Heathrow Terminal 3 map: the central ring, the gate piers, and the lounge zones

Terminal 3 is structurally one building with a hub-and-spoke airside layout. A central post-security departures ring (the duty-free bowl in airport vernacular) sits at the heart of the airside concourse, with gate piers fanning off it. There is no satellite. Everything airside is reached from that one central ring, including the lounge clusters; the gate number on the boarding pass tells you which pier to walk down.

Gates run from 1 to 42 across the piers. Roughly, Gates 1 to 12 sit on the western cluster nearest the Cathay Pacific lounge area; Gates 13 to 22 sit on the eastern cluster where most of the airline lounges (Virgin Atlantic, American Airlines, BA, Qantas) co-locate; Gates 23 to 42 sit out along the long northern pier, with the highest-numbered gates at the far end. The far walk is the one to flag: from security to Gates 40 to 42 is around 800 metres to a kilometre, allow 15 to 20 minutes. For the operational view of the terminal (airlines, transport, parking, lounge access rules), see the Terminal 3 page; the page you are on covers the physical layout only.

T3 first opened on 13 November 1961 as the Oceanic Terminal, was renamed Terminal 3 in 1968, and has been rebuilt in stages since, most recently with the Virgin Upper Class Wing extension and a refreshed central concourse. The building is the oldest in current use at Heathrow.

Terminal 3 has three passenger floors, Levels 0 to 2, with the rail station below and a separate multi-storey car park above. Lifts are signed by level and the level numbers appear on directional signs.

• Level 0 (ground): check-in (zones A to J), the arrivals and immigration halls, baggage reclaim, customs, the meeting point opposite the international arrivals exit, the drop-off forecourt, the taxi rank, and the bus station alongside.
• Level 1: security, the airside departure lounge, the boarding gates 1 to 42, and most of the lounges, one floor up from check-in.
• Level 2: the upper arrivals level from gates 1 to 7 and 25 to 42, and the American Express Centurion lounge (Lounge A), above the central ring.
• Levels 3 to 6: the Terminal 3 multi-storey car park, a separate building linked to the terminal by a walkway and tunnel, not floors of the terminal itself.
• Level -1: the Piccadilly Line Underground station and the underground walkway to Terminal 2.
• Level -2: the Heathrow Express and Elizabeth Line platforms, the deeper part of the Heathrow Terminals 2 & 3 station.

Check-in at T3 is on the ground floor, Level 0, with departures a floor up on Level 1. That differs from Terminal 2 next door, where check-in is on level 5; the two terminals share the central area but not the floor scheme. A reader arriving by rail comes up to the ground floor, checks in on Level 0, then goes up to Level 1 for security and the departure lounge.

The closer piers branch off the central ring on the western and eastern sides. From the central post-security area, walking time to a gate inside this range is typically 5 to 10 minutes, depending on the pier and how far along it the gate sits.

Gates 1 to 12 form the western cluster. Gate 1 to Gate 8 sit closer to the central ring (3 to 5 minutes from security on foot). Gates 9 to 12 sit further out (6 to 8 minutes). The Cathay Pacific Business and First lounges in Lounge C are near Gate 11 and are the closest dedicated lounges to this gate group.

Gates 13 to 22 form the eastern cluster, where the heaviest concentration of airline lounges sits. The Virgin Atlantic Clubhouse, the American Airlines Admirals Club and the Flagship Lounge, and the Qantas London Lounge cluster in Lounge H on the connector to these gates. The British Airways Galleries Club and Galleries First lounges, the Clubrooms, and the No1 Lounge all sit in Lounge F signposted from the same connector. Walking time to a Gate 13 to 22 from security is 6 to 10 minutes; the walk is dominated by the connector corridor rather than the gate pier itself.

The long pier carries the highest-numbered gates and is the structural fact this page exists to flag. Gates 23 to 42 spread out from the central ring towards the north, with the gates climbing in number as the pier extends. Gates 23 to 30 sit in the closer half of the pier; Gates 31 to 39 in the middle; Gates 40 to 42 at the far end.

The walk to a far-end gate is long. From the security exit to Gate 42 is roughly 800 metres to a kilometre, with travellators on parts of the corridor but stretches of pure walking in between. Allow 15 to 20 min from security to the gate, and add to that any time spent in a lounge near the central ring. The gate also tends to appear later on the screens for flights that use this end of the pier, because the airline holds back the assignment until the inbound aircraft is closer to stand; start walking as soon as the gate is posted rather than waiting in the central ring.

The pier has its own washrooms and a small set of seating clusters at the far end, but limited food and no airline lounges beyond Gate 22. Coffee and snacks are available, but the sit-down restaurants and the World Duty Free flagship all sit around the central ring. Eat and shop before the walk if you have time.

Terminal 3 has more lounges than any other Heathrow terminal, around 15 in total. They are signposted by zone letter rather than by name on the overhead signs (Lounge A, Lounge C, Lounge F, Lounge H), and the letter appears on the lounge confirmation. The zone letters map to where the lounges sit on the airside concourse, not to which airline owns each one.

