Dulles (IAD) to Lisbon (LIS) flights
2 airlines fly nonstop from Dulles (IAD) to Lisbon (LIS): TAP Portugal and United Airlines. The two airports are 3,583 miles (5,766 km) apart. TAP Portugal and United Airlines are in Star Alliance. There are also 33 ways to fly it with one stop, through Philadelphia, New York and New York and more.
Airlines flying nonstop from IAD to LIS
- TAP PortugalStar Alliance · bookable with 12 programsWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to LIS with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks TAP Portugal, United Airlines
- Air New Zealand AirpointsBooks TAP Portugal, United Airlines
- ANA Mileage ClubBooks TAP Portugal, United Airlines
- Avianca LifeMilesBooks TAP Portugal, United Airlines
- Emirates SkywardsBooks TAP Portugal, United Airlines
- EVA Air Infinity MileageLandsBooks TAP Portugal, United Airlines
- Lufthansa Miles & MoreBooks TAP Portugal, United Airlines
- Singapore Airlines KrisFlyerBooks TAP Portugal, United Airlines
- TAP Miles&GoBooks TAP Portugal, United Airlines
- Thai Royal Orchid PlusBooks TAP Portugal, United Airlines
- Turkish Airlines Miles&SmilesBooks TAP Portugal, United Airlines
- United MileagePlusBooks TAP Portugal, United Airlines
- JetBlue TrueBlueBooks United Airlines
IAD to LIS with one stop
33 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Philadelphia (PHL)United Airlines, then American Airlines
- Via New York (JFK)Delta Air Lines the whole way
- Via New York (EWR)United Airlines the whole way
- Via Boston (BOS)United Airlines, then TAP Portugal and Delta Air Lines
- Via Montreal (YUL)Air Canada the whole way
- Via Toronto (YYZ)Air Canada the whole way
- Via Madrid (MAD)Iberia the whole way
+2
- Via Casablanca (CMN)Royal Air Maroc the whole way
- Via Dublin (DUB)Aer Lingus the whole way
- Via Toulouse (TLS)United Airlines, then Ryanair and TAP Portugal
- Via Chicago (ORD)United Airlines, then TAP Portugal
- Via Reykjavik (KEF)Icelandair the whole way
- Via London (LHR)British Airways the whole way
- Via Barcelona (BCN)United Airlines, then TAP Portugal, Vueling and 2 more
+1 - Via Edinburgh (EDI)United Airlines, then easyJet and Ryanair
IAD to LIS: common questions
Which airlines fly nonstop from IAD to LIS?
TAP Portugal (Star Alliance) and United Airlines (Star Alliance) fly nonstop from Dulles (IAD) to Lisbon (LIS).
How far is Dulles from Lisbon by plane?
Dulles (IAD) and Lisbon (LIS) are 3,583 miles (5,766 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAD to LIS award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, Lufthansa Miles & More, Singapore Airlines KrisFlyer and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAD to LIS cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAD to LIS with taxes and fees.
Where can I connect between Dulles and Lisbon?
The most direct connections are through Philadelphia (PHL), New York (JFK), New York (EWR), Boston (BOS) and Montreal (YUL). On 16 of them the same airline flies both flights, for example Delta Air Lines through New York.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.