Captivating aerial view of Westminster Palace, Big Ben, and River Thames in London, UK. — flights from Washington to London
DullesLondon, UK

Flights from Dulles to London

Nonstop flights from Dulles (IAD) to London (LHR) take about 7h 53m (5,902 km). United Airlines and British Airways fly it. Lowest fare seen: $266 one-way, nonstop (12 Oct 2026).

All flights from Dulles →All flights to London →

Photo of London: Gianluca Pugliese on Pexels.

When you land in London

The airport transfer and the few things worth sorting before you fly.

British Airways Airbus A320 landing at Heathrow, London on a clear day. — arriving in London

Airport transfer

LHR → London, booked before you fly

A private driver meets you in arrivals at a price agreed when you book. Book with Welcome Pickups.

See transfer prices
Before you flyAirport lounges at Washington Dulles →3 lounges at Washington Dulles AirportTrains, buses and taxi faresLHR to London: getting into town →Early arrival or late flightLuggage storage in London →354 drop-off points, from £1.90

Things to book in London

All 222 things to do in London →
Explore the lush interior of London’s iconic Kew Gardens greenhouse with vibrant foliage and architectural design.from €29.55
Kew Gardens 4.7 · 8,345 Tiqets reviews
Iconic Big Ben tower enveloped in fog with bustling London street scene.from €5.50
Big Ben 4.5 · 6,051 Tiqets reviews
The Gherkin and historic buildings in London under a bright blue sky.from €20.33
The Gherkin 4.6 · 5,318 Tiqets reviews
Close-up of a luxurious gold crown adorned with intricate designs and jewels, symbolizing royalty and opulence.from €17.73
The Crown Jewels 4.7 · 4,642 Tiqets reviews

Find hotels in London

Hotels, hostels & more · Trip.com

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Airlines flying Dulles to London

Carriers on IAD–LHR according to our route data and nonstop fares seen as of 12 Oct 2026. Not a complete list.

✈ United Airlinesnonstop fare seen✈ British Airwaysnonstop fare seen

Dulles to London fares by month

Cheapest month seen for a nonstop flight: Nov 2026, from $447 one-way. With stops: Nov 2026, from $285. Lowest one-way fares seen for departures in each month, read 22 Oct 2026.

DepartingNonstop fromCheaper with stops
Oct 2026$57222 Oct 2026 · United Airlines$301 · 1 stop24 Oct 2026
Nov 2026$44715 Nov 2026 · United Airlines$285 · 1 stop16 Nov 2026
Dec 2026$5079 Dec 2026 · United Airlines$306 · 1 stop9 Dec 2026

When to go for the lowest fare

Fares were close across the months we saw: $285 for November 2026, $306 at best after that.

Nonstop or with a stop

A connection undercut nonstop in 3 of 3 months with both fares.

From Travelpayouts flight-search data, city to city (Dulles to London, any airport), USD, read 22 Oct 2026. These are fares that were on sale, not a guarantee of today's price; an airline is named only where we know it flies this route.

Best time to fly to London

Based on weather and travel conditions in UK

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Best monthsGoodAvoid if possible

UK is a great destination year-round. Check local weather patterns before booking and consider shoulder seasons for lower prices and fewer crowds.

More for this trip

Frequently asked questions — Dulles to London flights

How long is the flight from Dulles to London?
A nonstop flight from Dulles (IAD) to London (LHR) takes about 7h 53m, covering 5,902 km. That is an estimate from the distance — actual time varies with the airline, aircraft and winds, and connecting itineraries take longer.
How far is Dulles from London by air?
The great-circle distance between Washington Dulles International Airport and London Heathrow Airport is 5,902 km (3,667 miles), a long-haul route.
Which airlines fly from Dulles to London?
Airlines with flights or nonstop fares on the IAD–LHR route include United Airlines and British Airways. This is not a complete list — schedules change by season, so check the current options before booking.
How much does a flight from Dulles to London cost?
The lowest one-way fare seen recently on IAD–LHR was $266 USD with United Airlines (nonstop), departing 9 Dec 2026, found in fare searches as of 12 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.
What is the cheapest month to fly from Dulles to London?
In fares seen on 22 Oct 2026, departures in November 2026 were cheapest, from $285 one-way, against $306 for December 2026, the dearest month. Fares change daily, so check your own dates.
Is it cheaper to fly nonstop or with a stop from Dulles to London?
In the fares we saw (12 Oct 2026), connecting was cheaper: from $234 with one stop against $266 nonstop, a saving of $32. Nonstop saves the connection time.
Do I need a visa to travel from Dulles to UK?
It depends on your passport. Some nationalities can enter UK visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.
What is the best time to visit London?
UK is a great destination year-round. Check local weather patterns before booking and consider shoulder seasons for lower prices and fewer crowds.

Sources: fares from Travelpayouts flight-search data, seen 12 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

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