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Delta Air Lines: On-Time Performance & Delay Statistics

Data through May 2026

Delta Air Lines performs about in line with the industry: 81% of flights on time against a national 78%, 1.4% cancelled, and an average delay of 15 minutes when late. That puts it near the top — #3 of 15 US reporting carriers.

On-time
81%
arrived <15 min late
Avg delay
15 min
Cancelled
1.4%
Diverted
0.2%
Flights/12mo
1,039,445
Routes
1,288
Airports
155

Monthly on-time trend

Monthly on-time percentage for Delta Air Lines50%75%100%June 2024: 80% on-time (89,065 flights)80Jun 2024July 2024: 70% on-time (92,296 flights)70August 2024: 81% on-time (90,397 flights)81September 2024: 87% on-time (84,545 flights)87Sep 2024October 2024: 90% on-time (88,300 flights)90November 2024: 89% on-time (81,825 flights)89December 2024: 80% on-time (83,283 flights)80Dec 2024January 2025: 81% on-time (76,306 flights)81February 2025: 80% on-time (71,333 flights)80March 2025: 81% on-time (84,487 flights)81Mar 2025April 2025: 82% on-time (84,188 flights)82May 2025: 78% on-time (89,931 flights)78June 2025: 74% on-time (91,122 flights)74Jun 2025July 2025: 75% on-time (94,066 flights)75August 2025: 83% on-time (90,313 flights)83September 2025: 88% on-time (84,875 flights)88Sep 2025October 2025: 84% on-time (90,097 flights)84November 2025: 82% on-time (84,475 flights)82December 2025: 74% on-time (85,139 flights)74Dec 2025January 2026: 80% on-time (79,198 flights)80February 2026: 83% on-time (74,200 flights)83March 2026: 80% on-time (86,890 flights)80Mar 2026April 2026: 85% on-time (87,115 flights)85May 2026: 82% on-time (91,955 flights)82June 2024: 0.2% cancelledJuly 2024: 6.6% cancelledAugust 2024: 0.8% cancelledSeptember 2024: 0.4% cancelledOctober 2024: 0.9% cancelledNovember 2024: 0.0% cancelledDecember 2024: 0.1% cancelledJanuary 2025: 2.8% cancelledFebruary 2025: 0.2% cancelledMarch 2025: 0.5% cancelledApril 2025: 0.5% cancelledMay 2025: 0.2% cancelledJune 2025: 1.7% cancelledJuly 2025: 1.4% cancelledAugust 2025: 0.8% cancelledSeptember 2025: 0.1% cancelledOctober 2025: 0.4% cancelledNovember 2025: 1.7% cancelledDecember 2025: 2.7% cancelledJanuary 2026: 3.9% cancelledFebruary 2026: 2.1% cancelledMarch 2026: 3.6% cancelledApril 2026: 0.8% cancelledMay 2026: 1.2% cancelled— cancelled % (0-8% scale)

Delta Air Lines’s most reliable routes

  1. SMFLAX96%
  2. PHXLAX96%
  3. ABQMSP95%
  4. OGGSEA94%
  5. PSCSLC94%
  6. OAKSLC94%

Its most delay-prone routes

  1. ANCATL42%
  2. SFOAUS61%
  3. ATLANC61%
  4. AVLMSP62%
  5. LAXSMF62%
  6. MIASEA63%

Best airports for Delta Air Lines

  1. PSCPasco/Kennewick/Richland94%
  2. BILBillings93%
  3. JNUJuneau93%
  4. OAJJacksonville/Camp Lejeune92%
  5. SJCSan Jose91%
  6. FARFargo91%

Worst airports for Delta Air Lines

  1. STXChristiansted60%
  2. HDNHayden67%
  3. EGEEagle70%
  4. FATFresno73%
  5. MIAMiami73%
  6. FLLFort Lauderdale75%

Where Delta Air Lines flies most

RouteFlightsOn-timeAvg delay
ATLMCO10,90469%21 min
MCOATL10,90276%21 min
ATLLGA9,62177%16 min
LGAATL9,61680%16 min
ATLTPA8,75473%18 min
TPAATL8,75479%17 min
ATLFLL8,42972%18 min
FLLATL8,42677%19 min
ATLLAX7,85478%14 min
LAXATL7,84480%14 min
ATLDCA7,63668%20 min
DCAATL7,63680%18 min
JAXATL7,63184%13 min
ATLJAX7,63175%16 min
PBIATL7,47283%12 min
ATLPBI7,47274%16 min
ATLRDU7,35182%12 min
RDUATL7,35087%11 min
DTWATL7,34182%13 min
ATLDTW7,33679%14 min
ATLBOS7,27676%15 min
BOSATL7,27081%14 min
LASATL6,80685%13 min
ATLLAS6,80377%14 min
JFKLAX6,80079%17 min
LAXJFK6,79980%17 min
MSYATL6,53785%11 min
ATLMSY6,53479%14 min
MIAATL6,51475%24 min
ATLMIA6,51071%20 min
ATLBNA6,47081%12 min
BNAATL6,46787%10 min
ATLMSP6,33881%12 min
MSPATL6,32584%12 min
MEMATL6,28387%12 min
ATLMEM6,28182%12 min
ATLAUS6,24577%14 min
AUSATL6,24384%12 min
BHMATL6,18888%11 min
ATLBHM6,18782%12 min
ATLCHS6,13282%11 min
CHSATL6,13188%10 min
ATLEWR6,10066%26 min
EWRATL6,10074%24 min
PHLATL5,95283%14 min
ATLPHL5,94774%16 min
SLCATL5,90185%11 min
ATLSLC5,89583%12 min
SAVATL5,85886%11 min
ATLSAV5,85881%12 min

Frequently asked questions

Is Delta Air Lines usually on time?
Delta Air Lines arrived on time (within 15 minutes of schedule) on 81% of flights between 2024-06 and 2026-05, ranking 3 of 15 US airlines by on-time percentage. The national average over the same period was 78%.
How often does Delta Air Lines cancel flights?
1.4% of Delta Air Lines flights were cancelled in this period, at or below the national rate of 1.6%.
Which routes is Delta Air Lines most reliable on?
Delta Air Lines&rsquo;s best on-time record is on SMF–LAX, at 96% based on 150 flights in this period.
Which airports does Delta Air Lines perform best and worst at?
Delta Air Lines is most reliable out of Pasco/Kennewick/Richland (PSC) at 94% on-time, and weakest out of Christiansted (STX) at 60%.

Airport hubs where this airline operates

Related guides

Based on 2,055,401 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.