Lisbon to Dulles (LIS–IAD) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
LIS–IAD is served by 2 airlines with nonstop service. TAP Air Portugal and United Airlines lead the route. The flight covers 3,583 miles in approximately 8h 5m. Beyond nonstop, 71 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| TP TAP Air Portugal Also: B6, BT | 14 | 32Q | 8h20-8h30 | – | Star Alliance | B6, BT |
| UA United Airlines Also: AC | 7 | 777 | 8h05 | – | Star Alliance | AC |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Dulles from Lisbon
| Metric | LIS→IAD | OPO→IAD |
|---|---|---|
| Distance from LIS | – | 172 mi |
| Nonstop airlines | 2 | 1 |
| Weekly flights | 45 | – |
| Flight time | 8h 5m | 8h 2m |
Travel Essentials
LIS: WEST · IAD: EDT
When it's 6:00 PM in Lisbon, it's 1:00 PM in Dulles.
Portugal is part of the US Visa Waiver Program. Portuguese passport holders enter the United States for up to 90 days without a visa, but must obtain an approved ESTA (Electronic System for Travel Authorization) before boarding. The ESTA costs USD 21, is valid for 2 years or until the passport expires, and covers multiple entries. Apply at the official CBP site (esta.cbp.dhs.gov) at least 72 hours before departure.
The 90-day stay cannot be extended, and you cannot change immigration status while in the US on the Visa Waiver Program.
Metro Red Line runs from downtown Lisbon (Alameda, Oriente) to the airport in 20–25 minutes (€1.85 single, or €0.48 on a Viva Viagem card). Trains run from 6:30am to 1am. The airport has its own station (Aeroporto) at the end of the Red Line.
Taxis from central Lisbon cost €10–15 and take 15–20 minutes with no traffic. Uber and Bolt are widely available at similar or lower prices. AeroBus (Carris) is slower (30–40 min) but cheaper at €4.
Silver Line Metro runs from Washington Dulles Airport station to Metro Center in about 65 minutes (~$7). The route bypasses I-66 and I-495 congestion entirely. Washington Flyer coach also runs to Wiehle-Reston East station ($6, 15 min) for Metro connection.Taxis and ride-shares to downtown DC cost $55–80 and take 35–55 minutes depending on traffic. Car rental facilities are on-site. Dulles is 27 miles west of the Capitol; it is farther than either DCA or BWI from central DC.
Humid continental climate. Summers are hot and muggy (30–36°C) with frequent afternoon thunderstorms that cause delays June through August. Winters bring cold temperatures (−3 to 5°C) with snow and ice. The Virginia suburbs accumulate more snow than downtown DC, and ice storms are the primary disruption risk.
Dulles sits at higher elevation in Virginia's piedmont and sees more winter precipitation than DCA. Spring and fall are variable. Snowfall is possible into April. Thunderstorms begin from April through May.
LIS–IAD Quick Facts
Frequently Asked Questions
Flights from LIS to IAD
Lisbon Humberto Delgado Airport (LIS) and Washington Dulles International Airport (IAD) are connected by nonstop service from TAP Air Portugal and United Airlines. With 45 weekly departures, this is a heavily served route.
LIS to IAD Flight Duration and Schedule
Nonstop flight time from LIS to IAD ranges from 8 hours 5 minutes to 8 hours 30 minutes. The route covers a distance of 3,583 miles (5,766 km). There are approximately 45 weekly flights outbound and 35 return, totaling 80 flights per week in both directions.
Connecting Options and Alternatives
71 one-stop connections are available, with the fastest taking approximately 9 hours via HPN. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Porto (OPO).