Cheap Flights from St. Louis (STL) to Banja Luka (BNX)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Banja Luka (BNX-Banja Luka Intl.)

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX) cost?
Secure a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX)?
The cheapest month to fly from STL to BNX is , when there's less demand. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to BNX flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX)?
There are no daily direct flights from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from STL to BNX?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the time of year, airline and other factors.*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 Banja Luka Intl. Airport (BNX)?
To land at Banja Luka Intl. Airport (BNX) on schedule, choose a flight that takes off from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Banja Luka Intl. Airport (BNX) last-minute?
Last-minute fares from STL to BNX are typically more expensive. For the lowest prices, start looking for flights early. That being said, if your travel plans are flexible, it's possible to find a cheap ticket right before you leave.
Is it cheaper to book a STL to BNX flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to BNX flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the hassle out of travel planning. Just pick your flights and select from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Banja Luka Intl. Airport (BNX)?
In most cases, you can cancel or modify your STL to BNX flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more details, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Banja Luka Intl.
Distance
5117 mi

Book with confidence

Book with confidence

St. Louis to Banja Luka Flights

The cheapest times to fly from St. Louis to Banja Luka

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

 

The best time to book a flight from St. Louis to Banja Luka

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

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 Banja Luka 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 Banja Luka 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 Banja Luka 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 Banja Luka Flights
*Available to One Key members.