$117+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJU
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Missouri to Puerto Rico with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Missouri to Puerto Rico
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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 August 10, 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 August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Mon 10/59:16 am -
1 stop29h 01m
Thu 10/225:12 pm -
1 stop17h 54m
Deal found 8/6![Multiple Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/154:22 pm -
2 stops17h 38m
Sat 9/1911:51 am -
2 stops12h 08m
Deal found 8/10![American Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Mon 10/1210:06 am -
1 stop12h 32m
Thu 10/225:12 pm -
1 stop17h 54m
Deal found 8/6![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Mon 11/29:16 am -
1 stop13h 22m
Thu 11/126:12 pm -
1 stop16h 34m
Deal found 8/6![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/66:17 pm -
1 stop18h 59m
Sun 9/1311:23 am -
2 stops26h 47m
Deal found 8/8![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Mon 10/52:29 pm -
1 stop22h 11m
Wed 11/46:12 pm -
2 stops17h 28m
Deal found 8/6![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/212:29 pm -
2 stops25h 16m
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/7![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sun 9/66:17 pm -
1 stop18h 59m
Thu 9/104:39 pm -
2 stops21h 31m
Deal found 8/10![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Thu 10/2910:35 am -
2 stops12h 22m
Mon 11/25:30 pm -
1 stop18h 10m
Deal found 8/9![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/162:29 pm -
2 stops10h 44m
Sun 9/205:11 pm -
1 stop20h 59m
Deal found 8/9![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Wed 10/72:29 pm -
2 stops10h 44m
Sun 10/113:51 pm -
1 stop18h 49m
Deal found 8/6![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 11/99:46 am -
1 stop12h 52m
Tue 11/178:24 pm -
2 stops18h 58m
Deal found 8/7![Multiple Airlines logo]()
$284
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 August 10, 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 August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/212:29 pm -
1 stop22h 11m
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/7![Frontier logo]()
$317
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Sun 9/207:36 pm -
2 stops17h 21m
Sat 9/263:35 pm -
1 stop18h 33m
Deal found 8/8![American Airlines logo]()
$346
This Southwest deal was found by Cheapflights users on 8/6. 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.
Mon 10/263:35 pm -
2 stops8h 45m
Thu 10/295:00 am -
2 stops11h 35m
Deal found 8/6![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 9/266:19 am -
1 stop8h 23m
Tue 9/291:25 pm -
1 stop11h 19m
Deal found 8/5![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 8/6. 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.
Wed 9/211:00 am -
1 stop10h 29m
Wed 9/92:59 pm -
1 stop9h 43m
Deal found 8/6![Delta logo]()
$356
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 8/296:00 am -
1 stop7h 54m
Mon 8/3110:33 am -
2 stops13h 10m
Deal found 8/6![American Airlines logo]()
$346
This Southwest deal was found by Cheapflights users on 8/6. 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.
Sat 11/710:55 am -
Nonstop4h 20m
Wed 11/116:40 am -
1 stop13h 25m
Deal found 8/6![Southwest logo]()
$352
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 9/58:00 am -
2 stops11h 38m
Fri 9/111:00 am -
2 stops10h 12m
Deal found 8/8![United Airlines logo]()
$356
This Delta deal was found by Cheapflights users on 8/6. 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.
Fri 9/186:00 am -
1 stop9h 49m
Tue 9/225:59 pm -
1 stop6h 43m
Deal found 8/6![Delta logo]()
$356
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Wed 2/37:16 am -
2 stops11h 34m
Fri 2/124:07 pm -
1 stop8h 30m
Deal found 8/10![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 8/6. 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.
Mon 10/53:35 pm -
2 stops8h 45m
Thu 10/225:00 am -
2 stops9h 25m
Deal found 8/6![Southwest logo]()
$386
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/19:32 am -
1 stop12h 43m
Sun 9/1310:16 am -
1 stop14h 43m
Deal found 8/5![American Airlines logo]()
$356
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Sat 9/56:00 am -
2 stops13h 38m
Sat 9/121:00 am -
2 stops10h 12m
Deal found 8/9![United Airlines logo]()
$416
This Southwest deal was found by Cheapflights users on 8/9. 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.
Wed 11/410:55 am -
2 stops10h 25m
Tue 11/106:40 am -
2 stops14h 45m
Deal found 8/9![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 8/10. 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.
Sat 8/2911:20 am -
1 stop10h 09m
Sat 9/52:31 pm -
1 stop7h 19m
Deal found 8/10![Delta logo]()
$446
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 10/296:22 pm -
1 stop15h 58m
Mon 11/24:59 pm -
1 stop17h 26m
Deal found 8/10![American Airlines logo]()
$386
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Tue 9/16:25 am -
1 stop8h 17m
Sat 9/53:56 pm -
1 stop8h 23m
Deal found 8/7![United Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 8/9. 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.
