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Find Cheap Flights from London Heathrow to Washington Dulles Intl (LHR - IAD)

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London Heathrow to Washington Dulles Intl Flight Information

Avg. Flight Duration 7h 58m
Flights Arrive in Washington Dulles Intl
Flights Depart from London Heathrow
Flight Price $331
Distance 3,667 miles
Airlines Virgin Atlantic, Delta, Lufthansa

Good to Know

Low Season:
November
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
16%
expected price increase
Average Price:
$1077
(avg. price over the last 2 weeks)
Good Deal:
$636
or less (round trip)

When to Book Flights from London Heathrow to Washington Dulles Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $636 or less.
The cheapest flight from London Heathrow to Washington Dulles Intl was found 34 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is November.
Morning departure is around 17% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to Washington Dulles Intl Flights

How long does a flight from London Heathrow to Washington Dulles Intl take?
An average nonstop flight takes 8h 20m, covering a distance of 3667 miles.
How many flights are there between London Heathrow and Washington Dulles Intl?
There are 311 (nonstop) flights between London Heathrow and Washington Dulles Intl per week, averaging 43 per day.
Which airlines provide the cheapest flights from London Heathrow to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Virgin Atlantic ($331), Delta ($358) and Lufthansa ($516).
Do I need a passport to fly between London Heathrow and Washington Dulles Intl?
Yes.
Which airlines fly most frequently between London Heathrow and Washington Dulles Intl?
Air Canada (5 times daily), Austrian Airlines (5 times daily), United (5 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly London Heathrow to Washington Dulles Intl?
For London Heathrow to Washington Dulles Intl, Thursday is the cheapest day to fly on average and Friday is the most expensive. Flying from Washington Dulles Intl back to London Heathrow, the best deals are generally found on Monday, with Saturday being the most expensive.

Book cheap flights from London Heathrow to Washington Dulles Intl (round-trip)

Airports
Origin
London
$331
only
$331
Destination
Washington
$331
only
$331
Thu, Mar 7
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Thu, Mar 14
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 7 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
SEA
Excellent 9.0

Food and snacks!!!!!

LHR
IAD
Excellent 10.0

The food and service was excellent. Love it!

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LHR
IAD
Excellent 10.0

Seems like they are always bringing you something. Very friendly. Great entertainment to choose from. Plenty of leg room even for a tall person like myself (at least compared to other airlines).

LAX
BNE
Excellent 8.6

Lots of leg room, even in economy.

Entertainment choices were a bit sparse.

Sat, Dec 8
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Sat, Dec 15
IAD
Washington Dulles Intl
LHR
London Heathrow
14h 00m
Trip: 8 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 20,314 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
ATL
LAX
Good 6.3

Seatback tv.

Stewardess berated a man for leaving his backpack on the floor in front of him rather than politely addressing the issue. She told him you know better than that and don’t ever do that again. It was totally uncalled for.

JFK
MXP
Good 7.6

There were actual meals served on the flight. They were pretty good. Free movies available.

There was one cranky flight attendant. The seats don’t recline quite enough to be able to sleep.

DTW
CLT
Excellent 8.0

Didn’t get our beverage and snack till we were almost ready to land at Charlotte

CLT
LGA
Mediocre 3.3

We were deplained twice from two different plains going to LGA. We are now booked on a third plain going to JFK. Hope we can get home. I have a surgical appointment tomorrow.

We bought First Class tickets. But we were downgraded How do you think we should feel ? We have been in Charlotte since 9:30 AM It is now 6:45 PM Should we use the train to go home?

AMS
DTW
Excellent 8.0

Didn’t like the fact that online check in didn’t work on the Delta app.di

Fri, Sep 21
LHR
London Heathrow
IAD
Washington Dulles Intl
22h 46m
Sun, Sep 23
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 35m
Trip: 3 days
8.5ExcellentShow reviews
Overall 8.5 Excellent
Based on 7 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.7
SEA
FRA
Excellent 10.0

Food excellent. Cabin crew friendly and professional. Also very attentive.

Cabin got warm at the end of flight. And because I am usually cold, I can only imagine how warm others felt

ARN
FRA
Good 7.0

Efficient, on time, and the experienced air crew did well with a wicked wind shear at takeoff.

No movie, no passenger loading from the rear.

ATH
FRA
Okay 5.3

Crew and Food

DELAYED BOARDING, OVER CROWDED TOO TIED, VERY HARD TO GO TO TOILET OR STAND

BOS
FRA
Good 7.6

Great service and timeliness.

I wasn’t offered earphone headset so I could not enjoy entertainment.

GVA
FRA
Excellent 8.3

The Crew was very helpful, they were always around and offering all kind of help.

The food was very cheap, we had no choice for a better offer. We were hungry and had to eat.... The seats were changed at the last minute, we were very upset!!! We did our confirmation on line and get our seats assigned. When we got to the airport we were surprised that they changed them.

Thu, Oct 11
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 20m
Sun, Oct 14
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 25m
Trip: 4 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
JFK
LHR
Excellent 10.0

The flight felt so short, service was amazing, food was good. Great overall experience.

LHR
SEA
Excellent 9.0

Food and snacks!!!!!

LHR
IAD
Excellent 8.6

VS is usually an efficient operation, and this flight was no exception. Crew were polite and helpful (flew in economy on this leg). IFE had an excellent selection, food was good, etc.

