London (LHR) to Washington, D.C. (IAD) flights from GBP468

*Modifying this information may result in a different fare

* All amounts are in GBP including taxes and surcharges, except where taxes are collected locally at the airport. A booking fee is not applicable, but a payment surcharge may apply. Prices and availability may change without notice, see KLM price display for more information. Fares displayed on this page have been collected within the last 48hrs and may no longer be available at time of booking. 

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Lowest fares between London and Washington, D.C.

cmp-daily-histogram-bars-legend-min-price-aria-label GBP474
cmp-daily-histogram-bars-legend-max-price-aria-label GBP957
Displaying fares for October-2026
  • LHR–IAD, 11/10/2026 – 18/10/2026: From GBP892
    11

    Su

    OCT

  • LHR–IAD, 12/10/2026 – 19/10/2026: From GBP957
    12

    Mo

  • LHR–IAD, 13/10/2026 – 20/10/2026: From GBP749
    13

    Tu

  • LHR–IAD, 14/10/2026 – 11/11/2026: From GBP760
    14

    We

  • LHR–IAD, 15/10/2026 – 12/11/2026: From GBP755
    15

    Th

  • LHR–IAD, 16/10/2026 – 13/11/2026: From GBP879
    16

    Fr

  • LHR–IAD, 17/10/2026 – 20/10/2026: From GBP801
    17

    Sa

  • LHR–IAD, 18/10/2026 – 25/10/2026: From GBP921
    18

    Su

  • LHR–IAD, 19/10/2026 – 16/11/2026: From GBP763
    19

    Mo

  • LHR–IAD, 20/10/2026 – 17/11/2026: From GBP759
    20

    Tu

  • LHR–IAD, 21/10/2026 – 18/11/2026: From GBP740
    21

    We

  • LHR–IAD, 22/10/2026 – 12/11/2026: From GBP754
    22

    Th

  • LHR–IAD, 23/10/2026 – 13/11/2026: From GBP797
    23

    Fr

  • LHR–IAD, 24/10/2026 – 27/10/2026: From GBP810
    24

    Sa

  • LHR–IAD, 25/10/2026 – 22/11/2026: From GBP798
    25

    Su

  • LHR–IAD, 26/10/2026 – 23/11/2026: From GBP624
    26

    Mo

  • LHR–IAD, 27/10/2026 – 24/11/2026: From GBP588
    27

    Tu

  • LHR–IAD, 28/10/2026 – 18/11/2026: From GBP504
    28

    We

  • LHR–IAD, 29/10/2026 – 26/11/2026: From GBP504
    29

    Th

  • LHR–IAD, 30/10/2026 – 27/11/2026: From GBP504
    30

    Fr

  • LHR–IAD, 31/10/2026 – 28/11/2026: From GBP582
    31

    Sa

  • LHR–IAD, 01/11/2026 – 29/11/2026: From GBP582
    01

    Su

    NOV

  • LHR–IAD, 02/11/2026 – 30/11/2026: From GBP582
    02

    Mo

  • LHR–IAD, 03/11/2026 – 01/12/2026: From GBP504
    03

    Tu

  • LHR–IAD, 04/11/2026 – 18/11/2026: From GBP550
    04

    We

  • LHR–IAD, 05/11/2026 – 26/11/2026: From GBP550
    05

    Th

  • LHR–IAD, 06/11/2026 – 27/11/2026: From GBP608
    06

    Fr

  • LHR–IAD, 07/11/2026 – 14/11/2026: From GBP480
    07

    Sa

  • LHR–IAD, 08/11/2026 – 15/11/2026: From GBP480
    08

    Su

  • LHR–IAD, 09/11/2026 – 16/11/2026: From GBP480
    09

    Mo

  • LHR–IAD, 10/11/2026 – 01/12/2026: From GBP474
    10

    Tu

  • RangeGBP474-GBP957