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Cheap flights from Raleigh to St. Louis from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Raleigh to St. Louis departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Raleigh to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:54 pm - 6:51 am
RDU
-
STL
12h 57m
1 stop
Frontier Logo
3:49 pm - 1:58 pm
STL
-
RDU
21h 09m
1 stop
$131Frontier
Fri, Feb 20 - Mon, Feb 23
Frontier Logo
2:53 pm - 10:27 pm
RDU
-
STL
8h 34m
1 stop
Frontier Logo
8:17 pm - 12:10 am
STL
-
RDU
26h 53m
1 stop
$132Frontier
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
5:54 pm - 10:27 pm
RDU
-
STL
5h 33m
1 stop
Frontier Logo
3:49 pm - 4:59 pm
STL
-
RDU
24h 10m
1 stop
$139Frontier
Tue, Feb 24 - Tue, Mar 3
Frontier Logo
4:04 pm - 11:59 pm
RDU
-
STL
8h 55m
1 stop
Frontier Logo
12:36 pm - 8:30 pm
STL
-
RDU
6h 54m
1 stop
$148Frontier
Mon, Feb 23 - Sat, Feb 28
Frontier Logo
6:10 am - 6:51 am
RDU
-
STL
25h 41m
1 stop
Frontier Logo
7:52 am - 9:43 am
STL
-
RDU
24h 51m
1 stop
$152Frontier
Sun, Mar 1 - Sun, Mar 8
Frontier Logo
2:53 pm - 10:27 pm
RDU
-
STL
8h 34m
1 stop
Frontier Logo
9:41 am - 8:30 pm
STL
-
RDU
9h 49m
1 stop
$154Frontier
Wed, Feb 18 - Sat, Feb 21
Multiple Airlines Logo
6:54 pm - 6:51 am
RDU
-
STL
12h 57m
1 stop
Multiple Airlines Logo
8:22 pm - 5:11 pm
STL
-
RDU
19h 49m
2 stops
$155Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Multiple Airlines Logo
6:08 pm - 6:51 am
RDU
-
STL
13h 43m
2 stops
Multiple Airlines Logo
8:17 pm - 12:10 am
STL
-
RDU
26h 53m
1 stop
$160Multiple Airlines
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
6:20 am - 6:51 am
RDU
-
STL
25h 31m
1 stop
Frontier Logo
8:17 pm - 5:00 pm
STL
-
RDU
19h 43m
2 stops
$161Frontier
Tue, Feb 17 - Sat, Feb 21
Frontier Logo
6:43 pm - 9:49 am
RDU
-
STL
16h 06m
1 stop
Frontier Logo
4:51 pm - 9:53 am
STL
-
RDU
16h 02m
1 stop
$171Frontier
Tue, Mar 24 - Wed, Mar 25

Frontier flights from Raleigh to St. Louis

Our best Frontier deals on Raleigh to St. Louis flight tickets
Frontier
Feb 17
RDU6:20 amRaleigh-Durham
25h 31m
1 stop
STL6:51 amLambert-St Louis
Feb 18
STL8:17 pmLambert-St Louis
20h 38m
1 stop
RDU5:55 pmRaleigh-Durham
$128
Frontier
Feb 20
RDU6:54 pmRaleigh-Durham
12h 57m
1 stop
STL6:51 amLambert-St Louis
Feb 23
STL3:49 pmLambert-St Louis
21h 09m
1 stop
RDU1:58 pmRaleigh-Durham
$131
Frontier
Feb 24
RDU2:53 pmRaleigh-Durham
8h 34m
1 stop
STL10:27 pmLambert-St Louis
Feb 28
STL8:17 pmLambert-St Louis
26h 53m
1 stop
RDU12:10 amRaleigh-Durham
$132

United Airlines flights from Raleigh to St. Louis

Our best United Airlines deals on Raleigh to St. Louis flight tickets
United Airlines
Feb 6
RDU10:00 amRaleigh-Durham
5h 30m
1 stop
STL2:30 pmLambert-St Louis
Feb 8
STL12:44 pmLambert-St Louis
5h 08m
1 stop
RDU6:52 pmRaleigh-Durham
$351
United Airlines
Feb 4
RDU10:30 amRaleigh-Durham
8h 13m
2 stops
STL5:43 pmLambert-St Louis
Feb 6
STL3:11 pmLambert-St Louis
5h 07m
1 stop
RDU9:18 pmRaleigh-Durham
$356
United Airlines
Feb 6
RDU6:18 amRaleigh-Durham
7h 11m
2 stops
STL12:29 pmLambert-St Louis
Feb 7
STL8:05 amLambert-St Louis
8h 52m
2 stops
RDU5:57 pmRaleigh-Durham
$361

momondo Fare Finder

 
Customize your flight search to find flights from Raleigh 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, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Raleigh to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 2/20

