$100+ Cheap flights from Rhode Island to St. Louis (STL)
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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
PVD — STL
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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Find cheap flights from Rhode Island to St. Louis 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 Rhode Island to St. Louis
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Cheapest flights from Rhode Island to St. LouisExplore the most affordable flight options available from Rhode Island to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
Explore the most affordable flight options available from Rhode Island to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 8/126:00 am
PVD
- STL
1 stop5h 14m
American Airlines
Wed 8/125:57 pm
STL
- PVD
1 stop5h 00m
American Airlines
Deal found 6/8![American Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Sun 8/211:52 am
BOS
- STL
1 stop6h 45m
Frontier
Fri 8/74:57 pm
STL
- BOS
1 stop13h 45m
Frontier
Deal found 6/5![Frontier logo]()
$343
This Frontier deal was found by Cheapflights users on 6/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:00 am
BOS
- STL
1 stop12h 30m
Frontier
Wed 6/245:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 6/5![Frontier logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 6/248:47 am
BOS
- STL
2 stops16h 02m
Frontier
Mon 6/295:06 pm
STL
- BOS
1 stop13h 46m
Frontier
Deal found 6/6![Frontier logo]()
$345
This Frontier deal was found by Cheapflights users on 6/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:10 am
BOS
- STL
1 stop9h 20m
Frontier
Sun 6/146:31 pm
STL
- BOS
1 stop5h 56m
Frontier
Deal found 6/7![Frontier logo]()
$346
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:30 am
BOS
- STL
1 stop4h 45m
Southwest
Wed 7/87:10 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/5![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 6/4. 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.
Tue 8/115:35 am
BOS
- STL
Nonstop2h 50m
Southwest
Mon 8/171:30 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/4![Southwest logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 6/298:47 am
BOS
- STL
2 stops33h 43m
Frontier
Sun 7/56:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 6/4![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 6/2412:01 pm
BOS
- STL
2 stops12h 48m
Frontier
Tue 7/146:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 6/9![Frontier logo]()
$350
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:59 am
BOS
- STL
1 stop6h 55m
American Airlines
Mon 8/176:00 am
STL
- BOS
1 stop5h 16m
American Airlines
Deal found 6/9![American Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am
PVD
- STL
1 stop5h 48m
Delta
Sun 12/65:45 pm
STL
- PVD
1 stop4h 38m
Delta
Deal found 6/8![Delta logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Mon 8/310:04 am
BOS
- STL
1 stop14h 55m
Frontier
Fri 8/74:57 pm
STL
- BOS
1 stop13h 45m
Frontier
Deal found 6/5![Frontier logo]()
$352
Best flights from Rhode Island to St. LouisDiscover carefully curated flight deals from Rhode Island to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from Rhode Island to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Southwest deal was found by Cheapflights users on 6/4. 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 8/265:35 am
BOS
- STL
Nonstop2h 50m
Southwest
Wed 8/2610:45 am
STL
- BOS
1 stop4h 25m
Southwest
Deal found 6/4![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 6/8. 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.
Tue 7/75:55 am
PVD
- STL
1 stop6h 35m
Southwest
Tue 7/144:00 pm
STL
- PVD
1 stop4h 30m
Southwest
Deal found 6/8![Southwest logo]()
$371
This Southwest deal was found by Cheapflights users on 6/9. 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 7/15:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Mon 7/132:30 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/9![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 6/8. 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.
Fri 9/46:10 pm
PVD
- STL
1 stop4h 55m
Southwest
Sun 9/612:25 pm
STL
- PVD
1 stop6h 30m
Southwest
Deal found 6/8![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 6/4. 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.
Tue 8/257:25 am
PVD
- STL
1 stop4h 55m
Southwest
Fri 8/286:05 am
STL
- PVD
1 stop4h 25m
Southwest
Deal found 6/4![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 6/8. 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.
Tue 7/286:30 pm
PVD
- STL
1 stop5h 00m
Southwest
Thu 7/3011:00 am
STL
- PVD
1 stop6h 20m
Southwest
Deal found 6/8![Southwest logo]()
$399
This Southwest deal was found by Cheapflights users on 6/6. 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.
Tue 7/145:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Tue 7/211:15 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/6![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 6/6. 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 7/49:20 am
PVD
- STL
2 stops7h 15m
Southwest
Sat 7/118:15 am
STL
- PVD
1 stop4h 10m
Southwest
Deal found 6/6![Southwest logo]()
$404
This Southwest deal was found by Cheapflights users on 6/8. 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 8/155:55 am
PVD
- STL
1 stop5h 55m
Southwest
Fri 8/215:35 am
STL
- PVD
1 stop6h 50m
Southwest
Deal found 6/8![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 6/9. 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.
