$88+ Cheap flights from Missouri to Puerto Rico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Mai 28 — Jun 41
Round-trip
1 adult, Economy
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Cheapest flights from Missouri to Puerto RicoExplore the most affordable flight options available from Missouri to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
Explore the most affordable flight options available from Missouri to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
This Trip.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sa 5/93:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/23![Frontier logo]()
$233
This Priceline deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/114:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Do 5/143:03 am
SJU
- STL
1 stop22h 18m
Frontier
Deal found 4/26![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 6/14:19 pm
STL
- SJU
1 stop8h 52m
Frontier
Do 6/46:09 pm
SJU
- STL
1 stop6h 48m
Frontier
Deal found 4/27![Frontier logo]()
$243
This Priceline deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fr 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/24![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 8/14:09 pm
STL
- SJU
1 stop9h 02m
Frontier
Do 8/66:32 am
SJU
- STL
1 stop9h 17m
Frontier
Deal found 4/27![Frontier logo]()
$258
This Priceline deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 4/244:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Do 4/303:21 am
SJU
- STL
1 stop20h 58m
Frontier
Deal found 4/23![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 6/16:24 pm
MCI
- SJU
2 stops17h 51m
Frontier
Fr 6/55:15 pm
SJU
- MCI
1 stop25h 14m
Frontier
Deal found 4/26![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 6/124:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Fr 6/194:05 pm
SJU
- STL
1 stop9h 04m
Frontier
Deal found 4/28![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 6/204:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Sa 6/276:00 am
SJU
- STL
1 stop19h 09m
Frontier
Deal found 4/25![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/196:33 pm
STL
- SJU
2 stops21h 53m
Frontier
Fr 5/295:15 pm
SJU
- STL
1 stop16h 40m
Frontier
Deal found 4/27![Frontier logo]()
$282
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 8/115:17 am
MCI
- SJU
2 stops12h 07m
American Airlines
Di 8/183:44 pm
SJU
- MCI
1 stop8h 15m
American Airlines
Deal found 4/23![American Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/272:34 pm
MCI
- SJU
2 stops49h 40m
Frontier
Fr 6/55:15 pm
SJU
- MCI
1 stop25h 14m
Frontier
Deal found 4/25![Frontier logo]()
$294
Best flights from Missouri to Puerto RicoDiscover carefully curated flight deals from Missouri to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
Discover carefully curated flight deals from Missouri to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 9/55:05 am
STL
- SJU
1 stop7h 55m
Southwest
Sa 9/1910:25 am
SJU
- STL
1 stop10h 20m
Southwest
Deal found 4/27![Southwest logo]()
$336
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 8/18:00 am
STL
- SJU
1 stop7h 45m
Delta
Do 8/65:56 pm
SJU
- STL
1 stop6h 57m
Delta
Deal found 4/25![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/16:10 am
MCI
- SJU
1 stop8h 32m
United Airlines
So 5/33:56 pm
SJU
- MCI
1 stop8h 35m
United Airlines
Deal found 4/24![United Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 9/206:00 am
SGF
- SJU
1 stop8h 02m
American Airlines
Sa 9/266:30 am
SJU
- SGF
2 stops13h 50m
American Airlines
Deal found 4/23![American Airlines logo]()
$611
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 9/206:00 am
SGF
- SJU
1 stop9h 31m
Delta
Sa 9/2612:58 pm
SJU
- SGF
1 stop10h 31m
Delta
Deal found 4/26![Delta logo]()
$373
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 9/17:15 am
STL
- SJU
2 stops9h 55m
Southwest
So 9/65:30 am
SJU
- STL
2 stops11h 20m
Southwest
Deal found 4/23![Southwest logo]()
$427
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 9/96:00 am
SGF
- SJU
1 stop9h 35m
Delta
So 9/1312:58 pm
SJU
- SGF
1 stop10h 31m
Delta
Deal found 4/27![Delta logo]()
$436
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 7/32:55 pm
MCI
- SJU
1 stop8h 10m
Southwest
Mi 7/88:35 pm
SJU
- MCI
1 stop13h 50m
Southwest
