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

Cheapest month: November 2026, from $ 548. Book in one tap, or open a month for every date.

All destinations from Washington (IAD)

One-wayReturn

  • October 2026

    24 Oct – 4 Nov 11 nights
    $ 620 return
    TAP
    Price seen 16 Oct
    October dates

  • November 2026

    9–25 Nov 16 nights
    $ 548 return Cheapest month
    Iberia
    Price seen 16 Oct
    November dates

  • December 2026

    29 Dec – 2 Aug 2027 216 nights
    $ 934 return
    TAP
    Price seen 16 Oct
    December dates

  • March 2027

    9 Mar – 6 Apr 2027 28 nights
    $ 711 return
    TAP
    Price seen 16 Oct
    March dates

  • May 2027

    19 May – 2 Jun 2027 14 nights
    $ 771 return
    Icelandair
    Price seen 16 Oct
    May dates
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Updated Oct 17, 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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