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St. Louis

$59+ Cheap flights from Raleigh to St. Louis (RDU - 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — STL
feb. 25 — mar. 41
mié. 2/25
mié. 3/4
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Lambert-St Louis are usually found in October or January, booked 67 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Raleigh to St. Louis

Cheapest flights from Raleigh to St. Louis
Explore the most affordable flight options available from Raleigh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mar. 2/249:25 pm
RDU
-
STL
1 stop26h 02m
Frontier
mar. 3/33:49 pm
STL
-
RDU
1 stop21h 09m
Frontier
Deal found 1/25$131
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
dom. 2/16:10 am
RDU
-
STL
1 stop25h 41m
Frontier
lun. 2/28:22 pm
STL
-
RDU
1 stop26h 29m
Frontier
Deal found 1/24$133
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
vie. 2/136:10 am
RDU
-
STL
1 stop25h 41m
Frontier
mar. 2/173:49 pm
STL
-
RDU
1 stop21h 09m
Frontier
Deal found 1/25$134
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
lun. 2/23:44 pm
RDU
-
STL
1 stop8h 49m
Frontier
vie. 2/68:22 pm
STL
-
RDU
1 stop26h 34m
Frontier
Deal found 1/24$142
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mié. 2/42:15 pm
RDU
-
STL
1 stop10h 18m
Frontier
mar. 2/103:49 pm
STL
-
RDU
1 stop21h 09m
Frontier
Deal found 1/25$154
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
vie. 2/204:19 pm
RDU
-
STL
1 stop9h 08m
Frontier
sáb. 2/219:41 am
STL
-
RDU
1 stop9h 49m
Frontier
Deal found 1/26$158
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mar. 2/246:08 pm
RDU
-
STL
2 stops13h 43m
Multiple Airlines
mar. 3/33:49 pm
STL
-
RDU
1 stop21h 09m
Multiple Airlines
Deal found 1/25$159
This Orbitz deal was found by Cheapflights users on 1/24. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/96:00 am
RDU
-
STL
1 stop5h 30m
Frontier
lun. 4/138:16 pm
STL
-
RDU
1 stop19h 49m
Frontier
Deal found 1/24$160
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mar. 2/37:10 am
RDU
-
STL
1 stop24h 41m
Frontier
lun. 2/98:22 pm
STL
-
RDU
2 stops16h 36m
Frontier
Deal found 1/25$175
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
sáb. 2/143:35 pm
RDU
-
STL
1 stop9h 24m
Frontier
mar. 2/173:49 pm
STL
-
RDU
1 stop27h 41m
Frontier
Deal found 1/25$183
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
mar. 2/246:25 am
RDU
-
STL
1 stop25h 26m
Frontier
jue. 2/2610:11 pm
STL
-
RDU
2 stops18h 48m
Frontier
Deal found 1/26$184

Find flight deals from Raleigh to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 26, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$59
(Trip.com)

Popular in

September

Cheapest in

October

Average price

$372

Good round-trip deal

$351 or less

Good one-way deal

$223 or less
Provider with most accurate pricing for Raleigh-Durham-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Lambert-St Louis flights.
Search Deals
From Raleigh-Durham to Lambert-St Louis
Search Deals
One-way flight from Raleigh-Durham to Lambert-St Louis
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Raleigh-Durham to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Raleigh-Durham to Lambert-St Louis.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated enero 26, 2026.
Use the filters below to find and compare flights from Raleigh to St. Louis that are best for you.

