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Flight Reliability

DL 5770 · Delta Air Lines

New York → Washington (LGA–DCA)96% of its flights flew this route. The rest (CLE–JFK, BOS–ORD) are included in these numbers.

81
Pretty Reliable
WanderNerd Reliability Score
90%
Arrive within 15 minutes
2 min early
Average arrival delay
3.9%
Cancelled
12 min early
Median arrival delay

Based on 282 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

DL 5770 arrived on time 93% of the time on Mondays. On Fridays: 86%.

Well ahead of the LGA–DCA route.

DL 5770 arrived on time 90% of the time, versus 69% across the LGA–DCA route.

Better than the Delta Air Lines network average.

DL 5770 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

Keep a backup plan handy.

DL 5770 was cancelled 3.9% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon93%(45 flights)
  • Tue92%(47 flights)
  • Wed90%(50 flights)
  • Thu90%(48 flights)
  • Fri86%(49 flights)
  • Sat90%(29 flights)
  • Sun—(2 flights)
On-time by departure window
  • 6–9 AM91%(262 flights)
  • 6–9 PM—(8 flights)
On-time trend by month
89%
May

Jun 96% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%23
July 202596%24
August 202591%22
September 202591%22
October 202591%23
November 202595%19
December 202593%15
January 202691%23
February 202682%22
March 202675%24
April 202692%26
May 202689%27
Departures on time
93%
Diverted
0.4%
Flights flown
270
Months covered
12

Same route, other flights

Keep nerding

Based on 282 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.