Deal found 4/23![Southwest logo]()
$458
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/286:00 am
STL
- SJU
2 stops14h 24m
United Airlines
Di 6/21:00 am
SJU
- STL
2 stops12h 11m
United Airlines
Deal found 4/27![United Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 9/206:00 am
STL
- SJU
1 stop9h 31m
Delta
Sa 9/265:41 pm
SJU
- STL
1 stop6h 56m
Delta
Deal found 4/27![Delta logo]()
$436
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 7/172:50 pm
STL
- SJU
1 stop8h 15m
Southwest
Sa 8/155:05 am
SJU
- STL
2 stops8h 30m
Southwest
Deal found 4/26![Southwest logo]()
$467
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/286:00 am
STL
- SJU
2 stops14h 24m
United Airlines
Mi 6/31:00 am
SJU
- STL
2 stops12h 11m
United Airlines
Deal found 4/27![United Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/95:39 am
MCI
- SJU
1 stop9h 54m
Delta
So 5/247:30 am
SJU
- MCI
1 stop7h 29m
Delta
Deal found 4/27![Delta logo]()
$466
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 7/142:11 pm
SGF
- SJU
1 stop8h 40m
American Airlines
Mi 7/227:25 am
SJU
- SGF
1 stop15h 09m
American Airlines
Deal found 4/25![American Airlines logo]()
$661
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 5/38:00 am
MCI
- SJU
2 stops12h 24m
United Airlines
Mi 5/61:00 am
SJU
- MCI
2 stops12h 24m
United Airlines
Deal found 4/23![United Airlines logo]()
$556
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/43:04 pm
MCI
- SJU
1 stop7h 09m
Delta
Mi 5/205:43 pm
SJU
- MCI
1 stop7h 06m
Delta
Deal found 4/24![Delta logo]()
$466
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/68:00 am
MCI
- SJU
2 stops11h 38m
United Airlines
Mi 5/137:20 am
SJU
- MCI
2 stops15h 44m
United Airlines
Deal found 4/27![United Airlines logo]()
$556
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/77:05 am
MCI
- SJU
1 stop8h 28m
Delta
Mo 5/115:43 pm
SJU
- MCI
1 stop7h 06m
Delta
Deal found 4/23![Delta logo]()
$466
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 6/279:23 am
STL
- SJU
1 stop10h 11m
United Airlines
Di 6/301:00 am
SJU
- STL
2 stops12h 11m
United Airlines
Deal found 4/27![United Airlines logo]()
$557
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/28:10 am
MCI
- SJU
1 stop7h 13m
Delta
Sa 5/161:14 pm
SJU
- MCI
1 stop11h 35m
Delta
Deal found 4/24![Delta logo]()
$466
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/292:10 pm
STL
- SJU
2 stops8h 45m
Southwest
Mo 6/15:35 am
SJU
- STL
2 stops10h 55m
Southwest
Deal found 4/27![Southwest logo]()
$621
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/25:40 am
MCI
- SJU
1 stop6h 45m
Delta
Mi 5/67:30 am
SJU
- MCI
1 stop7h 28m
Delta
Deal found 4/23![Delta logo]()
$466
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 8/2211:20 am
MCI
- BQN
2 stops10h 49m
United Airlines
Di 8/2512:15 am
BQN
- MCI
2 stops11h 06m
United Airlines
Deal found 4/26![United Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/286:00 am
MCI
- SJU
1 stop16h 50m
United Airlines
Di 6/22:05 am
SJU
- MCI
1 stop8h 58m
United Airlines
Deal found 4/26![United Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 5/310:49 am
MCI
- SJU
1 stop11h 24m
Delta
Fr 5/87:30 am
SJU
- MCI
1 stop9h 38m
Delta
Deal found 4/27![Delta logo]()
$511
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 9/66:00 am
SGF
- SJU
1 stop9h 35m
Delta
Sa 9/1212:58 pm
SJU
- SGF
1 stop10h 31m
Delta
Deal found 4/27![Delta logo]()
$513
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 6/195:41 pm
STL
- SJU
1 stop25h 53m
United Airlines
Di 6/231:00 am
SJU
- STL
2 stops12h 11m
United Airlines
Deal found 4/27![United Airlines logo]()
$622
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 9/411:40 am
SGF
- SJU
1 stop9h 43m
Delta
Fr 9/1112:58 pm
SJU
- SGF
1 stop10h 31m
Delta
Deal found 4/27![Delta logo]()
$538
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/138:00 am
SGF
- SJU
2 stops12h 24m
United Airlines
Sa 5/161:00 am
SJU
- SGF
2 stops10h 40m
United Airlines
Deal found 4/27![United Airlines logo]()
$675
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 8/236:00 am
MCI
- BQN
1 stop16h 09m
United Airlines
Mi 8/2612:15 am
BQN
- MCI
2 stops15h 02m
United Airlines
Deal found 4/27![United Airlines logo]()
$675
