Cheap Flight Tickets from Washington (IAD) to London (LHR), Starting at $844

Good to Know: Cheapest and Fastest IAD - LHR Flights

Useful information for finding best airline tickets from Washington Dulles International to London Heathrow on your next trip.

Cheapest Round Trip Flight

$844

DL Delta Airlines • nonstop • 12h 15m

Oct 21 – Nov 02

The cheapest round trip flight from Washington to London (IAD-LHR-IAD) is currently $844

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Cheapest Direct Flight

$901

DL Delta Airlines • nonstop • 12h 15m

Oct 21

The cheapest nonstop flight from Washington to London (IAD-LHR) is currently $901

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Fastest Flight

12h 15m

The fastest nonstop flight from Washington to London (IAD-LHR) takes 12h 15m

Top Airlines Flying from Washington to London

Delta Airline, DL

Delta Airlines

Latest Flight Deals from Washington (IAD) to London (LHR)

Compare and book low fare round-trip air tickets from Washington to London. Ideal for travelers with confirmed return itineraries.

Oct 21 - Nov 02, Economy
DL
Washington → London
12h 15m
10:05 PM - 10:40 AM • nonstop
DL
Washington → London
55h
11:45 AM - 3:45 PM • 1 stop
$844
Delta Airlines
Oct 21 - Nov 02, Economy
DL
Washington → London
20h 8m
6:12 PM - 11:20 AM • 1 stop
DL
Washington → London
55h
11:45 AM - 3:45 PM • 1 stop
$849
Delta Airlines
Oct 21 - Nov 02, Economy
DL
Washington → London
20h 50m
12:30 PM - 6:20 AM • 1 stop
DL
Washington → London
55h
11:45 AM - 3:45 PM • 1 stop
$849
Delta Airlines
Oct 21 - Nov 02, Economy
DL
Washington → London
26h 41m
10:14 AM - 7:15 AM • 1 stop
DL
Washington → London
20h 50m
11:30 AM - 7:20 PM • 1 stop
$899
Delta Airlines
Oct 21 - Nov 02, Economy
DL
Washington → London
25h 17m
3:03 PM - 11:20 AM • 1 stop
DL
Washington → London
20h 50m
11:30 AM - 7:20 PM • 1 stop
$899
Delta Airlines
Oct 21 - Nov 02, Economy
DL
Washington → London
25h 6m
10:14 AM - 6:20 AM • 2 stops
DL
Washington → London
20h 15m
8:40 AM - 3:55 PM • 1 stop
$903
Delta Airlines

Fly from Washington to London with the Best Airfare Deals on FareLeaders

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.

FAQs on Washington to London Flights

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
Can I fly from IAD to LHR non-stop?
Yes, you can fly IAD to LHR non-stop on
Which airlines fly nonstop between Washington and London?
The non-stop flights between Washington and London are .
What’s the earliest departure time from IAD to LHR Airport?
The earliest flight leaves IAD at 10:14 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?
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 DL : USD 899
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 10:05 pm

Washington (IAD) to London (LHR): Airport Information

Origin Airport Washington Dulles International , Washington, US
Destination Airport London Heathrow , London, GB
Distance 3677 miles

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