Dulles (IAD) to Saint Thomas (STT) flights
One airline flies nonstop from Dulles (IAD) to Saint Thomas (STT): United Airlines. The two airports are 1,609 miles (2,590 km) apart. United Airlines is in Star Alliance. There are also 13 ways to fly it with one stop, through San Juan, Philadelphia and Sint Maarten and more.
Airlines flying nonstop from IAD to STT
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to STT with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAD to STT with one stop
13 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via San Juan (SJU)United Airlines and Frontier Airlines, then Cape Air and JetBlue Airways
- Via Philadelphia (PHL)United Airlines, then American Airlines
- Via Sint Maarten (SXM)United Airlines, then Contour AviationLF
- Via Charlotte (CLT)American Airlines the whole way
- Via New York (EWR)United Airlines the whole way
- Via New York (JFK)Delta Air Lines the whole way
- Via Orlando (MCO)Frontier Airlines and United Airlines, then Southwest Airlines
- Via Miami (MIA)American Airlines the whole way
- Via Boston (BOS)United Airlines, then JetBlue Airways and Delta Air Lines
- Via Tampa (TPA)United Airlines and Frontier Airlines, then Breeze Airways
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Nashville (BNA)United Airlines, then Southwest Airlines
- Via Chicago (ORD)United Airlines the whole way
IAD to STT: common questions
Which airlines fly nonstop from IAD to STT?
United Airlines (Star Alliance) flies nonstop from Dulles (IAD) to Saint Thomas (STT).
How far is Dulles from Saint Thomas by plane?
Dulles (IAD) and Saint Thomas (STT) are 1,609 miles (2,590 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 STT 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, JetBlue TrueBlue, Lufthansa Miles & More 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 STT 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 STT with taxes and fees.
Where can I connect between Dulles and Saint Thomas?
The most direct connections are through San Juan (SJU), Philadelphia (PHL), Sint Maarten (SXM), Charlotte (CLT) and New York (EWR). On 6 of them the same airline flies both flights, for example American Airlines through Charlotte.
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.