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Route on-time record

DCA to SAT: most on-time flights and the best time to fly

Washington (Ronald Reagan Washington National Airport) to San Antonio (San Antonio International Airport). 351 nonstop flights in Jun 2025 to May 2026, 55% arrived within 15 minutes and 2.0% were cancelled. The most reliable flight number was American 1947 at 5:30 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

Find me the most reliable flights fromtoonreturning(optional)

DCA → SAT

Washington to San Antonio: 351 nonstop flights a year

On time (12 months)

55%

Cancelled

2.0%

avg delay 42 min

Best time to leave

No clear winner

Most reliable airline

American

53% chance on time

Check DCA to SAT fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · American 1947

    5:30 PM → 8:05 PM3h 43m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    53%

    chance on time

    On time (history)
    55%
    Cancelled
    2.0%
    Avg arrival delay
    42 min
    • Arrived on time 55% of the time (343 flights, Jun 2025 to May 2026).
    • Departs inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
    • 59% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 343 flights

    Find American 1947 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • American Airlines53%

    351 flights · 55% on time as flown · 2.0% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • 3 to 6 PM54%

    126 flights · avg delay 36 min

  • 6 to 9 PM55%

    213 flights · avg delay 46 min

Best day: Saturday (65%). Worst: Sunday (40%).

Smarter routing

Nearby airports that run more on time

  • IAD → SAT 84% chance on time

    Washington Dulles International Airport to San Antonio International Airport · 636 flights a year · 23 mi from your airports · yours: 53%

    Rank flightsFares

  • BWI → SAT 76% chance on time

    Baltimore/Washington International Thurgood Marshall Airport to San Antonio International Airport · 748 flights a year · 30 mi from your airports · yours: 53%

    Rank flightsFares

Or connect through a calmer hub

  • via IAH (George Bush Intercontinental Airport)

    65% both legs on time
    • DCA to IAH on time 81%, IAH to SAT on time 83%.
    • IAH had 92 ground stops and delay programs in 12 months.
    Rank DCA-IAH flightsRank IAH-SAT flights

  • via HOU (William P. Hobby Airport)

    61% both legs on time
    • DCA to HOU on time 78%, HOU to SAT on time 79%.
    • HOU had 40 ground stops and delay programs in 12 months.
    Rank DCA-HOU flightsRank HOU-SAT flights

  • via ATL (Hartsfield Jackson Atlanta International Airport)

    59% both legs on time
    • DCA to ATL on time 78%, ATL to SAT on time 79%.
    • ATL had 96 ground stops and delay programs in 12 months.
    Rank DCA-ATL flightsRank ATL-SAT flights

  • via BNA (Nashville International Airport)

    59% both legs on time
    • DCA to BNA on time 77%, BNA to SAT on time 80%.
    • BNA had 44 ground stops and delay programs in 12 months.
    Rank DCA-BNA flightsRank BNA-SAT flights

Book connections on one ticket and allow at least an hour at the hub. Leg odds are combined as independent, a rough guide.

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
-
F
-
M
57
A
57
M
44
J
40
J
-
A
30
S
-
O
77
N
73
D
-

What delays this route

  • Late-arriving aircraft60%
  • Airline (crew, maintenance, boarding)23%
  • Air traffic control and airport volume14%
  • Severe weather3%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from DCA to SAT…

DCA to SAT questions

Which airline is most on time from DCA to SAT?
American, with a season-adjusted 53% chance of operating and arriving on time over 351 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on DCA to SAT?
August (30% on time); the best was October (77%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from DCA

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Live status: FAA delays and ground stops