RDU - STL

$65 Find Cheap Flights from Raleigh to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Raleigh to St. Louis departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Raleigh to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Raleigh to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Expert advice
Useful Info
Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Raleigh to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Jul 7 - Thu, Jul 17
Spirit Airlines Logo
10:36 am - 6:18 pmRDU-STL
8h 42m1 stop
Spirit Airlines Logo
10:47 am - 4:12 pmSTL-RDU
4h 25m1 stop
$139Spirit Airlines
Find Deal
Fri, Jul 4 - Thu, Jul 10
Spirit Airlines Logo
10:36 am - 5:04 pmRDU-STL
7h 28m1 stop
Spirit Airlines Logo
10:47 am - 4:12 pmSTL-RDU
4h 25m1 stop
$144Spirit Airlines
Find Deal
Fri, Jul 4 - Mon, Jul 7
Spirit Airlines Logo
10:36 am - 5:04 pmRDU-STL
7h 28m1 stop
Spirit Airlines Logo
7:13 pm - 9:41 amSTL-RDU
13h 28m1 stop
$146Spirit Airlines
Find Deal
Thu, Aug 7 - Mon, Aug 11
Southwest Logo
8:05 am - 9:10 amRDU-STL
2h 05mnonstop
Southwest Logo
7:50 am - 10:45 amSTL-RDU
1h 55mnonstop
$257Southwest
Find Deal
Fri, Jun 27 - Sat, Jun 28
Frontier Logo
12:51 pm - 11:53 pmRDU-STL
12h 02m1 stop
Frontier Logo
5:47 pm - 11:56 pmSTL-RDU
5h 09m1 stop
$260Frontier
Find Deal
Thu, Aug 7 - Mon, Aug 11
Southwest Logo
8:05 am - 9:10 amRDU-STL
2h 05mnonstop
Southwest Logo
4:15 pm - 11:00 pmSTL-RDU
5h 45m1 stop
$267Southwest
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
6:25 am - 1:23 pmRDU-STL
7h 58m1 stop
American Airlines Logo
9:56 am - 3:06 pmSTL-RDU
4h 10m1 stop
$270American Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
Frontier Logo
2:14 pm - 1:27 pmRDU-STL
24h 13m1 stop
Frontier Logo
2:22 pm - 9:52 amSTL-RDU
18h 30m1 stop
$277Frontier
Find Deal
Sat, Oct 11 - Sat, Oct 18
Delta Logo
7:25 am - 12:25 pmRDU-STL
6h 00m1 stop
Delta Logo
5:25 pm - 11:05 pmSTL-RDU
4h 40m1 stop
$297Delta
Find Deal
Tue, Nov 4 - Fri, Nov 7
American Airlines Logo
4:28 pm - 8:00 pmRDU-STL
4h 32m1 stop
American Airlines Logo
11:20 am - 5:46 pmSTL-RDU
5h 26m1 stop
$317American Airlines
Find Deal
Expert advice

Expert advice for your flight from Raleigh to St. Louis

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
RDU

RDU offers free Wi-Fi throughout the airport, lasting 48 hours per session, perfect for staying connected during delays.

Read more about RDUby Jessica Macdonald
STL

Use MetroLink for a convenient ride from STL to downtown St. Louis, avoiding rush hour traffic.

Read more about STLby Yulia Denisyuk
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on RDU

Jessica Macdonald

Jessica Macdonald

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.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

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.

Read more
Useful Info

KAYAK's insights & trends for Raleigh to St. Louis flights

Get data-powered insights and trends into flights from Raleigh to St. Louis to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all round-trip flights from Raleigh to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from Raleigh to St. Louis, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Raleigh, you’ll find the best rates on Mondays and the most expensive ones on Fridays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Raleigh to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Raleigh to St. Louis is July, where tickets cost $324 (return) on average. On the other hand, the most expensive months are February and March, where the average cost of round-trip tickets is $384 and $384 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Raleigh to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Raleigh to St. Louis, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMay
High seasonJuly
Cheapest flight$65
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 11% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Raleigh to St. Louis

  • What is the cheapest flight from Raleigh to St. Louis?

    In the last 3 days, the lowest price for a flight from Raleigh to St. Louis was $65 for a one-way ticket and $139 for a round-trip.

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

    No

  • Which airports will I be using when flying from Raleigh to St. Louis?

    On your way to St. Louis, you’ll fly out from Raleigh-Durham. You’ll be landing at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Raleigh to St. Louis?

    Delta, American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Raleigh to St. Louis flight route.

  • Which aircraft models fly most regularly from Raleigh to St. Louis?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Raleigh to St. Louis flight route.

  • On which days can I fly direct from Raleigh to St. Louis?

    There are nonstop flights from Raleigh to St. Louis on a daily basis.

  • Which is the best airline for flights from Raleigh to St. Louis, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Raleigh to St. Louis are Southwest and Delta. With an average price for the route of $375 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $374 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Raleigh to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Raleigh to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Raleigh to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Raleigh is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Raleigh to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Raleigh with another airline. Booking your flights between Raleigh and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Raleigh to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Raleigh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Raleigh to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $173 or less one-way and $308 or less round-trip.

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
See more direct flights

Top 5 airlines serving from Raleigh to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Raleigh to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Raleigh to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4287 reviews
8.2Boarding
8.0Comfort
7.6Entertainment
7.1Food
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

Long 5 hour and 45 min flight and only one drink service and cookie snack

Newark airport grounded inbound flight and only announced when the flight was about to start taxing.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

American Airlines initially postponed the flight. Then they cancelled it an rescheduled us on a flight that would take over 24 hours with multiple stops. They then changed this flight to a reasonable alternative the next day which they later cancelled and replaced with a flight that would take off with an additional 16 hour delay. They blamed weather but I noticed (at 4am) that Delta had direct flights from Charlotte to Detroit. I went on line. Booked it and was in Detroit buy 9am. The interesting thing is they did a similar thing to a family member just 2 days earlier. I don't think I will fly American unless I have to.

I was a little disappointed of not having an android charger. Only one it was for an iPhone. I've flown American in the past and had access to one.

At least it was a short flight. Greyhound with wings.

One of the best flights I’ve had. So smooth.

This flight didn’t happen because AA agents didn’t let us board the flight

Checking in at the counter was very disappointing. The lady had a very bad attitude and smart at me. She had no smile, did not greet me by name, or acknowledge me as a valued customer. Poor reflection of the airline.

First class flight attendant was rude and lacked any customer service skills.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

I liked the price of the flight and the chance to buy a seat with no person seated in the middle seat.. Also the flight was right on time.

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

Everything you need to know for your flight from Raleigh to St. Louis

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.