Vuelos de United de Denver (DEN) a Lisboa (LIS) desde $623

It’s prudent to know about any quarantine requirements and travel advice reports in place in your destination. Ensure you go to our Covid-19 Travel Advisor for up-to-date info on flying to Lisbon Airport from Denver Intl. Airport (DEN).

You should find out which terminal United Airlines departs from at DEN once you receive your ticket. The same goes for information regarding your arrival at Humberto Delgado Airport (LIS). If those details are missing, ask your airline.

As you can’t fly nonstop from DIA airport to Lisbon/Portela Airport with United Airlines, make the most of your layover. Shout yourself one of your favorite refreshments at a cozy airport bar, or explore the terminal and enjoy some retail therapy.

Life is one grand journey — and so is your trip from DIA airport to Lisbon Airport with United Airlines. With an average flying time of 10 hours and 43 minutes, be sure to bring essentials on board like noise-canceling headphones, a jacket and toiletries.

Journeying between DIA airport and Humberto Delgado Airport (LIS) is easy. There are no fewer than 7 United Airlines flights that connect DEN and LIS each week.

For more info about changing your flight to LIS, 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.