Cheap Flights from Rockford (RFD) to St. Louis (STL)

Popular airlines from Rockford, IL (RFD-Greater Rockford) to St. Louis Lambert Intl. Airport (STL)

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Flights from Rockford (RFD) to St. Louis (STL)
Origin airport
Greater Rockford
Destination airport
Lambert-St. Louis Intl.
Distance
248 mi

Rockford to St. Louis Flights

The cheapest times to fly from Rockford 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 Rockford to St. Louis are during the month of . You can find some of the cheapest flights from Rockford to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Rockford 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 Rockford 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 Rockford 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 Rockford 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 Rockford 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.

 

Frequently asked questions

How much does a flight from Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from RFD to STL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from RFD to STL?
The cheapest flights from RFD to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from RFD to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from RFD to STL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily direct flights departing from Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be on your way in no time.
What day of the week has the most flights from RFD to STL?
You’ll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL)?
Select a flight from Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be 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 Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your departure to book your flight from RFD to STL generally means paying more. While you might find some last-minute offers, they aren’t always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a RFD to STL flight and hotel package?
You’ll generally save money by booking a RFD to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage it all in one place. Once you’ve chosen your ideal flights and accommodations, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Rockford, IL (RFD-Greater Rockford) to Lambert-St. Louis Intl. Airport (STL)?
If you reserved your RFD to STL flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare 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, visit our Customer Service portal if you want more information.

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