RDU - STL

$54 Find Cheap Flights from Raleigh to St. Louis - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$112
Typical prices: $288-$523
Frontier
Sun 11/4Sun 11/11
RDU - STL • 1 stop
Cheapest non-stop
$281
Typical prices: $388-$579
Southwest
Sat 10/13Sat 10/20
RDU - STL • Non-stop
Nonstop flights
You can fly direct with Southwest. Average duration is 2h 09m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 59% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $231 (round-trip)
Shortest trip • 3h 55m (one-way)
Insights
Insights
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Raleigh to St. Louis (RDU-STL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Raleigh to St. Louis

Wed, Nov 4 - Wed, Nov 11
Frontier Logo
6:30 am - 5:40 pmRDU  Raleigh-Durham-STL Lambert-St Louis
12h 10m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:44 pm - 12:24 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
16h 40m1 stop Atlanta Hartsfield-Jackson
$112Frontier
Wed, Nov 11 - Mon, Nov 16
Frontier Logo
6:30 am - 5:40 pmRDU  Raleigh-Durham-STL Lambert-St Louis
12h 10m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:44 pm - 3:23 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
19h 39m1 stop Atlanta Hartsfield-Jackson
$119Frontier
Wed, Nov 4 - Wed, Nov 11
Multiple Airlines Logo
6:30 am - 5:40 pmRDU  Raleigh-Durham-STL Lambert-St Louis
12h 10m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
6:44 pm - 6:10 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
22h 26m2 stops Atlanta Hartsfield-Jackson Orlando
$143Multiple Airlines
Mon, Oct 5 - Wed, Oct 7
Multiple Airlines Logo
6:35 am - 1:10 pmRDU  Raleigh-Durham-STL Lambert-St Louis
7h 35m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
2:29 pm - 8:59 amSTL  Lambert-St Louis-RDU Raleigh-Durham
17h 30m2 stops Atlanta Hartsfield-Jackson Tampa
$172Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Southwest Logo
6:05 pm - 10:20 pmRDU  Raleigh-Durham-STL Lambert-St Louis
5h 15m1 stop Orlando
Southwest Logo
5:30 am - 1:05 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
6h 35m1 stop Baltimore/Washington
$234Southwest
Tue, Oct 13 - Thu, Oct 15
Southwest Logo
6:05 pm - 10:20 pmRDU  Raleigh-Durham-STL Lambert-St Louis
5h 15m1 stop Orlando
Southwest Logo
1:00 pm - 7:10 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
5h 10m1 stop Baltimore/Washington
$255Southwest
Thu, Oct 15 - Tue, Oct 20
American Airlines Logo
5:02 am - 8:37 amRDU  Raleigh-Durham-STL Lambert-St Louis
4h 35m1 stop Charlotte Douglas
American Airlines Logo
6:27 am - 1:09 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
5h 42m1 stop Charlotte Douglas
$255American Airlines
Mon, Oct 19 - Tue, Oct 20
American Airlines Logo
5:02 am - 8:37 amRDU  Raleigh-Durham-STL Lambert-St Louis
4h 35m1 stop Charlotte Douglas
American Airlines Logo
10:22 am - 2:48 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
3h 26m1 stop Charlotte Douglas
$255American Airlines
Thu, Dec 24 - Thu, Dec 31
Delta Logo
2:59 pm - 6:19 pmRDU  Raleigh-Durham-STL Lambert-St Louis
4h 20m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:00 am - 3:08 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
5h 08m1 stop Atlanta Hartsfield-Jackson
$255Delta
Sat, Oct 24 - Thu, Oct 29
Delta Logo
5:20 am - 9:49 amRDU  Raleigh-Durham-STL Lambert-St Louis
5h 29m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:00 am - 12:37 pmSTL  Lambert-St Louis-RDU Raleigh-Durham
5h 37m1 stop Atlanta Hartsfield-Jackson
$255Delta
Booking Insights

Price, demand and travel trends for Raleigh to St. Louis flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Raleigh to St. Louis with more confidence.

How much is a round-trip flight from Raleigh to St. Louis?

Round-trip flights from Raleigh to St. Louis start at $112. Prices are below average for this route right now, with typical round-trip fares ranging from $288 to $523. The lowest price found in the past 5 days was $112 on Frontier.

What's the cheapest day of the week to fly from Raleigh to St. Louis?

