Cheap Flights from Reading (RDG) to St. Louis (SUS)

Popular airlines from Reading, PA (RDG-Reading Regional) to St. Louis, MO (SUS-Spirit of St. Louis)

Frequently asked questions

How much does a flight from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS) cost?
Get a cheap one-way flight or cheap return flight from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between RDG and SUS. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS)?
To find the cheapest airline that'll fly you from RDG to SUS, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS)?
Nonstop flights from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RDG to SUS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS)?
To avoid possible delays on the Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS) route, fly before 3 PM. Departures after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS) last-minute?
Booking your ticket from RDG to SUS right before your journey is typically more expensive. However, if you're flexible with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a RDG to SUS flight and hotel package?
Opting for a RDG to SUS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our extensive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Reading, PA (RDG-Reading Regional) to Spirit of St. Louis Airport (SUS)?
Typically, it's possible to cancel or reschedule your RDG to SUS flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Reading Regional
Destination airport
Spirit of St. Louis
Distance
790 mi

Book with confidence

Reading to St. Louis Flights

The cheapest times to fly from Reading to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Reading to St. Louis are during the month of . You can find some of the cheapest flights from Reading to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Reading to St. Louis

Sunday is one of the best days to book for cheap flights from Reading to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Reading to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Reading to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Reading to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Reading to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Reading to St. Louis Flights

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*Available to One Key members.