Lisbon (LIS) to Dulles (IAD) flights

TAP Air Portugal, United Airlines fly nonstop from Lisbon Humberto Delgado Airport to Washington Dulles International Airport, with about 21 flights a week in July 2026. The 3,591-mile flight takes about 3h 2m gate to gate.

From
LIS
Lisbon
Lisbon Humberto Delgado Airport
To
IAD
Dulles
Washington Dulles International Airport
Distance
3,591 mi · 5,779 km
Flight time
3h 2m
Airlines
2
Seats filled
88%
Flights a week, July 2026
837 flights and 145,069 passengers in 12 months
IADIADLIS
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying LIS to IAD

AirlineFlights a weekAircraftPassengers (12 months)Flight time
TAP Air Portugal14Airbus A330-900neo, Airbus A330-20079,9120m
United Airlines7Boeing 767-400/ER, Boeing 777-200ER/200LR/233LR, Boeing 767-300/300ER65,1578h 12m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

Flights by month

MonthFlightsFlights, relativePassengers
August 202591
15,999
September 202587
14,859
October 202585
15,175
November 202556
10,214
December 202557
9,216
January 202634
5,675
February 202630
4,406
March 202661
10,035
April 202673
13,205
May 202683
14,910
June 202688
15,339
July 202692
16,036

Related

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.