Cheapest return flights from Washington (IAD) to London (LHR)

Cheapest month: November 2026, from $ 532. Book in one tap, or open a month for every date.

All destinations from Washington (IAD)

One-wayReturn

  • October 2026

    14–22 Oct 8 nights
    $ 943 return
    Direct Finnair
    Price seen 12 Oct
    October dates

  • November 2026

    11–18 Nov 7 nights
    $ 532 return Cheapest month
    Iberia
    Price seen 13 Oct
    November dates

  • February 2027

    3 Feb – 7 May 2027 93 nights
    $ 741 return
    Scandinavian Airlines
    Price seen 12 Oct
    February dates

  • May 2027

    19 May – 18 Aug 2027 91 nights
    $ 809 return
    Scandinavian Airlines
    Price seen 12 Oct
    May dates

  • June 2027

    5 Jun – 19 Aug 2027 75 nights
    $ 1,090 return
    Direct American Airlines
    Price seen 12 Oct
    June dates

  • July 2027

    14 Jul – 19 Aug 2027 36 nights
    $ 896 return
    Direct American Airlines
    Price seen 12 Oct
    July dates
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Updated Oct 13, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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