$663 Cheap Flights from St. Louis (STL) to Zakynthos (ZTH)

View $663 flight on Sat, May 9, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Zakynthos (ZTH-Zakynthos Intl.)

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Cheap Flights from St. Louis to Zakynthos (STL-ZTH)

Prices were available within the past 7 days and start at $663 for one-way flights and $732 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 22 - Sat, Nov 8
STL
St. Louis
ZTH
Zakynthos
$732 Roundtrip, found 4 days ago
$732
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 22 from St. Louis to Zakynthos, returning Sat, Nov 8, priced at $732 found 4 days ago
United
Fri, Oct 24 - Sat, Nov 8
STL
St. Louis
ZTH
Zakynthos
$785 Roundtrip, found 4 days ago
$785
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 24 from St. Louis to Zakynthos, returning Sat, Nov 8, priced at $785 found 4 days ago
Lufthansa
Fri, Oct 31 - Wed, Nov 19
STL
St. Louis
ZTH
Zakynthos
$937 Roundtrip, found 4 days ago
$937
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Fri, Oct 31 from St. Louis to Zakynthos, returning Wed, Nov 19, priced at $937 found 4 days ago
Air Canada
Sun, Nov 2 - Wed, Nov 19
STL
St. Louis
ZTH
Zakynthos
$939 Roundtrip, found 4 days ago
$939
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sun, Nov 2 from St. Louis to Zakynthos, returning Wed, Nov 19, priced at $939 found 4 days ago
United
Thu, Oct 30 - Wed, Nov 19
STL
St. Louis
ZTH
Zakynthos
$951 Roundtrip, found 4 days ago
$951
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 30 from St. Louis to Zakynthos, returning Wed, Nov 19, priced at $951 found 4 days ago
Lufthansa
Fri, Oct 31 - Sun, Nov 16
STL
St. Louis
ZTH
Zakynthos
$987 Roundtrip, found 4 days ago
$987
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Fri, Oct 31 from St. Louis to Zakynthos, returning Sun, Nov 16, priced at $987 found 4 days ago
Air Canada
Sun, Nov 2 - Sun, Nov 16
STL
St. Louis
ZTH
Zakynthos
$989 Roundtrip, found 4 days ago
$989
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sun, Nov 2 from St. Louis to Zakynthos, returning Sun, Nov 16, priced at $989 found 4 days ago
United
Thu, Oct 30 - Sun, Nov 16
STL
St. Louis
ZTH
Zakynthos
$1,001 Roundtrip, found 4 days ago
$1,001
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 30 from St. Louis to Zakynthos, returning Sun, Nov 16, priced at $1,001 found 4 days ago
Lufthansa
Thu, Oct 23 - Sat, Nov 8
STL
St. Louis
ZTH
Zakynthos
$1,015 Roundtrip, found 4 days ago
$1,015
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Thu, Oct 23 from St. Louis to Zakynthos, returning Sat, Nov 8, priced at $1,015 found 4 days ago
Delta
Mon, Nov 17 - Mon, Dec 1
STL
St. Louis
ZTH
Zakynthos
$1,019 Roundtrip, found 4 days ago
$1,019
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Nov 17 from St. Louis to Zakynthos, returning Mon, Dec 1, priced at $1,019 found 4 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH) cost?
Lock in a cheap one-way flight from $663 or cheap return flight from $732 from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH) 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 Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH)?
The cheapest month to fly from STL to ZTH is October, when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from STL to ZTH. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH)?
There aren't any daily direct flights departing from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to ZTH?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, 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 Zakynthos Intl. Airport (ZTH)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH) route, travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Zakynthos Intl. Airport (ZTH) last-minute?
Holding off until right before your break to book a flight from STL to ZTH generally means paying more. While it's possible to find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary to maximize your chances of snagging a bargain.
Is it cheaper to book a STL to ZTH flight and hotel package?
Booking a STL to ZTH flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our wide range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Zakynthos Intl. Airport (ZTH)?
In most instances, you can modify or cancel your STL to ZTH flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Zakynthos Intl.
Roundtrip price
$732
Distance
5583 mi

Book with confidence

Book with confidence

St. Louis to Zakynthos Flights

The cheapest times to fly from St. Louis to Zakynthos

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

 

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

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

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 Zakynthos in 2025. You can also book with separate airlines for your outbound and return journeys, from $663 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 Zakynthos 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 Zakynthos 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 Zakynthos Flights

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*Available to One Key members.