Cheap Flights from St. Louis (STL) to Rost (RET)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Rost (RET)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Rost (RET) cost?
Lock in a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Rost (RET) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Rost (RET)?
The cheapest month to fly from STL to RET is , when demand is low. Off-peak months are typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Rost (RET)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to RET flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Rost (RET)?
There are no daily direct flights departing from Lambert-St. Louis Intl. Airport (STL) to Rost (RET). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to RET?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Rost (RET)?
To land at Rost (RET) on schedule, opt for a flight that leaves from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Lambert-St. Louis Intl. Airport (STL) to Rost (RET) last-minute?
Last-minute fares from STL to RET are typically more expensive. To lock in the cheapest rates, start searching for flights ahead of time. That said, if you're flexible with your travel dates, you may land a cheap ticket just before your departure.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Rost (RET)?
Usually, it's possible to cancel or reschedule your STL to RET flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Rost
Distance
4081 mi

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St. Louis to Rost Flights

The cheapest times to fly from St. Louis to Rost

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

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Rost: 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 St. Louis to Rost

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 St. Louis to Rost 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 St. Louis to Rost 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 St. Louis to Rost 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.

 

St. Louis to Rost Flights
*Available to One Key members.