Cheap Flights from Washington D.C. to London Heathrow

Compare Washington D.C. to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Washington D.C. to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to London Heathrow Airport? If you want to travel next month, return fares start from Rs212,128. Find the lowest prices on one-way and return tickets right here.

London.Rs99,464 per passenger.Departing Mon, 19 Oct.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Washington Dulles on Mon, 19 Oct, arriving in London Heathrow.Price includes taxes and charges.From Rs99,464, select.

London.Rs100,357 per passenger.Departing Tue, 14 Jul.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departs from Washington Ronald Reagan on Tue, 14 Jul, arriving in London Heathrow.Price includes taxes and charges.From Rs100,357, select.

London.Rs100,736 per passenger.Departing Tue, 18 Aug.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departs from Washington Ronald Reagan on Tue, 18 Aug, arriving in London Heathrow.Price includes taxes and charges.From Rs100,736, select.

London.Rs102,972 per passenger.Departing Tue, 17 Nov.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Baltimore Washington International on Tue, 17 Nov, arriving in London Heathrow.Price includes taxes and charges.From Rs102,972, select.

London.Rs103,855 per passenger.Departing Fri, 18 Sep.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Fri, 18 Sep, arriving in London Heathrow.Price includes taxes and charges.From Rs103,855, select.

London.Rs106,772 per passenger.Departing Fri, 11 Dec.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Washington Dulles on Fri, 11 Dec, arriving in London Heathrow.Price includes taxes and charges.From Rs106,772, select.

London.Rs107,037 per passenger.Departing Tue, 26 May.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Washington Dulles on Tue, 26 May, arriving in London Heathrow.Price includes taxes and charges.From Rs107,037, select.

London.Rs109,005 per passenger.Departing Sat, 6 Jun.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departs from Washington Ronald Reagan on Sat, 6 Jun, arriving in London Heathrow.Price includes taxes and charges.From Rs109,005, select.

London.Rs110,330 per passenger.Departing Fri, 8 Jan.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Washington Dulles on Fri, 8 Jan, arriving in London Heathrow.Price includes taxes and charges.From Rs110,330, select.

London.Rs110,607 per passenger.Departing Fri, 5 Mar.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Washington Dulles on Fri, 5 Mar, arriving in London Heathrow.Price includes taxes and charges.From Rs110,607, select.

London.Rs112,376 per passenger.Departing Tue, 16 Feb.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Washington Dulles on Tue, 16 Feb, arriving in London Heathrow.Price includes taxes and charges.From Rs112,376, select.

London.Rs124,216 per passenger.Departing Tue, 6 Apr.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Washington Dulles on Tue, 6 Apr, arriving in London Heathrow.Price includes taxes and charges.From Rs124,216, select.

London.Rs131,946 per passenger.Departing Mon, 19 Oct.One-way flight with KLM.Outbound direct flight with KLM departs from Washington Dulles on Mon, 19 Oct, arriving in London Heathrow.Price includes taxes and charges.From Rs131,946, select.

London.Rs137,027 per passenger.Departing Tue, 17 Nov.One-way flight with Iberia.Outbound direct flight with Iberia departs from Washington Dulles on Tue, 17 Nov, arriving in London Heathrow.Price includes taxes and charges.From Rs137,027, select.

London.Rs137,031 per passenger.Departing Tue, 12 Jan.One-way flight with Iberia.Outbound direct flight with Iberia departs from Baltimore Washington International on Tue, 12 Jan, arriving in London Heathrow.Price includes taxes and charges.From Rs137,031, select.

London.Rs137,116 per passenger.Departing Mon, 21 Sep.One-way flight with Iberia.Outbound direct flight with Iberia departs from Baltimore Washington International on Mon, 21 Sep, arriving in London Heathrow.Price includes taxes and charges.From Rs137,116, select.

Find the cheapest month to fly from Washington D.C. to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington D.C. to London Heathrow flights are currently cheapest in October.

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Direct flights from Washington D.C. to London Heathrow

Washington D.C. to London Heathrow: Alternative routes

Compare routes from Washington D.C. to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Washington D.C. to London: Flight information

The things to know before you go.

