Cheap flights from Dulles Intl (IAD) to Heathrow (LHR)

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How to find the cheapest flight from
Dulles Intl (IAD) to Heathrow (LHR)

All the information you need to plan the best IAD to LHR flight in 2022: compare Dulles Intl to Heathrow flight prices with the expected peak season, weather and rainfall in Heathrow.
IAD - LHR
Price
$641 - $849
LHR
Temperature
39.2 - 62.6 °F
LHR
Rainfall
1.6 - 2.8 inches

Popular in

December

High demand for flights, 15% potential price rise

Cheapest in

February

Best time to find cheap flights, 12% potential price drop

Round-trip from

$641

From Washington, D.C. Dulles Intl to London Heathrow

One-way from

$310

One-way flight from Washington, D.C. Dulles Intl to London Heathrow

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

March can be a great time to fly to London Heathrow Airport from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $709. Cheapflights users have found deals in the month of March for as cheap as $499. The most expensive prices can be found in the month of June.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

To save on the cost of your flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, book at least 54 days before your planned departure. Booking around this time can save you about 30% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $825 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $954.

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport (IAD - LHR)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport as you normally would.

Cheap flights from Dulles Intl to Heathrow in July, August 2022

The best prices found for IAD to LHR flights for July, August
24 Aug - 31 Aug
$555pp
IAD
Washington, D.C. Dulles Intl
Virgin Atlantic
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
IAD
Washington, D.C. Dulles Intl
23 Aug - 29 Aug
$558pp
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
23 Aug - 15 Sep
$563pp
IAD
Washington, D.C. Dulles Intl
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
IAD
Washington, D.C. Dulles Intl

Washington, D.C. Dulles Intl to Heathrow 2022 flight deals

Cheap flights to Heathrow from Dulles Intl found for this year
28 Oct - 7 Nov
$442pp
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
12 Nov - 27 Nov
$443pp
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
25 Oct - 6 Nov
$445pp
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl

Non-stop flights to Heathrow from Dulles Intl

Save time with Dulles Intl to Heathrow direct flight deals
24 Aug - 31 Aug
$576pp
IAD
Washington, D.C. Dulles Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
IAD
Washington, D.C. Dulles Intl
13 Sep - 4 Oct
$582pp
IAD
Washington, D.C. Dulles Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
IAD
Washington, D.C. Dulles Intl
21 Sep - 28 Sep
$596pp
IAD
Washington, D.C. Dulles Intl
Virgin Atlantic
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Virgin Atlantic
Non-Stop
IAD
Washington, D.C. Dulles Intl

Last minute flights from Dulles Intl to Heathrow

Late deals on round-trip flights to Heathrow from Dulles Intl, departing today and this week
11 Jul - 15 Sep
$825pp
IAD
Washington, D.C. Dulles Intl
Icelandair
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Icelandair
 
1 STOP
IAD
Washington, D.C. Dulles Intl
10 Jul - 12 Sep
$836pp
IAD
Washington, D.C. Dulles Intl
Aer Lingus
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Aer Lingus
 
1 STOP
IAD
Washington, D.C. Dulles Intl
10 Jul - 1 Sep
$852pp
IAD
Washington, D.C. Dulles Intl
Aer Lingus
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Aer Lingus
 
1 STOP
IAD
Washington, D.C. Dulles Intl

One-way flights to Heathrow from Washington, D.C. Dulles Intl

The cheapest one-way flights from Dulles Intl to Heathrow
4:50 pm - 9:55 am
Aer Lingus
1 Stop
12h 05m
IAD - LHR
Aer Lingus
$310
Gotogate
4:35 pm - 4:20 pm
Icelandair
1 Stop
18h 45m
IAD - LHR
Icelandair
$319
oojo
9:10 am - 10:20 am
Major Airline
1 Stop
20h 10m
IAD - LHR
Major Airline
$320
JustFly

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Dulles Intl</span> to <span class="emphasized">Heathrow</span> flights.

Flight FAQs

From Dulles Intl to Heathrow

Which airlines flying from Washington, D.C. Dulles Intl to London Heathrow have flexible cancellations due to COVID-19?

