Vuelos de United de Denver (DEN) a Londres (LHR) desde $424

It’s prudent to learn about any travel advice reports and quarantine requirements in place in your destination city. Make sure you visit the Covid-19 Travel Advisor for up-to-date information on catching a flight to Heathrow Airport from Denver Airport.

If you’re flying with United Airlines from DEN, you’ll usually be boarding from the main terminal. If you’re heading to London Heathrow from here, you’ll probably be filing off the aircraft at terminal 2.

You’ll be happy to hear you can go direct from DEN to LHR with United Airlines and avoid annoying layovers. The less time you spend in the air, the more time you’ll have for exploring.

As it’ll take an average of 9 hours and 56 minutes for your United Airlines flight to jet from DEN to LHR, consider putting a couple of travel games in your hand luggage. You never know — the passenger next to you might love a challenge to break up the journey.

Enjoy all that the Boeing 787-9 has to offer when traveling between Denver Intl. Airport (DEN) and Heathrow Airport (LHR) with United Airlines. Typically, this is the aircraft that operates on this leg.

United Airlines currently operates roughly 3 flights per day from DIA airport to London Heathrow.

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