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£409 Cheap Aer Lingus flights from London to Washington (LHR→IAD)

View £409 flight on Sun, 24 Jan 2027

Photo by Metropolitan Washington Airports Authority

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  • £409 Cheap Aer Lingus flights London (LHR) to Washington (IAD)

    Prices were available within the past 7 days and start at £409 for one-way flights and £531 for return, for the period specified. Prices and availability are subject to change. Additional terms apply.

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    One way

    Return

    Select Aer Lingus flight, departing Tue, 9 Feb from London to Washington, returning Tue, 2 Mar, priced at £531 Found 1 day ago

    Tue, 9 Feb - Tue, 2 Mar · LHR · IAD · From £531 · Return

    Alternative airports near Washington

    Prices were available within the past 7 days. Prices and availability are subject to change.

    Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from £606

    8 min

    Find the cheapest month to fly from London (LHR) to Washington (IAD)

    February is typically the cheapest month to fly

    From £379 - £508 per traveller.

    View flights in February

    Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ.

    Travel information

    Origin airportHeathrow Airport
    Destination airportWashington Dulles International Airport
    Distance3,666 miles away
    Airline nameAer Lingus
    Airline codeEI
    Return price£531
    Average flight time8 hours 37 mins

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