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$66+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — STL
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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The best prices from Raleigh-Durham to Lambert-St Louis are usually found in June or July, booked 77 days in advance, depart on a Saturday or Tuesday and return on a Monday

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 January 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(CheapOair)

One-way from

$66
(FlightHub)

Popular in

March

Cheapest in

June

Average price

$364
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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High demand for flights, 6% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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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 January 20, 2025.

This CheapOair deal was found by Cheapflights users on 1/20. 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.
Sat 2/86:37 pmRDU - STL
1 stop5h 54mFrontier
Mon 2/107:09 pmSTL - RDU
1 stop27h 09mFrontier
Deal found 1/20$140
This Booking.com deal was found by Cheapflights users on 1/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/149:34 pmRDU - STL
1 stop12h 30mMultiple Airlines
Mon 3/175:24 pmSTL - RDU
1 stop19h 46mMultiple Airlines
Deal found 1/19$208
This CheapOair deal was found by Cheapflights users on 1/18. 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.
Fri 3/149:34 pmRDU - STL
1 stop12h 30mSpirit Airlines
Sun 3/165:38 pmSTL - RDU
1 stop25h 51mSpirit Airlines
Deal found 1/18$316
This Southwest deal was found by Cheapflights users on 1/19. 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 2/137:25 amRDU - STL
Nonstop2h 25mSouthwest
Mon 2/178:10 pmSTL - RDU
Nonstop1h 45mSouthwest
Deal found 1/19$337
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 3/56:00 amRDU - STL
2 stops9h 36mUnited Airlines
Mon 3/103:30 pmSTL - RDU
1 stop4h 38mUnited Airlines
Deal found 1/19$358
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Sat 2/2210:10 amRDU - STL
1 stop8h 50mAmerican Airlines
Tue 2/257:30 amSTL - RDU
1 stop3h 26mAmerican Airlines
Deal found 1/20$366
This Delta deal was found by Cheapflights users on 1/18. 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.
Fri 1/319:51 amRDU - STL
1 stop6h 53mDelta
Sun 2/25:00 pmSTL - RDU
1 stop4h 44mDelta
Deal found 1/18$385
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/145:27 amRDU - STL
2 stops19h 32mAlaska Airlines
Sun 5/181:58 pmSTL - RDU
2 stops14h 43mAlaska Airlines
Deal found 1/19$1,079

Find flights from Raleigh to St. Louis within your budget

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Sat 2/8

6:37 pm-11:31 pm

1 stop5h 54m

Lambert-St Louis

Mon 2/10

7:09 pm-11:18 pm

1 stop27h 09m

$140

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 3/14

9:34 pm-9:04 am

1 stop12h 30m

Lambert-St Louis

Mon 3/17

5:24 pm-2:10 pm

1 stop19h 46m

$208

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 3/14

9:34 pm-9:04 am

1 stop12h 30m

Lambert-St Louis

Sun 3/16

5:38 pm-8:29 pm

1 stop25h 51m

$316

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Thu 2/13

7:25 am-8:50 am

Nonstop2h 25m

Lambert-St Louis

Mon 2/17

8:10 pm-10:55 pm

Nonstop1h 45m

$337

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Sat 2/22

10:10 am-6:00 pm

1 stop8h 50m

Lambert-St Louis

Tue 2/25

9:29 am-3:28 pm

1 stop4h 59m

$352

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Wed 3/5

6:00 am-2:36 pm

2 stops9h 36m

Lambert-St Louis

Mon 3/10

3:30 pm-9:08 pm

1 stop4h 38m

$358

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Fri 1/31

9:51 am-3:44 pm

1 stop6h 53m

Lambert-St Louis

Sun 2/2

5:00 pm-10:44 pm

1 stop4h 44m

$385

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Wed 5/14

5:27 am-11:59 pm

2 stops19h 32m

Lambert-St Louis

Sun 5/18

1:58 pm-5:41 am

2 stops14h 43m

$1,079

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Wed 4/9

10:16 pm-11:46 pm

1 stop26h 30m

$66

RaleighSt. Louis

RDU - STL

RDUSTL

Raleigh-Durham

Thu 2/20

1:05 pm-2:20 pm

Nonstop2h 15m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 12 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Raleigh-St. Louis flight deals on Cheapflights vs. FlightHub >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 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 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.

Travel insights for flights from Raleigh to St. Louis

Get recent, data-driven insights about flights from Raleigh to St. Louis including ideal travel times, pricing trends, and more.

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 17, 2025.

Booking 77 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 January 20, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 8% on flights from Raleigh to St. Louis by exploring options for tickets in the evening.

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 December 16, 2024.

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

Weekly flight availability from Raleigh to St. Louis

Explore weekly flight availability from Raleigh to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 20, 2025.

The most flights from RDU to STL are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 January 20, 2025.
Read through reviews of airlines operating flights from Raleigh to St. Louis, such as Frontier, United Airlines and Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Comfort

8.1

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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, 7 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, Frontier ($140), Spirit Airlines ($316), and Southwest ($337) offers the cheapest pricing from Raleigh to St. Louis. Frontier is priced at 59% 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 ($66), Southwest ($169), and Delta ($179).

  • 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 $381, our data indicates the cheapest price to be $169. The most popular route (Raleigh-Durham - Lambert-St Louis), is priced around $137.

  • 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
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Raleigh to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$87Average$156FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$176Average$340FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$236Average$335FlexibilityNo cancel feeOn-time71%
DeltaCheapest$250Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$325Average$441FlexibilityNo cancel feeOn-time69%
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