UA 1799 (ORD→IAH, IAH→LAS, LAS→SFO) arrived on time 69.8% of the time in June–August 2026. When it was late, the average delay was 1h 7m. 0.4% of flights were cancelled. Right now the FAA reports no delays at ORD, IAH, LAS, SFO.
Done for today No more scheduled legs today.
Estimate from the schedule, live position and FAA airport status, if this flight is operating today. Check the airline for official times.
Not in the air right now, or not broadcasting its position.
Live position from adsb.lol community receivers (open data, ODbL). The same flight number can fly several legs a day; this shows the one flying now.
Route and schedule
| Leg | Scheduled | Flights |
|---|---|---|
| ORD → IAH Chicago, IL to Houston, TX | 6:29 AM → 9:18 AM | 71 |
| IAH → LAS Houston, TX to Las Vegas, NV | 10:55 AM → 12:14 PM | 92 |
| LAS → SFO Las Vegas, NV to San Francisco, CA | 1:34 PM → 3:16 PM | 92 |
Local times. Schedules change; check your booking.
How reliable is UA 1799?
| Arrived on time (within 15 min) | 69.8% |
| Average delay when late | 67 min |
| Cancelled | 0.4% |
| Diverted | 0% |
| Flights tracked | 276 |
Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by United to the Department of Transportation.
Other flights LAS → SFO
All flights on this route, ranked
Live status at its airports
We show airport-wide FAA status, not this flight's gate or live position. For that, check the United app.
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About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June–August 2026. Live conditions: FAA NAS Status. "On time" means arriving within 15 minutes of schedule.
Live FAA delays
FAA feed updated Sat Nov 14 23:48:09 2026 GMT.
Airport closures and notices (3)
What's your situation?
Popular airports
Official sources
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Your rights
Do I get a refund?
Under U.S. DOT rules, if your airline cancels your flight or changes it significantly (3+ hours domestic, 6+ international) and you turn down the alternative, you're owed a cash refund to your original payment method. You don't have to accept a voucher.
Will they pay for my hotel or meals?
No federal law requires it. Many airlines commit to meals or hotels for delays they control. Weather and FAA air traffic holds usually don't count. Check the DOT dashboard for your airline.
Should I rebook now?
If your flight is cancelled, rebook in the app while you wait in line or on hold. Seats go fast. If it's only delayed, wait for an update before giving up your seat.
Why is there a ground stop?
Common reasons are weather (wind, thunderstorms, low visibility), equipment outages, staffing shortages and runway problems. The FAA status feed lists the reason for each active stop or delay program.
How long do ground stops last?
Most last 30 minutes to a few hours. The FAA often posts an expected end time and can extend or lift it early.
Do I get compensation for a delayed flight?
In the U.S., airlines don't owe cash compensation for delays, though many offer meals or hotels for delays they cause. In Canada, the Air Passenger Protection Regulations can require compensation for delays within the airline's control. In the EU and UK, EC 261 can apply.
What if I miss my connection?
If both flights are on one ticket, the airline must rebook you at no cost. Ask for the next available flight, including partner airlines.
Copy-paste scripts
Hi, my flight [FLIGHT #] on [DATE] was cancelled. I'd like to be rebooked on the next available flight to [CITY], including partner airlines. If none works, I'm requesting a full cash refund under DOT rules.
Hi, my flight [FLIGHT #] on [DATE] was cancelled and I'm not accepting the rebooking offered. Under the DOT refund rule I'm requesting a full refund to my original form of payment, not a voucher or credit. Booking code: [CODE].
Hi, my flight [FLIGHT #] was cancelled and I'm stuck overnight in [CITY]. Does your customer service plan cover a hotel or meal voucher for this disruption? Thanks for your help.
Get an alert
This page links to official sources and doesn't track individual flights. Always confirm with your airline.