Vuelos de United de Lisboa (LIS) a Washington (IAD) desde $728

It’s always wise to find out about any quarantine requirements and travel advice reports in effect in your destination city. Make sure you visit our Covid-19 Travel Advisor for up-to-date information on catching a flight to Dulles Intl. Airport from LIS.

If you’re flying with United Airlines from Humberto Delgado Airport (LIS) to IAD, you should be able to find out the terminal information once you’re issued with your boarding pass. If not, consult your airline.

If you’re flying with United Airlines from Lisbon Airport to Dulles Intl. Airport, you’ll need to make a stopover. While you’re waiting for your connecting flight, take the opportunity to enjoy a bite to eat or go for a walk.

Watch your favorite TV show, listen to some music or just recline your seat and drift off. You’ll need to find a way to pass the 9 hours and 56 minutes that it takes to get from LIS to IAD with United Airlines.

Making your way between Lisbon Airport and Washington Dulles Intl. Airport (IAD) is simple. There are 7 United Airlines flights connecting LIS and IAD each week.

For more info about changing your flight to Washington Dulles Intl. Airport (IAD), 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.