Search & Compare - Washington to London Flights & Tickets

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Cheap flights from Washington to London (IAD to LHR)

Looking for a cheap last-minute deal or the best round-trip flight from Washington to London? Find the biggest savings on one-way and round-trip tickets right here.

Recent airfare deals on Washington to London

American Airlines  AA
American Airlines
Washington
2025-05-15
London
2025-05-17
USD 198

Round Trip AA Nonstop Economy fare found on 2025-05-06
American Airlines  AA
American Airlines
Washington
2025-05-15
London
2025-05-17
USD 198

Round Trip AA Nonstop Economy fare found on 2025-05-06
Icelandair  FI
Icelandair
Washington
2025-03-08
London
USD 217

One-way FI Economy fare found on 2025-03-08
Icelandair  FI
Icelandair
Washington
2025-03-08
London
USD 217

One-way FI Economy fare found on 2025-03-08
Icelandair  FI
Icelandair
Washington
2025-07-05
London
USD 293

One-way FI Economy fare found on 2025-04-28
Icelandair  FI
Icelandair
Washington
2025-07-05
London
USD 293

One-way FI Economy fare found on 2025-04-28
Icelandair  FI
Icelandair
Washington
2025-07-05
London
USD 295

One-way FI Economy fare found on 2025-04-28
Icelandair  FI
Icelandair
Washington
2025-07-05
London
USD 295

One-way FI Economy fare found on 2025-04-28
TAP - Air Portugal  TP
TAP - Air Portugal
Washington
2025-03-08
London
USD 354

One-way TP Economy fare found on 2025-03-08
TAP - Air Portugal  TP
TAP - Air Portugal
Washington
2025-03-08
London
USD 354

One-way TP Economy fare found on 2025-03-08


*Prices are per person and are for e-tickets and include all taxes & fees in USD.
*Fareleaders always attempts to get accurate pricing, however, prices are not guaranteed.
*Fareleaders is not seller, we aggregate tones of data for you from other online travel agencies and external sources.

Facts to know while booking flights from Washington to London

What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from IAD to LHR?
The most popular airline flying from Washington to London are Aer Lingus, British Airways, American Airlines, Air France, Air Canada, Icelandair, KLM Airlines, TAP - Air Portugal, Virgin Atlantic, Avianca, United Airlines, Delta Airlines
Can I fly from IAD to LHR non-stop?
Yes, you can fly IAD to LHR non-stop on American Airlines, Virgin Atlantic, United Airlines, Delta Airlines
Which airlines fly nonstop between Washington and London?
The non-stop flights between Washington and London are American Airlines, Virgin Atlantic, United Airlines, Delta Airlines.
What’s the earliest departure time from IAD to LHR Airport?
The earliest flight leaves IAD at 10:48 am and lands in LHR - London Heathrow
What are the airports in London?
LHR
Can I make changes to my Washington to London flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from IAD to LHR?
Read the fare rules of the Washington to London air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Washington and London?
NULL, Oneworld, Oneworld, SkyTeam, Star Alliance, NULL, SkyTeam, Star Alliance, Sky Team, Star Alliance, Star Alliance, SkyTeam operate flights between Washington and London
How long does a flight from Washington to London take?
It takes approximately 8 hour to fly non-stop from IAD to LHR, which is 3676.74 miles by air.
Which airlines provide the cheapest flights from Washington (IAD) to London (LHR) ?
In the past couple of days, the cheapest tickets to LHR from IAD were found on American Airlines : USD 198
Do I need a passport to fly between IAD and LHR?
Yes
What’s the latest departure time from IAD to LHR ?
The last flight leaves IAD at 11:15 pm

Essential Information for Booking Flights from Washington to London - AI Insights

What's the cheapest airline from iad to lhr?
Looking for the cheapest flights from Washington Dulles International to London Heathrow? Virgin Atlantic (VS), Air France (AF), Alaska Airlines (AS), WestJet Airlines (WS), Aerolineas Argentinas (AR), and more are currently offering significant savings. Check these airlines for your travel plans.
What's the popular airline to fly from iad to lhr?
United Airlines (UA) offers popular routes from Washington Dulles International Airport (IAD) to London Heathrow Airport (LHR), suitable for a single passenger in Economy class.
What's the cheapest day of the week to fly from iad to lhr?
Friday is the cheapest day to fly from Washington Dulles International to London Heathrow.
What's the cheapest month to fly from iad to lhr?
March is the cheapest month to fly from Washington Dulles International Airport to London Heathrow, offering the most affordable airfare.
What is the cheapest airline to fly from Washington Dulles International to London Heathrow?
Virgin Atlantic (VS) typically offers the most affordable fares for this route, while Air France (AF) and Alaska Airlines (AS) are also frequently within the budget range.

Flights from Washington to London

Origin AirportWashington Dulles International , Washington, US
Destination AirportLondon Heathrow , London, GB
Served by AirlinesAer Lingus, British Airways, American Airlines, Air France, Air Canada, Icelandair, KLM Airlines, TAP - Air Portugal, Virgin Atlantic, Avianca, United Airlines, Delta Airlines
Lowest PriceAmerican Airlines : USD 198
Distance3677 miles

Airlines Flying from Washington Dulles International

Popular Routes

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