To get to their first destination (Sao Paulo) , teams leaving LAX mid-day Tuesday on American Airlines would have used one of these flights:
1) via Dallas
LAX to DFW on AA 2300, takeoff 10:45 am, arrives 3:45 pm.
LAX to DFW on AA 2157, takeoff 11:55 am, arrives 4:55 pm.
LAX to DFW on AA 2446, takeoff 12:50 pm, arrives 5:40 pm.
LAX to DFW on AA 2448, takeoff 1:25 pm, arrives 6:29 pm.
DFW to GRU on AA 963, takeoff 7:45 pm, arrives 7:50 am Wednesday.
2) via New York
LAX to JFK on AA 40, takeoff 10:45 am, arrives 7:15 pm.
LAX to JFK on AA 4, takeoff 12:00 noon, arrives 8:30 pm.
JFK to GRU on AA 951, takeoff 9:30 pm, arrives 8:00 am Wednesday.
3) via Lima
LAX to LIM on AA 7734, takeoff 1:20 pm, arrives 11:55 pm.
LAX to LIM on AA 5606, takeoff 1:50 pm, arrives 12:25 am Wednesday.
LIM to GRU on LAN 765, takeoff 1:35 am, arrives 8:25 am Wednesday.
4) via Miami
LAX to MIA on AA 1520, takeoff 12:00 noon, arrives 7:50 pm.
LAX to MIA on AA 252, takeoff 1:55 pm, arrives 9:42 pm.
MIA to GRU on AA 995, takeoff 11:30 pm, arrives 8:30 am Wednesday.
And teams leaving LAX mid-day Tuesday on United Airlines would have used one of these flights:
1) via Chicago
LAX to ORD on UA 114, takeoff 12:04 pm, arrives 6:07 pm.
LAX to ORD on UA 843, takeoff 2:05 pm, arrives 8:05 pm.
ORD to GRU on UA 843, takeoff 9:32 pm, arrives 10:05 am.
2) via Washington DC
LAX to IAD on UA 862, takeoff 12:54 pm, arrives 8:50 pm.
IAD to GRU on UA 861, takeoff 9:43 pm, arrives 8:20 am Wednesday.
The sighting of a racer in Chicago rules out the Washington DC option.
So it looks like the AA flight combination is the one that the teams should try to secure. The United flight through Chicago arrives about an hour and a half to two hours later than the American route depending which one it turns out to be.
Fixed the pm thing. Thanks Apskip