Cheap Flight Tickets from Washington (IAD) to London (LHR), Starting at $399

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

$399

UA United Airlines • 1 stop • 29h 5m

Nov 02 – Nov 06

The cheapest round trip flight from Washington to London (IAD-LHR-IAD) is currently $399

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Cheapest Direct Flight

$466

UA United Airlines • nonstop • 12h

Nov 02

The cheapest nonstop flight from Washington to London (IAD-LHR) is currently $466

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Fastest Flight

11h 50m

The fastest nonstop flight from Washington to London (IAD-LHR) takes 11h 50m

Top Airlines Flying from Washington to London

Turkish Airlines - TK

Turkish Airlines

Delta Airline, DL

Delta Airlines

Air France-AF

Air France

Virgin Atlantic (VS)

Virgin Atlantic

TAP Air Portugal Airline (TP)

TAP - Air Portugal

United Airlines, UA

United Airlines

Lufthansa Airline (LH)

Lufthansa Airlines

American Airlines, AA

American Airlines

Avianca Airline - AV

Avianca

Air Canada-AC

Air Canada

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 02 - Nov 06, Economy
UA
Washington → London
29h 5m
10:35 PM - 9:20 PM • 1 stop
UA
Washington → London
22h 33m
7:40 AM - 4:33 PM • 1 stop
$399
United Airlines
Nov 02 - Nov 06, Economy
UA
Washington → London
12h
6:20 PM - 6:40 AM • nonstop
VS
Washington → London
14h
2:00 PM - 5:40 PM • nonstop
$466
United Airlines
Nov 02 - Nov 06, Economy
UA
Washington → London
30h 44m
6:11 AM - 5:55 AM • 1 stop
UA
Washington → London
13h 55m
12:05 PM - 3:40 PM • nonstop
$535
United Airlines
Nov 02 - Nov 06, Economy
UA
Washington → London
24h
10:15 AM - 5:55 AM • 1 stop
UA
Washington → London
13h 55m
12:05 PM - 3:40 PM • nonstop
$535
United Airlines
Nov 02 - Nov 06, Economy
UA
Washington → London
58h 40m
5:20 PM - 9:40 AM • 1 stop
UA
Washington → London
13h 55m
12:05 PM - 3:40 PM • nonstop
$576
United Airlines
Nov 02 - Nov 06, Economy
TK
Washington → London
30h 25m
2:30 PM - 2:55 PM • 1 stop
TK
Washington → London
33h 20m
6:25 AM - 8:25 PM • 1 stop
$1615
Turkish 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 6:11 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 UA : USD 535
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 10:35 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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