St. Louis

$90+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
PVD — STL
Aug 27 — Sep 31
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Cheap 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 August 22, 2025.

Round-trip from

$252
(FlightHub)

One-way from

$90
(FlightHub)

Popular in

April

Cheapest in

August

Average price

$382
From Rhode Island to Lambert-St Louis
One-way flight from Rhode Island to Lambert-St Louis
Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Rhode Island to St. Louis

Cheapest flights from Rhode Island to St. Louis
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 August 22, 2025.

This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:11 amBOS - STL
1 stop28h 51mMultiple Airlines
Fri 10/312:12 pmSTL - BOS
1 stop17h 16mMultiple Airlines
Deal found 8/21$252
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 amBOS - STL
1 stop12h 31mMultiple Airlines
Sun 12/1412:20 pmSTL - BOS
1 stop11h 20mMultiple Airlines
Deal found 8/21$254
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:00 pmBOS - STL
1 stop20h 02mSpirit Airlines
Sun 10/1210:57 amSTL - BOS
1 stop12h 02mSpirit Airlines
Deal found 8/21$255
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/1210:53 amBOS - STL
2 stops48h 01mFrontier
Sun 9/214:00 pmSTL - BOS
1 stop16h 58mFrontier
Deal found 8/19$256
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/187:00 amBOS - STL
Nonstop3h 12mAmerican Airlines
Tue 9/239:56 amSTL - BOS
1 stop7h 49mAmerican Airlines
Deal found 8/19$257
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/276:10 amBOS - STL
1 stop28h 30mMultiple Airlines
Sun 9/284:00 pmSTL - BOS
1 stop16h 58mMultiple Airlines
Deal found 8/21$258
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/68:38 amBOS - STL
2 stops25h 28mFrontier
Sun 9/144:00 pmSTL - BOS
1 stop16h 58mFrontier
Deal found 8/18$260
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/103:00 pmBOS - STL
1 stop19h 40mMultiple Airlines
Tue 9/167:55 pmSTL - BOS
2 stops37h 03mMultiple Airlines
Deal found 8/18$262
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 10/169:50 amBOS - STL
1 stop25h 47mFrontier
Sun 10/1911:32 amSTL - BOS
1 stop20h 23mFrontier
Deal found 8/20$263
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/710:13 amBOS - STL
2 stops29h 51mMultiple Airlines
Sun 9/144:00 pmSTL - BOS
1 stop16h 58mMultiple Airlines
Deal found 8/18$265
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/63:00 pmBOS - STL
1 stop19h 40mMultiple Airlines
Sat 9/137:55 pmSTL - BOS
2 stops13h 03mMultiple Airlines
Deal found 8/18$266
This Delta deal was found by Cheapflights users on 8/18. 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 9/174:51 pmPVD - STL
1 stop4h 43mDelta
Mon 9/226:00 pmSTL - PVD
1 stop4h 19mDelta
Deal found 8/18$291

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 August 22, 2025.
Use the filters below to find and compare flights from Rhode Island to St. Louis that are best for you.

Fly from

Rhode Island

Fly to

St. Louis

Route

Depart

Return

Price

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 10/29

3:00 pm-10:02 am

1 stop20h 02m

Lambert-St Louis

Fri 10/31

2:12 pm-8:28 am

1 stop17h 16m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 10/7

5:13 pm-11:05 pm

1 stop6h 52m

Lambert-St Louis

Wed 10/8

6:00 am-3:04 pm

1 stop8h 04m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 10/28

1:45 pm-8:26 pm

1 stop7h 41m

Lambert-St Louis

Tue 11/4

6:00 am-3:03 pm

1 stop8h 03m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 9/17

5:00 am-9:26 am

1 stop5h 26m

Lambert-St Louis

Wed 9/24

6:10 am-3:06 pm

1 stop7h 56m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 10/14

6:00 am-9:46 am

1 stop4h 46m

Lambert-St Louis

Tue 10/21

6:00 am-3:04 pm

1 stop8h 04m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 9/16

10:30 am-2:44 pm

1 stop5h 14m

Lambert-St Louis

Wed 9/17

6:10 am-3:06 pm

1 stop7h 56m

$252

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 10/8

6:11 am-10:02 am

1 stop28h 51m

Lambert-St Louis

Sun 10/12

10:57 am-11:59 pm

1 stop12h 02m

$254

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 10/17

9:18 am-5:10 pm

1 stop8h 52m

Lambert-St Louis

Sun 10/19

10:57 am-11:26 am

1 stop23h 29m

$254

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 12/11

6:00 am-5:31 pm

1 stop12h 31m

Lambert-St Louis

Sun 12/14

12:20 pm-12:40 am

1 stop11h 20m

$254

ProvidenceSt. Louis

PVD - STL

PVDSTL

Providence-TFGreen

Wed 9/17

4:51 pm-8:34 pm

1 stop4h 43m

Lambert-St Louis

Mon 9/22

6:00 pm-11:19 pm

1 stop4h 19m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 27 results
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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.
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

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 $311). Flying from Rhode Island to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from RI to STL?

Find hourly flight availability from Rhode Island to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Rhode Island to St. Louis as you normally would.

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.
  • What airport do you fly into for flights to St. Louis from Rhode Island?

    For a flight from Rhode Island to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How long is the flight from Rhode Island to St. Louis?

    Airlines like American Airlines and Delta fly from Rhode Island to St. Louis in about 4h 43m. The time it takes to get you to your destination can typically vary by up to 2h 09m. There are 1017 mi between Rhode Island and St. Louis. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Rhode Island to St. Louis one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $94. However, be on the lookout for offers from Spirit Airlines and Delta, as they are both options that can get you from Rhode Island to St. Louis for a low price.

  • Can I find deals for flights from Rhode Island to St. Louis that include hotel bookings?

    Yes. In addition to deals on Rhode Island to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rhode Island to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rhode Island to St. Louis.

  • Can I find deals for business class flights from Rhode Island to St. Louis?

    Yes. Cheapflights offers flight deals from Rhode Island to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $311). Flying from Rhode Island to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Rhode Island to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

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 August 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$284Average$386FlexibilityNo cancel feeOn-time71%
DeltaCheapest$284Average$386FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$296Average$389FlexibilityNo cancel feeOn-time63%

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