Washington to San Antonio (IAD-SAT): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and San Antonio (SAT), roughly 14 times a week. In the timetable below it flies as UA 1789, UA 1869, and UA 3982, scheduled at 3h 34m to 3h 53m for the 1,361 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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14
Flights a week, 4-week average
3h 34m to 3h 53m
Scheduled flight time
1,361 mi
Nonstop distance
Free
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Washington to San Antonio flight schedule

Scheduled nonstop departures for IAD to SAT starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to San Antonio (SAT)
Date Flight Airline Departs IAD Arrives SAT Duration Aircraft
UA 1789United Airlines08:3011:043h 34mBoeing 737 MAX 9
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 1789United Airlines08:3011:043h 34mBoeing 737 MAX 9
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 3982United Airlines08:3011:163h 46mEmbraer E175
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 1789United Airlines08:2010:543h 34mBoeing 737-900
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 1789United Airlines08:2511:183h 53mBoeing 737 MAX 9
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 1789United Airlines08:2511:183h 53mBoeing 737 MAX 9
UA 1869United Airlines18:0020:383h 38mBoeing 737-700
UA 1789United Airlines08:2511:183h 53mBoeing 737 MAX 9
UA 1869United Airlines18:0020:383h 38mBoeing 737-700

Showing all 14 scheduled IAD to SAT departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAD to SAT date on the interactive map

Aircraft on the Washington to San Antonio nonstop

United Airlines flies the departures in the schedule table on this page with the Boeing 737-700, the Boeing 737 MAX 9, the Embraer E175, and the Boeing 737-900. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to SAT nonstop schedule

This page carries the full IAD to SAT nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAD to SAT nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAD to SAT on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to San Antonio nonstop

Carriers operating IAD to SAT nonstop in the current schedule.

See IAD to SAT on the interactive map →

Frequently asked questions about IAD to SAT

How long is the flight from Washington (IAD) to San Antonio (SAT)?
Scheduled flight times from Washington (IAD) to San Antonio (SAT) run from 3h 34m to 3h 53m across the departures in the schedule table on this page. The nonstop covers about 1,361 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to SAT?
United Airlines is currently the only airline flying IAD to SAT nonstop. 2LNR doesn't show award or upgrade space for it on IAD to SAT, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to SAT?
About 14 nonstop flights a week run between Washington (IAD) and San Antonio (SAT) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to SAT depart?
Scheduled IAD to SAT nonstops in the next 7 days with service leave between 08:20 and 18:00, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to SAT nonstop?
In the schedule table on this page, IAD to SAT nonstops fly as UA 1789, UA 1869, and UA 3982 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to SAT?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to SAT. The page carries the full IAD to SAT nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to SAT nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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