Boarded really early, which leaves you sitting on the plane before takeoff for awhile. Seats (Airbus 333) could use some more padding.

LHR
IAD
Excellent 9.3

Friendly service. Safe, on time flight.

Chicken lunch was just so-so.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

Thu, Nov 1
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Sun, Nov 11
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 11 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Excellent 9.3

Friendly service. Safe, on time flight.

Chicken lunch was just so-so.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LHR
IAD
Good 6.0

The cabin was extremely dirty, the food was awful.

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

Wed, Dec 5
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Wed, Jan 16
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 43 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LAX
BNE
Excellent 8.6

Lots of leg room, even in economy.

Entertainment choices were a bit sparse.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

Sat, Feb 2
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Wed, Feb 6
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 5 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

JFK
LHR
Excellent 10.0

The flight felt so short, service was amazing, food was good. Great overall experience.

LHR
IAD
Excellent 10.0

Seems like they are always bringing you something. Very friendly. Great entertainment to choose from. Plenty of leg room even for a tall person like myself (at least compared to other airlines).

LHR
SEA
Excellent 9.0

Food and snacks!!!!!

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

Thu, Nov 8
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Fri, Nov 16
IAD
Washington Dulles Intl
LHR
London Heathrow
9h 05m
Trip: 9 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Excellent 10.0

The food and service was excellent. Love it!

LHR
IAD
Good 6.0

The cabin was extremely dirty, the food was awful.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LHR
SEA
Excellent 9.0

Food and snacks!!!!!

Sun, Jan 27
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Wed, Feb 20
IAD
Washington Dulles Intl
LHR
London Heathrow
12h 29m
Trip: 25 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Good 6.0

The cabin was extremely dirty, the food was awful.

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

LHR
IAD
Excellent 8.6

VS is usually an efficient operation, and this flight was no exception. Crew were polite and helpful (flew in economy on this leg). IFE had an excellent selection, food was good, etc.

Boarded really early, which leaves you sitting on the plane before takeoff for awhile. Seats (Airbus 333) could use some more padding.

Tue, Mar 5
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Sun, Mar 10
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 6 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Excellent 10.0

The food and service was excellent. Love it!

LAX
BNE
Excellent 8.6

Lots of leg room, even in economy.

Entertainment choices were a bit sparse.

JFK
LHR
Excellent 10.0

The flight felt so short, service was amazing, food was good. Great overall experience.

LHR
SEA
Excellent 9.0

Food and snacks!!!!!

LHR
IAD
Excellent 9.3

Friendly service. Safe, on time flight.

Chicken lunch was just so-so.

Thu, Jan 10
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Fri, Jan 18
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 9 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

LHR
IAD
Excellent 10.0

The food and service was excellent. Love it!

LHR
IAD
Excellent 9.3

Friendly service. Safe, on time flight.

Chicken lunch was just so-so.

LHR
IAD
Excellent 10.0

Seems like they are always bringing you something. Very friendly. Great entertainment to choose from. Plenty of leg room even for a tall person like myself (at least compared to other airlines).

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

Tue, Feb 5
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 45m
Tue, Feb 26
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 15m
Trip: 22 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

LAX
BNE
Excellent 8.6

Lots of leg room, even in economy.

Entertainment choices were a bit sparse.

IAD
LHR
Good 6.3

Virgin Atlantic offers good service at a reasonable price to/from the US to London. Good food service and unbelieveable number of movies and entertainment to choose from.

The seating and leg room in economy classic were inadequate. We felt way too confined in our seats and the leg room was a joke. I am only 6' tall and this was unacceptable. We will try to upgrade for the return trip.

LHR
IAD
Excellent 8.6

VS is usually an efficient operation, and this flight was no exception. Crew were polite and helpful (flew in economy on this leg). IFE had an excellent selection, food was good, etc.

Boarded really early, which leaves you sitting on the plane before takeoff for awhile. Seats (Airbus 333) could use some more padding.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

Mon, Sep 24
LHR
London Heathrow
IAD
Washington Dulles Intl
8h 20m
Sat, Sep 29
IAD
Washington Dulles Intl
LHR
London Heathrow
7h 25m
Trip: 6 days
9.1ExcellentShow reviews
Overall 9.1 Excellent
Based on 23 reviews
Overall
8.0
Boarding
8.2
Comfort
7.7
Crew
8.4
Entertainment
7.9
Food
7.7
LAX
BNE
Excellent 8.6

Lots of leg room, even in economy.

Entertainment choices were a bit sparse.

LHR
IAD
Excellent 10.0

We liked everything about our Virgin Atlantic flight. They could not have been more helpful from the time we got our Boarding passes in London until we got off the plane in Washington DC.

There was nothing to dislike on this part of our trip with Virgin Atlantic.

JFK
LHR
Excellent 10.0

The flight felt so short, service was amazing, food was good. Great overall experience.

LHR
IAD
Excellent 8.6

VS is usually an efficient operation, and this flight was no exception. Crew were polite and helpful (flew in economy on this leg). IFE had an excellent selection, food was good, etc.

Boarded really early, which leaves you sitting on the plane before takeoff for awhile. Seats (Airbus 333) could use some more padding.

MEL
HKG
Excellent 8.3

We paid for ecomony x which gave us priority check in and boarding plus first meal. Very impressed, we had an exit row seat and the flight attendant who sat opposite us was extremely friendly.

I wish the economy x seats weren’t located next to the toilets... it’s pretty bothersome with the noise, smells and light emitted

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