Fly from

Raleigh

Fly to

St. Louis

Route

Depart

Return

Price

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 2/14

3:35 pm-11:59 pm

1 stop9h 24m

Lambert-St Louis

mar. 2/17

3:49 pm-8:30 pm

1 stop27h 41m

$183

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 2/7

8:16 pm-8:04 am

1 stop12h 48m

Lambert-St Louis

sáb. 2/14

9:41 am-8:30 pm

1 stop9h 49m

$242

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

jue. 2/12

6:45 pm-6:51 am

1 stop13h 06m

Lambert-St Louis

dom. 2/15

3:49 pm-8:37 am

1 stop15h 48m

$260

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

vie. 3/6

6:43 pm-9:49 am

1 stop16h 06m

Lambert-St Louis

lun. 3/9

8:12 pm-3:17 pm

2 stops18h 05m

$274

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 3/28

5:38 am-9:46 am

1 stop5h 08m

Lambert-St Louis

lun. 3/30

5:59 pm-11:32 pm

1 stop4h 33m

$279

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 1/31

8:16 pm-8:24 am

1 stop13h 08m

Lambert-St Louis

dom. 2/1

5:42 pm-9:01 pm

1 stop26h 19m

$287

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

lun. 3/16

6:00 am-1:34 pm

1 stop8h 34m

Lambert-St Louis

vie. 3/20

12:16 pm-12:11 am

1 stop10h 55m

$289

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 2/7

8:16 pm-8:04 am

1 stop12h 48m

Lambert-St Louis

dom. 2/15

3:49 pm-10:14 pm

1 stop5h 25m

$291

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

mié. 4/8

3:10 pm-11:25 pm

1 stop9h 15m

Lambert-St Louis

sáb. 4/11

8:36 am-9:32 am

2 stops23h 56m

$299

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

sáb. 4/4

5:00 am-8:35 am

1 stop4h 35m

Lambert-St Louis

dom. 4/5

7:05 am-2:04 pm

1 stop5h 59m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 22 results
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Compare providers for flights from Raleigh to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Raleigh to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Raleigh-St. Louis flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Raleigh-St. Louis flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Raleigh-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Raleigh-St. Louis flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Raleigh-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Raleigh to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Raleigh 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 Raleigh to St. Louis

How far ahead should I book a flight from Raleigh to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to St. Louis. Price data was last updated on January 23, 2026.

Booking 67 days in advance of your planned departure date is, on average, the best time to get cheap flights from Raleigh to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Raleigh to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Raleigh to St. Louis (average of $182). Flying from Raleigh to St. Louis in March is currently the most expensive (average of $249). 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 RDU to STL?

Find hourly flight availability from Raleigh 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 enero 26, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 22% on flights from Raleigh to St. Louis by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from Raleigh to St. Louis?

The best insider tips for Raleigh to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Raleigh to St. Louis trip
Our travel experts
John Walton

John Walton

Expert on RDU

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated enero 26, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Raleigh to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,111 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,189 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,058 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Raleigh to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Raleigh to St. Louis flight route?

    Within the past month, 28 users have taken a look at flights from Raleigh-Durham to Lambert-St Louis.

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

    A quick flight from Raleigh to St. Louis can take about 9h 24m. Frontier provides one of the quickest options available for as low as $183. The distance between Raleigh and St. Louis is about 666 mi.

  • What are the cheapest airlines flying from Raleigh to St. Louis round-trip?

    According to our current data, Frontier ($149), Delta ($226), and American Airlines ($248) offers the cheapest pricing from Raleigh to St. Louis. Frontier is priced at 61% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from Raleigh to St. Louis are Frontier ($55), Delta ($122), and American Airlines ($128).

  • What are the cheapest flights from Raleigh to St. Louis?

    Looking for the cheapest flight from Raleigh to St. Louis? While on average our users pay $335, our data indicates the cheapest price to be $116. The most popular route (Raleigh-Durham - Lambert-St Louis), is priced around $149.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Raleigh 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 Raleigh to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Raleigh to St. Louis (average of $182). Flying from Raleigh to St. Louis in March is currently the most expensive (average of $249). 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
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 4 airlines flying from Raleigh to St. Louis

Discover the top 4 airlines that operate flights from Raleigh 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 enero 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$247FlexibilityNo cancel feeOn-time62%
DeltaCheapest$226Average$384FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$248Average$384FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$271Average$412FlexibilityNo cancel feeOn-time63%

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