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Cheap flights from Raleigh to St. Louis from $55

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 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Raleigh to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Raleigh to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.
10:19 pm - 11:46 pmRDU-STL
26h 27m1 stop
4:57 pm - 9:16 pmSTL-RDU
27h 19m1 stop
$140Frontier
Find Deal
Mon, Apr 7 - Thu, Apr 10
1:42 pm - 10:00 amRDU-STL
21h 18m1 stop
5:24 pm - 2:10 pmSTL-RDU
19h 46m1 stop
$160Frontier
Find Deal
Thu, Mar 13 - Mon, Mar 17
10:16 pm - 11:49 pmRDU-STL
26h 33m1 stop
5:24 pm - 2:10 pmSTL-RDU
19h 46m1 stop
$170Frontier
Find Deal
Fri, Mar 14 - Mon, Mar 17
8:35 pm - 9:50 pmRDU-STL
2h 15mnonstop
7:45 am - 10:35 amSTL-RDU
1h 50mnonstop
$257Southwest
Find Deal
Mon, Mar 24 - Mon, Mar 31
8:35 pm - 9:50 pmRDU-STL
2h 15mnonstop
6:30 pm - 11:20 pmSTL-RDU
3h 50m1 stop
$267Southwest
Find Deal
Mon, Mar 10 - Mon, Mar 17
7:00 am - 3:40 pmRDU-STL
9h 40m2 stops
3:30 pm - 9:08 pmSTL-RDU
4h 38m1 stop
$333United Airlines
Find Deal
Wed, Mar 5 - Wed, Mar 12
2:07 pm - 5:56 pmRDU-STL
4h 49m1 stop
5:32 pm - 11:59 pmSTL-RDU
5h 27m1 stop
$351Delta
Find Deal
Fri, May 2 - Sun, May 4
4:44 pm - 9:49 pmRDU-STL
6h 05m1 stop
3:30 pm - 9:08 pmSTL-RDU
4h 38m1 stop
$362United Airlines
Find Deal
Sat, Mar 8 - Wed, Mar 12
5:25 am - 8:53 amRDU-STL
4h 28m1 stop
7:10 pm - 11:57 pmSTL-RDU
3h 47m1 stop
$385Delta
Find Deal
Fri, May 23 - Mon, May 26
10:08 am - 6:22 pmRDU-STL
9h 14m1 stop
5:00 am - 11:56 amSTL-RDU
5h 56m1 stop
$486American Airlines
Find Deal
Sat, Mar 29 - Sat, Apr 5

Frontier flights from Raleigh to St. Louis

Our best Frontier deals on Raleigh to St. Louis flight tickets
Frontier
Apr 7
RDU10:19 pmRaleigh-Durham
26h 27m
1 stop
STL11:46 pmLambert-St Louis
Apr 10
STL4:57 pmLambert-St Louis
27h 19m
1 stop
RDU9:16 pmRaleigh-Durham
Frontier
Mar 13
RDU1:42 pmRaleigh-Durham
21h 18m
1 stop
STL10:00 amLambert-St Louis
Mar 17
STL5:24 pmLambert-St Louis
19h 46m
1 stop
RDU2:10 pmRaleigh-Durham
Frontier
Mar 14
RDU10:16 pmRaleigh-Durham
26h 33m
1 stop
STL11:49 pmLambert-St Louis
Mar 17
STL5:24 pmLambert-St Louis
19h 46m
1 stop
RDU2:10 pmRaleigh-Durham

Southwest flights from Raleigh to St. Louis

Our best Southwest deals on Raleigh to St. Louis flight tickets
Southwest
Mar 24
RDU8:35 pmRaleigh-Durham
2h 15m
STL9:50 pmLambert-St Louis
Mar 31
STL7:45 amLambert-St Louis
1h 50m
RDU10:35 amRaleigh-Durham
Southwest
Mar 10
RDU8:35 pmRaleigh-Durham
2h 15m
STL9:50 pmLambert-St Louis
Mar 17
STL6:30 pmLambert-St Louis
3h 50m
1 stop
RDU11:20 pmRaleigh-Durham
Southwest
Mar 24
RDU5:50 pmRaleigh-Durham
8h 05m
1 stop
STL12:55 amLambert-St Louis
Mar 31
STL4:55 pmLambert-St Louis
5h 55m
2 stops
RDU11:50 pmRaleigh-Durham

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, June 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 $310. The month of April is another great option to travel to St. Louis, with average flight prices from Raleigh averaging around $320.

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 Saturday when prices can be found for as low as $376. 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 $484. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $346 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $423 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 9 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $348 when searching 9 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 $311 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.

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

As of February 2025, prices for Raleigh to St. Louis flights are approximately 32% cheaper 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

$55

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 $55. The best round-trip flight deal from Raleigh to St. Louis found on momondo in the last 72 hours is $140.
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)

  • 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 $87Free CancellationRating
6.0
3,352 reviews
Search Frontier flights
SouthwestPriceFrom $176Free CancellationRating
8.1
4,395 reviews
Search Southwest flights
American AirlinesPriceFrom $235Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $248Free CancellationRating
8.0
8,203 reviews
Search Delta flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
8,754 reviews
Search United Airlines flights
  • Southwest Flights From Raleigh to St. Louis

    Across 11 Southwest flights from Raleigh to St. Louis this week, the average price was $357, with the best Southwest deals starting from $176 round-trip. 4,396 users have rated Southwest on momondo, with an average score of 8.1/10.


Traveling to a place near St. Louis?

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

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.


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