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The cheapest flights to Heathrow found within the past 7 days were $440 round trip and $278 one way. Prices and availability subject to change. Additional terms may apply.
| Carrier | Flight | Depart IAD | Arrive LHR | Mon 9/27 | Tue 9/28 | Wed 9/29 | Thu 9/30 | Fri 10/1 | Sat 10/2 | Sun 10/3 | Stops | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UA918 | 06:15 pm | 06:45 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
 | BA216 | 06:30 pm | 06:50 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| UA924 | 10:05 pm | 10:30 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| BA292 | 10:30 pm | 10:45 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
For any current London Airport (LHR-Heathrow) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Look before you arrange your flight, so you don't get caught out.
Are there direct flights from Washington Dulles Intl. Airport (IAD) to London Heathrow?Virgin Atlantic and British Airways are some of the airlines that advertise nonstop flights from Washington, DC Airport (IAD-Washington Dulles Intl.) to London Airport (LHR-Heathrow). If you're eager to get to your destination the fastest way possible, these might be just the ticket.
If I am not able to travel due to COVID-19, can I change my booking to a later date?For more info about changing your flight to London Heathrow, please visit our Customer Service Portal.
How long is the flight from Washington, DC Airport (IAD-Washington Dulles Intl.) to London Heathrow?If you're flying from Washington to London, you can expect the journey to take about 7 hours and 20 minutes. If this sounds longer than you'd hoped, why not make the most of it? Read about where you're headed, get some last-minute organizing done and have a nap before the adventure begins.
What is the flight distance from Washington, DC Airport (IAD-Washington Dulles Intl.) to London Heathrow?The distance from IAD to London Airport (LHR-Heathrow) is 6,587 mi. Aside from cramming your laptop or phone with more entertainment, it'll be smart to pack a travel pillow and a jacket too.
What airlines fly from IAD to Heathrow Airport?There are several airlines advertising direct flights between Washington and London. Virgin Atlantic (VS) is one of the most popular. This carrier offers about 45 flights every month. Another possibility is British Airways (BA), which has 30 flights each month. The more airlines you take into account, the more likely you are to snag a fantastic deal.
What airlines have practices regarding COVID-19 in place and use social distancing?From the moment you enter the departure terminal to when you leave the arrivals terminal, if you're flying with British Airways, Virgin Atlantic or Aer Lingus you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.
What are the cheapest days to fly?Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.
How can I save money on airline tickets?We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.
*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.
| Traveling From | Washington Dulles Intl. |
|---|---|
| Traveling To | Heathrow |
| Shortest Flight Time | 17 hours 15 mins |
| Earliest Departure Time | 6:15PM BST |
| Latest Departure Time | 10:30PM BST |
| Lowest Flight Price | $440 |
Flight path for flights from Washington Dulles International Airport to London Heathrow Airport
Airlines & Aircraft Used on IAD to LHR Flight Routes
With 19 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times.
Airfares to London LHR from Washington IAD currently cost between $440 and $584. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply.
If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Washington IAD to London LHR on Travelocity starting at $278. Prices and availability subject to change. Additional terms may apply.
Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from IAD to take around 17 hour(s) 15 min(s).
Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from IAD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.
If you’re flexible about when you travel, March is usually the cheapest month to fly from Washington IAD to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first.
Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from IAD have this option.
We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving.