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Cheap Flights from Washington to London (IAD - LHR)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
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Best fares from IAD to LHR (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $1147 2 $1104 3 $1117 4 $1002 5 $1058 6 $1057
7 $1107 8 $1044 9 $1080 10 $1080 11 $966 12 $1010 13 $964
14 $969 15 $980 16 $980 17 $980 18 $964 19 $1010 20 $959
21 $980 22 $964 23 $985 24 $973 25 $964 26 $980 27 $960
28 $985 29 $978 30 $973        
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Direct flights IAD to LHR on Delta
Flight # Depart IAD Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
4383 6:40 pm 7:05 am Sep 5 - Oct 24