Vuelos de United de Washington (IAD) a Londres (LHR) desde $409

Be sure to go to our Covid-19 Travel Advisor to discover if there are any present travel advice reports or quarantine requirements in place in Heathrow Airport when flying in from Dulles Intl. Airport.

If you’re flying from IAD to LHR, the odds are you’ll be disembarking at terminal 2. We can’t say for sure which terminal you’ll be departing from — it’s a good idea to contact your airline.

There certainly are. Save yourself time and trouble and jet straight from Dulles Intl. Airport to Heathrow Airport (LHR) with United Airlines. Avoid lengthy stopovers, reduce the risk of your bags going missing and start your vacation faster — direct flights are the preferred way to travel for many savvy wanderers.

Take in a movie or two, listen to some music or just recline your seat and drift off. Whatever interests you, you’ll need to find a way to entertain yourself during the 8 hours and 2 minutes that it takes to fly from Washington Dulles Intl. Airport (IAD) to London Heathrow with United Airlines.

United Airlines generally operates the Boeing 767-300 or the Boeing 777 between IAD and LHR.

If you need to book a trip from IAD to LHR, you can pick from roughly 4 United Airlines flights each day.

For more info about changing your flight to Heathrow Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, 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.

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 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.