United Flights from Dallas (DFW) to London (LHR) from $939

Once you receive the boarding pass for your United Airlines flight from Dallas, TX (DFW-Dallas-Fort Worth Intl.) to London (LHR-Heathrow), you should be able to see which terminals you'll be jetting in and out of. Your airline will be able to help if you can't find those details on your ticket.

If you want to travel with United Airlines from Dallas, TX (DFW-Dallas-Fort Worth Intl.) to London (LHR-Heathrow), you'll have to make at least one stop. While you're waiting for your connecting flight, use the time to grab a bite to eat or go for a walk.

If the weather is good and the air traffic is on your side, your United Airlines flight should get you from Dallas, TX (DFW-Dallas-Fort Worth Intl.) to London (LHR-Heathrow) in approximately 11 hours and 7 minutes. As it's a long flight, follow the advice of other experienced travelers and get a decent night's sleep before you fly out. Staying hydrated while you're airborne is another travel tip to take on board.

You'll have a lot of options if you're considering flying with United Airlines from DFW to LHR. It's currently operating no fewer than 2 flights each day.

For more info about changing your flight to London (LHR-Heathrow), 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.