RDU - STL

$81 Find Cheap Flights from Raleigh to St. Louis - Compare and Save

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 7/14. 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, 0 bags

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
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Everything you should know

Cheapest round-trip
$211
Typical prices: $489-$296
Multiple Airlines
Mon 7/13Sat 7/18
RDU - STL • 2 stops
Cheapest non-stop
$297
Typical prices: $557-$410
Southwest
Wed 7/8Tue 7/14
RDU - STL • Non-stop
Top airlines
Cheapest • from $214 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest. Average duration is 2h 06m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $241 (round-trip)
Shortest trip • 4h 06m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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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)

 
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 13 - Sat, Jul 18
Multiple Airlines Logo
8:29 pm - 5:37 pm
RDU
-
STL
22h 08m
2 stops
Multiple Airlines Logo
4:57 pm - 8:11 am
STL
-
RDU
14h 14m
1 stop
$211Multiple Airlines
Fri, Jul 10 - Tue, Jul 14
Multiple Airlines Logo
12:04 pm - 8:57 am
RDU
-
STL
21h 53m
1 stop
Multiple Airlines Logo
6:34 pm - 3:09 pm
STL
-
RDU
19h 35m
2 stops
$223Multiple Airlines
Tue, Jun 30 - Mon, Jul 6
Frontier Logo
6:15 am - 8:52 am
RDU
-
STL
27h 37m
1 stop
Frontier Logo
4:57 pm - 12:04 am
STL
-
RDU
6h 07m
1 stop
$224Frontier
Mon, Jul 20 - Sat, Aug 1
Multiple Airlines Logo
8:29 pm - 8:57 am
RDU
-
STL
37h 28m
2 stops
Multiple Airlines Logo
4:57 pm - 12:03 am
STL
-
RDU
6h 06m
1 stop
$227Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
Frontier Logo
5:29 pm - 5:37 pm
RDU
-
STL
25h 08m
2 stops
Frontier Logo
4:57 pm - 12:04 am
STL
-
RDU
6h 07m
1 stop
$228Frontier
Tue, Jul 14 - Tue, Jul 21
Frontier Logo
10:22 pm - 5:37 pm
RDU
-
STL
44h 15m
2 stops
Frontier Logo
6:34 pm - 8:11 am
STL
-
RDU
12h 37m
1 stop
$229Frontier
Tue, Sep 8 - Sun, Sep 13
Multiple Airlines Logo
12:54 pm - 9:40 am
RDU
-
STL
21h 46m
1 stop
Multiple Airlines Logo
10:35 am - 10:25 pm
STL
-
RDU
10h 50m
2 stops
$233Multiple Airlines
Fri, Jul 24 - Sun, Jul 26
Frontier Logo
12:04 pm - 8:57 am
RDU
-
STL
21h 53m
1 stop
Frontier Logo
6:34 pm - 8:11 am
STL
-
RDU
12h 37m
1 stop
$234Frontier
Mon, Aug 10 - Wed, Aug 12
Multiple Airlines Logo
2:32 pm - 11:59 pm
RDU
-
STL
10h 27m
1 stop
Multiple Airlines Logo
4:57 pm - 8:01 am
STL
-
RDU
14h 04m
1 stop
$236Multiple Airlines
Tue, Jun 30 - Tue, Jul 7
Frontier Logo
12:54 pm - 5:30 pm
RDU
-
STL
5h 36m
1 stop
Frontier Logo
6:34 pm - 8:11 am
STL
-
RDU
12h 37m
1 stop
$237Frontier
Booking Insights

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.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Raleigh to St. Louis departing in July.

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 Saturdays 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 October, where tickets cost $343 (return) on average. On the other hand, the most expensive months are September and June, where the average cost of round-trip tickets is $490 and $475 respectively.

Can I save money by flying with a layover from Raleigh to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $391, prices are generally cheapest when you fly direct.

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 5 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Raleigh to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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.

Good to know

Low seasonJanuary
Cheapest flight$81
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 8% 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 5 days, the lowest price for a flight from Raleigh to St. Louis was $81 for a one-way ticket and $211 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, JetBlue, 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 MAX 8 is the aircraft model that flies most regularly on the Raleigh to St. Louis flight route.

  • Which airline alliances offer flights from Raleigh to St. Louis?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Raleigh and St. Louis, with Star Alliance being the most commonly used for this 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 $458 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $350 and an overall rating of 7.9.

  • 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 $203 or less one-way and $439 or less round-trip.

Prefer to fly direct from Raleigh to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Raleigh-Durham to Lambert-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

Reviews of the 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.
7.9
SouthwestOverall score based on 4235 reviews
7.0Food
8.0Comfort
8.6Crew
7.5Entertainment
8.1Boarding
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Flight left on time. Captain provided relevant announcements. We had to wait 45 minutes to desembark due to the ramp closed because of lightening.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

Had to wait for a gate for a long time, then waited on the run way for a long time before leaving. The actual flights part was good.

Airlines should be prohibited from using the seats they get away with.

Got home at 3am after deboarding the plane. No compensation offered by American

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The "on the ground" A/C was not working. It was so hot while waiting to get in the air, a passenger from the rear of the plan declared "I just can't!" and waited in the gangway until time to close the doors. It was miserable. But the crew were champs and had an amazing attitude. I know they were as miserable as we were but didn't let that affect their performance.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

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

Information on your arrival and departure airports