London to Washington, D.C. Flights on Aer Lingus from £165.24*

Promo Code

Book London (LON) to Washington, D.C. (IAD) flight deals*

Oct 2026
From£226.74*
Seen: 17 hrs ago
Each way/Economy
Nov 2026
From£165.24*
Seen: 18 hrs ago
Each way/Economy
Dec 2026
From£170.49*
Seen: 5 hrs ago
Each way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label £165.74
cmp-daily-histogram-bars-legend-max-price-aria-label £647.25
Displaying fares for October-2026
  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    15

    Th

    OCT

  • LHR–IAD, 16 Oct 2026 – 21 Oct 2026: From £647.25
    16

    Fr

  • LHR–IAD, 17 Oct 2026 – 21 Oct 2026: From £386.74
    17

    Sa

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    18

    Su

  • LHR–IAD, 19 Oct 2026 – 26 Oct 2026: From £343.74
    19

    Mo

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    20

    Tu

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    21

    We

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    22

    Th

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    23

    Fr

  • LHR–IAD, 24 Oct 2026 – 31 Oct 2026: From £451.49
    24

    Sa

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    25

    Su

  • LHR–IAD, 26 Oct 2026 – 31 Oct 2026: From £353.24
    26

    Mo

  • LHR–IAD, 27 Oct 2026 – 17 Nov 2026: From £353.24
    27

    Tu

  • LHR–IAD, 28 Oct 2026 – 17 Nov 2026: From £226.74
    28

    We

  • LHR–IAD, 29 Oct 2026 – 6 Nov 2026: From £299.99
    29

    Th

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    30

    Fr

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    31

    Sa

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    01

    Su

    NOV

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    02

    Mo

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    03

    Tu

  • LHR–IAD, 4 Nov 2026 – 10 Nov 2026: From £165.74
    04

    We

  • LHR–IAD, 5 Nov 2026 – 10 Nov 2026: From £165.74
    05

    Th

  • LHR–IAD, 6 Nov 2026 – 23 Nov 2026: From £277.74
    06

    Fr

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    07

    Sa

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    08

    Su

  • LHR–IAD, 9 Nov 2026 – 24 Nov 2026: From £165.74
    09

    Mo

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    10

    Tu

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    11

    We

  • LON–IAD: cmp-view-offers-disclaimer. Check Availability
    12

    Th

  • LHR–IAD, 13 Nov 2026 – 28 Nov 2026: From £165.24
    13

    Fr

  • LHR–IAD, 14 Nov 2026 – 28 Nov 2026: From £215.99
    14

    Sa

    • Range£165.74-£647.25

    * Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.

    Thomas Jefferson Memorial in Washington, D.C., characterized by cherry blossoms in bloom around the Tidal Basin
    Email Sign Up
    Aer Lingus Newsletter
    Sign Up and Save

    ✔ Be first to receive current offers

    ✔ Learn about new and exciting destinations

    ✔ Get the latest travel news and more

    Sign Me Up

    Book London to Washington, D.C. flight deals*

    £
    * Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.