STL - PRG

$355 Find Cheap Flights from St. Louis to Prague

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Prague departing on 10/19. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Prague, 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 Prague, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$810
Typical prices: $1,199-$790
United Airlines
Tue 11/3Thu 11/5
STL - PRG • 2 stops
Cheapest one-way
$355
British Airways
Mon 10/19
STL - PRG • 2 stops
Top airlines
Cheapest • from $810 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Prague. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $846 (round-trip)
Shortest trip • 11h 52m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Prague!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Prague (STL-PRG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Prague 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 Prague

Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
1:27 pm - 4:05 pm
STL
-
PRG
19h 38m
2 stops
United Airlines Logo
2:50 pm - 3:30 pm
PRG
-
STL
31h 40m
2 stops
$810United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:30 am - 10:45 am
STL
-
PRG
21h 15m
3 stops
United Airlines Logo
6:50 am - 9:09 pm
PRG
-
STL
21h 19m
2 stops
$824United Airlines
Mon, Aug 17 - Mon, Aug 24
Scandinavian Airlines Logo
3:39 pm - 2:40 pm
STL
-
PRG
16h 01m
2 stops
Scandinavian Airlines Logo
10:20 am - 11:58 pm
PRG
-
STL
20h 38m
2 stops
$837Scandinavian Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
2:40 pm - 4:00 pm
STL
-
PRG
18h 20m
2 stops
Multiple Airlines Logo
11:30 am - 1:25 pm
PRG
-
STL
32h 55m
1 stop
$851Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Lufthansa Logo
3:30 pm - 5:40 pm
STL
-
PRG
19h 10m
1 stop
Lufthansa Logo
11:30 am - 1:25 pm
PRG
-
STL
32h 55m
1 stop
$873Lufthansa
Thu, Sep 10 - Fri, Sep 18
British Airways Logo
11:09 am - 8:15 am
STL
-
PRG
14h 06m
1 stop
British Airways Logo
10:15 am - 9:43 pm
PRG
-
STL
18h 28m
1 stop
$881British Airways
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
6:43 pm - 5:05 pm
STL
-
PRG
15h 22m
2 stops
American Airlines Logo
10:15 am - 9:43 pm
PRG
-
STL
18h 28m
1 stop
$888American Airlines
Wed, Jul 15 - Wed, Aug 19
United Airlines Logo
11:25 am - 4:00 pm
STL
-
PRG
21h 35m
2 stops
United Airlines Logo
12:30 pm - 11:38 pm
PRG
-
STL
42h 08m
2 stops
$890United Airlines
Fri, Nov 20 - Fri, Nov 27
Lufthansa Logo
3:40 pm - 2:00 pm
STL
-
PRG
15h 20m
1 stop
Lufthansa Logo
7:15 am - 1:45 pm
PRG
-
STL
13h 30m
1 stop
$891Lufthansa
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
6:30 am - 8:15 am
STL
-
PRG
18h 45m
1 stop
American Airlines Logo
10:15 am - 9:43 pm
PRG
-
STL
18h 28m
1 stop
$892American Airlines
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to Prague 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 Prague?

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 Prague departing in November.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Prague, 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 Prague is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,219 and $1,124 respectively.

Good to know

Low seasonApril
Cheapest flight$355
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 28% lower on average.
Flight from St. Louis to Prague

When to book flights from St. Louis to Prague

Are your dates flexible? Find out the best times to travel from St. Louis to Prague 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 Prague

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

    In the last 7 days, the lowest price for a flight from St. Louis to Prague was $355 for a one-way ticket and $810 for a round-trip.

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

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

  • Which airports will I be using when flying from St. Louis to Prague?

    St. Louis and Prague are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Václav Havel Prague.

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

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

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

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

  • Which is the best airline for flights from St. Louis to Prague, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Prague are Delta and United Airlines. With an average price for the route of $1,004 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $655 and an overall rating of 7.4.

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

    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 Prague.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Prague 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 Prague?

    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 Prague with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PRG 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 Prague?

    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 Prague 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 4 airlines serving from St. Louis to Prague

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Prague. 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 Prague? 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 8410 reviews
8.1Boarding
7.2Food
7.8Comfort
7.8Entertainment
8.5Crew
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

They made nearly everyone check their bag because the overhead bins are way too small. Extremely inconvenient

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Was put into a seat right behind the toilet that had no entertainment possible but did have plenty of leg room over noisy part of plane.

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Parents with permanently crying baby on board. Neither parents nor crew did anything to calm the baby. The food was extremely disappointing. Seafood stew was very, very small! Not even appetizer size! Seat had a gap in the back. Had to use a pillow to fill it.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Everything you need to know for your flight from St. Louis to Prague

Information on your arrival and departure airports