Iberia Express today is beginning service to Heathrow with 3 weekly flights from Tenerife and 4 weekly from Las Palmas.
From today, Tuesdays, Thursdays and Sundays:
The outbound: IB3602 departs Tenerife at 1120 and arrives London at 1545
The return: IB3603 departs London at 1705 and arrives to Tenerife at 2130
From tomorrow, Mondays, Wednesdays, Fridays and Saturdays:
The outbound: IB3604 departs Las Palmas at 1120 and arrives to London at 1545
The return: IB3605 departs London at 1705 and arrives to Las Palmas at 2130