London Overground operates a train from Islington to Chiswick every 20 minutes. Tickets cost $3 - $7 and the journey takes 33 min. Alternatively, London Buses operates a bus from Islington to Chiswick hourly. Tickets cost $3 and the journey takes 36 min.
From King's Cross St. Pancras Underground Station Tube to Turnham Green Underground Station. 27 min £3. From Highbury & Islington train to South Acton. 33 min £3. From Covent Garden, Savoy Street bus to Turnham Green Church. 36 min £2. From Islington taxi to Chiswick. 19 min £42. From Islington drive to Chiswick. 19 min £1. From Islington Uber to Chiswick. 19 min £24. From Islington walk to Chiswick. 2 h 38 min. From Islington Green, Angel Bikeshare to Ravenscourt Park Station, Hammersmith. 51 min.