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Flight DL631

Delta Air Lines flight DL631

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  • Advisory Coastal Flood Advisory OAK, SFO, SQL, STS

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Chicago (ORD) to Minneapolis (MSP)

Historically, this flight arrives 15+ minutes late 40% of the time, and when it is late the delay averages 65 minutes. It was cancelled 3.7% of the time.

On-time arrivals
59.6%
Less than 15 minutes late
Cancelled
3.7%
Of scheduled flights
Average delay when late
65 min
Flights arriving 15+ minutes late
Flights tracked
108
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 72%
  • Air traffic control & airport 20%
  • Airline (crew, maintenance, cleaning) 8%
  • Extreme weather 1%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Washington (DCA) to Minneapolis (MSP)

Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 103 minutes. It was cancelled 3.4% of the time.

On-time arrivals
70.2%
Less than 15 minutes late
Cancelled
3.4%
Of scheduled flights
Average delay when late
103 min
Flights arriving 15+ minutes late
Flights tracked
59
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 84%
  • Air traffic control & airport 8%
  • Airline (crew, maintenance, cleaning) 8%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Atlanta (ATL) to Chattanooga (CHA)

Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 119 minutes. It was cancelled 0.0% of the time.

On-time arrivals
91.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
119 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 96%
  • Airline (crew, maintenance, cleaning) 4%
  • Air traffic control & airport 0%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Chattanooga (CHA) to Atlanta (ATL)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 95 minutes. It was cancelled 0.0% of the time.

On-time arrivals
88.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
95 min
Flights arriving 15+ minutes late
Flights tracked
36
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 88%
  • Airline (crew, maintenance, cleaning) 10%
  • Air traffic control & airport 2%
  • Extreme weather 0%
  • Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Greenville/Greer/Spartanburg (GSP) to Detroit (DTW)

Only 16 flights on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
6.2%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

San Francisco (SFO) to Minneapolis (MSP)

Only 1 flight on record, which is too few for reliable odds.

On-time arrivals
100.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
—
Flights arriving 15+ minutes late
Flights tracked
1
Scheduled flights in the period

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On-time arrivals by month
Sep 2025 Jul 2026
Show as table
MonthOn timeFlights
September 2025 55.2% 30
October 2025 67.7% 31
November 2025 64.3% 28
December 2025 66.7% 31
January 2026 75.0% 29
February 2026 69.2% 27
March 2026 83.6% 55
April 2026 100.0% 24
July 2026 100.0% 1

Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data

Latest airport & airline headlines

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Headlines found by Google News; stories open on the publisher's site.