St. Louis (STL) to San Juan (SJU) flight deal in business from $373
STLLambert-Saint Louis International Airport
St. Louis, United States
SJULuis Muñoz Marín International Airport
San Juan, Puerto Rico
$469 USD
-20%$373 USD
Verified 16 days agoSeptember 2026
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Rare Availability
9% of dates checked are available within 10% of the lowest price
Wednesday, September 9th, 2026
Outbound Flights
8h 23m·1 stop
$373 USD
STLSep 9 11:15
→IAHSep 9 13:32
UA 5589Embraer 175
1h 34m layover
IAHSep 9 15:06
→SJUSep 9 20:38
UA 701Boeing 737MAX 9 Passenger
10h 22m·1 stop
$373 USDSTLSep 9 12:28
→EWRSep 9 15:59
UA 560Boeing 737MAX 9 Passenger
3h 48m layover
EWRSep 9 19:47
→SJUSep 9 23:50
UA 1543Boeing 737MAX 9 Passenger
7h 54m·1 stop
$422 USD
STLSep 9 05:00
→MIASep 9 08:44
AA 1716Boeing 737
2h 28m layover
MIASep 9 11:12
→SJUSep 9 13:54
AA 1613Airbus A321
15h 11m·2 stops
$422 USDSTLSep 9 17:13
→DCASep 9 20:19
AA 2286Airbus A319
41m layover
DCASep 9 21:00
→MIASep 9 23:45
AA 2214Boeing 737MAX 8 Passenger
7h layover·Overnight
MIASep 10 06:45
→SJUSep 10 09:24
AA 3033Airbus A321
8h 44m·1 stop
$468 USD
STLSep 9 07:05
→ATLSep 9 09:39
DL 1536Boeing 737
3h 39m layover
ATLSep 9 13:18
→SJUSep 9 16:49
DL 1946Boeing 737
7h 57m·1 stop
$618 USDSTLSep 9 06:15
→IAHSep 9 08:32
UA 4581Bombardier Regional Jet 550
1h 8m layover
IAHSep 9 09:40
→SJUSep 9 15:12
UA 1192Boeing 737MAX 9 Passenger
6h 47m·1 stop
$688 USDSTLSep 9 06:00
→ATLSep 9 08:35
DL 1524Boeing 737
1h 32m layover
ATLSep 9 10:07
→SJUSep 9 13:47
DL 1882Airbus A321
7h 44m·1 stop
$688 USDSTLSep 9 06:00
→ORDSep 9 07:33
UA 4423Bombardier Regional Jet 550
1h 22m layover
ORDSep 9 08:55
→SJUSep 9 14:44
UA 1996Airbus A321neo