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$36+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — STL
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Lambert-St Louis are usually found in June or July, booked 51 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap 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 April 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$297
(American Airlines)

One-way from

$36
(Vakatrip)

Popular in

February

Cheapest in

June

Average price

$374

Good round-trip deal

$344 or less

Good one-way deal

$191 or less
Provider with most accurate pricing for Raleigh-Durham-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Raleigh-Durham-Lambert-St Louis flights.
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From Raleigh-Durham to Lambert-St Louis
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One-way flight from Raleigh-Durham to Lambert-St Louis
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Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Raleigh-Durham to Lambert-St Louis.
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Price to beat on a one-way flight from Raleigh-Durham to Lambert-St Louis.
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Find 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 April 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 7/911:18 amRDU - STL
1 stop5h 42mAmerican Airlines
Sun 7/135:20 amSTL - RDU
1 stop4h 08mAmerican Airlines
Deal found 4/28$297
This Delta deal was found by Cheapflights users on 4/28. 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.
Tue 5/205:55 amRDU - STL
1 stop4h 40mDelta
Tue 5/205:45 pmSTL - RDU
1 stop4h 16mDelta
Deal found 4/28$303
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/228:20 amRDU - STL
Nonstop2h 10mSouthwest
Sat 5/245:25 pmSTL - RDU
Nonstop1h 50mSouthwest
Deal found 4/28$312
This CheapOair deal was found by Cheapflights users on 4/28. 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 5/112:17 pmRDU - STL
1 stop12h 49mFrontier
Sat 5/35:45 pmSTL - RDU
1 stop14h 28mFrontier
Deal found 4/28$321
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/266:15 amRDU - STL
1 stop5h 30mUnited Airlines
Mon 6/26:30 amSTL - RDU
2 stops6h 38mUnited Airlines
Deal found 4/28$346
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/232:22 pmRDU - STL
2 stops19h 53mMultiple Airlines
Sun 5/2510:10 amSTL - RDU
1 stop22h 02mMultiple Airlines
Deal found 4/29$394
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/75:05 pmRDU - STL
2 stops15h 44mSpirit Airlines
Sun 8/107:37 pmSTL - RDU
2 stops18h 21mSpirit Airlines
Deal found 4/29$401

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 April 29, 2025.
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

Wed 7/9

11:18 am-4:00 pm

1 stop5h 42m

Lambert-St Louis

Sun 7/13

5:20 am-10:28 am

1 stop4h 08m

$297

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Tue 5/20

5:55 am-9:35 am

1 stop4h 40m

Lambert-St Louis

Tue 5/20

5:45 pm-11:01 pm

1 stop4h 16m

$303

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Thu 5/22

8:20 am-9:30 am

Nonstop2h 10m

Lambert-St Louis

Sat 5/24

5:25 pm-8:15 pm

Nonstop1h 50m

$312

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 7/11

12:51 pm-11:47 pm

1 stop11h 56m

Lambert-St Louis

Sun 7/13

2:27 pm-6:35 am

1 stop15h 08m

$332

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Mon 5/26

6:15 am-10:45 am

1 stop5h 30m

Lambert-St Louis

Mon 6/2

6:30 am-2:08 pm

2 stops6h 38m

$346

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 5/23

2:22 pm-9:15 am

2 stops19h 53m

Lambert-St Louis

Sun 5/25

10:10 am-9:12 am

1 stop22h 02m

$394

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 5/2

8:47 pm-12:06 am

1 stop28h 19m

$36

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 5/30

10:17 am-9:15 am

1 stop23h 58m

$104

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Wed 5/28

12:50 pm-6:07 pm

1 stop6h 17m

$105

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 6/6

6:05 pm-11:25 am

1 stop18h 20m

$123

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 14 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*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 April 25, 2025.

Booking 51 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, August is the cheapest month in which you can book a flight from Raleigh to St. Louis (average of $311). Flying from Raleigh 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 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 April 29, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 21% on flights from Raleigh to St. Louis by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Raleigh to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Raleigh to St. Louis. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Raleigh to St. Louis flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 29, 2025.
Read through reviews of airlines operating flights from Raleigh to St. Louis, such as Southwest, Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,929 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Sun Country Air
6.9
Okay
346 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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.

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

    Booking a flight from Raleigh-Durham (RDU) to Lambert-St Louis (STL) is your only option if you wish to fly from Raleigh to St. Louis. On a typical day, there is 1 flight from Raleigh-Durham to Lambert-St Louis, all of which are around 2h 05m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Raleigh-Durham to St. Louis.

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

    Within the past month, 20 users have taken a look at flights from Raleigh-Durham to Lambert-St Louis.

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

    According to our current data, American Airlines ($297), Delta ($303), and Southwest ($312) offers the cheapest pricing from Raleigh to St. Louis. American Airlines is priced at 15% 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 ($36), Spirit Airlines ($104), and American Airlines ($105).

  • 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 $312, our data indicates the cheapest price to be $134. The most popular route (Raleigh-Durham - Lambert-St Louis), is priced around $293.

  • 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, August is the cheapest month in which you can book a flight from Raleigh to St. Louis (average of $311). Flying from Raleigh 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 Raleigh?

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

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Alternative routes for Raleigh to St. Louis

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Top 5 airlines flying from Raleigh to St. Louis

Discover the top 5 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$168FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$176Average$372FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$231Average$342FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$365FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$296Average$364FlexibilityNo cancel feeOn-time69%

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