LHR

$289 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 10/2. 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

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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 round-trip 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 round-trip flight deals from District of Columbia to Heathrow

vie., oct. 3 - lun., oct. 6
Scandinavian Airlines Logo
10:05 pm - 8:55 amIAD-LHR
29h 50m2 stops
Scandinavian Airlines Logo
7:05 am - 7:59 pmLHR-IAD
17h 54m2 stops
$491Scandinavian Airlines
Find Deal
mar., oct. 7 - mié., oct. 15
Icelandair Logo
8:30 pm - 11:55 amIAD-LHR
10h 25m1 stop
Icelandair Logo
1:05 pm - 10:10 pmLHR-IAD
14h 05m1 stop
$493Icelandair
Find Deal
mié., sep. 24 - jue., oct. 9
TAP AIR PORTUGAL Logo
10:20 pm - 6:50 pmIAD-LHR
15h 30m1 stop
TAP AIR PORTUGAL Logo
8:00 am - 8:50 pmLHR-IAD
17h 50m1 stop
$554TAP AIR PORTUGAL
Find Deal
mié., sep. 24 - jue., oct. 9
TAP AIR PORTUGAL Logo
10:20 pm - 10:00 pmIAD-LHR
18h 40m1 stop
TAP AIR PORTUGAL Logo
8:00 am - 8:50 pmLHR-IAD
17h 50m1 stop
$556TAP AIR PORTUGAL
Find Deal
mar., oct. 7 - mié., oct. 15
Lufthansa Logo
6:00 am - 8:40 pmDCA-LHR
9h 40m1 stop
Lufthansa Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$598Lufthansa
Find Deal
mar., oct. 7 - mié., oct. 15
Lufthansa Logo
7:00 pm - 10:10 amDCA-LHR
10h 10m1 stop
Lufthansa Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$599Lufthansa
Find Deal
dom., sep. 14 - mar., sep. 23
United Airlines Logo
3:00 pm - 5:55 amDCA-LHR
9h 55m1 stop
United Airlines Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$604United Airlines
Find Deal
mié., oct. 15 - mié., oct. 22
United Airlines Logo
6:00 am - 8:40 pmDCA-LHR
9h 40m1 stop
United Airlines Logo
3:20 pm - 9:37 pmLHR-DCA
11h 17m1 stop
$606United Airlines
Find Deal
mié., oct. 15 - mié., oct. 22
Air Canada Logo
4:35 pm - 9:35 amDCA-LHR
12h 00m1 stop
Air Canada Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$607Air Canada
Find Deal
mar., oct. 7 - mié., oct. 15
Air Canada Logo
9:40 am - 6:30 amDCA-LHR
15h 50m1 stop
Air Canada Logo
6:50 am - 3:51 pmLHR-DCA
14h 01m2 stops
$614Air Canada
Find Deal
Useful Info

Good to know

Low seasonFebruary
Cheapest flight$289
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 18% increase in price.
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 travelers who flew the route from District of Columbia to Heathrow 
DeeFlew with United AirlinesIAD-LHRFeb 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 AirwaysIAD-LHROct 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 AirlinesIAD-LHRJun 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 travelers 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 round-trip 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.

Traveling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Hounslow
Wembley
Slough
Hayes
Richmond
Luton
Salisbury
Ilford
Northampton
Crawley
Guildford
Watford
Eastbourne
Kingston upon Thames
Swindon
Deal
Harrow
Hastings
Southall
St. Albans

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

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