£270 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 14/5. 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

Mon, 20 Apr - Tue, 5 May
TAP AIR PORTUGAL Logo
22:35 - 22:00
IAD
-
LHR
18h 25m
1 stop
TAP AIR PORTUGAL Logo
19:50 - 15:10
LHR
-
IAD
24h 20m
1 stop
£485TAP AIR PORTUGAL
Mon, 20 Apr - Thu, 30 Apr
Scandinavian Airlines Logo
20:20 - 16:25
IAD
-
LHR
15h 05m
2 stops
Scandinavian Airlines Logo
06:40 - 17:00
LHR
-
IAD
15h 20m
1 stop
£486Scandinavian Airlines
Sun, 19 Apr - Thu, 23 Apr
Scandinavian Airlines Logo
20:20 - 16:25
IAD
-
LHR
15h 05m
2 stops
Scandinavian Airlines Logo
10:20 - 17:00
LHR
-
IAD
11h 40m
1 stop
£487Scandinavian Airlines
Thu, 14 May - Sun, 31 May
Air Canada Logo
16:05 - 09:35
IAD
-
LHR
12h 30m
1 stop
Air Canada Logo
09:30 - 18:58
LHR
-
IAD
14h 28m
1 stop
£490Air Canada
Tue, 19 May - Wed, 3 Jun
Air Canada Logo
15:45 - 10:00
IAD
-
LHR
13h 15m
1 stop
Air Canada Logo
09:30 - 18:58
LHR
-
IAD
14h 28m
1 stop
£491Air Canada
Mon, 18 May - Tue, 2 Jun
Air Canada Logo
15:45 - 10:00
IAD
-
LHR
13h 15m
1 stop
Air Canada Logo
09:30 - 18:58
LHR
-
IAD
14h 28m
1 stop
£491Air Canada
Sun, 19 Apr - Wed, 6 May
TAP AIR PORTUGAL Logo
22:35 - 22:55
IAD
-
LHR
19h 20m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:10
LHR
-
IAD
14h 10m
1 stop
£492TAP AIR PORTUGAL
Sun, 26 Apr - Thu, 7 May
TAP AIR PORTUGAL Logo
22:35 - 22:00
IAD
-
LHR
18h 25m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:10
LHR
-
IAD
14h 10m
1 stop
£493TAP AIR PORTUGAL
Thu, 23 Apr - Wed, 6 May
Multiple Airlines Logo
06:00 - 20:45
DCA
-
LHR
9h 45m
1 stop
Multiple Airlines Logo
07:40 - 22:59
LHR
-
DCA
20h 19m
2 stops
£543Multiple Airlines
Thu, 23 Apr - Wed, 6 May
JetBlue Logo
06:00 - 20:45
DCA
-
LHR
9h 45m
1 stop
JetBlue Logo
11:55 - 22:59
LHR
-
DCA
16h 04m
1 stop
£559JetBlue
Useful Info

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

Low seasonJanuary
Cheapest flight£270
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Reagan Washington National 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)