Great-circle route IAD ↔ PWM. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| IAD → PWM Washington to Portland |
27/wk | Daily | United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 142,283 passengers on 2,442 flights between IAD and PWM — about 390 a day — filling 86% of the 165,805 seats flown. Republic Airline carried the most passengers (73%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
United Airlines is the only airline flying the IAD–PWM nonstop.
Recent scheduled departures on this route have used the Embraer 175, Boeing 737.
Aircraft assignments change by season and by time of day.
The distance between Washington Dulles International Airport and Portland International Jetport Airport is 493 miles, or 793 kilometres.
| Great-circle distance | 493 mi |
| Kilometres | 793 km |
| Nautical miles | 428 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. United Airlines flies the route nonstop, with about 27 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-07.
About 1h 36m in the air. That is a great-circle estimate from the 493-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
United Airlines.
In 2025, airlines reported 142,283 passengers on 2,442 scheduled flights between IAD and PWM — about 390 a day — filling 86% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Embraer 175, Boeing 737. Assignments change by season and by time of day.
