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Route Reliability

Washington → Savannah

IAD–SAV · 516 miles · Washington Dulles International Airport to Savannah/Hilton Head International Airport

86
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
7 min
Average arrival delay
1.0%
Cancelled
1,179
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines84% on time · 1,124 flights
  • Allegiant Air80% on time · 55 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

IAD–SAV flights departing between 6–9 AM arrived on time 93% of the time, versus 78% between 3–6 PM.

Friday is doing you no favors.

IAD–SAV flights arrived on time 88% of the time on Wednesdays. On Fridays: 80%.

Ticking up lately.

IAD–SAV flights arrived on time 88% of the time over the last three months in the data, compared with 82% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon86%(165 flights)
  • Tue82%(152 flights)
  • Wed88%(147 flights)
  • Thu83%(186 flights)
  • Fri80%(166 flights)
  • Sat87%(157 flights)
  • Sun83%(189 flights)
On-time by departure window
  • 6–9 AM93%(221 flights)
  • 9 AM–12 PM81%(108 flights)
  • 12–3 PM85%(362 flights)
  • 3–6 PM78%(404 flights)
  • 6–9 PM87%(15 flights)
  • 9 PM–12 AM89%(52 flights)
On-time trend by month
87%
May

Jun 76% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%98
July 202571%126
August 202586%98
September 202595%81
October 202588%101
November 202588%95
December 202577%95
January 202678%78
February 202690%77
March 202688%89
April 202689%118
May 202687%106

Same trip, other airports

Keep nerding

Based on 1,179 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.