What is the cheapest airline that flies from Rhode Island to Lambert-St Louis?

Delta, American Airlines, and Frontier are the most popular carriers operating from Rhode Island to Lambert-St Louis

How many flights depart from Rhode Island to St. Louis on average per week?

As of August 2025, 33 flights take off from Rhode Island and land in St. Louis each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

What airlines fly to St. Louis?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to St. Louis from Rhode Island according to our data. American Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Rhode Island to Lambert-St Louis Airport?

Prices for flights from Rhode Island to Lambert-St Louis Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Rhode Island to Lambert-St Louis Airport?

The number of operators available for flights from Rhode Island to Lambert-St Louis Airport is 6 as of August 2025.

How old do you have to be to fly from Rhode Island to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rhode Island to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$139 Cheap Flights from Rhode Island to St. Louis in 2025

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Find the cheapest flights from Rhode Island to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:00 pm - 9:40 amBOS-STL

19h 40m1 stop

1:57 pm - 1:48 pmSTL-BOS

22h 51m1 stop

$254

Find Deal

Sat, Sep 6 - Mon, Sep 8

3:00 pm - 9:40 amBOS-STL

19h 40m1 stop

7:55 pm - 1:48 pmSTL-BOS

40h 53m2 stops

$256

Find Deal

Sat, Sep 6 - Fri, Sep 12

6:50 am - 9:04 amBOS-STL

3h 14mnonstop

6:00 am - 3:03 pmSTL-BOS

8h 03m1 stop

$257American Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 4

12:22 pm - 10:37 amBOS-STL

23h 15m2 stops

11:32 am - 8:55 amSTL-BOS

20h 23m1 stop

$264Frontier

Find Deal

Thu, Oct 16 - Sun, Oct 19

12:00 pm - 4:16 pmBOS-STL

5h 16m1 stop

6:00 am - 3:03 pmSTL-BOS

8h 03m1 stop

$267American Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 4

10:53 am - 9:06 amBOS-STL

23h 13m2 stops

4:00 pm - 9:58 amSTL-BOS

16h 58m1 stop

$271Frontier

Find Deal

Fri, Sep 12 - Sun, Sep 14

6:05 am - 10:26 amPVD-STL

5h 21m1 stop

5:20 pm - 11:58 pmSTL-PVD

5h 38m1 stop

$305Delta

Find Deal

Thu, Oct 9 - Sat, Oct 11

6:30 am - 1:32 pmBOS-STL

8h 02m1 stop

2:30 pm - 10:34 pmSTL-BOS

7h 04m1 stop

$307Spirit Airlines

Find Deal

Mon, Aug 25 - Sun, Aug 31

12:20 pm - 9:40 amBOS-STL

22h 20m2 stops

10:57 am - 1:44 pmSTL-BOS

25h 47m2 stops

$310Spirit Airlines

Find Deal

Wed, Oct 1 - Sun, Oct 5

7:01 pm - 11:24 pmPVD-STL

5h 23m1 stop

5:11 pm - 11:59 pmSTL-PVD

5h 48m1 stop

$346Delta

Find Deal

Mon, Sep 22 - Sun, Oct 5

Spirit Airlines flights from Rhode Island to St. Louis

Our best Spirit Airlines deals on Rhode Island to St. Louis flight tickets

Spirit Airlines

Aug 25

BOS6:30 amBoston Logan Intl

8h 02m

1 stop

STL1:32 pmLambert-St Louis

Aug 31

STL2:30 pmLambert-St Louis

7h 04m

1 stop

BOS10:34 pmBoston Logan Intl

$297

Find similar

Spirit Airlines

Aug 25

BOS6:30 amBoston Logan Intl

8h 02m

1 stop

STL1:32 pmLambert-St Louis

Aug 31

STL2:30 pmLambert-St Louis

7h 04m

1 stop

BOS10:34 pmBoston Logan Intl

$307

Find similar

Spirit Airlines

Oct 1

BOS12:20 pmBoston Logan Intl

22h 20m

2 stops

STL9:40 amLambert-St Louis

Oct 5

STL10:57 amLambert-St Louis

25h 47m

2 stops

BOS1:44 pmBoston Logan Intl

$310

Find similar

American Airlines flights from Rhode Island to St. Louis

Our best American Airlines deals on Rhode Island to St. Louis flight tickets

American Airlines

Oct 28

BOS6:50 amBoston Logan Intl

3h 14m

STL9:04 amLambert-St Louis

Nov 4

STL6:00 amLambert-St Louis

8h 03m

1 stop

BOS3:03 pmBoston Logan Intl

$257

Find similar

American Airlines

Oct 28

BOS12:00 pmBoston Logan Intl

5h 16m

1 stop

STL4:16 pmLambert-St Louis

Nov 4

STL6:00 amLambert-St Louis

8h 03m

1 stop

BOS3:03 pmBoston Logan Intl

$267

Find similar

American Airlines

Sep 10

BOS7:00 amBoston Logan Intl

3h 12m

STL9:12 amLambert-St Louis

Sep 13

STL9:56 amLambert-St Louis

10h 04m

1 stop

BOS9:00 pmBoston Logan Intl

$270

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sat 9/6

3:00 pm-9:40 am

1 stop19h 40m

Lambert-St Louis

Mon 9/8

1:57 pm-1:48 pm

1 stop22h 51m

$254

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sat 9/6

3:00 pm-9:40 am

1 stop19h 40m

Lambert-St Louis

