Great Western Railway operates a train from Oxford to Chiswick hourly. Tickets cost $26 - $50 and the journey takes 37 min. 2 other operators also service this route. Alternatively, Oxford Bus Company operates a bus from Oxford to Chiswick every 15 minutes. Tickets cost $12 - $19 and the journey takes 1 h 14 min. London Buses also services this route hourly.
From Oxford train to Slough, train to Ealing Broadway Underground Station, then Tube to Chiswick Park Underground Station. 1 h 21 min £30. From Oxford City Centre, Queens Lane (Stop K5) bus to Heathrow Airport Terminal 5, Heathrow Terminal 5 then bus to Turnham Green Church. 2 h 24 min £12. From Oxford drive to Chiswick. 59 min £9.