Thu 10/14:20 pm -
2 stops8h 00m
Tue 10/610:00 am -
2 stops10h 00m
Deal found 8/9![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 8/10. 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.
Fri 9/47:45 pm -
1 stop12h 40m
Tue 9/86:00 am -
1 stop9h 50m
Deal found 8/10![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Tue 9/16:00 am -
2 stops13h 38m
Sat 9/57:00 am -
1 stop8h 09m
Deal found 8/8![United Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Mon 11/97:36 am -
2 stops15h 00m
Mon 11/162:05 am -
2 stops14h 18m
Deal found 8/10![United Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 8/6. 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.
Thu 9/244:15 pm -
1 stop6h 40m
Mon 9/285:00 am -
1 stop6h 40m
Deal found 8/6![Southwest logo]()
$410
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Wed 10/285:08 pm -
2 stops17h 12m
Mon 11/23:53 pm -
2 stops9h 59m
Deal found 8/10![American Airlines logo]()
$451
This Southwest deal was found by Cheapflights users on 8/8. 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.
Sat 10/175:20 am -
1 stop7h 05m
Sat 10/177:55 pm -
1 stop12h 45m
Deal found 8/8![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 8/9. 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.
Wed 12/27:30 pm -
1 stop12h 25m
Mon 12/77:40 am -
2 stops8h 30m
Deal found 8/9![Southwest logo]()
$426
This Southwest deal was found by Cheapflights users on 8/10. 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.
Sat 10/102:55 pm -
2 stops7h 55m
Thu 10/154:10 pm -
2 stops8h 45m
Deal found 8/10![Southwest logo]()
$450
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Tue 8/2510:00 am -
2 stops12h 09m
Fri 8/2812:15 am -
2 stops13h 05m
Deal found 8/9![United Airlines logo]()
$671
This Southwest deal was found by Cheapflights users on 8/8. 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.
Thu 10/153:35 pm -
2 stops8h 45m
Mon 10/196:30 am -
2 stops10h 05m
Deal found 8/8![Southwest logo]()
$486
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Mon 8/246:07 am -
1 stop16h 02m
Thu 8/2712:15 am -
2 stops15h 03m
Deal found 8/6![United Airlines logo]()
$706
This Southwest deal was found by Cheapflights users on 8/7. 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.
Thu 8/201:40 pm -
2 stops9h 10m
Tue 8/258:20 am -
2 stops8h 35m
Deal found 8/7![Southwest logo]()
$546
Last-minute flights from Missouri to Puerto RicoDiscover last-minute flight deals from Missouri to Puerto Rico. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Puerto Rico. Data last updated August 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Fri 9/46:17 pm -
1 stop18h 59m
Thu 9/104:39 pm -
2 stops21h 31m
Deal found 8/10![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Fri 9/46:17 pm -
2 stops29h 39m
Fri 9/116:30 am -
1 stop7h 40m
Deal found 8/10![Frontier logo]()
$293
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/58:09 am -
1 stop13h 15m
Fri 9/116:00 am -
2 stops10h 52m
Deal found 8/10![American Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/66:17 pm -
1 stop18h 59m
Sun 9/1311:23 am -
2 stops26h 47m
Deal found 8/8![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sun 9/66:17 pm -
1 stop18h 59m
Thu 9/104:39 pm -
2 stops21h 31m
Deal found 8/10![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sun 9/66:17 pm -
1 stop18h 59m
Fri 9/116:30 am -
1 stop7h 40m
Deal found 8/10![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Mon 9/76:17 pm -
1 stop18h 59m
Thu 9/104:39 pm -
2 stops21h 31m
Deal found 8/10![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Mon 9/76:17 pm -
2 stops30h 50m
Fri 9/116:30 am -
1 stop7h 40m
Deal found 8/10![Frontier logo]()
$288
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/154:22 pm -
2 stops17h 38m
Sat 9/193:41 pm -
1 stop17h 50m
Deal found 8/10![American Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/162:29 pm -
2 stops10h 44m
Sun 9/205:11 pm -
1 stop20h 59m
Deal found 8/9![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/212:29 pm -
2 stops25h 16m
Sun 9/275:11 pm -
1 stop20h 59m
Deal found 8/7![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Wed 9/232:29 pm -
2 stops10h 44m
Mon 9/286:30 am -
1 stop7h 40m
Deal found 8/6![Frontier logo]()
$284
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 August 10, 2026.
