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Cheap flights from Raleigh to St. Louis from $66

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Raleigh to St. Louis departing on 9/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Raleigh to St. Louis

Cheap round-trip flights

American Airlines Logo
1:09 pm - 5:10 pmRDU-STL
5h 01m1 stop
American Airlines Logo
5:52 pm - 11:21 pmSTL-RDU
4h 29m1 stop
$158American Airlines
Find Deal
vie., ago. 22 - vie., ago. 29
American Airlines Logo
6:00 am - 9:40 amRDU-STL
4h 40m1 stop
American Airlines Logo
5:52 pm - 11:21 pmSTL-RDU
4h 29m1 stop
$159American Airlines
Find Deal
vie., ago. 22 - vie., ago. 29
Spirit Airlines Logo
9:27 am - 1:32 pmRDU-STL
5h 05m1 stop
Spirit Airlines Logo
2:30 pm - 1:47 pmSTL-RDU
22h 17m1 stop
$164Spirit Airlines
Find Deal
vie., ago. 22 - dom., ago. 24
Spirit Airlines Logo
9:27 am - 1:32 pmRDU-STL
5h 05m1 stop
Spirit Airlines Logo
10:37 am - 6:51 pmSTL-RDU
7h 14m1 stop
$166Spirit Airlines
Find Deal
lun., ago. 18 - jue., ago. 21
Frontier Logo
5:07 pm - 1:59 pmRDU-STL
21h 52m1 stop
Frontier Logo
5:40 pm - 10:41 pmSTL-RDU
28h 01m1 stop
$184Frontier
Find Deal
vie., ago. 15 - lun., ago. 18
Southwest Logo
7:40 pm - 8:45 pmRDU-STL
2h 05mnonstop
Southwest Logo
7:50 am - 10:45 amSTL-RDU
1h 55mnonstop
$191Southwest
Find Deal
jue., sep. 4 - lun., sep. 8
Southwest Logo
1:45 pm - 5:00 pmRDU-STL
4h 15m1 stop
Southwest Logo
10:25 am - 1:15 pmSTL-RDU
1h 50mnonstop
$196Southwest
Find Deal
sáb., oct. 11 - sáb., oct. 18
Frontier Logo
5:07 pm - 1:59 pmRDU-STL
21h 52m1 stop
Frontier Logo
2:36 pm - 4:12 pmSTL-RDU
24h 36m1 stop
$197Frontier
Find Deal
vie., ago. 15 - dom., ago. 17
Logo
10:12 am - 1:35 pmRDU-STL
4h 23m1 stop
Logo
2:02 pm - 9:53 amSTL-RDU
18h 51m1 stop
$211
Find Deal
jue., sep. 4 - vie., sep. 5
Logo
8:00 am - 11:47 pmRDU-STL
16h 47m1 stop
Logo
10:47 am - 4:12 pmSTL-RDU
4h 25m1 stop
$239
Find Deal
mié., jul. 30 - dom., ago. 3

American Airlines flights from Raleigh to St. Louis

Our best American Airlines deals on Raleigh to St. Louis flight tickets
American Airlines
Aug 22
RDU1:09 pmRaleigh-Durham
5h 01m
1 stop
STL5:10 pmLambert-St Louis
Aug 29
STL5:52 pmLambert-St Louis
4h 29m
1 stop
RDU11:21 pmRaleigh-Durham
$158
Find similar
American Airlines
Aug 22
RDU6:00 amRaleigh-Durham
4h 40m
1 stop
STL9:40 amLambert-St Louis
Aug 29
STL5:52 pmLambert-St Louis
4h 29m
1 stop
RDU11:21 pmRaleigh-Durham
$159
Find similar
American Airlines
Aug 22
RDU10:24 amRaleigh-Durham
6h 50m
1 stop
STL4:14 pmLambert-St Louis
Aug 29
STL5:52 pmLambert-St Louis
4h 29m
1 stop
RDU11:21 pmRaleigh-Durham
$160
Find similar

Southwest flights from Raleigh to St. Louis

Our best Southwest deals on Raleigh to St. Louis flight tickets
Southwest
Sep 4
RDU7:40 pmRaleigh-Durham
2h 05m
STL8:45 pmLambert-St Louis
Sep 8
STL7:50 amLambert-St Louis
1h 55m
RDU10:45 amRaleigh-Durham
$191
Find similar
Southwest
Oct 11
RDU1:45 pmRaleigh-Durham
4h 15m
1 stop
STL5:00 pmLambert-St Louis
Oct 18
STL10:25 amLambert-St Louis
1h 50m
RDU1:15 pmRaleigh-Durham
$196
Find similar
Southwest
Oct 11
RDU6:10 amRaleigh-Durham
8h 50m
2 stops
STL2:00 pmLambert-St Louis
Oct 25
STL8:30 amLambert-St Louis
6h 40m
1 stop
RDU4:10 pmRaleigh-Durham
$206
Find similar

See travel insights to St. Louis from

How to get the cheapest flight ticket from Raleigh to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, July is the cheapest month to fly from Raleigh to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $328. The month of August is another great option to travel to St. Louis, with average flight prices from Raleigh averaging around $334.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $366. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $436. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Raleigh in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $331 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $411 per ticket.

What is the cheapest Raleigh-Durham to Lambert-St Louis flight route?

Fly from Raleigh-Durham to Lambert-St Louis for the best Raleigh-Durham - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Raleigh when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $363 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Raleigh for as low as $300 on momondo.

What cabin class options are available on Raleigh-Durham to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on Raleigh-Durham to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Raleigh to St. Louis flights?

You could potentially save up to 14% on your flight if you consider stops on a Raleigh to St. Louis flight.

How have Raleigh to St. Louis flight prices changed over time?

As of July 2025, prices for Raleigh to St. Louis flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Raleigh to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Raleigh to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Raleigh to St. Louis (RDU to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Raleigh to St. Louis

Best Price Found

$66

Fastest flight time

2h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Raleigh in the past 72 hours is $66. The best round-trip flight deal from Raleigh to St. Louis found on momondo in the last 72 hours is $158.
The fastest flight from Raleigh to St. Louis takes 2h 05m
Direct flights go from Raleigh to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Raleigh-Durham to Lambert-St Louis by plane?

    Lambert-St Louis is 665.0 mi away from Raleigh-Durham. 2h 05m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Raleigh-Durham Airport to Lambert-St Louis Airport?

    Prices for flights from Raleigh-Durham Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Raleigh-Durham Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Raleigh-Durham Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Raleigh-Durham Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Raleigh to St. Louis?

  • What is the most popular airline from Raleigh to St. Louis?

Best airlines flying from Raleigh to St. Louis

Compare and see reviews for airlines that fly from Raleigh to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.9
3,271 reviews
Search Frontier flights
SouthwestPriceFrom $178Free CancellationRating
8.0
4,249 reviews
Search Southwest flights
American AirlinesPriceFrom $248Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
DeltaPriceFrom $296Free CancellationRating
8.0
7,951 reviews
Search Delta flights

  • Southwest Flights From Raleigh to St. Louis

    Across 11 Southwest flights from Raleigh to St. Louis this week, the average price was $378, with the best Southwest deals starting from $178 round-trip. 4,250 users have rated Southwest on momondo, with an average score of 8.0/10.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Alton
Wentzville
Festus
Glencoe
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Raleigh to St. Louis?

It is quick and easy to find Raleigh to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Raleigh to St. Louis with flexible booking policies on momondo?

Flights from Raleigh to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Raleigh to St. Louis?

momondo helps you find the best flight between Raleigh and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Raleigh to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Raleigh to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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