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Flight UA1835

United Airlines flight UA1835

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Looking for UA1835 in the air…

  • Watch Ground Delay Program SAN

    Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes

    Reason: airport volume

    Airport status

    Read the story →
  • Advisory Coastal Flood Advisory CLD, SAN, SNA

    COASTAL FLOOD ADVISORY IN EFFECT FROM 4 AM FRIDAY TO NOON PST TUESDAY

    Weather

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

    COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST MONDAY

    Weather

Denver (DEN) to San Diego (SAN)

Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 59 minutes. It was cancelled 0.4% of the time.

On-time arrivals
67.1%
Less than 15 minutes late
Cancelled
0.4%
Of scheduled flights
Average delay when late
59 min
Flights arriving 15+ minutes late
Flights tracked
233
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 35%
  • Airline (crew, maintenance, cleaning) 33%
  • Air traffic control & airport 31%
  • Extreme weather 1%
  • Security 0%

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

Kalispell (FCA) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 102 minutes. It was cancelled 3.0% of the time.

On-time arrivals
75.0%
Less than 15 minutes late
Cancelled
3.0%
Of scheduled flights
Average delay when late
102 min
Flights arriving 15+ minutes late
Flights tracked
66
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 52%
  • Late-arriving aircraft 46%
  • Airline (crew, maintenance, cleaning) 2%
  • Extreme weather 0%
  • Security 0%

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

New York (LGA) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 31% of the time, and when it is late the delay averages 178 minutes. It was cancelled 0.0% of the time.

On-time arrivals
69.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
178 min
Flights arriving 15+ minutes late
Flights tracked
42
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 50%
  • Extreme weather 32%
  • Air traffic control & airport 15%
  • Late-arriving aircraft 3%
  • Security 0%

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

Dallas-Fort Worth (DFW) to Denver (DEN)

Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 68 minutes. It was cancelled 0.0% of the time.

On-time arrivals
80.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
68 min
Flights arriving 15+ minutes late
Flights tracked
26
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 65%
  • Late-arriving aircraft 17%
  • Extreme weather 16%
  • Airline (crew, maintenance, cleaning) 2%
  • Security 0%

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

San Diego (SAN) to San Francisco (SFO)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 46 minutes. It was cancelled 0.0% of the time.

On-time arrivals
76.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
46 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 48%
  • Late-arriving aircraft 46%
  • Airline (crew, maintenance, cleaning) 6%
  • Extreme weather 0%
  • Security 0%

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

San Francisco (SFO) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 81% of the time, and when it is late the delay averages 64 minutes. It was cancelled 0.0% of the time.

On-time arrivals
19.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
64 min
Flights arriving 15+ minutes late
Flights tracked
21
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 50%
  • Airline (crew, maintenance, cleaning) 26%
  • Late-arriving aircraft 24%
  • Extreme weather 0%
  • Security 0%

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

Palm Springs (PSP) to Denver (DEN)

Only 19 flights on record, which is too few for reliable odds.

On-time arrivals
70.6%
Less than 15 minutes late
Cancelled
10.5%
Of scheduled flights
Average delay when late
109 min
Flights arriving 15+ minutes late
Flights tracked
19
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 91%
  • Airline (crew, maintenance, cleaning) 5%
  • Air traffic control & airport 4%
  • Extreme weather 0%
  • Security 0%

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

Seattle (SEA) to Denver (DEN)

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

On-time arrivals
93.3%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
42 min
Flights arriving 15+ minutes late
Flights tracked
16
Scheduled flights in the period

What caused the delays

  • Air traffic control & airport 100%
  • Airline (crew, maintenance, cleaning) 0%
  • 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 60.9% 47
October 2025 76.7% 43
November 2025 81.8% 22
December 2025 76.5% 54
January 2026 66.7% 25
February 2026 94.1% 17
March 2026 58.8% 17
April 2026 94.7% 19
May 2026 77.6% 49
June 2026 68.6% 51
July 2026 46.2% 41
August 2026 50.8% 59

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.