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
Friday, September 18th, 2026
Outbound Flights
14h 39m·2 stops
$417 USD
STLSep 18 17:45
→PHLSep 18 21:07
AA 3049Airbus A319
56m layover
PHLSep 18 22:03
→MIASep 19 00:59
AA 2936Airbus A321
5h 46m layover
MIASep 19 06:45
→SJUSep 19 09:24
AA 3033Airbus A321
18h 13m·1 stop
$495 USDSTLSep 18 14:11
→MIASep 18 17:57
AA 477Boeing 737MAX 8 Passenger
12h 48m layover·Overnight
MIASep 19 06:45
→SJUSep 19 09:24
AA 3033Airbus A321
6h 57m·1 stop
$498 USDSTLSep 18 06:53
→CLTSep 18 09:50
AA 1515Boeing 737
1h 15m layover
CLTSep 18 11:05
→SJUSep 18 14:50
AA 783Airbus A321
7h 57m·1 stop
$548 USDSTLSep 18 05:00
→MIASep 18 08:44
AA 1716Boeing 737
2h 31m layover
MIASep 18 11:15
→SJUSep 18 13:57
AA 1613Airbus A321
8h 2m·1 stop
$588 USDSTLSep 18 05:43
→DFWSep 18 07:40
AA 2261Airbus A320
1h 6m layover
DFWSep 18 08:46
→SJUSep 18 14:45
AA 702Airbus A321
7h 44m·1 stop
$708 USD
STLSep 18 06:00
→ORDSep 18 07:33
UA 4423Bombardier Regional Jet 550
1h 22m layover
ORDSep 18 08:55
→SJUSep 18 14:44
UA 1996Airbus A321neo
8h 23m·1 stop
$708 USDSTLSep 18 11:15
→IAHSep 18 13:32
UA 5589Embraer 175
1h 34m layover
IAHSep 18 15:06
→SJUSep 18 20:38
UA 701Boeing 737MAX 9 Passenger
6h 47m·1 stop
$718 USD
STLSep 18 06:00
→ATLSep 18 08:35
DL 1524Boeing 737
1h 32m layover
ATLSep 18 10:07
→SJUSep 18 13:47
DL 1882Airbus A321