Mon 7/201:25 pm
BOS
- STL
1 stop7h 55m
Southwest
Tue 7/217:10 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/9![Southwest logo]()
$409
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:35 am
BOS
- STL
2 stops7h 50m
Southwest
Sun 7/265:10 pm
STL
- BOS
1 stop6h 00m
Southwest
Deal found 6/5![Southwest logo]()
$424
This Southwest deal was found by Cheapflights users on 6/4. 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 6/265:35 am
BOS
- STL
Nonstop2h 50m
Southwest
Tue 7/77:10 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/4![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 6/6. 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.
Wed 7/155:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Sun 7/268:00 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/6![Southwest logo]()
$431
This Southwest deal was found by Cheapflights users on 6/7. 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.
Tue 7/144:20 pm
PVD
- STL
2 stops7h 45m
Southwest
Tue 7/215:40 am
STL
- PVD
2 stops7h 40m
Southwest
Deal found 6/7![Southwest logo]()
$437
This Southwest deal was found by Cheapflights users on 6/9. 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.
Mon 8/107:40 am
BOS
- STL
2 stops8h 30m
Southwest
Mon 8/172:45 pm
STL
- BOS
2 stops6h 25m
Southwest
Deal found 6/9![Southwest logo]()
$438
This Southwest deal was found by Cheapflights users on 6/8. 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.
Fri 9/45:00 am
BOS
- STL
Nonstop2h 50m
Southwest
Mon 9/71:30 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/8![Southwest logo]()
$440
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:55 pm
PVD
- STL
2 stops6h 35m
Southwest
Fri 7/1012:40 pm
STL
- PVD
2 stops7h 20m
Southwest
Deal found 6/5![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 6/7. 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.
Wed 7/812:50 pm
BOS
- STL
Nonstop2h 50m
Southwest
Thu 7/97:55 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/7![Southwest logo]()
$446
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:50 pm
BOS
- STL
Nonstop3h 05m
Southwest
Sun 7/262:35 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/5![Southwest logo]()
$461
Last-minute flights from Rhode Island to St. LouisDiscover last-minute flight deals from Rhode Island to St. Louis. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Rhode Island to St. Louis. Data last updated June 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:10 am
BOS
- STL
1 stop9h 20m
Frontier
Sun 6/146:31 pm
STL
- BOS
1 stop5h 56m
Frontier
Deal found 6/7![Frontier logo]()
$346
This Frontier deal was found by Cheapflights users on 6/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:10 am
BOS
- STL
1 stop9h 20m
Frontier
Tue 6/166:31 pm
STL
- BOS
1 stop5h 56m
Frontier
Deal found 6/8![Frontier logo]()
$354
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/169:10 am
BOS
- STL
1 stop9h 20m
Frontier
Mon 6/225:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 6/9![Frontier logo]()
$351
This Frontier deal was found by Cheapflights users on 6/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:00 am
BOS
- STL
1 stop12h 30m
Frontier
Wed 6/245:06 pm
STL
- BOS
1 stop7h 21m
Frontier
Deal found 6/5![Frontier logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 6/248:47 am
BOS
- STL
2 stops16h 02m
Frontier
Mon 6/295:06 pm
STL
- BOS
1 stop13h 46m
Frontier
Deal found 6/6![Frontier logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 6/2412:01 pm
BOS
- STL
2 stops12h 48m
Frontier
Tue 7/146:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 6/9![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 6/266:00 am
BOS
- STL
1 stop27h 52m
Frontier
Sun 6/286:31 pm
STL
- BOS
2 stops15h 34m
Frontier
Deal found 6/5![Frontier logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 6/298:47 am
BOS
- STL
2 stops33h 43m
Frontier
Sun 7/56:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 6/4![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Wed 7/16:00 am
BOS
- STL
2 stops18h 49m
Frontier
Tue 7/76:34 pm
STL
- BOS
1 stop12h 12m
Frontier
Deal found 6/7![Frontier logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/610:04 am
BOS
- STL
2 stops32h 33m
Frontier
Fri 7/104:57 pm
STL
- BOS
1 stop13h 45m
Frontier
Deal found 6/8![Frontier logo]()
$348
This Southwest deal was found by Cheapflights users on 6/8. 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.
Tue 7/75:55 am
PVD
- STL
1 stop6h 35m
Southwest
Tue 7/144:00 pm
STL
- PVD
1 stop4h 30m
Southwest
Deal found 6/8![Southwest logo]()
$371
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:30 am
BOS
- STL
1 stop4h 45m
Southwest
Wed 7/87:10 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 6/5![Southwest logo]()
$347
One-way flights from Rhode Island to St. LouisSearch for one-way flight options from Rhode Island to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from Rhode Island to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Tue 7/1411:52 am
BOS
- STL
1 stop6h 45m
Frontier
Deal found 6/7![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Tue 9/19:12 am
BOS
- STL
1 stop9h 18m
Frontier
Deal found 6/7![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/1912:01 pm
BOS
- STL
1 stop30h 29m
Frontier
Deal found 6/9![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Sat 8/2212:01 pm
BOS
- STL
1 stop30h 29m
Frontier
Deal found 6/7![Frontier logo]()
$112
This Super.com deal was found by Cheapflights users on 6/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:52 am
BOS
- STL
1 stop6h 45m
Frontier
Deal found 6/8![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Wed 9/212:01 pm
BOS
- STL
1 stop30h 29m
Frontier
Deal found 6/7![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 6/4. 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.