Some of our airline partners flying from Washington, D.C. Dulles Intl to London Heathrow have new flexible policies in place due to COVID-19. United Airlines, British Airways, and Lufthansa are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like United Airlines with this kind of flexibility.

Can I find flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport for under $500 on Cheapflights?

Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport for under $500. The cheapest flight booked recently is on Icelandair for just $431, but on average you can expect to pay $450.

Are there nonstop flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport for under $600 on Cheapflights?

Cheapflights has at least 20 direct flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport under $600. A good price for a nonstop flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport is less than $619.

Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to London Heathrow Airport for under $900?

There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport within the next 7 days for less than $900.

What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport round-trip?

Icelandair, at $431, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.. Icelandair is priced at 40% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport one-way?

One-way options have recently been found by users for as low as $246 on Aer Lingus. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $260 and Icelandair from $300 one-way.

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

American Airlines, Air Canada and Air France are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

On average you can expect to pay $4,567 for a flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport. The cheapest flight overall is $254 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $442.

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to London Heathrow Airport?

Consider Singapore Airlines (77%), Air Canada (67%) or Austrian Airlines (67%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to London Heathrow Airport.

COVID Restrictions

View COVID Travel Restrictions for Heathrow (LHR)

Do I need a COVID test to fly to Heathrow from Dulles Intl?

Information is based on travel restrictions from Washington, D.C. Dulles Intl to London Heathrow

Most visitors from Washington, D.C. Dulles Intl can enter London Heathrow without restrictions.

COVID-19 testing requirements
Visitors from Washington, D.C. Dulles Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering London Heathrow.

Quarantine requirements
Visitors from Washington, D.C. Dulles Intl are not required to quarantine after entering London Heathrow.

Do I need a test to fly back to Dulles Intl from Heathrow?

Returning to Washington, D.C. Dulles Intl from London Heathrow

COVID-19 testing requirements
Visitors from London Heathrow are not required to present a negative COVID-19 PCR test or antigen result upon entering Washington, D.C. Dulles Intl.

Quarantine requirements
Visitors from London Heathrow are not required to quarantine after entering Washington, D.C. Dulles Intl.

Hide COVID Travel Restrictions for Heathrow (LHR)

Alternative routes for Dulles Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Heathrow

Things to know before you go - useful duration and weather info for your trip from Dulles Intl to Heathrow.
Today's exchange rate
$1 = £0.83
Average temperature for July in Heathrow
75.2 °F
Avg rainfall for July in Heathrow
1.7 ″

Airports servicing Washington, D.C.

Airports servicing London

Top 10 airlines flying from Washington, D.C. Dulles Intl to London Heathrow

The chart below displays the airlines Cheapflights users traveling from Dulles Intl to Heathrow choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Juneyao Airlines
$15 $21 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Virgin Atlantic
$294 $757 No cancel fee 72%
KLM
$327 $668 No cancel fee 75%
TAP AIR PORTUGAL
$352 $552 No cancel fee N/A
PLAY
$365 $593 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by PLAY. Please check directly on their website for additional information.

Scandinavian Airlines
$384 $644 No cancel fee 77%
Brussels Airlines
$385 $787 No cancel fee N/A
Icelandair
$402 $630 No cancel fee 76%
WOW air
$410 $625 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by WOW air. Please check directly on their website for additional information.

Iberia
$497 $716 No cancel fee 77%

Hourly flight availability from Dulles Intl to Heathrow

See what time of day planes typically take off from Dulles Intl towards Heathrow.
Evening 6 PM to midnight 45% of IAD to LHR departures
Afternoon Noon to 6 PM 38% of IAD to LHR departures
Morning 6 AM to noon 16% of IAD to LHR departures
Early morning Midnight to 6 AM 1% of IAD to LHR departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Dulles Intl to Heathrow
See how many times per day planes take to the skies headed from Dulles Intl to Heathrow.
Sunday
26 daily flights
Monday
21 daily flights
Tuesday
31 daily flights
Wednesday
26 daily flights
Thursday
26 daily flights
Friday
26 daily flights
Saturday
26 daily flights
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