£183 Find Cheap Flights from Washington to the United Kingdom

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to the United Kingdom.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington to the United Kingdom is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington to the United Kingdom with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United Kingdom is London Heathrow Airport (LHR), with an average flight price of £446.

Based on KAYAK data, the cheapest day to fly to the United Kingdom is Monday when return tickets can be as cheap as £607. On the other hand, the most expensive day to fly is Thursday, when return prices are £819 on average.

The cheapest time of day to fly to the United Kingdom is generally in the evening, when round-trip flights cost £879 on average. Morning departures are around 56% more expensive than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the morning, which is peak travel time and where the average cost of a ticket is £1,369.

The cheapest ticket to the United Kingdom from Washington found in the last 72 hours was to London Heathrow Airport, at £452 return. The most popular route is Seattle (SEA) to London Heathrow Airport (LHR) and the cheapest return airline ticket found on this route in the last 72 hours was £452.

The cheapest month for flights from Washington to the United Kingdom is November, when tickets cost £434 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is £745 and £688 respectively.

To get a below-average price on the flight from Washington to the United Kingdom, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

An average direct flight from Washington to the United Kingdom takes 15h 57m, covering a distance of 4655 miles. The shortest route is Seattle (SEA) to London Heathrow Airport (LHR) with an average flight time of 9h 20m.

Based on KAYAK flight searches, the most popular destination is London (90% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (4%) and Manchester (2%). Searches for flights to Belfast (1%), to Birmingham (1%), and to Southampton (1%) are also popular.