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 16th, 2026
Outbound Flights
8h 23m·1 stop
$383 USD
STLSep 16 11:15
→IAHSep 16 13:32
UA 5589Embraer 175
1h 34m layover
IAHSep 16 15:06
→SJUSep 16 20:38
UA 701Boeing 737MAX 9 Passenger
7h 57m·1 stop
$436 USD
STLSep 16 05:00
→MIASep 16 08:44
AA 1716Boeing 737
2h 31m layover
MIASep 16 11:15
→SJUSep 16 13:57
AA 1613Airbus A321
6h 57m·1 stop
$436 USDSTLSep 16 06:53
→CLTSep 16 09:50
AA 1515Airbus A321
1h 15m layover
CLTSep 16 11:05
→SJUSep 16 14:50
AA 783Airbus A321
6h 49m·1 stop
$478 USD
STLSep 16 14:30
→ATLSep 16 17:05
DL 566Boeing 737
1h 40m layover
ATLSep 16 18:45
→SJUSep 16 22:19
DL 1861Boeing 737
10h 22m·1 stop
$499 USDSTLSep 16 12:28
→EWRSep 16 15:59
UA 560Boeing 737MAX 9 Passenger
3h 48m layover
EWRSep 16 19:47
→SJUSep 16 23:50
UA 1543Boeing 737MAX 9 Passenger
16h 50m·1 stop
$503 USDSTLSep 16 17:10
→MIASep 16 21:00
AA 3851Embraer 175
11h 20m layover·Overnight
MIASep 17 08:20
→SJUSep 17 11:00
AA 1341Boeing 737
6h 45m·1 stop
$578 USDSTLSep 16 06:00
→ATLSep 16 08:35
DL 1524Boeing 737
1h 32m layover
ATLSep 16 10:07
→SJUSep 16 13:45
DL 1882Airbus A321
7h 44m·1 stop
$708 USDSTLSep 16 06:00
→ORDSep 16 07:33
UA 4423Bombardier Regional Jet 550
1h 22m layover
ORDSep 16 08:55
→SJUSep 16 14:44
UA 1996Airbus A321neo