United Flights from London (LHR) to Washington (IAD)

Flights typically set off from terminal 2 at London (LHR-Heathrow) if you've booked a seat with United Airlines. Traveling to Washington, DC (IAD-Washington Dulles Intl.)? Touch base with your airline (or do some research online) to find out exactly which terminal you'll be pulling into.

You can go direct from London (LHR-Heathrow) to Washington, DC (IAD-Washington Dulles Intl.) with United Airlines and avoid tiresome layovers. The less time you spend getting to your destination, the more time you'll have to embark on fun adventures.

Your United Airlines flight from London (LHR-Heathrow) to Washington, DC (IAD-Washington Dulles Intl.) should take approximately 9 hours and 17 minutes. But there are plenty of things you can do to distract yourself from constantly staring at the time. Asking the person next to you about their travel plans is one of them. If you'd prefer a different sort of in-flight entertainment, you could always watch a film.

Booked a flight between London (LHR-Heathrow) and Washington, DC (IAD-Washington Dulles Intl.) with United Airlines? On this route, you'll probably be stepping aboard the Boeing 777 or the Boeing 787-9 type aircraft.

If you're traveling from LHR to IAD, you'll discover around 2 United Airlines daily flights to choose from.

For more info about changing your flight to Washington, DC (IAD-Washington Dulles Intl.), please visit our Customer Service Portal.

This just in! Airfares offered on Tuesdays tend to be the cheapest, according to flight demand on Travelocity in 2019. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Monday, as data shows the start of the week 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 2019, flights departing on a Tuesday 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 2019 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 1-2 weeks prior to their travel dates.

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 2019 saved nearly 50% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2019. Savings are subject to change based on departure location, date and destination.