Live tracking not available yet
UA1639 has a schedule in our database but isn't on the airport board right now. Live position data typically appears within a few hours of departure.
Flight Status
Scheduled
Route Info
SBP
San Luis County Regional Airport
San Luis Obispo
Scheduled 6:01 AM
SFO
San Francisco International Airport
San Francisco
T3 Scheduled 7:06 AM
1h 5m flight time
Daily
Recent Flights
Last 4 observedMar 14
Sat
MIA
ORD
Dep 18:55:00
(actual 17:57:00)
738
In Air
Mar 12
Thu
MIA
ORD
Dep 17:30:00
(actual 17:58:00)
738
Boarding
Mar 09
Mon
MIA
ORD
Dep 17:30:00
(actual 18:03:00)
738
In Air
Mar 08
Sun
MIA
ORD
Dep 19:00:00
(actual 17:49:00)
738
In Air
Schedule
Operating Days
Mo
Tu
We
Th
Fr
Sa
Su
Upcoming
Fri, Mar 20
Sat, Mar 21
Sun, Mar 22
Mon, Mar 23
Tue, Mar 24
Wed, Mar 25
Thu, Mar 26
Schedule valid
Mar 29 —
May 20, 2026