Tue 8/186:00 am
BOS
- STL
1 stop12h 30m
Frontier
Deal found 6/4![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 6/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:10 am
BOS
- STL
1 stop9h 20m
Frontier
Deal found 6/5![Frontier logo]()
$121
This Trip.com deal was found by Cheapflights users on 6/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:04 am
BOS
- STL
1 stop14h 55m
Frontier
Deal found 6/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Mon 8/3112:01 pm
BOS
- STL
1 stop30h 29m
Frontier
Deal found 6/5![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 6/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:12 am
BOS
- STL
1 stop9h 18m
Frontier
Deal found 6/5![Frontier logo]()
$127
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 8/127:02 am
PVD
- STL
1 stop6h 52m
American Airlines
Deal found 6/8![American Airlines logo]()
$138
Find flight deals from Rhode Island to St. Louis
Keep the following information in mind while searching for Rhode Island to St. Louis flight deals. Data was last updated June 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $275 (American Airlines) |
One-way from | $100 (Kiwi.com) |
Popular in | July |
Cheapest in | August |
Average price | $489 |
Cheapflights Fare Finder
Customize your flight search to find flights from Rhode Island to St. Louis 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 June 9, 2026.
Use the filters below to find and compare flights from Rhode Island to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Wed 8/26
5:35 am-7:25 am
Nonstop2h 50m
Lambert-St Louis
Wed 8/26
10:45 am-4:10 pm
1 stop4h 25m
$347
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Tue 7/7
5:55 am-11:30 am
1 stop6h 35m
Lambert-St Louis
Tue 7/14
4:00 pm-9:30 pm
1 stop4h 30m
$371
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Wed 7/1
5:50 am-7:45 am
Nonstop2h 55m
Lambert-St Louis
Mon 7/13
2:30 pm-6:05 pm
Nonstop2h 35m
$399
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Fri 9/4
6:10 pm-10:05 pm
1 stop4h 55m
Lambert-St Louis
Sun 9/6
12:25 pm-7:55 pm
1 stop6h 30m
$399
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Tue 8/25
7:25 am-11:20 am
1 stop4h 55m
Lambert-St Louis
Fri 8/28
6:05 am-11:30 am
1 stop4h 25m
$399
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Tue 7/28
6:30 pm-10:30 pm
1 stop5h 00m
Lambert-St Louis
Thu 7/30
11:00 am-6:20 pm
1 stop6h 20m
$399
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Tue 7/14
5:50 am-7:45 am
Nonstop2h 55m
Lambert-St Louis
Tue 7/21
1:15 pm-4:50 pm
Nonstop2h 35m
$401
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Sat 7/4
9:20 am-3:35 pm
2 stops7h 15m
Lambert-St Louis
Sat 7/11
8:15 am-1:25 pm
1 stop4h 10m
$404
ProvidenceSt. Louis
PVD - STL
PVDSTL
Providence-TFGreen
Sat 8/15
5:55 am-10:50 am
1 stop5h 55m
Lambert-St Louis
Fri 8/21
5:35 am-1:25 pm
1 stop6h 50m
$408
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Mon 7/20
1:25 pm-8:20 pm
1 stop7h 55m
Lambert-St Louis
Tue 7/21
7:10 pm-10:45 pm
Nonstop2h 35m
$409
Showing 1-10 of 41 resultsSorted by cheapest first
Best time to book a flight from Rhode Island to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Rhode Island with our price prediction graph.
BOS-STL
PVD-STL
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 Rhode Island to St. Louis
USRI-STL
BOS-STL
PVD-STL
What is the cheapest month to book a flight from Rhode Island to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Rhode Island to St. Louis (average of $182). Flying from Rhode Island to St. Louis in June is currently the most expensive (average of $388). 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 much does it cost to fly round-trip from Rhode Island to St. Louis?
Related info for your journey
Find useful and relevant information for your journey from Rhode Island to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsO'Fallon
Edwardsville
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Alternative routes for Rhode Island to St. Louis
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Complete your trip
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Rhode Island and St. Louis flights
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 9, 2026.
Rhode Island to St. Louis flights
Consider these flights traveling from Rhode Island to St. Louis.
Top 3 airlines flying from Rhode Island to St. Louis
Discover the top 3 airlines that operate flights from Rhode Island to St. Louis. 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$284 | Average$406 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$307 | Average$446 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$310 | Average$432 | FlexibilityNo cancel fee | On-time63% |