£244 Find Cheap Flights from District of Columbia to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 10/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from District of Columbia to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from District of Columbia to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from District of Columbia to Heathrow

Tue, 17 Mar - Tue, 31 Mar
Icelandair Logo
20:40 - 10:50
IAD
-
LHR
10h 10m
1 stop
Icelandair Logo
21:25 - 19:20
LHR
-
IAD
26h 55m
1 stop
£421Icelandair
Tue, 24 Mar - Tue, 14 Apr
Icelandair Logo
20:40 - 19:30
IAD
-
LHR
18h 50m
1 stop
Icelandair Logo
21:25 - 19:20
LHR
-
IAD
26h 55m
1 stop
£422Icelandair
Mon, 20 Apr - Sat, 25 Apr
Scandinavian Airlines Logo
20:20 - 16:00
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
06:40 - 17:00
LHR
-
IAD
15h 20m
1 stop
£423Scandinavian Airlines
Sun, 12 Apr - Thu, 23 Apr
Scandinavian Airlines Logo
20:20 - 16:00
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
07:05 - 17:00
LHR
-
IAD
14h 55m
2 stops
£424Scandinavian Airlines
Wed, 15 Apr - Fri, 24 Apr
Scandinavian Airlines Logo
20:20 - 17:40
IAD
-
LHR
16h 20m
1 stop
Scandinavian Airlines Logo
06:40 - 17:00
LHR
-
IAD
15h 20m
1 stop
£424Scandinavian Airlines
Sun, 15 Mar - Tue, 24 Mar
Virgin Atlantic Logo
14:25 - 07:50
DCA
-
LHR
13h 25m
1 stop
Virgin Atlantic Logo
09:40 - 17:49
LHR
-
DCA
12h 09m
1 stop
£435Virgin Atlantic
Sun, 15 Mar - Tue, 24 Mar
Air Canada Logo
16:10 - 07:10
DCA
-
LHR
11h 00m
1 stop
Air Canada Logo
13:25 - 21:56
LHR
-
DCA
12h 31m
1 stop
£462Air Canada
Sun, 15 Mar - Tue, 24 Mar
Air Canada Logo
16:10 - 07:10
DCA
-
LHR
11h 00m
1 stop
Air Canada Logo
13:25 - 21:56
LHR
-
DCA
12h 31m
1 stop
£464Air Canada
Wed, 18 Mar - Wed, 25 Mar
United Airlines Logo
12:55 - 09:20
DCA
-
LHR
16h 25m
1 stop
United Airlines Logo
13:25 - 12:18
LHR
-
DCA
26h 53m
2 stops
£471United Airlines
Wed, 11 Mar - Tue, 17 Mar
United Airlines Logo
16:10 - 07:10
DCA
-
LHR
11h 00m
1 stop
United Airlines Logo
06:50 - 16:32
LHR
-
DCA
13h 42m
2 stops
£475United Airlines
Useful Info

Good to know - Cheap tickets from District of Columbia to London Heathrow Airport

Low seasonJanuary
Cheapest flight£244
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (13% more expensive on average)
Flight from Washington Dulles Airport to London Heathrow Airport

Flights from District of Columbia to Heathrow: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from District of Columbia to Heathrow 
Learn how KAYAK collects reviews and tips from users.
DeeFlew with United Airlines
IAD
-
LHR
Feb 2025
For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.
EllenFlew with British Airways
IAD
-
LHR
Oct 2024
Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.
CraigFlew with United Airlines
IAD
-
LHR
Jun 2024
Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

FAQs for booking District of Columbia to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from District of Columbia to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from District of Columbia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from District of Columbia to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to District of Columbia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Northampton
Swindon
Slough
Winchester
Croydon
Stansted
Folkestone
Poole
Chichester
Maidstone
Colchester
Chelmsford
Salisbury
Crawley

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

London Heathrow Airport (LHR)