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
Monday, September 21st, 2026
Outbound Flights
8h 2m·1 stop
$427 USD
STLSep 21 05:43
→DFWSep 21 07:40
AA 2261Airbus A320
1h 6m layover
DFWSep 21 08:46
→SJUSep 21 14:45
AA 702Airbus A321
6h 57m·1 stop
$427 USDSTLSep 21 06:53
→CLTSep 21 09:50
AA 1515Boeing 737
1h 15m layover
CLTSep 21 11:05
→SJUSep 21 14:50
AA 783Airbus A321
19h 12m·2 stops
$427 USDSTLSep 21 17:45
→PHLSep 21 21:07
AA 3049Airbus A319
56m layover
PHLSep 21 22:03
→MIASep 22 00:59
AA 2936Airbus A321
10h 16m layover
MIASep 22 11:15
→SJUSep 22 13:57
AA 1613Airbus A321
8h 44m·1 stop
$478 USD
STLSep 21 07:05
→ATLSep 21 09:39
DL 1536Boeing 737
3h 39m layover
ATLSep 21 13:18
→SJUSep 21 16:49
DL 1946Boeing 737
7h 57m·1 stop
$508 USDSTLSep 21 05:00
→MIASep 21 08:44
AA 1716Boeing 737
2h 31m layover
MIASep 21 11:15
→SJUSep 21 13:57
AA 1613Airbus A321
7h 44m·1 stop
$523 USD
STLSep 21 06:00
→ORDSep 21 07:33
UA 4423Bombardier Regional Jet 550
1h 22m layover
ORDSep 21 08:55
→SJUSep 21 14:44
UA 1996Airbus A321neo
6h 47m·1 stop
$530 USDSTLSep 21 06:00
→ATLSep 21 08:35
DL 1524Boeing 737
1h 32m layover
ATLSep 21 10:07
→SJUSep 21 13:47
DL 1882Airbus A321
8h 23m·1 stop
$560 USDSTLSep 21 11:15
→IAHSep 21 13:32
UA 5589Embraer 175
1h 34m layover
IAHSep 21 15:06
→SJUSep 21 20:38
UA 701Boeing 737MAX 9 Passenger