$107 Cheap Flights from Raleigh to St. Louis

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Raleigh - Durham Intl. to Lambert-St. Louis Intl.

Amazing RDU to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $214 round trip and $107 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from RDU to STL right now?
For any present STL travel advice and quarantine requirements, visit our Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught up en route.
Are there direct flights from RDU to Lambert-St. Louis Intl. Airport (STL)?
If you’re not exactly fond of stopovers, it’s a good idea to organize your flight from Raleigh - Durham Intl. Airport (RDU) to Lambert Field as early as possible. Southwest Airlines is the only carrier that offers nonstop flights on this route.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Lambert-St. Louis Intl. Airport (STL), please visit our Customer Service Portal.
How long is the flight from Raleigh--Durham Airport to STL?
The flight time between Raleigh - Durham Intl. Airport (RDU) and STL is around 4 hours and 57 minutes. Make your journey pleasant by downloading a movie or a few TV shows on your tablet or laptop and enjoying them with your seat fully reclined.
What is the flight distance from Raleigh - Durham Intl. Airport (RDU) to STL?
There’s a flight distance of 670 mi between Raleigh–Durham Airport and Lambert-St. Louis Intl. Airport (STL). Make the most of your short journey to pencil down all the famous sightseeing places you want to visit and how you’re going to get there. A comprehensive itinerary is key to having a fantastic vacation.
What airlines fly from RDU to STL?
With Southwest Airlines, you won’t have to bother with long layovers or hanging about waiting for your connecting flight. This popular airline will fly you nonstop from Raleigh to St. Louis on one of the 26 flights servicing this route every month.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From Raleigh - Durham Intl.
Traveling To Lambert-St. Louis Intl.
Shortest Flight Time 2 hours 0 mins
Earliest Departure Time 12:50PM EDT
Latest Departure Time 12:50PM EDT
Lowest Flight Price $214

Route Info

Flight path for flights from Raleigh-Durham International Airport to Lambert-St. Louis International Airport

670.00 miles

Airlines & Aircraft Used on RDU to STL Flight Routes

Airline Carrier
American Airlines
Airbus A319
American Airlines
Canadair Regional Jet 700
American Airlines
Embraer 170
American Airlines
Embraer 190
American Airlines
Embraer RJ145 Amazon
Jet Airways (India)
Aerospatiale/Alenia ATR 42/ ATR 72

Discover our best flights from Raleigh RDU to St. Louis STL. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Raleigh RDU to St. Louis STL at the right price  

Airfares to St. Louis STL from Raleigh RDU currently cost between $214 and $250. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Raleigh RDU to St. Louis STL 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Raleigh RDU to St. Louis STL on Travelocity starting at $107. Prices and availability subject to change. Additional terms may apply. 


Get to St. Louis STL from Raleigh RDU quicker with direct flights. 

Get to St. Louis faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to STL from RDU to take around 2 hour(s) 0 min(s).  


Find our cheapest airfares for flights from Raleigh RDU to St. Louis STL

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to STL from RDU. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Raleigh RDU to St. Louis STL today 

If you’re flexible about when you travel, October is usually the cheapest month to fly from Raleigh RDU to St. Louis STL. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to St. Louis STL from Raleigh RDU 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to STL from RDU have this option.  


Travel with confidence when you book flights to St. Louis STL from Raleigh RDU with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.