Cheap Flight Tickets from Washington (IAD) to London (LHR), Starting at $1003

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

$1008

DL Delta Airlines • 1 stop • 30h 8m

Nov 23 – Dec 02

The cheapest round trip flight from Washington to London (IAD-LHR-IAD) is currently $1008

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Cheapest Direct Flight

$1003

DL Delta Airlines • nonstop • 12h 5m

Nov 24

The cheapest nonstop flight from Washington to London (IAD-LHR) is currently $1003

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Fastest Flight

12h 5m

The fastest nonstop flight from Washington to London (IAD-LHR) takes 12h 5m

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.

Nov 23 - Dec 02, Economy
DL
Washington → London
30h 8m
12:32 PM - 11:40 AM • 1 stop
DL
Washington → London
20h 15m
8:40 AM - 3:55 PM • 1 stop
$1008
Delta Airlines
Nov 23 - Dec 02, Economy
DL
Washington → London
28h 45m
8:00 AM - 6:25 AM • 1 stop
DL
Washington → London
17h 35m
10:00 AM - 3:55 PM • 1 stop
$1008
Delta Airlines
Nov 23 - Dec 02, Economy
DL
Washington → London
27h 35m
12:35 PM - 10:30 AM • 1 stop
DL
Washington → London
17h 35m
10:00 AM - 3:55 PM • 1 stop
$1008
Delta Airlines
Nov 23 - Dec 02, Economy
DL
Washington → London
15h 45m
6:15 PM - 9:00 AM • 1 stop
DL
Washington → London
20h 15m
8:40 AM - 3:55 PM • 1 stop
$1012
Delta Airlines
Nov 23 - Dec 02, Economy
DL
Washington → London
18h 50m
6:15 PM - 10:45 AM • 1 stop
DL
Washington → London
20h 15m
8:40 AM - 3:55 PM • 1 stop
$1012
Delta Airlines
Nov 23 - Dec 02, Economy
DL
Washington → London
23h 43m
12:32 PM - 7:55 AM • 2 stops
DL
Washington → London
20h 15m
8:40 AM - 3:55 PM • 1 stop
$1013
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 8:00 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 1013
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 8:45 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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