$243 Cheap flights from Washington Dulles Intl. to Heathrow (IAD to LHR)

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Find The Best Dates To Fly from Washington Dulles Intl. to Heathrow

Amazing IAD to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $520 round trip and $243 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Nov 4 - Wed, Nov 13
IAD
Washington
LHR
London
$520 Roundtrip, found 7 hours ago
$520
Roundtrip
found 7 hours ago
Select TAP Portugal flight, departing Mon, Nov 4 from Washington to London, returning Wed, Nov 13, priced at $520 found 7 hours ago
Mon, Nov 25 - Wed, Dec 11
IAD
Washington
LHR
London
$521 Roundtrip, found 1 day ago
$521
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Mon, Nov 25 from Washington to London, returning Wed, Dec 11, priced at $521 found 1 day ago
Sat, Aug 24 - Mon, Nov 25
IAD
Washington
LHR
London
$556 Roundtrip, found 4 days ago
$556
Roundtrip
found 4 days ago
Select Icelandair flight, departing Sat, Aug 24 from Washington to London, returning Mon, Nov 25, priced at $556 found 4 days ago
Tue, Oct 8 - Tue, Oct 15
IAD
Washington
LHR
London
$568 Roundtrip, just found
$568
Roundtrip
just found
Select Iberia flight, departing Tue, Oct 8 from Washington to London, returning Tue, Oct 15, priced at $568 just found
Sun, Sep 29 - Fri, Oct 11
IAD
Washington
LHR
London
$576 Roundtrip, found 10 hours ago
$576
Roundtrip
found 10 hours ago
Select United flight, departing Sun, Sep 29 from Washington to London, returning Fri, Oct 11, priced at $576 found 10 hours ago
Tue, Sep 24 - Mon, Sep 30
IAD
Washington
LHR
London
$578 Roundtrip, found 8 hours ago
$578
Roundtrip
found 8 hours ago
Select British Airways flight, departing Tue, Sep 24 from Washington to London, returning Mon, Sep 30, priced at $578 found 8 hours ago
Tue, Nov 5 - Tue, Nov 12
IAD
Washington
LHR
London
$578 Roundtrip, found 8 hours ago
$578
Roundtrip
found 8 hours ago
Select Virgin Atlantic flight, departing Tue, Nov 5 from Washington to London, returning Tue, Nov 12, priced at $578 found 8 hours ago
Wed, Dec 11 - Wed, Dec 18
IAD
Washington
LHR
London
$578 Roundtrip, found 11 hours ago
$578
Roundtrip
found 11 hours ago
Select Delta flight, departing Wed, Dec 11 from Washington to London, returning Wed, Dec 18, priced at $578 found 11 hours ago
Mon, Oct 14 - Tue, Oct 22
IAD
Washington
LHR
London
$583 Roundtrip, found 8 hours ago
$583
Roundtrip
found 8 hours ago
Select Scandinavian Airlines flight, departing Mon, Oct 14 from Washington to London, returning Tue, Oct 22, priced at $583 found 8 hours ago
Wed, Dec 11 - Wed, Dec 18
IAD
Washington
LHR
London
$585 Roundtrip, found 11 hours ago
$585
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Dec 11 from Washington to London, returning Wed, Dec 18, priced at $585 found 11 hours ago

Flight Schedule for IAD to LHR

CarrierFlightDepart IADArrive LHRSun
5/12		Mon
5/13		Tue
5/14		Wed
5/15		Thu
5/16		Fri
5/17		Sat
5/18		Stops
BA21605:55 pm06:15 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA91806:30 pm06:45 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
VS2210:15 pm10:30 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA92410:25 pm10:40 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
BA29210:50 pm11:10 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Best Heathrow Flight and Hotel Packages

Heathrow flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Hotel Riu Plaza London Victoria

Hotel Riu Plaza London Victoria

4 out of 5
Save 100% on your flight
per person
Jun 10 - Jun 18
Roundtrip flight included
Washington (IAD) to London (LHR)
Trebovir Hotel

Trebovir Hotel

3 out of 5
per person
Jun 10 - Jun 18
Roundtrip flight included
Washington (IAD) to London (LHR)
ME London

ME London

5 out of 5
per person
Jul 5 - Jul 10
Roundtrip non-stop flight included
Washington (IAD) to London (LHR)
Yotel London City

Yotel London City

4 out of 5
per person
Jul 5 - Jul 10
Roundtrip non-stop flight included
Washington (IAD) to London (LHR)
The Ampersand Hotel - Small Luxury Hotels of the World

The Ampersand Hotel - Small Luxury Hotels of the World

5 out of 5
per person
Jun 10 - Jun 18
Roundtrip flight included
Washington (IAD) to London (LHR)
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Frequently asked questions

Are there direct flights from Washington Dulles Intl. Airport (IAD) to LHR?
Kick off your escape relaxed and calm and travel straight to Heathrow Airport from IAD. United Airlines and British Airways are among the airlines that offer nonstop services on this flight path.
How long is the flight from Washington Dulles Intl. Airport (IAD) to Heathrow Airport?
If you’re traveling from Sterling to London, you can expect the flight to take an average of 7 hours and 19 minutes. If this sounds longer than you had hoped, why not take advantage of it? Read about where you’re headed, fine tune your itinerary and get as much shut-eye as possible before the adventure begins.
What is the flight distance from IAD to London Heathrow?
With 3,700 mi between Sterling and London, you’ll have plenty of time to relax and unwind. Take advantage of the entertainment on board, do some puzzles or doze for a while.
What airlines fly from IAD to Heathrow Airport (LHR)?
If you’re flying to London from Sterling, you’ll find several airlines that advertise direct flights. One of the best is United Airlines (UA), which has 60 flights each month. If you want more options, check out the fares on offer from British Airways (BA). This airline operates 60 flights on the Sterling to London route each month. Between the two, you’re bound to find the flight that’s perfect for you.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From
Washington Dulles Intl.
Traveling To
Heathrow
Shortest Flight Time
17 hours 15 mins
Earliest Departure Time
5:55PM BST
Latest Departure Time
10:45PM BST
Lowest Flight Price
$520

Route Info

Flight path for flights from Washington Dulles International Airport to London Heathrow Airport


Origin:
IAD - Washington Dulles International Airport
Destination:
LHR - London Heathrow Airport
Distance:
3,687.00 miles


Airlines & Aircraft Used on IAD to LHR Flight Routes


Airline Carrier
Aircraft
Air Canada
Boeing 737-300 pax
Air Canada
Boeing 737-500 pax
Air Canada
Boeing 737-700 pax
Austrian
Boeing 777-300ER
Jet Airways (India)
Boeing 737-900 pax
United Airlines
Boeing 737-700 pax
United Airlines
Boeing 737-800 pax
United Airlines
Boeing 757-200 pax

Discover our best flights from Washington IAD to London LHR. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Washington IAD to London LHR at the right price  

Airfares to London LHR from Washington IAD currently cost between $520 and $585. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Washington IAD to London LHR 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Washington IAD to London LHR on Travelocity starting at $243. Prices and availability subject to change. Additional terms may apply. 

 

Get to London LHR from Washington IAD quicker with direct flights. 

Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from IAD to take around 17 hour(s) 15 min(s).  

 

Find our cheapest airfares for flights from Washington IAD to London LHR

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from IAD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Washington IAD to London LHR today 

If you’re flexible about when you travel, November is usually the cheapest month to fly from Washington IAD to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to London LHR from Washington IAD 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from IAD have this option.  

 

Travel with confidence when you book flights to London LHR from Washington IAD with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.