IAD → SATWashington to San Antonio

live

Direct flights from Washington (IAD) to San Antonio (SAT): 14 nonstop departures observed each week across 1 airline. No cancellations were recorded across the 14 tracked flights. The nonstop covers 2,189 km, an estimated 3 hours 18 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and San Antonio. Updated 30 October 2026 at 08:52 UTC.

IAD Washington smooth · +7
SAT San Antonio smooth · +6
2,189 km · ~3h 18m est.
dep bank 08:30–18:0014x weekly
Running clean · 1 airline · 14x weekly · nonstop
89 / 100

route health from live IAD and SAT delay boards

0 of 14 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Flight time~3h 18mestimated from route distance
Weekly departures14x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 14

The week

scheduled departures · origin local time
06121824
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 days
United AirlinesUA

Flights UA1789 varies Mo Tu We Th Fr Su · UA3982 08:30 Sa · UA1869 18:00 daily

History

operated legs · board outcomes
10-29UA1789departed+8
10-29UA1869departed+17
10-28UA1789departed+12
10-28UA1869departed+19
10-27UA1789departed+37
10-27UA1869departed+70
10-26UA1789departed+9
10-26UA1869departed+21
10-25UA1789departed+22
10-25UA1869departed+163
10-24UA1869departed+19
10-24YV3982departed+11
10-23UA1789departed+23
10-23UA1869departed+23

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IADWashington +7 min smooth 🌤 clear · S 4 kt Full IAD delay board →
SATSan Antonio +6 min smooth 🌤 overcast · ENE 5 kt Full SAT delay board →

Weather lens

Conditions are tightest at IAD and SAT: a 33% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +4 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Washington to San Antonio route actually runs

Pro Flight Search records official board updates for nonstop IAD to SAT 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 San Antonio (SAT) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/IAD-SAT
How we measure this →

IAD to SAT questions

Is IAD–SAT running on time right now?

Smooth skies ahead. The departure side at IAD is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on IAD–SAT?

Operators schedule morning departures around 08:30 and evening departures around 18:00 from IAD. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SAT delay card to confirm conditions when you'd arrive.

How long is the flight from IAD to SAT?

Great-circle distance is 2,189 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 185–218 min gate-to-gate on this route.

How often does IAD–SAT fly?

United Airlines runs the route with about 14 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.