DEN-LHR - 11 June - UA948
LHR-SFO - 12 June - UA931
SFO-LHR - 12 June - UA930
LHR-IAD - 13 June - UA925
IAD-LHR - 13 June - UA924
LHR-DEN - 14 June - UA939
DEN-LHR - 14 June - UA948
LHR-SFO - 15 June - UA931
SFO-LHR - 15 June - UA930
-----------------------------
LHR-IAD - 16 June - UA925
IAD-LHR - 17 June - UA918
LHR-DEN - 18 June - UA939

Not sure where the aircraft will be when it lands at IAD on the 16th until it leaves on the 17th....maintenance checks??