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Delta Air Lines on-time record

Delta Air Lines (DL) flew 1,038,644 US domestic flights from August 2025 to July 2026. 81.5% arrived within 15 minutes of schedule, 3.9 points above the US average of 77.6%; 1.7% were cancelled, and flights arrived about 4 minutes late on average. That ranks Delta Air Lines first of 12 US airlines with a full year of figures.

81.5%
on time (within 15 min)
1.7%
cancelled
11.8%
more than 30 min late
+4 min
average arrival vs schedule

1,038,644 flights, 2,821 flight numbers, 1,190 routes and 153 airports, August 2025 to July 2026. Source: US Bureau of Transportation Statistics, public domain.

Delta Air Lines on-time record by month

MonthOn timeCancelledFlights
July 202674.1%2.4%94,140
June 202682.3%1.1%90,247
May 202682.2%1.2%91,955
April 202685%0.8%87,115
March 202679.9%3.6%86,890
February 202683.3%2.1%74,200
January 202680.3%3.9%79,198
December 202574.5%2.8%85,139
November 202582.4%1.7%84,475
October 202584%0.4%90,097
September 202587.6%0.1%84,875
August 202583%0.8%90,313

Each month links to that month's US punctuality report, with every airline ranked.

Where Delta Air Lines flies from most

  1. Atlanta (ATL)79.9%
  2. Minneapolis (MSP)79.7%
  3. Detroit (DTW)78%
  4. Salt Lake City (SLC)83.8%
  5. Los Angeles (LAX)81.4%
  6. Seattle Tacoma (SEA)81.1%
  7. New York (JFK)77.9%
  8. New York (LGA)75%
  9. Boston (BOS)76.9%
  10. Orlando (MCO)78%

Delta Air Lines' busiest routes

  1. Atlanta to Orlando70.8%
  2. Orlando to Atlanta78.8%
  3. Atlanta to New York76.7%
  4. New York to Atlanta80%
  5. Tampa to Atlanta81.7%
  6. Atlanta to Tampa75.2%
  7. Atlanta to Fort Lauderdale74%
  8. Fort Lauderdale to Atlanta78.9%
  9. Atlanta to Los Angeles79.3%
  10. Washington to Atlanta80.7%

Most punctual busy routes

  1. Kahului to Seattle95.3%
  2. Pasco to Salt Lake City94.8%
  3. Billings to Salt Lake City94%
  4. Spokane to Seattle93.8%
  5. San Jose to Salt Lake City93%
  6. Sacramento to Atlanta92.8%
  7. San Jose to Atlanta92.7%
  8. Sacramento to Minneapolis92.5%

Least punctual busy routes

  1. San Antonio to Boston60.5%
  2. Miami to Seattle62.3%
  3. Los Angeles to San Francisco62.9%
  4. Seattle to San Francisco62.9%
  5. Santa Ana to Detroit62.9%
  6. San Francisco to Austin63.1%
  7. Salt Lake City to San Francisco64%
  8. New Orleans to Boston64.6%

Most punctual flights

  1. DL127097.8%
  2. DL88697.2%
  3. DL236997.2%
  4. DL137697.2%
  5. DL305597.1%
  6. DL153597%
  7. DL152696.4%
  8. DL134496.4%

Least punctual flights

  1. DL226750.5%
  2. DL287953.2%
  3. DL130653.4%
  4. DL182454.6%
  5. DL249854.6%
  6. DL72755.2%
  7. DL289655.4%
  8. DL174255.4%

On-time shares are for August 2025 to July 2026. Routes with at least 300 flights and flight numbers with at least 200 flights in the period.

Questions and answers

Is Delta Air Lines usually on time?
81.5% of Delta Air Lines' 1,038,644 US domestic flights from August 2025 to July 2026 arrived within 15 minutes of schedule, 3.9 points above the US average of 77.6%. That ranks it first of 12 US airlines with a full year of figures. Its flights arrived about 4 minutes late on average.
How often does Delta Air Lines cancel flights?
1.7% of Delta Air Lines' scheduled flights were cancelled from August 2025 to July 2026. That is the fifth lowest cancellation rate of 12 US airlines with a full year of figures.
When is Delta Air Lines most and least punctual?
In the period, Delta Air Lines' best month was September 2025 (87.6% on time) and its worst was July 2026 (74.1%).
What is Delta Air Lines' most punctual busy route?
Kahului to Seattle: 95.3% of 365 flights on time from August 2025 to July 2026, among Delta Air Lines routes with at least 300 flights.
Where does Delta Air Lines fly from most?
By departures from August 2025 to July 2026: Atlanta (ATL), 240,720; Minneapolis (MSP), 64,787; Detroit (DTW), 60,323.

Compare Delta Air Lines with every other US airline in the US airline on-time league table, or read how TripStow measures punctuality.

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