£144 Find Cheap Flights from District of Columbia to the United Kingdom

1 adult
1 adult, Economy

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Good to know - Cheap tickets from District of Columbia to the United Kingdom

Low seasonFebruary
High seasonJuly
Cheapest flight£144
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from Washington Dulles Airport to London Heathrow Airport

Flights from District of Columbia to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from District of Columbia to the United Kingdom 
Learn how KAYAK collects reviews and tips from users.
DeeFlew with United AirlinesIAD-LHRFeb 2025
For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.
EllenFlew with British AirwaysIAD-LHROct 2024
Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.
CraigFlew with United AirlinesIAD-LHRJun 2024
Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

FAQs for booking flights from District of Columbia to the United Kingdom

  • How does KAYAK find such low prices on flights from District of Columbia 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 District of Columbia to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to the United Kingdom?

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

  • What is the Hacker Fare option on flights from District of Columbia to the United Kingdom?

    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 District of Columbia to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to the United Kingdom?

    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 District of Columbia to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in the United Kingdom?

    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 £460.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Monday when return tickets can be as cheap as £516. On the other hand, the most expensive day to fly is Saturday, when return prices are £623 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the evening, when round-trip flights cost £607 on average. Morning departures are around 75% 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 £1,061.

  • What is the cheapest flight to the United Kingdom?

    The cheapest ticket to the United Kingdom from District of Columbia found in the last 72 hours was to London Heathrow Airport, at £609 return. The most popular route is Baltimore (BWI) to London Heathrow Airport (LHR) and the cheapest return airline ticket found on this route in the last 72 hours was £609.

  • What is the cheapest month to fly from District of Columbia to the United Kingdom?

    The cheapest month for flights from District of Columbia to the United Kingdom is April, when tickets cost £488 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is £1,387 and £1,016 respectively.

  • How far in advance should I book a flight from District of Columbia to the United Kingdom?

    To get a below-average price on the flight from District of Columbia to the United Kingdom, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

  • How long is the flight to the United Kingdom?

    An average direct flight from District of Columbia to the United Kingdom takes 14h 04m, covering a distance of 3543 miles. The shortest route is Washington, D.C. Dulles Intl Airport (IAD) to Edinburgh (EDI) with an average flight time of 7h 05m.

  • What are the most popular destinations in the United Kingdom?

    Based on KAYAK flight searches, the most popular destination is London (88% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (7%) and Manchester (2%). Searches for flights to Birmingham (1%), to Southampton (0%), and to Bristol (0%) are also popular.

Book cheap flights from District of Columbia to the United Kingdom

Cheapest flights to the United Kingdom from District of Columbia found in 2025

Recent return flight deals

2/9Tue
1 stop
12h 20mIAD-LHR
10/9Wed
1 stop
12h 35mLHR-IAD
£196
20/8Wed
1 stopSWISS
11h 15mIAD-LHR
2/9Tue
1 stopSWISS
12h 30mLHR-IAD
£234
17/10Fri
2 stopsScandinavian Airlines
29h 50mIAD-LHR
20/10Mon
2 stopsScandinavian Airlines
41h 54mLHR-IAD
£283
17/10Fri
1 stopScandinavian Airlines
30h 15mIAD-LHR
20/10Mon
2 stopsScandinavian Airlines
42h 19mLHR-IAD
£284
26/8Tue
1 stopAer Lingus
9h 40mIAD-LHR
5/9Fri
1 stopAer Lingus
13h 10mLHR-IAD
£354
2/9Tue
directIberia
7h 25mIAD-LHR
9/9Tue
1 stopIberia
13h 50mLHR-IAD
£361
9/9Tue
1 stopBritish Airways
11h 35mDCA-LGW
23/9Tue
1 stopBritish Airways
13h 02mLGW-DCA
£369
1/10Wed
directIberia
7h 20mIAD-LHR
7/10Tue
1 stopIberia
33h 10mLHR-IAD
£372
26/8Tue
directBritish Airways
7h 20mIAD-LHR
3/9Wed
1 stopBritish Airways
13h 45mLHR-IAD
£374
8/7Tue
1 stopAer Lingus
10h 40mIAD-LHR
6/8Wed
1 stopAer Lingus
11h 00mLHR-IAD
£403

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Recent one-way flight deals

18/10Sat
1 stopIcelandair
10h 25mIAD-LHR
£144
10/8Sun
1 stopIcelandair
31h 40mIAD-LHR
£148
20/9Sat
1 stopIcelandair
31h 40mIAD-LHR
£149
12/8Tue
1 stopTAP AIR PORTUGAL
31h 00mIAD-LHR
£155
13/8Wed
1 stopTAP AIR PORTUGAL
15h 30mIAD-LHR
£156
21/7Mon
1 stop
28h 02mIAD-LGW
£171
2/8Sat
1 stop
30h 30mIAD-LGW
£175
16/7Wed
1 stopBrussels Airlines
11h 40mIAD-LHR
£208
15/10Wed
1 stopJetBlue
10h 31mDCA-LHR
£231
15/10Wed
1 stopJetBlue
9h 40mDCA-LGW
£231

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Last minute flights from District of Columbia to the United Kingdom

Last minute flight, train and bus deals

15/6Sun
multi-stopJetBlue
13h 00mDCA-LGW
24/6Tue
multi-stopJetBlue
12h 48mLGW-DCA
£575
17/6Tue
multi-stop
16h 55mIAD-LGW
24/6Tue
multi-stop
23h 15mLGW-IAD
£595
17/6Tue
multi-stop
27h 30mIAD-STN
24/6Tue
multi-stop
22h 15mSTN-IAD
£619
13/6Fri
multi-stopRoyal Air Maroc
15h 40mIAD-LHR
17/6Tue
multi-stopRoyal Air Maroc
29h 55mLHR-IAD
£668
15/6Sun
multi-stopAir Canada
34h 00mDCA-LHR
18/6Wed
multi-stopAir Canada
27h 08mLHR-DCA
£726
15/6Sun
multi-stopAir Canada
34h 00mDCA-LHR
18/6Wed
multi-stopAir Canada
31h 02mLHR-DCA
£726
16/6Mon
multi-stopPorter Airlines
17h 15mIAD-LGW
23/6Mon
multi-stopPorter Airlines
32h 31mLGW-IAD
£748
15/6Sun
multi-stopIcelandair
10h 25mIAD-LGW
19/6Thu
multi-stopIcelandair
11h 30mLGW-IAD
£764
15/6Sun
multi-stopIcelandair
16h 05mIAD-LHR
23/6Mon
multi-stopIcelandair
26h 55mLHR-IAD
£825
17/6Tue
multi-stopRoyal Air Maroc
13h 35mIAD-LGW
23/6Mon
multi-stopRoyal Air Maroc
31h 25mLGW-IAD
£854

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Everything you need to know for your flight to the United Kingdom

Cabin class types available on flights to District of Columbia

Cabin classes available on flights to District of Columbia. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to the United Kingdomfrom £6,453
Business Class flights to the United Kingdomfrom £5,291
Prem Econ Class flights to the United Kingdomfrom £1,308
Economy class flights to the United Kingdomfrom £457

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