• Lounge A: the American Express Centurion Lounge, on level 2 above the central ring, reached by a lift from the central concourse near the flight connections signs. Open to Centurion and Platinum cardholders.
• Lounge C: the Cathay Pacific Business and First lounges, near Gate 11, a few minutes from security.
• Lounge F: the British Airways Galleries Club, Galleries First, and the Clubrooms, plus the No1 Lounge. Signposted towards Gates 13 to 22 from the central ring.
• Lounge H: the Virgin Atlantic Clubhouse, the American Airlines Admirals Club, the American Airlines Flagship Lounge, and the Qantas London Lounge. On the connector to Gates 13 to 22, the busiest of the lounge clusters.

Plaza Premium runs a paid-entry lounge in the central area for travellers without an airline lounge entitlement. The Virgin Atlantic Revivals Lounge is the dedicated arrivals lounge for incoming Virgin Upper Class passengers, on the ground floor near baggage reclaim with shower suites and breakfast, separate from the airside Clubhouse. The full list of lounges with access rules, opening hours, and reviews sits on the Terminal 3 page; this page covers the layout only.

Virgin Atlantic Upper Class passengers (and Flying Club Gold members on Virgin tickets) have a separate landside entrance to the terminal called the Upper Class Wing. It is on the departures forecourt, signposted from the kerbside and accessible only with an Upper Class boarding pass or a Flying Club Gold card. Inside, a dedicated check-in desk, a private security channel, and a short corridor lead straight onto the airside concourse near the Clubhouse in Lounge H.

The Upper Class Wing is faster than the main check-in hall and the main security at peak. It is shown on the schematic above as a separate landside box; the actual entrance is on the right-hand end of the departures forecourt as you face the building. For the main hall check-in zones (A to J for all other passengers and cabin classes), see the parent terminal page.

The central post-security ring carries the heaviest concentration of retail and food. The World Duty Free flagship sits at the heart of the ring, with luxury fashion (Burberry, Mulberry, Gucci, Hugo Boss), beauty and fragrance counters, and the main book and electronics chains spread around it. Sit-down restaurants and bars cluster on the same ring; chain quick-food (Pret, Caffè Nero, Itsu, Wagamama) fills the gaps.

Retail and food thin out noticeably the further out a pier the reader walks. The long northern pier (Gates 23 to 42) has cafe and snack options near the central end, but the far half is dominated by gate seating and washrooms only. The eastern cluster (Gates 13 to 22) has a few cafes built into the lounge corridor. The western cluster (Gates 1 to 12) has the Cathay lounge cluster and a small set of snack outlets. Plan your eating and shopping for the central ring before the gate walk.

Quieter seating tends to sit at the gate ends of the piers, away from the central concourse. The main shopping ring is the busiest part of the building at the morning long-haul peak (06:00 to 09:00) and during the late-afternoon long-haul outbound wave.

Arriving aircraft park at any of the gate positions across the piers. From the gate, the route to baggage runs down to the ground floor: airbridge or bus to the immigration hall, the eGate bank and the staffed desks, then the baggage reclaim hall on the same level, then customs, then out into the arrivals concourse and the meeting point. Travel time from gate to the exit is usually 25 to 45 minutes including the wait at immigration; the eGate queue clears in under 10 minutes off-peak but can be 20 to 30 minutes when several long-haul wide-bodies arrive in the same hour.

The baggage reclaim hall has up to 10 belts and the belt for your flight is shown on the overhead screens in the immigration hall and the baggage hall. Bags appear on the belt 15 to 20 minutes after the aircraft is on stand, with the last bags 40 minutes or longer after a full long-haul wide-body or any aircraft that parks at a remote stand. The airline's ground handling agent runs the operation; the agent's desk inside the baggage hall handles missing, damaged, or delayed bag reports.

The meeting point sits in the arrivals concourse on the ground floor, signed from the baggage hall exit, opposite the international arrivals doors. From the meeting point, lifts run down to level -1 for the Piccadilly Line Underground and the walkway to Terminal 2, and to level -2 for the Heathrow Express and Elizabeth Line platforms, or out to the forecourt at ground level for taxis, buses, and the Terminal Parking lifts.

Terminal 3 to Terminal 2 is the only walking inter-terminal pair at Heathrow. The route is on level -1, the same level as the Piccadilly Line Underground. From the T3 arrivals concourse on the ground floor, take the lift or escalator down one level and follow the signs for Terminal 2 along the underground passage. The walk takes around 10 minutes at a normal pace, with travellators along most of the route. The route is step-free.

The walkway is landside, not airside. Arriving passengers who have already cleared immigration use it as a normal pedestrian connection; departing passengers can use it to switch terminals before security, useful when a connection lands at T2 but checks in at T3. Airside connecting passengers between the two terminals follow the purple Flight Connections signs from the gate, which routes them along a separate corridor that avoids re-clearing security. For the door-to-door bands on every other terminal pair (T3 to T4, T3 to T5), see the inter-terminal transfer page; the airport-wide schematic is on the airport-wide Heathrow map. The neighbouring central-area map is at Terminal 2 map.