Cheap flights from St Louis to Zagreb

Compare St Louis to Zagreb flight deals

Find the cheapest month or even day of the year to fly to Zagreb

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Flight deals from St Louis to Zagreb

Looking for a cheap last-minute deal or the best round-trip flight from St Louis Airport to Zagreb Airport? If you want to travel next month, round-trip fares start from $1,108. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from St Louis to Zagreb

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Zagreb flights are currently cheapest in August.

St Louis to Zagreb: Alternative routes

Compare routes from St Louis to Zagreb below. You may find an airport to fly into that's cheaper, faster, or easier than Zagreb.

St Louis to Zagreb: Flight information

The things to know before you go.
Cheapest flight found$768
Cheapest month to flyAugust

Finding cheap flights from St Louis to Zagreb: Frequently asked questions

The best price we found for a round-trip flight from St Louis to Zagreb is $768. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Zagreb. But we found flights with one or more stops from $768.
There are no flights flying from St Louis to Zagreb, as of June 2026.
The cheapest month to fly from St Louis to Zagreb is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Zagreb Airport on Monday, August 10, 2026.
No airlines currently offer direct flights between St Louis Airport and Zagreb Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Zagreb but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Zagreb is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Zagreb.

Flying from St Louis Airport (STL) to Zagreb Airport (ZAG): what you need to know

  • The timezone in Zagreb is UTC+1, which is seven hours ahead of St Louis.

  • Your STL to ZAG flight won't wait if you're late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're traveling internationally.

  • During popular months like July, you'll want to get to the airport earlier than normal. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a peak period in general.

  • Opt for a stopover if you'd love to break up your flight. Simply deselect 'Direct flights only' to see the options for tickets from St Louis Airport to Zagreb Airport. Frankfurt am Main Airport is a top stopover on the STL to ZAG route.

How to find the cheapest flights from St Louis Airport (STL) to Zagreb Airport (ZAG)

  • The lowest price we've seen for a one-way St Louis Airport to Zagreb Airport flight is $288. A return plane ticket is currently $768. Depending on the availability when you book, these fares may change.

  • To get your hands on cheap tickets from STL to ZAG, book early. Airlines typically offer lower prices when flights are first made available.

  • The 'Whole month' search function shows you the cheapest flights from St Louis Airport to Zagreb Airport across the entire month. It's an easy way to find a bargain if your travel dates are flexible.

  • You don't need to check back in every day to see if fares have dropped when you create a Price Alert. We'll let you know the moment there's a change in price on cheap flights from STL to ZAG.

  • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from St Louis Airport to Zagreb Airport.

Handy information about St Louis Airport (STL)

Arriving at Zagreb Airport (ZAG)

  • If you're landing on a late St Louis Airport to Zagreb Airport flight, few things top the convenience of being near the terminal. Grab your bags from the carousel and then be showered and resting shortly after at one of these options near ZAG:

  • Grab a Zagreb Airport rental car and discover Zagreb and beyond with your own wheels. AVIA Rent, Green Motion and OK Mobility are popular outlets you can book with here.

  • Secure the lowest price by reserving your ride from Zagreb Airport about four weeks before your travel date.

When to fly to Zagreb Airport (ZAG)

  • September is the most popular month for flights from St Louis Airport to Zagreb Airport. To avoid the crowds, travel to Zagreb in March.

  • When booking your flight from St Louis Airport to Zagreb Airport, think about the kind of weather you like. August is the warmest month in Zagreb, with the temperature ranging from 14ºC (57ºF) to 32ºC (90ºF).

  • January sees average temperatures of between -7ºC (19ºF) and 8ºC (46ºF). Look for cheap tickets from STL to ZAG sometime around then if you like cooler conditions.

Explore more of Croatia

  • You've visited Zagreb, now it's time to discover more of Croatia. Journey about 257 kilometers south to Split to check off its leading sights. From Diocletian's Palace to Old Split and Peristil, there's plenty to keep you on the go.

  • Rijeka is another essential stop in Croatia and is around 129 kilometers south-west of Zagreb. No journey is complete without seeing Teatro Fenice, The St. Vitus Cathedral and Church of St. Nicholas.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.