Fri 9/12

7:55 pm-1:48 pm

2 stops40h 53m

$256

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 10/28

6:50 am-9:04 am

Nonstop3h 14m

Lambert-St Louis

Tue 11/4

6:00 am-3:03 pm

1 stop8h 03m

$257

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 10/16

12:22 pm-10:37 am

2 stops23h 15m

Lambert-St Louis

Sun 10/19

11:32 am-8:55 am

1 stop20h 23m

$264

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 10/28

12:00 pm-4:16 pm

1 stop5h 16m

Lambert-St Louis

Tue 11/4

6:00 am-3:03 pm

1 stop8h 03m

$267

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 9/12

10:53 am-9:06 am

2 stops23h 13m

Lambert-St Louis

Sun 9/14

4:00 pm-9:58 am

1 stop16h 58m

$271

ProvidenceSt. Louis

PVD - STL

PVDSTL

Providence-TFGreen

Thu 10/9

6:05 am-10:26 am

1 stop5h 21m

Lambert-St Louis

Sat 10/11

5:20 pm-11:58 pm

1 stop5h 38m

$305

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Mon 8/25

6:30 am-1:32 pm

1 stop8h 02m

Lambert-St Louis

Sun 8/31

2:30 pm-10:34 pm

1 stop7h 04m

$307

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 10/1

12:20 pm-9:40 am

2 stops22h 20m

Lambert-St Louis

Sun 10/5

10:57 am-1:44 pm

2 stops25h 47m

$310

ProvidenceSt. Louis

PVD - STL

PVDSTL

Providence-TFGreen

Mon 9/22

7:01 pm-11:24 pm

1 stop5h 23m

Lambert-St Louis

Sun 10/5

5:11 pm-11:59 pm

1 stop5h 48m

$346

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Rhode Island to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from Rhode Island to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $382. The month of September is another great option to travel to St. Louis, with average flight prices from Rhode Island averaging around $398.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $420. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $504. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Rhode Island in the evening is the least expensive time of day to depart. momondo users have found prices as low as $429 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $453 per ticket.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Rhode Island when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Rhode Island for as low as $397 on momondo.

Cheap Rhode Island to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rhode Island to St. Louis

Best Price Found	$139
Fastest flight time	2h 55m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Rhode Island in the past 72 hours is $139. The best round-trip flight deal from Rhode Island to St. Louis found on momondo in the last 72 hours is $254.

The fastest flight from Rhode Island to St. Louis takes 2h 55m

Direct flights go from Rhode Island to St. Louis every day.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Rhode Island to Lambert-St Louis Airport?
Prices for flights from Rhode Island to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Rhode Island to Lambert-St Louis Airport?
The number of operators available for flights from Rhode Island to Lambert-St Louis Airport is 6 as of August 2025.
How old do you have to be to fly from Rhode Island to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rhode Island to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Rhode Island to St. Louis

Compare and see reviews for airlines that fly from Rhode Island to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $284	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
American Airlines	PriceFrom $296	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $296	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights

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Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Wentzville

Collinsville

Alton

St. Peters

Farmington

Festus

Glencoe

Eureka

Clayton

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Rhode Island to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Rhode Island to St. Louis for you.

Can I find flights from Rhode Island to St. Louis with flexible booking policies on momondo?

Flights from Rhode Island to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Rhode Island to St. Louis?

momondo helps you find the best flight between Rhode Island and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Rhode Island to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Rhode Island are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.