STL - ZAG

$610 Find Cheap Flights from St. Louis to Zagreb

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Zagreb departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Zagreb

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Zagreb, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Zagreb, as well as popular online travel agencies
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Flight Deals

Cheap Flights from St. Louis to Zagreb (STL-ZAG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Zagreb that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Zagreb

Tue, Mar 3 - Tue, Mar 10
Delta Logo
10:45 am - 2:35 pmSTL-ZAG
20h 50m2 stops
Delta Logo
6:30 am - 8:39 pmZAG-STL
20h 09m2 stops
$610Delta
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Tue, Nov 18 - Thu, Dec 18
Multiple Airlines Logo
5:24 pm - 3:55 pmSTL-ZAG
15h 31m2 stops
Multiple Airlines Logo
6:10 am - 3:29 pmZAG-STL
40h 19m2 stops
$655Multiple Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Air Canada Logo
4:05 pm - 12:50 pmSTL-ZAG
14h 45m2 stops
Air Canada Logo
6:00 am - 3:24 pmZAG-STL
40h 24m2 stops
$658Air Canada
Find Deal
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
4:05 pm - 1:50 pmSTL-ZAG
38h 45m2 stops
Multiple Airlines Logo
6:15 am - 9:00 pmZAG-STL
20h 45m3 stops
$706Multiple Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
4:50 pm - 1:50 pmSTL-ZAG
15h 00m1 stop
United Airlines Logo
6:00 am - 3:24 pmZAG-STL
40h 24m2 stops
$744United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
4:50 pm - 10:15 pmSTL-ZAG
23h 25m1 stop
United Airlines Logo
6:00 am - 3:24 pmZAG-STL
40h 24m2 stops
$747United Airlines
Find Deal
Tue, Nov 18 - Thu, Dec 18
Lufthansa Logo
11:49 am - 12:45 pmSTL-ZAG
17h 56m2 stops
Lufthansa Logo
2:45 pm - 1:55 pmZAG-STL
30h 10m1 stop
$754Lufthansa
Find Deal
Fri, Mar 27 - Tue, Mar 31
Lufthansa Logo
4:50 pm - 1:50 pmSTL-ZAG
15h 00m1 stop
Lufthansa Logo
3:00 pm - 1:30 pmZAG-STL
29h 30m1 stop
$759Lufthansa
Find Deal
Fri, Mar 27 - Tue, Mar 31
Lufthansa Logo
4:50 pm - 10:15 pmSTL-ZAG
23h 25m1 stop
Lufthansa Logo
3:00 pm - 1:30 pmZAG-STL
29h 30m1 stop
$761Lufthansa
Find Deal
Thu, Mar 12 - Fri, Mar 27
Air Canada Logo
4:05 pm - 1:15 pmSTL-ZAG
15h 10m2 stops
Air Canada Logo
6:55 am - 9:00 pmZAG-STL
20h 05m3 stops
$4,994Air Canada
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $610 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 35% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$610
Typical prices: $669-$1,314
Delta
Tue 3/3Tue 3/10
STL - ZAG • 2 stops
Cheapest one-way
Multiple Airlines
Wed 10/15
STL - ZAG • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Zagreb!
Booking Insights

KAYAK's insights & trends for St. Louis to Zagreb flights

Get data-powered insights and trends into flights from St. Louis to Zagreb to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Zagreb?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Zagreb departing in March.

What’s the cheapest day of the week to fly from St. Louis to Zagreb?

The average price of all round-trip flights from St. Louis to Zagreb clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Zagreb, you should consider leaving on a Monday and avoid Wednesdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

What is the cheapest month to fly from St. Louis to Zagreb?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Zagreb, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Zagreb is October, where tickets cost $641 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,223 and $1,191 respectively.

How far in advance should I book a flight from St. Louis to Zagreb?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Zagreb, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Zagreb, you should book around 2 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$610
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from St. Louis to Zagreb

When to book flights from St. Louis to Zagreb

Are your dates flexible? Find out the best times to travel from St. Louis to Zagreb based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Zagreb

  • What is the cheapest flight from St. Louis to Zagreb?

    In the last 3 days, the lowest price for a flight from St. Louis to Zagreb was $610 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Zagreb?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Zagreb.

  • Which aircraft models fly most regularly from St. Louis to Zagreb?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Zagreb?

    SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Zagreb, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Zagreb, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Zagreb are Delta and KLM. With an average price for the route of $1,142 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,112 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from St. Louis to Zagreb?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Zagreb.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Zagreb?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Zagreb from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Zagreb?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Zagreb with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and ZAG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Zagreb?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Zagreb from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Zagreb

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Zagreb. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Zagreb? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7977 reviews
8.2Boarding
8.5Crew
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

6.0 GoodFernando, Oct 2025SAN - ATL
Read more Delta reviews

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight was great. The gate location was way to far away!!!

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Flight was good but there are way to many announcements for credit cards etc.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

For goodness sake, board from the back of the plane to the front and assign overhead space. It would fix everything. Seriously.

Elderly female flight attendant was not customer friendly. There were only about 12 people on a regional jet that had about 60 seats. There were 8 exit row seats and none of them were taken. We attempted to sit in those seats and the flight attendant gave the standard " you didn't pay for those" so she would not allow us to move. What harm would that have caused ? They assigned seats to 5 of the 12 people in 2 rows, row 20 and 21. A simple friendly customer experience gesture of allowing us to sit in exit rows would have gone a long way in me having a very favorable impression on Air Canada. After that I have very poor impression of Air Canada and will not fly with them when I can avoid it.

It was a smooth flight both in the sky and landing!

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Fair. What's the point of partnering with United if we cannot use the lounge. My wife is a frequent flier with United but we were refused access to Air Canada lounge

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

The service and flight was great. Luggage came out very quickly!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Everything went smoothly and the staff was very kind. I’m glad I purchased the extra leg room for my long flight; it was totally worth it. We were served 2 meals for a 9 hour flight which I was not expecting and they were very tasty. I appreciated them being vegetarian. Customs line in Munich was long; I had a choice to have a 1 hr 40 min layover or 2 hr 40 min layover; I took the longer layover which I was thankful for because my flight was delayed 30 minutes and there’s a good chance I would have missed my connecting flight. This was my very first international flight and I would fly Discover again without hesitation. Thank you for taking good care of me!

I liked everything BUT the temperature. It was freezing and now I am sick.

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