Cheapest flight found	Rs99,464
Cheapest month to fly	October
Average flight time	7 hrs, 21 mins
Most popular airline	American Airlines
Average flights per week	566

Finding cheap flights from Washington D.C. to London Heathrow: Frequently asked questions

How much are return flights from Washington D.C. to London Heathrow?

The best price we found for a return flight from Washington D.C. to London Heathrow is Rs203,283. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Washington D.C. to London Heathrow?

7 hours and 21 minutes is the average flight time from Washington D.C. to London Heathrow.

Which airlines fly direct from Washington D.C. to London Heathrow?

American Airlines, British Airways and Lufthansa fly direct from Washington D.C. to London Heathrow.

How many flights are there a week from Washington D.C. to London Heathrow?

As of April 2026, there are 566 flights per week flying from Washington D.C. to London Heathrow.

When is the cheapest time to fly from Washington D.C. to London Heathrow?

The cheapest month to fly from Washington D.C. to London Heathrow is usually January.

Which upcoming date is cheapest to fly from Washington D.C. to London Heathrow Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to London Heathrow Airport on Wednesday, 20 January 2027.

Can I get a direct flight from Washington D.C. to London Heathrow Airport?

Yes – the average flight time is 7 hours and 21 minutes.

How can I find the best flight deal to London Heathrow?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Travelling from Washington DC to London Heathrow Airport (LHR): What you need to know

Start your travel planning by considering where you'll take off for your flight from Washington DC to London Heathrow Airport (LHR). Washington Dulles International Airport (IAD) and Baltimore Washington International Airport (BWI) are the main airports in Washington DC.
London is five hours ahead of Washington DC. London Heathrow Airport is located in London, which is in the UTC+0 timezone.
To ensure you catch your flight from Washington DC to LHR, leave enough time to navigate the airport and find your gate. Arriving two hours before international departures and one hour before domestic flights is the general travel rule.
With more travellers during busy periods like April, get to the terminal earlier than usual. Two hours for domestic flights and as much as four for international journeys will help you deal with longer queues. Remember things also get busy during major holidays like Christmas.

Airports in Washington DC

Ronald Reagan Washington National Airport (DCA)

Consider adding a stopover to find cheap flights from Washington DC to LHR. Just deselect 'Direct flights only' when browsing departures from Ronald Reagan Washington National Airport (DCA). Break up your trip (and maybe get a better deal) by stopping at one of these popular airports:
- New York John F. Kennedy International Airport (JFK)
- Newark Liberty International Airport (EWR)
- Boston Logan International Airport (BOS)
The journey from central Washington DC to DCA takes about 25 minutes by public transport. If you drive, ride-share or grab a taxi, you'll cover the 6 kilometres in 10 minutes or so, depending on traffic.
Searching for a convenient hotel close to Ronald Reagan Washington National Airport? If you've booked an early flight from Washington DC to London Heathrow Airport, these accommodation options will have you sleeping moments from your check-in counter:
Of the departures from Ronald Reagan Washington National Airport, 76% land on schedule at their destination.
The address for DCA is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Think about kicking off your journey from Washington Dulles International Airport (IAD). You can book a direct Washington DC to London Heathrow Airport (LHR) plane ticket with departures from here.
When setting off from IAD, you'll have your pick of airlines that operate direct flights from Washington DC to LHR. Take to the skies with any of these carriers:
British Airways is the top choice for passengers flying from IAD to LHR.
Flights between Washington Dulles International Airport and London Heathrow Airport are more likely to reach their destination on time with Virgin Atlantic compared to other carriers.
Split up your flight from Washington DC to London Heathrow Airport with a stop so you can stretch your legs or tick another place off your list. Popular stopovers between Washington Dulles International Airport and LHR include:
- Newark Liberty International Airport (EWR)
- Boston Logan International Airport (BOS)
- Dublin Airport (DUB)
Using public transport, you can travel from central Washington DC to IAD in about 1 hour 10 minutes. The terminal is roughly 40 kilometres away, and making the journey by car takes approximately 45 minutes.
Kick off your holiday early with an additional night away from home. Before catching your Washington DC to LHR flight, kick back in one of these hotels close to Washington Dulles International Airport:
When it comes to flights staying on schedule, Washington Dulles International Airport has an on-time arrival performance of 74%.
You'll find IAD at 1 Saarinen Circle.

