| JFK–LHR | New York – London | 1,135 |
| DEN–PHX | Denver – Phoenix | 896 |
| BOS–JFK | Boston – New York | 713 |
| DEL–LHR | New Delhi – London | 538 |
| LAX–LHR | Los Angeles – London | 528 |
| AGP–LGW | Málaga – London | 499 |
| SIN–SYD | Singapore – Sydney (Mascot) | 485 |
| BOM–LHR | Mumbai – London | 479 |
| BOS–MCO | Boston – Orlando | 475 |
| LHR–ORD | London – Chicago | 464 |
| LHR–MAD | London – Madrid | 464 |
| DOH–LHR | Doha – London | 456 |
| LHR–LIS | London – Lisbon | 454 |
| LHR–SIN | London – Singapore | 451 |
| ATH–LHR | Spata-Artemida – London | 451 |
| EWR–LHR | Newark – London | 435 |
| DUB–LHR | Dublin – London | 415 |
| IST–LHR | Istanbul – London | 409 |
| ALC–LGW | Alicante – London | 405 |
| FCO–LHR | Rome – London | 384 |
| HKG–LHR | Hong Kong – London | 372 |
| GYD–IST | Baku – Istanbul | 365 |
| FAO–LGW | Faro – London | 365 |
| LHR–SFO | London – San Francisco | 356 |
| AYT–LGW | Antalya – London | 348 |
| BOS–LHR | Boston – London | 343 |
| LHR–YYZ | London – Toronto | 340 |
| CPH–LHR | Copenhagen – London | 334 |
| LGW–PMI | London – Palma de Mallorca | 326 |
| GVA–LHR | Geneva – London | 325 |
| ARN–LHR | Stockholm – London | 315 |
| IAD–LHR | Dulles – London | 314 |
| HND–LHR | Tokyo – London | 296 |
| LHR–SEA | London – Seattle | 294 |
| BCN–LHR | Barcelona – London | 294 |
| DFW–LHR | Dallas-Fort Worth – London | 292 |
| LHR–NCE | London – Nice, Alpes-Maritimes | 289 |
| LGW–TFS | London – Tenerife | 286 |
| DLM–LGW | Dalaman – London | 283 |
| ATL–LHR | Atlanta – London | 280 |
| LHR–OSL | London – Oslo (Gardermoen) | 278 |
| LGW–MLA | London – Valletta | 274 |
| CAI–LHR | Cairo – London | 271 |
| HER–LGW | Heraklion – London | 268 |
| BLR–LHR | Bengaluru – London | 256 |
| AUH–LHR | Abu Dhabi – London | 226 |
| IAH–LHR | Houston – London | 225 |
| LGW–RHO | London – Rhodes | 224 |
| LGW–PFO | London – Paphos | 224 |
| ACE–LGW | San Bartolomé – London | 224 |
| LCY–LIN | London – Segrate (MI) | 221 |
| CFU–LGW | Kerkyra (Corfu) – London | 220 |
| LHR–ZRH | London – Zurich | 218 |
| LHR–WAW | London – Warsaw | 216 |
| LGW–OPO | London – Porto | 214 |
| LCA–LHR | Larnaca – London | 205 |
| LGW–RAK | London – Marrakesh | 204 |
| IBZ–LGW | Ibiza (Eivissa) – London | 201 |
| LCA–LGW | Larnaca – London | 200 |
| KUL–LHR | Sepang – London | 192 |
| EDI–LHR | Ingliston, Edinburgh – London | 190 |
| LHR–MIA | London – Miami | 187 |
| FRA–LHR | Frankfurt am Main – London | 184 |
| LHR–LIN | London – Segrate (MI) | 177 |
| GLA–LHR | Glasgow – London | 174 |
| LGW–SVQ | London – Seville | 173 |
| LHR–MUC | London – Munich | 171 |
| EZE–GIG | Buenos Aires (Ezeiza) – Rio De Janeiro | 171 |
| LAS–LHR | Las Vegas – London | 169 |
| EDI–PMI | Ingliston, Edinburgh – Palma de Mallorca | 168 |
| LHR–VIE | London – Vienna | 168 |
| DEN–LHR | Denver – London | 167 |
| IBZ–STN | Ibiza (Eivissa) – London, Essex | 162 |
| LHR–VCE | London – Venezia (VE) | 157 |
| GLA–PMI | Glasgow – Palma de Mallorca | 155 |
| GRU–LHR | São Paulo – London | 153 |
| CDG–LHR | Paris (Roissy-en-France, Val-d'Oise) – London | 153 |
| LHR–PHL | London – Philadelphia | 150 |
| LGW–MAH | London – Mahón (Maó) | 149 |
| LHR–YVR | London – Vancouver | 148 |
| EDI–LCY | Ingliston, Edinburgh – London | 144 |
| HAM–LHR | Hamburg – London | 143 |
| LGW–LPA | London – Gran Canaria Island | 143 |
| LHR–YUL | London – Montréal | 142 |
| JNB–LHR | Johannesburg – London | 142 |
| KEF–LHR | Reykjavík – London | 141 |
| AMS–LHR | Amsterdam – London | 141 |
| LHR–PMI | London – Palma de Mallorca | 139 |
| FNC–LGW | Funchal – London | 139 |
| LHR–NAP | London – Napoli | 139 |
| LGW–NCE | London – Nice, Alpes-Maritimes | 139 |
| BUD–LHR | Budapest – London | 138 |
| BER–LHR | Berlin – London | 138 |
| LHR–NBO | London – Nairobi | 135 |
| LGW–MCO | London – Orlando | 133 |
| BGI–POS | Bridgetown – Port of Spain | 131 |
| ABZ–LHR | Aberdeen – London | 131 |
| KGS–LGW | Kos Island – London | 128 |
| FAO–LHR | Faro – London | 127 |
| LHR–PHX | London – Phoenix | 126 |
| BHD–LHR | Belfast – London | 124 |
| DBV–LGW | Dubrovnik – London | 123 |
| LHR–MXP | London – Ferno (VA) | 121 |
| LHR–PRG | London – Prague | 121 |
| CHQ–LGW | Souda – London | 121 |
| LHR–MEX | London – Mexico City | 118 |
| LHR–PVG | London – Shanghai (Pudong) | 117 |
| AUS–LHR | Austin – London | 116 |
| CTA–LGW | Catania – London | 116 |
| GLA–LCY | Glasgow – London | 114 |
| LHR–SAN | London – San Diego | 113 |
| DUS–LHR | Düsseldorf – London | 112 |
| LHR–MRS | London – Marignane, Bouches-du-Rhône | 110 |
| DUB–LCY | Dublin – London | 109 |
| LGW–SKG | London – Thessaloniki | 104 |
| BGI–LHR | Bridgetown – London | 103 |
| BRU–LHR | Zaventem – London | 102 |
| AGP–LHR | Málaga – London | 100 |
| CUN–LGW | Cancún – London | 100 |
| LHR–PSA | London – Pisa (PI) | 100 |
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