Last-minute flights from Missouri to Puerto RicoDiscover last-minute flight deals from Missouri to Puerto Rico. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Puerto Rico. Data last updated April 28, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/274:59 pm
STL
- SJU
1 stop15h 55m
Frontier
So 5/33:21 am
SJU
- STL
1 stop20h 58m
Frontier
Deal found 4/23![Frontier logo]()
$261
This Trip.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Sa 5/93:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/23![Frontier logo]()
$233
This Priceline deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/24:59 pm
STL
- SJU
1 stop8h 02m
Frontier
Fr 5/83:33 pm
SJU
- STL
1 stop9h 48m
Frontier
Deal found 4/24![Frontier logo]()
$256
This Priceline deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/114:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Do 5/143:03 am
SJU
- STL
1 stop22h 18m
Frontier
Deal found 4/26![Frontier logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/196:33 pm
STL
- SJU
2 stops21h 53m
Frontier
Fr 5/295:15 pm
SJU
- STL
1 stop16h 40m
Frontier
Deal found 4/27![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/205:27 pm
STL
- SJU
2 stops21h 28m
Frontier
Fr 5/295:15 pm
SJU
- STL
1 stop16h 40m
Frontier
Deal found 4/27![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/224:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Sa 5/236:25 am
SJU
- STL
1 stop14h 06m
Frontier
Deal found 4/27![Frontier logo]()
$293
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/263:33 pm
STL
- SJU
1 stop12h 16m
Frontier
Do 6/46:09 pm
SJU
- STL
1 stop6h 48m
Frontier
Deal found 4/27![Frontier logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/272:34 pm
MCI
- SJU
2 stops49h 40m
Frontier
Fr 6/55:15 pm
SJU
- MCI
1 stop25h 14m
Frontier
Deal found 4/25![Frontier logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/286:33 pm
STL
- SJU
2 stops20h 17m
Frontier
Fr 6/55:15 pm
SJU
- STL
1 stop16h 40m
Frontier
Deal found 4/26![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/282:34 pm
MCI
- SJU
2 stops36h 27m
Frontier
Fr 6/55:15 pm
SJU
- MCI
1 stop25h 14m
Frontier
Deal found 4/26![Frontier logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/302:34 pm
MCI
- SJU
2 stops13h 15m
Frontier
Fr 6/55:15 pm
SJU
- MCI
1 stop25h 14m
Frontier
Deal found 4/25![Frontier logo]()
$301
One-way flights from Missouri to Puerto RicoSearch for one-way flight options from Missouri to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
Search for one-way flight options from Missouri to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This Priceline deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/164:19 pm
STL
- SJU
1 stop14h 45m
Frontier
Deal found 4/24![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/154:19 pm
STL
- SJU
1 stop14h 45m
Frontier
Deal found 4/25![Frontier logo]()
$97
This Expedia deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 6/244:17 pm
STL
- SJU
1 stop14h 38m
Frontier
Deal found 4/26![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 7/254:09 pm
STL
- SJU
1 stop9h 02m
Frontier
Deal found 4/27![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/234:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Deal found 4/23![Frontier logo]()
$123
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 8/256:00 am
STL
- SJU
1 stop9h 35m
Delta
Deal found 4/23![Delta logo]()
$129
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 6/64:19 pm
STL
- SJU
1 stop8h 49m
Frontier
Deal found 4/27![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 6/105:13 pm
STL
- SJU
2 stops54h 02m
Frontier
Deal found 4/25![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 6/234:17 pm
STL
- SJU
1 stop8h 52m
Frontier
Deal found 4/24![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 6/227:03 pm
STL
- SJU
1 stop8h 52m
Frontier
Deal found 4/27![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/255:27 pm
STL
- SJU
2 stops29h 32m
Frontier
Deal found 4/25![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 6/206:16 pm
MCI
- SJU
1 stop21h 27m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$169
Find flight deals from Missouri to Puerto Rico
Keep the following information in mind while searching for Missouri to Puerto Rico flight deals. Data was last updated April 28, 2026.
