LHR

$208 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 10/18. 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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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

Mon, Aug 18 - Mon, Aug 25
TAP AIR PORTUGAL Logo
10:20 pm - 5:45 pmIAD-LHR
14h 25m1 stop
TAP AIR PORTUGAL Logo
6:45 pm - 3:20 pmLHR-IAD
25h 35m1 stop
$424TAP AIR PORTUGAL
Find Deal
Wed, Sep 10 - Fri, Sep 19
TAP AIR PORTUGAL Logo
10:20 pm - 3:35 pmIAD-LHR
12h 15m1 stop
TAP AIR PORTUGAL Logo
8:00 am - 3:20 pmLHR-IAD
12h 20m1 stop
$426TAP AIR PORTUGAL
Find Deal
Wed, Oct 29 - Sun, Nov 16
Scandinavian Airlines Logo
9:30 pm - 4:00 pmIAD-LHR
14h 30m1 stop
Scandinavian Airlines Logo
9:05 pm - 5:15 pmLHR-IAD
25h 10m2 stops
$434Scandinavian Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 16
Scandinavian Airlines Logo
9:30 pm - 4:25 pmIAD-LHR
14h 55m2 stops
Scandinavian Airlines Logo
9:05 pm - 5:15 pmLHR-IAD
25h 10m2 stops
$438Scandinavian Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
Air Canada Logo
12:55 pm - 8:35 amDCA-LHR
14h 40m1 stop
Air Canada Logo
9:30 am - 9:51 pmLHR-DCA
17h 21m1 stop
$443Air Canada
Find Deal
Wed, Aug 27 - Wed, Sep 3
Virgin Atlantic Logo
6:30 pm - 10:30 amIAD-LHR
11h 00m1 stop
Virgin Atlantic Logo
9:00 am - 4:20 pmLHR-IAD
12h 20m1 stop
$454Virgin Atlantic
Find Deal
Wed, Aug 27 - Wed, Sep 3
Virgin Atlantic Logo
6:30 pm - 10:30 amIAD-LHR
11h 00m1 stop
Virgin Atlantic Logo
12:35 pm - 4:00 pmLHR-IAD
8h 25mnonstop
$459Virgin Atlantic
Find Deal
Tue, Aug 26 - Tue, Sep 2
Lufthansa Logo
6:35 pm - 6:55 amIAD-LHR
7h 20mnonstop
Lufthansa Logo
4:40 pm - 7:55 pmLHR-IAD
8h 15mnonstop
$471Lufthansa
Find Deal
Tue, Aug 26 - Tue, Sep 2
Air Canada Logo
6:00 am - 10:00 amDCA-LHR
23h 00m1 stop
Air Canada Logo
6:50 am - 3:51 pmLHR-DCA
14h 01m2 stops
$473Air Canada
Find Deal
Sun, Aug 10 - Tue, Aug 19
Lufthansa Logo
5:30 pm - 11:25 amDCA-LHR
12h 55m1 stop
Lufthansa Logo
9:30 am - 4:21 pmLHR-DCA
11h 51m1 stop
$541Lufthansa
Find Deal
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Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$208
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 21% 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
Ilford
Deal
Southall
St. Albans
Folkestone
Chipping Campden
Barnet
Bishop's Stortford
Ascot
Enfield
Ely
Rye
Edgware
Weybridge
Alton
Woodstock
Christchurch
Beaconsfield
Hatfield
Dorking

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

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