6:54 pm-6:51 am

1 stop12h 57m

Lambert-St Louis

Mon 2/23

3:49 pm-1:58 pm

1 stop21h 09m

$131

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 2/24

2:53 pm-10:27 pm

1 stop8h 34m

Lambert-St Louis

Sat 2/28

8:17 pm-12:10 am

1 stop26h 53m

$132

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 2/24

5:54 pm-10:27 pm

1 stop5h 33m

Lambert-St Louis

Tue 3/3

3:49 pm-4:59 pm

1 stop24h 10m

$139

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Mon 2/23

4:04 pm-11:59 pm

1 stop8h 55m

Lambert-St Louis

Sat 2/28

12:36 pm-8:30 pm

1 stop6h 54m

$148

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Sun 3/1

6:10 am-6:51 am

1 stop25h 41m

Lambert-St Louis

Sun 3/8

7:52 am-9:43 am

1 stop24h 51m

$152

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Wed 2/18

2:53 pm-10:27 pm

1 stop8h 34m

Lambert-St Louis

Sat 2/21

9:41 am-8:30 pm

1 stop9h 49m

$154

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 2/20

6:54 pm-6:51 am

1 stop12h 57m

Lambert-St Louis

Mon 2/23

8:22 pm-5:11 pm

2 stops19h 49m

$155

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 2/24

6:08 pm-6:51 am

2 stops13h 43m

Lambert-St Louis

Sat 2/28

8:17 pm-12:10 am

1 stop26h 53m

$160

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 2/17

6:20 am-6:51 am

1 stop25h 31m

Lambert-St Louis

Sat 2/21

8:17 pm-5:00 pm

2 stops19h 43m

$161

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 3/24

6:43 pm-9:49 am

1 stop16h 06m

Lambert-St Louis

Wed 3/25

4:51 pm-9:53 am

1 stop16h 02m

$171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Raleigh 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

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

In general, October is the cheapest month to fly from Raleigh to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $350. The month of January is another great option to travel to St. Louis, with average flight prices from Raleigh averaging around $354.

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 $359. 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 $426. 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 Raleigh in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $348 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $444 per ticket.

What is the cheapest Raleigh-Durham to Lambert-St Louis flight route?

Fly from Raleigh-Durham to Lambert-St Louis for the best Raleigh-Durham - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Raleigh when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $391 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Raleigh for as low as $312 on momondo.

What cabin class options are available on Raleigh-Durham to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Raleigh-Durham to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Raleigh to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Raleigh to St. Louis.

How have Raleigh to St. Louis flight prices changed over time?

As of February 2026, prices for Raleigh to St. Louis flights are approximately 24% more expensive when compared to flights at the same time last year.

When to book flights from Raleigh to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Raleigh to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Raleigh to St. Louis (RDU to STL) flight deals and tips

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

Best Price Found

$168

Fastest flight time

2h 00m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Raleigh in the past 72 hours is $168. The best round-trip flight deal from Raleigh to St. Louis found on momondo in the last 72 hours is $353.
The fastest flight from Raleigh to St. Louis takes 2h 00m
Direct flights go from Raleigh to St. Louis every day.
There is 1 airport in St. Louis. From Raleigh there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • How far is Raleigh-Durham to Lambert-St Louis by plane?

    Lambert-St Louis is 665.0 mi away from Raleigh-Durham. 2h 00m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Raleigh-Durham Airport to Lambert-St Louis Airport?

    Prices for flights from Raleigh-Durham Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Raleigh-Durham Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Raleigh-Durham Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Raleigh to St. Louis?

  • What is the most popular airline from Raleigh to St. Louis?

Best airlines flying from Raleigh to St. Louis

Compare and see reviews for airlines that fly from Raleigh to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
DeltaPriceFrom $226Free CancellationRating
7.9
8,132 reviews
Search Delta flights
American AirlinesPriceFrom $248Free CancellationRating
7.2
11,212 reviews
Search American Airlines flights
SouthwestPriceFrom $271Free CancellationRating
8.0
4,271 reviews
Search Southwest flights

  • Southwest Flights From Raleigh to St. Louis

    Across 4 Southwest flights from Raleigh to St. Louis this week, the average price was $412, with the best Southwest deals starting from $271 round-trip. 4,272 users have rated Southwest on momondo, with an average score of 8.0/10.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

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

It is quick and easy to find Raleigh to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Flights from Raleigh 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 Raleigh to St. Louis?

momondo helps you find the best flight between Raleigh 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 Raleigh to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Raleigh to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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