| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 19 | SFO | SAT | 12:20 | 17:56 |
Delayed
|
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| Sep 16 | SFO | SAT | 12:53 | 17:57 |
Landed
|
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| Sep 12 | SFO | SAT | 12:42 | 17:47 |
Landed
|
Track > |
| Sep 09 | SFO | SAT | 13:12 | 18:22 |
Landed Late
|
Track > |
United Airlines Flight UA639 connects San Francisco, United States to San Antonio, United States, taking off from San Francisco International Airport SFO and landing at San Antonio International Airport SAT.
How long is the UA639 flight from San Francisco to San Antonio?
The average flight time from San Francisco to San Antonio is 3 hours and 6 minutes. The flight distance is 2381 km / 1480 miles and the average flight speed is 741 km/h / 460 mph.
How many UA639 flights are operated per week?
2 flights per week. The flight UA639 is operated on Wednesday and Saturday.
What is the On-Time Performance (OTP) of United Airlines Flight UA639 San Francisco to San Antonio?
The Airportia On-Time Performance Rating for United Airlines Flight UA639 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA639 arriving at?
Flight UA639 arrives at San Antonio International Airport (SAT) Terminal B.
When was the latest UA639 flight?
The latest flight took off on Saturday, September 19th, 2026 with the flight status being Scheduled on 17:56.
How else can the flight UA639 be referenced as?
This United Airlines flight can also be referenced as UAL639, UA0639, UA 639, UAL 639.
How often is flight UA639 delayed?
On average, 50% of all UA639 flights are delayed. The average delay is 13 minutes.
Can I get compensation for my delayed or cancelled UA639 flight or baggage issues?
If your UA639 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA639 Flight Tracker above for more details.
Flight UA639 is code-shared by 2 airlines using the flight numbers AC4347, NZ2373
Other flights departing from San Francisco SFO: AA2334, DL977, UA1387, JL1
Other flights arriving at San Antonio SAT: WN1663, MQ4176, YV6157, AA2374
All flights connecting San Francisco SFO to San Antonio SAT.