This is the full list published by BA:

LONDON HEATHROW

NEW ROUTES:
Almeria (LEI) - 2 flights a week on Tuesday and Saturday from 28 March 2018
Las Palmas (LPA) - continuation of Saturday service from 31 March 2018
Tenerife (TFS) - continuation of Saturday service from 31 March 2018
Corsica (FSC) - Sunday service on Sunday from 27 May 2018


FREQUENCY INCREASES:
New Orleans (MSY) - additional flight per week from 4 flights to 5 flights per week
Rio de Janeiro (GIG) - increase from 5 flights per week to a daily service. Tuesday service will continue from the Winter season, whilst Thursday service will be added on 10 May.
Inverness (INV) - increase from 7 flights to 10 flights per week
Basle (BSL) - increase from 25 flights to 26 flights per week
Malaga (AGP) - increase from 2 flights to 8 flights per week
Reykjavik (KEF) - increase from 4 flights to 7 flights per week
Faro (FAO) - increase from 2 flights to 4 flights per week
Pisa (PSA) - increase from 9 flights to 10 flights per week
Berlin (TXL) - increase from 45 flights to 46 flights per week
Warsaw (WAW) - increase from 14 flights to 18 flights per week
Palma (PMI) - increase from 7 flights to 13 flights per week
Corfu (CFU) - increase from 7 flights to 11 flights per week
Mykonos (JMK) - increase from 3 flights to 7 flights per week


FREQUENCY DECREASES:
Tehran (IKA) - reduced from daily flights to 5 flights per week
Las Vegas (LAS) - reduced by 1 flight to 10 flights per week
Belfast (BHD) - reduced from 38 flights to 31 flights per week
Edinburgh (EDI) - reduced from 76 flights to 74 flights per week
Glasgow (GLA) - reduced from 67 flights to 66 flights per week
Istanbul (IST) - reduced from 21 flights to 14 flights per week
Barcelona (BCN) - reduced from 53 flights to 49 flights per week


CHANGE OF SCHEDULE
Las Vegas (LAS) - days of operation for BA271/270 will change from Tuesday, Thursday & Sunday to Monday, Wednesday & Saturday. Friday remains unchanged. No change to the BA275/274 daily service.
Muscat (MCT) - days of operation for BA079/080 will change from Wednesday, Thursday, Friday, Saturday & Sunday to Monday, Thursday, Friday, Saturday & Sunday
Tallin (TLL) - day of operation will change from Saturday to Friday from 27 March 2018
Nantes (NTE) - reduction of season length, day of week change & increase of frequency from 3 July 2018


LONDON GATWICK

NEW ROUTES:
Toronto (YYZ) - new summer only service 3 x weekly from 1 May 2018
Las Vegas (LAS) – new summer only service 3 x weekly service 27 March 2018 FREQUENCY DECREASES:
Oakland (OAK) - reducing by 1 flight to 3 flights per week from 27 March 2018
Orlando (MCO) - reducing by 1 flight to 13 per week from 14 May 2018
Kingston (KIN) – reducing by 1 flight to 3 flights per week from 6 May 2018