United AirlinesUA50% on time
Flights UA4563 08:15 Mo Tu We Th Fr · UA4578 08:15 Tu We Th Fr · UA4383 12:45 daily · UA6130 12:45 Tu We Th Fr
live
Direct flights from Washington (IAD) to Greenville/Greer/Spartanburg (GSP): 7 nonstop departures observed each week across 1 airline. 52% of the last 23 operated flights arrived within 15 minutes of schedule. The median arrival is 15 minutes late. No cancellations were recorded across the 23 tracked flights. The nonstop covers 618 km, an estimated 1 hour 18 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and Greenville/Greer/Spartanburg. Updated 11 September 2026 at 14:18 UTC.
IAD
Washington
smooth · +14
GSP
Greenville/Greer/Spartanburg
tracking
618 km · ~1h 18m est.
Runs rough · 1 airline · 7x weekly · nonstop
52% on time
of the last 23 operated IAD → GSP flights arrived within 15 minutes
Median arrival delay is +15 min. 0 of 23 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+15 minacross the last 23 operated legs
Flight time~1h 18mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 23
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-07AXO369departed+44
09-07KPO500departed+0
09-07VET806departed+0
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Washington to Greenville/Greer/Spartanburg route actually runs
Pro Flight Search records official board updates for nonstop IAD to GSP flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Washington (IAD) to Greenville/Greer/Spartanburg (GSP) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAD-GSP
IAD to GSP questions
Is IAD–GSP running on time right now?
Smooth skies ahead. The departure side at IAD is the weaker end, route health score 82/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on IAD–GSP?
Operators schedule morning departures around 08:15 and evening departures around 17:25 from IAD. Earlier flights typically land before destination-airport delays accumulate later in the day; check the GSP delay card to confirm conditions when you'd arrive.
How long is the flight from IAD to GSP?
Great-circle distance is 618 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 74–83 min gate-to-gate on this route.
How often does IAD–GSP fly?
United Airlines runs the route with about 27 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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