Round-trip from | $236 (Priceline) |
|---|---|
One-way from | $88 (Priceline) |
Popular in | December |
Cheapest in | September |
Average price | $339 |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri to Puerto Rico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Missouri to Puerto Rico that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sa 9/5
5:05 am-2:00 pm
1 stop7h 55m
San Juan Luis Munoz Marin Intl
Sa 9/19
10:25 am-7:45 pm
1 stop10h 20m
$336
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Sa 8/1
8:00 am-4:45 pm
1 stop7h 45m
San Juan Luis Munoz Marin Intl
Do 8/6
5:56 pm-11:53 pm
1 stop6h 57m
$336
SpringfieldSan Juan
SGF - SJU
SGFSJU
Springfield-Branson
So 9/20
6:00 am-4:31 pm
1 stop9h 31m
San Juan Luis Munoz Marin Intl
Sa 9/26
12:58 pm-10:29 pm
1 stop10h 31m
$373
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
Di 9/1
7:15 am-6:10 pm
2 stops9h 55m
San Juan Luis Munoz Marin Intl
So 9/6
5:30 am-3:50 pm
2 stops11h 20m
$427
SpringfieldSan Juan
SGF - SJU
SGFSJU
Springfield-Branson
Mi 9/9
6:00 am-4:35 pm
1 stop9h 35m
San Juan Luis Munoz Marin Intl
So 9/13
12:58 pm-10:29 pm
1 stop10h 31m
$436
St. LouisSan Juan
STL - SJU
STLSJU
Lambert-St Louis
So 9/20
6:00 am-4:31 pm
1 stop9h 31m
San Juan Luis Munoz Marin Intl
Sa 9/26
5:41 pm-11:37 pm
1 stop6h 56m
$436
Kansas CitySan Juan
MCI - SJU
MCISJU
Kansas City
Fr 7/3
2:55 pm-12:05 am
1 stop8h 10m
San Juan Luis Munoz Marin Intl
Mi 7/8
8:35 pm-9:25 am
1 stop13h 50m
$458
Kansas CitySan Juan
MCI - SJU
MCISJU
Kansas City
Fr 5/1
6:10 am-3:42 pm
1 stop8h 32m
San Juan Luis Munoz Marin Intl
So 5/3
3:56 pm-11:31 pm
1 stop8h 35m
$466
Kansas CitySan Juan
MCI - SJU
MCISJU
Kansas City
Sa 5/9
5:39 am-4:33 pm
1 stop9h 54m
San Juan Luis Munoz Marin Intl
So 5/24
7:30 am-1:59 pm
1 stop7h 29m
$466
Kansas CitySan Juan
MCI - SJU
MCISJU
Kansas City
Mo 5/4
3:04 pm-11:13 pm
1 stop7h 09m
San Juan Luis Munoz Marin Intl
Mi 5/20
5:43 pm-11:49 pm
1 stop7h 06m
$466
Showing 1-10 of 58 resultsSorted by cheapest first
Best time to book a flight from Missouri to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Missouri with our price prediction graph.
STL-SJU
MCI-SJU
SGF-SJU
MCI-BQN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Missouri to Puerto Rico
USMO-PR0
STL-SJU
MCI-SJU
SGF-SJU
MCI-BQN
How far ahead should I book a flight from Missouri to Puerto Rico?
The price you pay for your flight from Missouri to Puerto Rico may vary depending on when you book. For the best chance of a lower fare, look to book 23 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Missouri to Puerto Rico?
Currently, July is the cheapest month in which you can book a flight from Missouri to Puerto Rico (average of $101). Flying from Missouri to Puerto Rico in January is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Related info for your journey
Find useful and relevant information for your journey from Missouri to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Missouri to Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missouri to Puerto Rico by cabin class
Find flights from Missouri to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Missouri and Puerto Rico flights
Browse other Missouri and Puerto Rico flight options. Last updated on April 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Missouri to Puerto Rico flights
Consider these flights traveling from Missouri to Puerto Rico.
Top 6 airlines flying from Missouri to Puerto Rico
Discover the top 6 airlines that operate flights from Missouri to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$430 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$330 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$153 | Average$339 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$215 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$219 | Average$504 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$226 | Average$501 | FlexibilityNo cancel fee | On-time71% |