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$66+ Cheap flights from St. Louis to Raleigh (STL - RDU)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — RDU
Apr 26 — May 31
Sun 4/26
Sun 5/3
1 adult, Economy
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Find cheap flights from St. Louis to Raleigh with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Raleigh-Durham are usually found in October or January, booked 58 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from St. Louis to Raleigh

Cheapest flights from St. Louis to Raleigh
Explore the most affordable flight options available from St. Louis to Raleigh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.

This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:23 pm
STL
-
RDU
1 stop11h 00m
Frontier
Thu 4/168:43 pm
RDU
-
STL
1 stop12h 11m
Frontier
Deal found 3/25$140
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:59 pm
STL
-
RDU
1 stop16h 00m
Frontier
Wed 4/156:55 pm
RDU
-
STL
1 stop25h 26m
Frontier
Deal found 3/22$151
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Wed 5/65:27 pm
STL
-
RDU
1 stop6h 06m
Frontier
Tue 5/1212:54 pm
RDU
-
STL
1 stop21h 01m
Frontier
Deal found 3/25$158
This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:27 pm
STL
-
RDU
1 stop6h 06m
Frontier
Sun 5/102:32 pm
RDU
-
STL
1 stop10h 49m
Frontier
Deal found 3/25$160
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Tue 5/266:33 pm
STL
-
RDU
1 stop12h 31m
Frontier
Sun 5/3112:54 pm
RDU
-
STL
1 stop21h 01m
Frontier
Deal found 3/25$164
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:59 pm
STL
-
RDU
1 stop16h 00m
Frontier
Fri 4/1712:57 pm
RDU
-
STL
1 stop11h 22m
Frontier
Deal found 3/25$171
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Thu 6/46:33 pm
STL
-
RDU
1 stop4h 51m
Frontier
Tue 6/912:54 pm
RDU
-
STL
1 stop5h 36m
Frontier
Deal found 3/26$177
This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:27 pm
STL
-
RDU
1 stop6h 06m
Frontier
Fri 5/297:52 pm
RDU
-
STL
1 stop5h 29m
Frontier
Deal found 3/25$180
This Frontier deal was found by Cheapflights users on 3/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:39 am
STL
-
RDU
1 stop8h 31m
Frontier
Sun 4/1912:47 pm
RDU
-
STL
1 stop11h 32m
Frontier
Deal found 3/25$181
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Tue 5/266:33 pm
STL
-
RDU
1 stop12h 31m
Frontier
Tue 6/212:54 pm
RDU
-
STL
1 stop5h 39m
Frontier
Deal found 3/25$183
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 5/88:08 pm
STL
-
RDU
2 stops10h 56m
Frontier
Tue 5/1212:54 pm
RDU
-
STL
1 stop21h 01m
Frontier
Deal found 3/25$186
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
-
RDU
1 stop10h 59m
Frontier
Sun 5/39:49 pm
RDU
-
STL
1 stop22h 43m
Frontier
Deal found 3/25$191

Find flight deals from St. Louis to Raleigh

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Raleigh (RDU). 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 March 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(Frontier)

One-way from

$66
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$423

Good round-trip deal

$419 or less

Good one-way deal

$265 or less
Provider with most accurate pricing for Lambert-St Louis-Raleigh-Durham flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Raleigh-Durham flights.
Search Deals
From Lambert-St Louis to Raleigh-Durham
Search Deals
One-way flight from Lambert-St Louis to Raleigh-Durham
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Raleigh-Durham.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Raleigh-Durham.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Raleigh 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 March 27, 2026.
Use the filters below to find and compare flights from St. Louis to Raleigh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Thu 6/4

