Dulles (IAD) to San Antonio (SAT)
Flight time
≈ 3h 31m
Bearing
248° W
Dulles (IAD) to San Antonio (SAT) is 1,360 miles (2,189 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–SAT
Filed traffic dataIn July 2026, United Airlines operated the most departures, one of 2 carriers flying nonstop IAD–SAT; the Boeing 737-700 was the most common aircraft at 44% of departures; flights ran 85% full.
Departures
123
July 2026
Seats
18,018
both directions
Passengers
15,384
both directions
Load factor
85.4%
RPM ÷ ASM
Who flies IAD–SAT?
United Airlines operated the most nonstop IAD–SAT departures in July 2026 (116), one of 2 carriers on the route.
- UA
116 departures · 17,486 seats
Share of departures94.3%85.3%
Load
- YV
7 departures · 532 seats
Share of departures5.7%88.2%
Load
What plane flies IAD–SAT?
In July 2026, the Boeing 737-700 flew 44% of IAD–SAT departures — more than any other aircraft type.
- Boeing 737-700
54 departures · 87.8% load
43.9% - Boeing 737 MAX 8
32 departures · 86.2% load
26.0% - Boeing 737-900ER
16 departures · 84.0% load
13.0% - Boeing 737 MAX 9
14 departures · 77.9% load
11.4% - Embraer E175
7 departures · 88.2% load
5.7%
How has IAD–SAT traffic changed?
Nonstop IAD–SAT departures rose from 108 in August 2025 to 123 in July 2026.
Monthly nonstop IAD–SAT traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
108 departures · 12,567 passengers
76.8%
Load
September 2025
103 departures · 13,055 passengers
80.1%
Load
October 2025
110 departures · 14,022 passengers
79.7%
Load
November 2025
120 departures · 15,701 passengers
74.5%
Load
December 2025
126 departures · 16,609 passengers
83.2%
Load
January 2026
101 departures · 11,902 passengers
78.2%
Load
February 2026
103 departures · 11,884 passengers
75.3%
Load
March 2026
124 departures · 15,920 passengers
88.2%
Load
April 2026
117 departures · 14,350 passengers
88.7%
Load
May 2026
109 departures · 14,918 passengers
87.6%
Load
June 2026
120 departures · 15,877 passengers
89.9%
Load
July 2026
123 departures · 15,384 passengers
85.4%
Load
By direction
Each direction is filed separately — they rarely match.
IAD → SAT
87.5% full
62 departures · 7,915 passengers
SAT → IAD
83.3% full
61 departures · 7,469 passengers
Nonstop IAD–SAT traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Dulles (IAD) from San Antonio (SAT)?
IAD to SAT is 1,360 miles (2,189 km / 1,182 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to SAT?
A nonstop covers the 1,360-mile great-circle distance in roughly 3h 31m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–SAT?
In July 2026, the Boeing 737-700 flew the largest share of departures (43.9%), followed by the Boeing 737 MAX 8 (26.0%).
What mileage do I earn flying IAD–SAT?
Distance-based programs credit off the 1,360-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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