Need help booking?
Unpublished phone-only deals available
SFZ to IAD: distance & flight time
Smithfield (North Central State Airport) → Washington (Washington Dulles International Airport)
375 mi
603 km · 326 nm
1h 27m
estimated nonstop flight time
Same time
time difference · heading southwest
See live SFZ→IAD fares Phone-only fares on this route — call free
Flight time details
375 miles nonstop takes roughly 1h 27m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- SFZ — North Central State Airport · Smithfield, United States
- IAD — Washington Dulles International Airport · Washington, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SFZ
- BOS · General Edward Lawrence Logan International Airport39 mi away
- PVD · Theodore Francis Green State Airport14 mi away
- NCO · Quonset State Airport23 mi away
- OWD · Norwood Memorial Airport25 mi away
Frequently asked questions
How far is SFZ from IAD?
The flight distance from Smithfield (SFZ) to Washington (IAD) is 375 miles (603 km, 326 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFZ to IAD?
A nonstop flight takes about 1h 27m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from SFZ to IAD?
Nonstop service on SFZ–IAD depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 27m nonstop estimate.
What is the cheapest way to fly from SFZ to IAD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFZ–IAD that never appear on search engines, with no booking fees.
Why are some SFZ to IAD fares phone-only?
Consolidator contracts let us sell certain SFZ–IAD tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.