Search for one-way flight options from Missouri to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Mon 10/52:29 pm -
2 stops23h 48m
Deal found 8/6![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 8/178:42 am -
1 stop14h 59m
Deal found 8/8![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/76:17 pm -
2 stops30h 50m
Deal found 8/7![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Fri 9/112:29 pm -
2 stops42h 49m
Deal found 8/9![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Fri 9/46:17 pm -
2 stops29h 39m
Deal found 8/5![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Fri 10/22:29 pm -
2 stops25h 21m
Deal found 8/6![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 9/92:29 pm -
2 stops32h 29m
Deal found 8/8![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 10/72:29 pm -
2 stops10h 44m
Deal found 8/9![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 10/199:16 am -
1 stop13h 22m
Deal found 8/8![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 8/1910:23 am -
1 stop14h 52m
Deal found 8/8![Multiple Airlines logo]()
$161
This Delta deal was found by Cheapflights users on 8/7. 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.
Mon 12/76:00 am -
1 stop9h 25m
Deal found 8/7![Delta logo]()
$163
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 9/57:15 am -
1 stop14h 39m
Deal found 8/5![American Airlines logo]()
$173
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 August 10, 2026.
Round-trip from | $210 (Kiwi.com) |
|---|---|
One-way from | $117 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $436 |
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 August 10, 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 Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Mon 9/21
2:29 pm-1:40 pm
1 stop22h 11m
San Juan Luis Munoz Marin Intl
Sun 9/27
5:11 pm-1:10 pm
1 stop20h 59m
$317
SpringfieldSan Juan
SGF Springfield-Branson - SJU San Juan Luis Munoz Marin Intl
SGFSJU
Springfield-Branson
Sun 9/20
7:36 pm-1:57 pm
2 stops17h 21m
San Juan Luis Munoz Marin Intl
Sat 9/26
3:35 pm-9:08 am
1 stop18h 33m
$346
Kansas CitySan Juan
MCI Kansas City - SJU San Juan Luis Munoz Marin Intl
MCISJU
Kansas City
Mon 10/26
3:35 pm-1:20 am
2 stops8h 45m
San Juan Luis Munoz Marin Intl
Thu 10/29
5:00 am-3:35 pm
2 stops11h 35m
$346
Kansas CitySan Juan
MCI Kansas City - SJU San Juan Luis Munoz Marin Intl
MCISJU
Kansas City
Sat 9/26
6:19 am-3:42 pm
1 stop8h 23m
San Juan Luis Munoz Marin Intl
Tue 9/29
1:25 pm-11:44 pm
1 stop11h 19m
$346
SpringfieldSan Juan
SGF Springfield-Branson - SJU San Juan Luis Munoz Marin Intl
SGFSJU
Springfield-Branson
Sat 8/29
6:00 am-2:54 pm
1 stop7h 54m
San Juan Luis Munoz Marin Intl
Mon 8/31
10:33 am-10:43 pm
2 stops13h 10m
$346
SpringfieldSan Juan
SGF Springfield-Branson - SJU San Juan Luis Munoz Marin Intl
SGFSJU
Springfield-Branson
Wed 2/3
7:16 am-8:50 pm
2 stops11h 34m
San Juan Luis Munoz Marin Intl
Fri 2/12
4:07 pm-10:37 pm
1 stop8h 30m
$351
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sat 11/7
10:55 am-5:15 pm
Nonstop4h 20m
San Juan Luis Munoz Marin Intl
Wed 11/11
6:40 am-6:05 pm
1 stop13h 25m
$352
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Wed 9/2
11:00 am-10:29 pm
1 stop10h 29m
San Juan Luis Munoz Marin Intl
Wed 9/9
2:59 pm-11:42 pm
1 stop9h 43m
$356
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Sat 9/5
8:00 am-8:38 pm
2 stops11h 38m
San Juan Luis Munoz Marin Intl
Fri 9/11
1:00 am-10:12 am
2 stops10h 12m
$356
St. LouisSan Juan
STL Lambert-St Louis - SJU San Juan Luis Munoz Marin Intl
STLSJU
Lambert-St Louis
Fri 9/18
6:00 am-4:49 pm
1 stop9h 49m
San Juan Luis Munoz Marin Intl
Tue 9/22
5:59 pm-11:42 pm
1 stop6h 43m
$356
Showing 1-10 of 60 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
SGF-SJU
MCI-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
SGF-SJU
MCI-SJU
MCI-BQN
What is the cheapest month to book a flight from Missouri to Puerto Rico?
Currently, September is the cheapest month in which you can book a flight from Missouri to Puerto Rico (average of $330). Flying from Missouri to Puerto Rico in December is currently the most expensive (average of $582). 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.
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 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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
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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 August 10, 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 5 airlines flying from Missouri to Puerto Rico
Discover the top 5 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$451 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$132 | Average$352 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$215 | Average$481 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$235 | Average$537 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$491 | FlexibilityNo cancel fee | On-time63% |