Cheap flights from Prague to St. Louis from $727

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Prague to St. Louis departing on 3/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
7:35 am - 1:55 pm
PRG
-
STL
13h 20m1 stop
Lufthansa Logo
1:15 pm - 1:05 pm
STL
-
PRG
16h 50m2 stops
$911Lufthansa
Fri, Jan 30 - Fri, Feb 6
Lufthansa Logo
10:20 am - 11:59 pm
PRG
-
STL
20h 39m2 stops
Lufthansa Logo
6:40 pm - 4:05 pm
STL
-
PRG
14h 25m2 stops
$953Lufthansa
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
7:35 am - 8:23 pm
PRG
-
STL
19h 48m2 stops
United Airlines Logo
3:15 pm - 1:55 pm
STL
-
PRG
15h 40m2 stops
$958United Airlines
Thu, Feb 26 - Mon, Mar 2
Lufthansa Logo
6:15 am - 1:55 pm
PRG
-
STL
14h 40m2 stops
Lufthansa Logo
6:35 pm - 2:15 pm
STL
-
PRG
36h 40m2 stops
$1,097Lufthansa
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
6:15 am - 9:43 pm
PRG
-
STL
22h 28m2 stops
United Airlines Logo
6:35 pm - 10:25 pm
STL
-
PRG
20h 50m2 stops
$1,155United Airlines
Wed, Dec 31 - Sun, Jan 4
Lufthansa Logo
7:30 am - 1:55 pm
PRG
-
STL
13h 25m1 stop
Lufthansa Logo
1:05 pm - 9:50 am
STL
-
PRG
13h 45m2 stops
$1,193Lufthansa
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
7:30 am - 1:55 pm
PRG
-
STL
13h 25m1 stop
United Airlines Logo
6:35 pm - 10:25 pm
STL
-
PRG
20h 50m2 stops
$1,207United Airlines
Wed, Dec 31 - Sun, Jan 4
Multiple Airlines Logo
8:05 am - 11:59 pm
PRG
-
STL
22h 54m3 stops
Multiple Airlines Logo
4:05 pm - 11:30 am
STL
-
PRG
36h 25m2 stops
$1,396Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
8:05 am - 11:59 pm
PRG
-
STL
22h 54m3 stops
Multiple Airlines Logo
4:05 pm - 9:05 pm
STL
-
PRG
22h 00m3 stops
$1,431Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Lufthansa Logo
7:30 am - 1:55 pm
PRG
-
STL
13h 25m1 stop
Lufthansa Logo
3:50 pm - 9:50 am
STL
-
PRG
11h 00m1 stop
$1,572Lufthansa
Wed, Dec 31 - Sun, Jan 4

Lufthansa flights from Prague to St. Louis

Our best Lufthansa deals on Prague to St. Louis flight tickets
Lufthansa
Jan 30
PRG7:35 amVáclav Havel Prague
13h 20m
1 stop
STL1:55 pmLambert-St Louis
Feb 6
STL1:15 pmLambert-St Louis
16h 50m
2 stops
PRG1:05 pmVáclav Havel Prague
Lufthansa
Jan 30
PRG10:20 amVáclav Havel Prague
20h 39m
2 stops
STL11:59 pmLambert-St Louis
Feb 6
STL6:40 pmLambert-St Louis
14h 25m
2 stops
PRG4:05 pmVáclav Havel Prague
Lufthansa
Dec 31
PRG6:15 amVáclav Havel Prague
14h 40m
2 stops
STL1:55 pmLambert-St Louis
Jan 4
STL6:35 pmLambert-St Louis
36h 40m
2 stops
PRG2:15 pmVáclav Havel Prague

United Airlines flights from Prague to St. Louis

Our best United Airlines deals on Prague to St. Louis flight tickets
United Airlines
Feb 26
PRG7:35 amVáclav Havel Prague
18h 39m
2 stops
STL7:14 pmLambert-St Louis
Mar 2
STL3:15 pmLambert-St Louis
15h 40m
2 stops
PRG1:55 pmVáclav Havel Prague
United Airlines
Feb 26
PRG7:35 amVáclav Havel Prague
18h 39m
2 stops
STL7:14 pmLambert-St Louis
Mar 2
STL1:11 pmLambert-St Louis
17h 44m
2 stops
PRG1:55 pmVáclav Havel Prague
United Airlines
Dec 31
PRG6:15 amVáclav Havel Prague
22h 28m
2 stops
STL9:43 pmLambert-St Louis
Jan 4
STL6:35 pmLambert-St Louis
20h 50m
2 stops
PRG10:25 pmVáclav Havel Prague

momondo Fare Finder

 
Customize your flight search to find flights from Prague to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Prague to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Fri 1/30

7:35 am-1:55 pm

1 stop13h 20m

Lambert-St Louis

Fri 2/6

1:15 pm-1:05 pm

2 stops16h 50m

$911

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Fri 1/30

10:20 am-11:59 pm

2 stops20h 39m

Lambert-St Louis

Fri 2/6

6:40 pm-4:05 pm

2 stops14h 25m

$953

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Thu 2/26

7:35 am-8:23 pm

2 stops19h 48m

Lambert-St Louis

Mon 3/2

3:15 pm-1:55 pm

2 stops15h 40m

$958

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Wed 12/31

6:15 am-1:55 pm

2 stops14h 40m

Lambert-St Louis

Sun 1/4

6:35 pm-2:15 pm

2 stops36h 40m

$1,097

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Wed 12/31

6:15 am-9:43 pm

2 stops22h 28m

Lambert-St Louis

Sun 1/4

6:35 pm-10:25 pm

2 stops20h 50m

$1,155

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Wed 12/31

7:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Sun 1/4

1:05 pm-9:50 am

2 stops13h 45m

$1,193

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Wed 12/31

7:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Sun 1/4

6:35 pm-10:25 pm

2 stops20h 50m

$1,207

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Fri 1/30

8:05 am-11:59 pm

3 stops22h 54m

Lambert-St Louis

Fri 2/6

4:05 pm-11:30 am

2 stops36h 25m

$1,396

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Fri 1/30

8:05 am-11:59 pm

3 stops22h 54m

Lambert-St Louis

Fri 2/6

4:05 pm-9:05 pm

3 stops22h 00m

$1,431

PragueSt. Louis

PRG - STL

PRGSTL

Václav Havel Prague

Wed 12/31

7:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Sun 1/4

3:50 pm-9:50 am

1 stop11h 00m

$1,572

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Prague to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Monday when prices can be found for as low as $827. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,163. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Prague in the morning is the least expensive time of day to depart. momondo users have found prices as low as $828 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $964 per ticket.

When to book flights from Prague to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Prague to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Prague to St. Louis (PRG to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Prague to St. Louis

Fastest flight time

13h 20m

Direct flights

None
The fastest flight from Prague to St. Louis takes 13h 20m
There are no direct flights from Prague to St. Louis. There are no popular flight routes from Prague to St. Louis.
  • How far is Václav Havel Prague to Lambert-St Louis by plane?

    There are 4789.6 mi between Václav Havel Prague and Lambert-St Louis. By plane, this route typically takes 13h 20m.

  • When did momondo last update prices for flights from Václav Havel Prague Airport to Lambert-St Louis Airport?

    Prices for flights from Václav Havel Prague Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Václav Havel Prague Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Václav Havel Prague Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Prague to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Prague to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Prague to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Prague to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Prague to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Prague.

I’m not ready to book a flight from Prague to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Prague to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Sat 1/17
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