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Flight UA1677

United Airlines flight UA1677

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Looking for UA1677 in the air…

Chicago (ORD) to Boston (BOS)

Historically, this flight arrives 15+ minutes late 54% of the time, and when it is late the delay averages 102 minutes. It was cancelled 4.1% of the time.

On-time arrivals
45.7%
Less than 15 minutes late
Cancelled
4.1%
Of scheduled flights
Average delay when late
102 min
Flights arriving 15+ minutes late
Flights tracked
98
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 47%
  • Air traffic control & airport 34%
  • Airline (crew, maintenance, cleaning) 16%
  • Extreme weather 2%
  • Security 0%

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

Chicago (ORD) to Portland (PDX)

Historically, this flight arrives 15+ minutes late 42% of the time, and when it is late the delay averages 95 minutes. It was cancelled 2.4% of the time.

On-time arrivals
58.2%
Less than 15 minutes late
Cancelled
2.4%
Of scheduled flights
Average delay when late
95 min
Flights arriving 15+ minutes late
Flights tracked
82
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 61%
  • Airline (crew, maintenance, cleaning) 22%
  • Air traffic control & airport 15%
  • Extreme weather 2%
  • Security 0%

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

New Orleans (MSY) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 20% of the time, and when it is late the delay averages 98 minutes. It was cancelled 0.0% of the time.

On-time arrivals
79.5%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
98 min
Flights arriving 15+ minutes late
Flights tracked
45
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 67%
  • Late-arriving aircraft 21%
  • Extreme weather 12%
  • Airline (crew, maintenance, cleaning) 0%
  • Security 0%

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

Denver (DEN) to Minneapolis (MSP)

Historically, this flight arrives 15+ minutes late 26% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.0% of the time.

On-time arrivals
74.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
48 min
Flights arriving 15+ minutes late
Flights tracked
31
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 66%
  • Air traffic control & airport 25%
  • Airline (crew, maintenance, cleaning) 9%
  • Extreme weather 0%
  • Security 0%

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

Dallas-Fort Worth (DFW) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 103 minutes. It was cancelled 8.3% of the time.

On-time arrivals
90.9%
Less than 15 minutes late
Cancelled
8.3%
Of scheduled flights
Average delay when late
103 min
Flights arriving 15+ minutes late
Flights tracked
24
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 51%
  • Airline (crew, maintenance, cleaning) 34%
  • Late-arriving aircraft 14%
  • Extreme weather 0%
  • Security 0%

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

Newark (EWR) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 116 minutes. It was cancelled 0.0% of the time.

On-time arrivals
81.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
116 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Extreme weather 69%
  • Air traffic control & airport 20%
  • Late-arriving aircraft 6%
  • Airline (crew, maintenance, cleaning) 5%
  • Security 0%

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

Boston (BOS) to Newark (EWR)

Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 49 minutes. It was cancelled 5.0% of the time.

On-time arrivals
52.6%
Less than 15 minutes late
Cancelled
5.0%
Of scheduled flights
Average delay when late
49 min
Flights arriving 15+ minutes late
Flights tracked
20
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 87%
  • Airline (crew, maintenance, cleaning) 7%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

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

Fort Myers (RSW) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 42% of the time, and when it is late the delay averages 89 minutes. It was cancelled 0.0% of the time.

On-time arrivals
57.9%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
89 min
Flights arriving 15+ minutes late
Flights tracked
20
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 68%
  • Late-arriving aircraft 21%
  • Extreme weather 11%
  • Airline (crew, maintenance, cleaning) 0%
  • Security 0%

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

In the news

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 28.3% 47
October 2025 73.3% 30
November 2025 59.1% 23
December 2025 70.6% 17
January 2026 53.8% 14
February 2026 57.1% 16
March 2026 75.0% 29
April 2026 60.0% 21
May 2026 76.7% 31
June 2026 85.7% 30
July 2026 50.0% 31
August 2026 68.6% 52

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.