Your next trip, last seen at €113
Lowest observedWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €113, departing 19 Nov 2026 (Last checked: 22 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 28Check live prices for this route
- Airlines seen
- United Airlines, American Airlines, Delta Air Lines, Frontier Airlines
- Reported fastest flight
- 3h 53m
- Non-stop
- Yes
About this route
Explore the fares we observed from Washington to San Antonio. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,230 km
- Reported fastest flight
- 3h 53m
- Alternative airports
- DCA
Route-level information; individual journeys vary.
Published schedules report non-stop service with United Airlines. Check current timetables.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| United Airlines | 6 / 28 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Ronald Reagan Washington National Airport (DCA) → Washington, city gazetteer reference point (38.8951, -77.0364): ≈ 5 km.
- Washington Dulles International Airport (IAD) → Washington, city gazetteer reference point (38.8951, -77.0364): ≈ 37 km.
- San Antonio International Airport (SAT) → San Antonio, city gazetteer reference point (29.4241, -98.4936): ≈ 12 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
| Month | Lowest fare | Priced days |
|---|---|---|
| April 2027 | €174 | 11 |
| May 2027 | €174 | 16 |
Lowest fare by day of the week
Cheapest day of the week from Washington to San Antonio: Thursday, from €113 (checked 22 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €174 | 3 |
| Tuesday | €174 | 4 |
| Wednesday | €174 | 4 |
| Thursday | €113 | 5 |
| Friday | €174 | 4 |
| Saturday | €178 | 4 |
| Sunday | €174 | 4 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest one-way fare we saw per airline
Cheapest airline from Washington to San Antonio: United Airlines, from €184 (checked 22 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| United Airlines | €184Nov 19, 2026 | 6 |
| American Airlines | €199Apr 20, 2027 | 5 |
| Delta Air Lines | €208Apr 20, 2027 | 6 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Washington to San Antonio?
The lowest fare Routavio has observed is €113, found on 22 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Washington to San Antonio?
In our observations November 2026 is the cheapest month so far, at €113.
Are there direct flights from Washington to San Antonio?
Yes. Published schedules report non-stop flights on this route with United Airlines.
Which airlines fly from Washington to San Antonio?
Routavio has seen these carriers on the route: United Airlines, American Airlines, Delta Air Lines, Frontier Airlines.
Which airlines had non-stop offers on at least 3 departure dates from Washington to San Antonio?
For Washington to San Antonio, examples of observed one-way non-stop offers checked within the last 14 days: United Airlines (6). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Washington to San Antonio?
Cheapest day of the week from Washington to San Antonio: Thursday, from €113 (checked 22 Oct 2026).
Which airline has the lowest fare from Washington to San Antonio?
Cheapest airline from Washington to San Antonio: United Airlines, from €184 (checked 22 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
Keep exploring
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Recently observed fares. Prices may change.
Last checked: 22 Oct 2026