11:00 am-6:55 pm

1 stop6h 55m

Raleigh-Durham

Tue 6/9

1:30 pm-6:20 pm

1 stop5h 50m

$253

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 4/29

1:15 pm-6:15 pm

1 stop4h 00m

Raleigh-Durham

Mon 5/4

6:10 pm-11:40 pm

1 stop6h 30m

$253

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 4/15

6:50 pm-9:40 pm

Nonstop1h 50m

Raleigh-Durham

Tue 4/21

5:00 pm-10:20 pm

1 stop6h 20m

$268

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Tue 5/26

6:50 pm-9:40 pm

Nonstop1h 50m

Raleigh-Durham

Sat 5/30

6:00 am-10:00 am

1 stop5h 00m

$269

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Mon 4/13

4:00 pm-11:10 pm

1 stop6h 10m

Raleigh-Durham

Wed 4/15

6:45 pm-8:00 pm

Nonstop2h 15m

$309
Quickest round-trip

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 5/6

10:15 am-1:05 pm

Nonstop1h 50m

Raleigh-Durham

Mon 5/18

7:45 pm-8:55 pm

Nonstop2h 10m

$311

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Fri 5/8

2:20 pm-10:35 pm

1 stop7h 15m

Raleigh-Durham

Sun 5/10

6:20 pm-11:55 pm

1 stop6h 35m

$336

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Sun 4/19

5:25 am-10:30 am

1 stop4h 05m

Raleigh-Durham

Sat 4/25

5:00 pm-6:10 pm

Nonstop2h 10m

$355
Cheapest one-way

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Mon 4/20

8:17 pm-12:54 pm

2 stops15h 37m

$111
Quickest one-way

St. LouisRaleigh

STL - RDU

STLRDU

Lambert-St Louis

Wed 4/22

10:15 am-1:05 pm

Nonstop1h 50m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Raleigh

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 St. Louis to Raleigh in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
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 St. Louis-Raleigh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Raleigh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Raleigh flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Raleigh flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-Raleigh 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 St. Louis to Raleigh

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Raleigh. Price data was last updated on March 13, 2026.

Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Raleigh. 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 St. Louis to Raleigh?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Raleigh (average of $128). Flying from St. Louis to Raleigh in March is currently the most expensive (average of $257). 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 STL to RDU?

Find hourly flight availability from St. Louis to Raleigh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2026.

One of the essential ways to save on airfare from St. Louis to Raleigh is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 19% on airfare.

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

The best insider tips for St. Louis to Raleigh 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 St. Louis to Raleigh 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 Raleigh

Get insights into the airlines that provide service to Raleigh. 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 Raleigh. Reviews last updated March 27, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andAmerican Airlines from St. Louis to Raleigh 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
4,331 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

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,331 reviews
Southwest
8.0
Very good
4,331 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

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,341 reviews
Southwest
8.0
Very good
4,331 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

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,507 reviews
Southwest
8.0
Very good
4,331 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

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,013 reviews
Southwest
8.0
Very good
4,331 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

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

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

  • What airports do I use to fly from St. Louis to Raleigh?

    Booking a flight from Lambert-St Louis (STL) to Raleigh-Durham (RDU) is your only option if you wish to fly from St. Louis to Raleigh. On a typical day, there is 1 flight from Lambert-St Louis to Raleigh-Durham, all of which are around 1h 45m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Lambert-St Louis to Raleigh.

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

    The Lambert-St Louis to Raleigh-Durham flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from St. Louis to Raleigh will take you 6h 55m. There are 666 mi between St. Louis and Raleigh.

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

    Frontier, at $134, was found to be the cheapest airline from St. Louis to Raleigh.Alternate airlines to your destination round-trip include American Airlines and Delta. Users have found that Frontier is 66% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $72. Users have also found prices from $103 and $113 on American Airlines and Delta, respectively.

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

    On average you can expect to pay $456 for a flight from St. Louis to Raleigh. The cheapest flight overall is $148 while the most popular route, (Lambert-St Louis - Raleigh-Durham) is currently priced at $203.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Raleigh (average of $128). Flying from St. Louis to Raleigh in March is currently the most expensive (average of $257). 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 Raleigh?

Book flights to Raleigh if you plan to visit one of these locations
Rocky Mount
Smithfield
Goldsboro
Garner
Danville
Cary
Selma
Henderson
Morrisville
Wilson
Pinehurst
Dunn
Chapel Hill
Wake Forest
South Hill
Holly Springs

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from St. Louis to Raleigh

Discover the top 4 airlines that operate flights from St. Louis to Raleigh. 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 March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$200FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$218Average$384FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$384FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$257Average$412FlexibilityNo cancel feeOn-time63%

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