits slightly away from T2, T3, and T5, so allow extra time if you are connecting here. The Heathrow Express does not stop at T4. You will need the free Heathrow shuttle bus or the London Underground (Piccadilly line) to reach it from other terminals.
Terminal 5 (British Airways Hub)
Terminal 5 is Heathrow’s largest and most modern terminal, exclusively operated by British Airways and Iberia. It has three buildings: the main T5A and two satellite buildings, T5B and T5C, connected by an automated transit system. If you are flying BA, this terminal genuinely impresses.
Getting to Heathrow Airport
How you get to Heathrow will depend on where you are coming from and how much time you have. Here is a breakdown of your best options.
Heathrow Express
The fastest way into central London is the Heathrow Express train, which runs every 15 minutes to London Paddington in just 15 minutes. It serves T2, T3, and T5 directly. It is a premium option at around GBP 25 one-way, but the speed is unmatched. Book online in advance to save money.
Elizabeth Line (Crossrail)
The Elizabeth line changed how people travel to Heathrow. It connects the airport to central London and beyond, stopping at Paddington, Bond Street, Tottenham Court Road, Liverpool Street, and Canary Wharf. Journey time to Paddington is around 30 minutes, and fares are much cheaper than the Heathrow Express. It runs to all main terminals, including T4.
London Underground (Piccadilly Line)
The Piccadilly line is the budget-friendly option. It serves all four terminals and connects Heathrow to central London in roughly 50 to 60 minutes,s depending on your stop. It is slower but runs 24 hours on weekends, which matters a lot for early morning or late-night flights.
Coaches and Buses
National Express coaches serve Heathrow from all major UK cities. The Central Bus Station sits between T2 and T3. For budget travellers doing overnight connections, this is often the cheapest way to reach cities like Birmingham, Bristol, and Manchester.
Taxis and Rideshares
Black cabs are available from all terminals and can be expensive, especially during peak hours. Uber and other rideshare apps work well at Heathrow and often cost less. There are dedicated pick-up zones at each terminal to avoid the drop-off traffic.
Heathrow Lounges Worth Knowing About
If you have a long layover or want to make the most of your time before a long-haul flight, Heathrow has a strong lounge offering.
- British Airways Galleries Club and First lounges in T5 are among the best in the world. The First lounge has a spa and excellent dining.
- The Plaza Premium Lounge is available to passengers without airline lounge access and can be booked independently for around GBP 35 per person.
- No 1 Traveller lounges in T2 and T3 are popular with non-premium passengers who just want a quiet space and hot food.
- Priority Pass holders have access to select lounges across multiple terminals, making it worth checking your card benefits before you travel.
Shopping, Food, and Facilities
Heathrow is consistently ranked among the top airports in the world for retail. You will find everything from high-street brands to luxury flagships in the Departures areas. Terminal 5 has the widest range, but T2 and T3 are strong as well.
Food options range from sit-down restaurants like Gordon Ramsay’s Plane Food in T5 to quick bites across all terminals. If you have specific dietary needs, it is worth checking ahead as options vary significantly between terminals.
Free Wi-Fi is available throughout the airport with no time limit. Charging points are scattered across seating areas, though they are in high demand during peak hours. Prayer rooms, family areas, and accessible facilities are available at every terminal.
Insider Tips for a Smooth Heathrow Journey
- Always double-check which terminal your airline uses. Even the same airline may use different terminals for different routes.
- If you are connecting between terminals, factor in at least 90 minutes, especially for international-to-international transfers.
- Security queues at Heathrow can be long during peak morning hours (6 am to 9 am). Arrive earlier than you think you need to.
- The free inter-terminal shuttle bus is quicker than it looks on the map, typically under 15 minutes between most terminal stops.
- If you need to sleep between flights, Pod Hotels and Yotel are both located within the terminal buildings and offer affordable hourly or overnight rooms.
- Heathrow Rewards is the airport’s loyalty programme. You earn points on eligible purchases across shops, restaurants, and car parks.
Heathrow Airport Accessibility
Heathrow scores well for accessibility. Every terminal has step-free access from the kerb to the gate. Passengers with reduced mobility can request special assistance when booking their flight. There are also hearing loops, visual paging systems, and dedicated quiet rooms for passengers who need a calmer environment.
The Passenger Assistance service at Heathrow is free and available 24 hours a day. Contact your airline when booking to arrange it in advance for the smoothest experience.
Frequently Asked Questions
How many terminals does Heathrow Airport have?
Heathrow has four active terminals: T2, T3, T4, and T5. Terminal 1 closed permanently in 2015.
What is the fastest way to get from Heathrow to the London city centre?
The Heathrow Express gets you to Paddington in just 15 minutes, making it the quickest option.
Can I travel between Heathrow terminals for free?
Yes, a free shuttle bus connects all terminals. The Piccadilly line also links them at no extra charge beyond your standard Tube fare.
Is there a hotel inside Heathrow Airport?
Yes, Yotel and Pod Hotel are located inside the terminal buildings and offer flexible short-stay and overnight rooms.
Which terminal does British Airways use at Heathrow?
British Airways operates exclusively from Terminal 5 at Heathrow.
Conclusion
Heathrow is a complex airport, but once you know how it is laid out, getting around becomes much easier. Check your terminal before you travel, give yourself enough time for security, and take advantage of the Elizabeth line to save on transport costs. Whether you are a first-time visitor or a frequent flyer, the right preparation makes Heathrow one of the easier major hubs to navigate.
