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Flight UA1849

United Airlines flight UA1849

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Looking for UA1849 in the air…

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

San Francisco (SFO) to Dulles (IAD)

Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 77 minutes. It was cancelled 1.7% of the time.

On-time arrivals
84.0%
Less than 15 minutes late
Cancelled
1.7%
Of scheduled flights
Average delay when late
77 min
Flights arriving 15+ minutes late
Flights tracked
344
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 67%
  • Air traffic control & airport 19%
  • Late-arriving aircraft 11%
  • Extreme weather 3%
  • Security 0%

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

Sioux Falls (FSD) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 37% of the time, and when it is late the delay averages 79 minutes. It was cancelled 4.8% of the time.

On-time arrivals
63.2%
Less than 15 minutes late
Cancelled
4.8%
Of scheduled flights
Average delay when late
79 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 81%
  • Air traffic control & airport 19%
  • Late-arriving aircraft 0%
  • Extreme weather 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 70.0% 30
October 2025 83.9% 31
November 2025 82.8% 30
December 2025 87.1% 31
January 2026 86.7% 31
February 2026 92.9% 28
March 2026 92.6% 31
April 2026 86.7% 30
May 2026 100.0% 31
June 2026 70.0% 30
July 2026 80.6% 31
August 2026 60.7% 31

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.