San Antonio International Airport
San Antonio, United StatesSAT / KSAT
Major airport · 68 direct destinations · 3 runways · longest runway 8,504 ft
70 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Route
San Antonio → Dulles
SAT
San AntonioSan Antonio International Airport
San AntonioSan Antonio International AirportIADDullesWashington Dulles International Airport
DullesWashington Dulles International Airport- Distance
- 1,360 mi
- Estimated flight time
- ~3h 15m
Dulles is currently 1 hour ahead of San Antonio.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 2 flights a day, observed from October 2025 to September 2026.
- 2
- flights per day
- 2
- busiest month · Oct
- 2 hr 52 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 2Jan2026
- 2Feb
- 2Mar
- 2Apr
- 2May
- 2Jun
- 2Jul
- 2Aug
- 2Sep
- 2Oct2025
- 2Nov
- 2Dec
Airlines
Who flies it
United Airlinesall year
Mesa Airlinesall year
Through the day
Departure times
Local time in San Antonio. Most departures between 11:00 and 14:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 2.1Mon
- 1.8Tue
- 1.9Wed
- 2.1Thu
- 2.2Fri
- 2Sat
- 2.1Sun
Fleet
Aircraft observed
- Boeing 737-700B73727%
- Boeing 737-900B73920%
- Boeing 737 MAX 9B39M19%
- Boeing 737 MAX 8B38M11%
- Embraer 175E75L5%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 2 | 52 |
|
| February 2026 | 2 | 58 |
|
| March 2026 | 2 | 65 |
|
| April 2026 | 2 | 59 |
|
| May 2026 | 2 | 54 |
|
| June 2026 | 2 | 70 |
|
| July 2026 | 2 | 65 |
|
| August 2026 | 2 | 56 |
|
| September 2026 | 2 | 51 |
|
| October 2025 | 2 | 58 |
|
| November 2025 | 2 | 73 |
|
| December 2025 | 2 | 61 |
|
Airlines observed on this route
From observed callsign routes on SAT-IAD - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Antonio: 68.
- Direct destinations observed from Dulles: 171.
The airports on this route
Washington Dulles International Airport
Dulles, United StatesIAD / KIAD
International hub · 171 direct destinations · 4 runways · longest runway 11,499 ft
81 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
SAT DCARonald Reagan Washington National AirportWashington is about 24 mi from Dulles.View route →SAT BWIBaltimore/Washington International Thurgood Marshall AirportBaltimore is about 45 mi from Dulles.View route →AUS IADAustin Bergstrom International AirportAustin is about 66 mi from San Antonio.View route →
About the route from San Antonio to Dulles
The observed direct connection between San Antonio International Airport (SAT) and Washington Dulles International Airport (IAD) covers approximately 1,360 mi. The estimated flight time is around 3h 15m. Mesa Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is San Antonio from Dulles by air?
- The great-circle distance between San Antonio International Airport and Washington Dulles International Airport is approximately 1,360 mi.
- How long is the flight from San Antonio to Dulles?
- Based on the distance, the estimated flight time is about 3h 15m. This is an estimate, not a schedule.
- Is there a direct connection from San Antonio to Dulles?
- Yes, a direct connection between SAT and IAD has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Mesa Airlines and United Airlines.
- How often is there a flight from San Antonio to Dulles?
- On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 722 observed flights. Mainly United Airlines, Mesa Airlines. That is an observation, not a timetable.
- What is the current time difference between San Antonio and Dulles?
- Dulles is currently 1 hour ahead of San Antonio.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.