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

You can find one-way and return flights from RDU to STL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when RDU to STL ticket fares go up or down.

If you're looking for the cheapest time to fly from Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), August is typically your best bet. You can expect average return flight prices around AU$519 during this month. August often sees lower prices as the peak summer travel season begins to wind down. Other budget-friendly months to consider for this route include January and October.

Only one airline offers direct flights from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL). Southwest Airlines operates 14 direct flights from RDU to STL every week.

Louis Intl. (STL), with tickets starting from around AU$195. Louis Intl. (STL), with tickets starting from around AU$386 for flights that can be booked for departure within the next year. Southwest Airlines is one of the cheapest airlines offering nonstop return flights from Raleigh - Durham Intl. (RDU) to Lambert-St. Frontier Airlines offers one of the cheapest connecting return flights from Raleigh - Durham Intl. (RDU) to Lambert-St. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. American Airlines offers the most daily flights from Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The cheapest months to fly from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL) are typically August and October, with average return flights around AU$519. These months can offer a good balance of more affordable fares and potentially fewer crowds, allowing you to find a flight that suits your schedule and budget.

You'll find approximately 2 nonstop flights per day from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL). For even more choices, look at flights that include layovers, as there are around 92 connecting flights daily. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Charlotte-Douglas Intl. (CLT).

The earliest flight from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL) typically departs around 5:00 AM, operated by American Airlines. This is a seasonal service, active in May, June, and July. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL) on a Thursday, with around 71 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and Delta. Flight schedules are fairly consistent throughout the week, so you'll have plenty of options no matter which day you choose to fly.

The most popular departure times for flights from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL) are in the early morning, from 6am to 9am. Many major carriers, including American Airlines, Southwest Airlines and United, offer flights during this window. Many travellers prefer these early flights as they allow you to arrive at your destination with plenty of time to spare for the day.

A non-stop flight from Raleigh - Durham Intl. (RDU) to Lambert-St. Louis Intl. (STL) typically takes around 2 hours, covering a distance of approximately 1,072 kilometers. If you opt for a flight with one stop, your travel time will be longer, usually around 5 hours 18 minutes. Flights with two or more stops generally take about 9 hours. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.

You can fly business class or first class between RDU and STL. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on:

• Alaska Airlines
• United
• Delta
• American Airlines

It's easy to earn miles on a Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to St. Louis from Raleigh - Durham Intl. (RDU), you can fly directly into Lambert-St. Louis Intl. (STL). Some flights may connect through major hubs like Washington Dulles Intl. (IAD), Baltimore Washington Intl. Thurgood Marshall (BWI), or Nashville Intl. (BNA) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Raleigh, NC (RDU-Raleigh - Durham Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.