In two weeks, I will be traveling to the Cottswolds without a car. I need advice to determine how close I need to be to Heathrow to make my return flight home. I will stay 3 nights in Chipping Campden in the Cottswolds. I thought it would be safest to to travel to Oxford on the 4th day to be closer to Heathrow for my flight on the 5th day at 2:55pm. I am having difficulty determining distances and travel time between points. Could I make a 2:55pm flight if I travel directly from Chipping Campden to Heathrow? Any other suggestions for a place to stay on the day before a flight? I am interested in seeing Oxford, but open to other ideas. I am a bit concerned about missing an international flight, so I am being cautious. Hotel suggestions would be appreciated also.
I appreciate your help.