Baltimore Washington International Airport (BWI)

Get to your destination faster from Baltimore Washington International Airport (BWI). Direct flights from Washington DC to London Heathrow Airport are available from here.
British Airways is one reputable carrier that offers direct Washington DC to LHR plane tickets from BWI.
Most travellers prefer to fly with British Airways from BWI to LHR.
Among carriers on this route, British Airways leads the way for on-time arrivals.
You can reserve a plane ticket from Washington DC to London Heathrow Airport (LHR) with one or more stops out of Baltimore Washington International Airport (BWI). Here are some of the most popular stopovers between BWI and LHR:
- New York John F. Kennedy International Airport (JFK)
- Boston Logan International Airport (BOS)
- Raleigh-Durham International Airport (RDU)
From central Washington DC, BWI is around 48 kilometres away. It'll take you roughly 40 minutes to reach the airport by car and 50 minutes or so if you're on public transport.
Sleep a little longer and still make your Washington DC to London Heathrow Airport flight with plenty of time to spare. These hotels near Baltimore Washington International Airport make it a breeze to get to the terminal if you're flying out first thing:
Airports have an on-time performance rating that monitors how often flights get to their destinations as expected. At BWI, that figure is 77%.

About London Heathrow Airport (LHR)

The last thing you need is a long journey to your hotel if you're arriving on a late flight from Washington DC to London Heathrow Airport. Check in to one of these accommodation options near LHR instead:
Say yes to new adventures by picking up a London Heathrow Airport rental car. Grab your wheels from Surprice, U-Save or Green Motion to explore London and beyond.
Lock in the best possible rate by reserving your ride around one week ahead of your Washington DC to London Heathrow Airport flight.

Getting from London Heathrow Airport (LHR) to central London

Central London is around 24 kilometres from London Heathrow Airport and takes about 45 minutes to reach by car. See what your options are for heading into the city, whether that's with a car hire, taxi or ride-share.
It takes roughly 25 minutes when travelling by public transport.

How to find the cheapest flights from Washington DC to London Heathrow Airport (LHR)

The lowest price we've found for a one-way ticket from Washington DC to London Heathrow Airport is Rs99,464. For a return flight on this route, the best price is Rs203,283. Depending on the availability and when you book, these fares can change.
Book two months before flying. Pricing trends show that this is the ideal window for finding cheap flights from Washington DC to LHR.
The best month for scoring cheap Washington DC to London Heathrow Airport tickets is July. Use the 'Whole month' tool to compare flight prices, then choose the dates that offer the lowest fares.
There's no need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll notify you as soon as a better deal comes up on plane tickets from Washington DC to LHR.
Filters make it easier to dig up a deal for your flight from Washington DC to London Heathrow Airport. Pick the airlines, flight times and stops that look good to you. Then sort the results by 'Cheapest' to find the lowest price right away.

The best time to fly from Washington DC to London Heathrow Airport (LHR)

January is the quietest month for flights from Washington DC to London Heathrow Airport (LHR), while July is the most popular. Figure out the ideal time to visit London based on whether you want a bustling atmosphere or a more laid-back vibe.
Before locking in your Washington DC to LHR plane ticket, consider what kind of weather works for you. July is the warmest month in London, with temperatures ranging from 11ºC to 26ºC.
If you'd rather travel in cooler conditions, look for a cheap ticket from Washington DC to London Heathrow Airport in January when temperatures are between 0ºC and 9ºC.

More about London

Start your London trip right by choosing the ideal place to stay. Once you've booked your flight from Washington DC to London Heathrow Airport, explore our range of accommodation options including:
There are loads of awesome things to do in London when you're ready to go sightseeing. Kick off your exploring at The British Museum followed by Westminster Abbey and Big Ben.

Explore more of the United Kingdom

You've done London, now it's time to explore other corners of the United Kingdom. Travel around 153 kilometres northwest to Birmingham to check off its top attractions. From Birmingham Museum & Art Gallery to Birmingham Hippodrome Theatre and Bournville Experience, there's plenty to keep you on the go.
Around 145 kilometres west of London, Bristol is another favourite stop in the United Kingdom. Get a taste of what this destination has to offer at Banksey, Clifton Suspension Bridge and Bristol International Balloon Fiesta.