Cheap Flight Tickets from Washington (IAD) to London (LON), Starting at $850

Good to Know: Cheapest and Fastest IAD - LON Flights

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

Cheapest Round Trip Flight

$850

DL Delta Airlines • 1 stop • 17h 30m

Aug 18 – Aug 25

The cheapest round trip flight from Washington to London (IAD-LON-IAD) is currently $850

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Cheapest Direct Flight

$870

DL Delta Airlines • nonstop • 12h 5m

Aug 18

The cheapest nonstop flight from Washington to London (IAD-LON) is currently $870

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Fastest Flight

12h

The fastest nonstop flight from Washington to London (IAD-LON) takes 12h

Top Airlines Flying from Washington to London

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

Air Canada-AC

Air Canada

Iberia airline

Iberia Airlines

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

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

Aug 18 - Aug 25, Economy
DL
Washington → London
17h 30m
5:40 PM - 9:30 AM • 1 stop
DL
Washington → London
13h 20m
5:55 PM - 8:55 PM • nonstop
$850
Delta Airlines
Aug 18 - Aug 25, Economy
EI
Washington → London
27h 30m
9:05 PM - 6:55 PM • 1 stop
EI
Washington → London
21h 45m
7:40 AM - 3:45 PM • 1 stop
$867
Aer Lingus
Aug 18 - Aug 25, Economy
UA
Washington → London
34h 5m
12:35 PM - 9:20 AM • 1 stop
UA
Washington → London
5h 20m
4:40 PM - 8:00 PM • nonstop
$1004
United Airlines
Aug 18 - Aug 25, Economy
IB
Washington → London
20h 35m
8:25 PM - 2:00 PM • 1 stop
W9
Washington → London
25h 50m
8:00 AM - 6:50 PM • 1 stop
$1017
Iberia Airlines
Aug 18 - Aug 25, Economy
IB
Washington → London
24h 15m
8:25 PM - 4:20 PM • 1 stop
IB
Washington → London
23h 55m
9:15 AM - 6:50 PM • 1 stop
$1230
Iberia Airlines
Aug 18 - Aug 25, Economy
EI
Washington → London
18h 55m
5:15 PM - 9:50 AM • 1 stop
FR
Washington → London
21h 40m
11:35 AM - 7:35 PM • 1 stop
$1390
Aer Lingus

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 LON?
The most popular airline flying from Washington to London are
Can I fly from IAD to LON non-stop?
Yes, you can fly IAD to LON 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 LON Airport?
The earliest flight leaves IAD at 12:35 pm and lands in LON - London All Airport
What are the airports in London?
LON
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 LON?
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 LON, which is 3676.74 miles by air.
Which airlines provide the cheapest flights from Washington (IAD) to London (LON) ?
In the past couple of days, the cheapest tickets to LON from IAD were found on EI : USD 1390
Do I need a passport to fly between IAD and LON?
Yes
What’s the latest departure time from IAD to LON ?
The last flight leaves IAD at 10:55 pm

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

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

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