Tuesday is the cheapest day of the week to fly from Raleigh to St. Louis, it is 13% cheaper than the average day. Monday is the most expensive day with flight prices 23% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • October is the cheapest month to fly from Raleigh to St. Louis at $346 round-trip.
  • September ($490) and August ($486) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 41% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Raleigh to St. Louis the cheapest?

Flights from Raleigh to St. Louis are cheapest 25 weeks before departure. Booking in this window typically costs about 59% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Raleigh to St. Louis

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on RDU

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Key details for Raleigh to St. Louis flights

Low season

February

Cheapest flight

$54
Most popular time to fly with an average 12% increase in price.
Flight from Raleigh to St. Louis

When to book flights from Raleigh to St. Louis

Are your dates flexible? Find out the best times to travel from Raleigh to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Raleigh to St. Louis flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airlines offer extra legroom and free seat selection on Raleigh to St. Louis flights?

    Among airlines operating Raleigh to St. Louis flights:

    • Southwest: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from Raleigh to St. Louis?

    Only Southwest operates flights between Raleigh and St. Louis.

  • Which airports can I use when flying from Raleigh to St. Louis?

    Flights from Raleigh to St. Louis usually depart from Raleigh-Durham (RDU) and arrive at Lambert-St Louis (STL).

  • Which airlines include bags at no extra cost on Raleigh to St. Louis flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Southwest: a cabin bag in Economy Class class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Raleigh to St. Louis?

    Two cabin classes are available on flights from Raleigh to St. Louis:

    • Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Raleigh to St. Louis?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $231 round-trip via Chicago O'Hare Intl (ORD), compared to $482 for nonstop.

  • What is the standard checked-bag allowance on flights from Raleigh to St. Louis?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Raleigh to St. Louis?

    The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest and United Airlines. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

  • Which airports do connecting flights from Raleigh to St. Louis pass through?

    One-stop flights from Raleigh to St. Louis most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 49% of one-stop connections
    • Charlotte Douglas (CLT) - 31% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 9% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 4% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Raleigh to St. Louis?

    Yes. Being flexible with your travel dates can save you up to 30% on the Raleigh to St. Louis route. Tuesday is the cheapest departure day at $347 round-trip on average, while Monday is the most expensive at $491, a difference of $144. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How are flight departures from Raleigh to St. Louis spread across the day?

    Morning is the busiest departure period on Raleigh to St. Louis flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

  • What popular places can I visit in St. Louis?

    Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

  • What are the earliest and latest flights from Raleigh to St. Louis?

    These are the earliest and latest flight times available from Raleigh to St. Louis:

    • Earliest: departs at 5:45 am and lands at 7:54 am
    • Latest: departs at 8:50 pm and lands at 10:59 pm.

    The flight takes about 2h 09m.

  • How expensive are last-minute Raleigh to St. Louis flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 46% above the route average of $398. Book 25 weeks before departure for the lowest fares.

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

    A nonstop flight from Raleigh to St. Louis takes 2h 09m, covering 666 miles.

  • Do I need a passport to fly from Raleigh to St. Louis?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • How are flight prices from Raleigh to St. Louis looking right now?

    One-way fares from Raleigh to St. Louis are currently lower than usual. Average one-way flight prices are about $113, which is 48% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Raleigh to St. Louis?

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 3h 55m, compared with 4h 16m via Chicago Midway (MDW) and 4h 25m via Detroit Metropolitan Wayne County (DTW).

  • What is the time difference between Raleigh and St. Louis?

    St. Louis is 1 hour behind Raleigh (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

  • How much should I expect to pay for a Raleigh to St. Louis flight?

    Round-trip flights from Raleigh to St. Louis range from $288 to $523, with an average of $398 over the past 12 months. Anything below $288 counts as a good deal.

  • Which airlines offer Wi-Fi on Raleigh to St. Louis flights?

    JetBlue is the only airline on the Raleigh to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.

Your guide to booking Raleigh to St. Louis flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $347 - about $144 less than Monday (29% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 59% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Raleigh to St. Louis trip for October. Fares historically average $346 round-trip in that month - typically $144 less than the most expensive month, which is September (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Chicago O'Hare Intl Airport (ORD) can be cheaper than flying direct. The cheapest layover option averages $231 round-trip on this route - about $251 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.
    - Drury Inn & Suites St. Louis Airport
    - Renaissance St. Louis Airport Hotel
    - DoubleTree by Hilton St. Louis Airport

Prefer to fly direct from Raleigh to St. Louis?

 
Find which airlines fly direct from Raleigh-Durham Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Raleigh-Durham to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to Raleigh-Durham

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

More options for your flight from Raleigh to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental