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Cheap flights from St. Louis to Prague from $410

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Prague departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Prague

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:42 pm - 2:40 pm
STL
-
PRG
15h 58m
2 stops
Scandinavian Airlines Logo
8:55 pm - 11:36 pm
PRG
-
STL
33h 41m
2 stops
$743Scandinavian Airlines
Thu, Sep 10 - Fri, Sep 18
Scandinavian Airlines Logo
12:52 pm - 9:40 am
STL
-
PRG
37h 48m
2 stops
Scandinavian Airlines Logo
8:55 pm - 11:36 pm
PRG
-
STL
33h 41m
2 stops
$840Scandinavian Airlines
Mon, Aug 31 - Thu, Sep 17
Scandinavian Airlines Logo
12:52 pm - 9:40 am
STL
-
PRG
37h 48m
2 stops
Scandinavian Airlines Logo
3:20 pm - 11:36 pm
PRG
-
STL
39h 16m
2 stops
$870Scandinavian Airlines
Mon, Aug 31 - Wed, Sep 16
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
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
$884British Airways
Thu, Sep 10 - Fri, Sep 18
Lufthansa Logo
3:30 pm - 10:50 am
STL
-
PRG
12h 20m
1 stop
Lufthansa Logo
6:10 am - 1:25 pm
PRG
-
STL
14h 15m
1 stop
$885Lufthansa
Tue, Sep 1 - Wed, Sep 16
United Airlines Logo
8:55 am - 10:50 am
STL
-
PRG
18h 55m
1 stop
United Airlines Logo
12:30 pm - 11:57 am
PRG
-
STL
30h 27m
2 stops
$886United Airlines
Tue, Sep 1 - Wed, Sep 16
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
Thu, Sep 10 - Fri, Sep 18
Air Canada Logo
12:10 pm - 11:00 am
STL
-
PRG
15h 50m
2 stops
Air Canada Logo
12:30 pm - 11:57 am
PRG
-
STL
30h 27m
2 stops
$889Air Canada
Tue, Sep 1 - Wed, Sep 16
United Airlines Logo
7:00 am - 12:45 pm
STL
-
PRG
22h 45m
3 stops
United Airlines Logo
12:30 pm - 11:57 am
PRG
-
STL
30h 27m
2 stops
$890United Airlines
Tue, Sep 1 - Wed, Sep 16

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Lufthansa flights from St. Louis to Prague

Our best Lufthansa deals on St. Louis to Prague flight tickets
Lufthansa
Sep 1
STL3:30 pmLambert-St Louis
12h 20m
1 stop
PRG10:50 amVáclav Havel Prague
Sep 16
PRG6:10 amVáclav Havel Prague
14h 15m
1 stop
STL1:25 pmLambert-St Louis
$885
Lufthansa
Aug 9
STL3:30 pmLambert-St Louis
12h 15m
1 stop
PRG10:45 amVáclav Havel Prague
Aug 31
PRG6:35 pmVáclav Havel Prague
25h 50m
1 stop
STL1:25 pmLambert-St Louis
$917
Lufthansa
Jul 28
STL7:05 pmLambert-St Louis
13h 55m
2 stops
PRG4:00 pmVáclav Havel Prague
Aug 6
PRG6:15 amVáclav Havel Prague
24h 14m
2 stops
STL11:29 pmLambert-St Louis
$921

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Sep 1
STL8:55 amLambert-St Louis
18h 55m
1 stop
PRG10:50 amVáclav Havel Prague
Sep 16
PRG12:30 pmVáclav Havel Prague
30h 27m
2 stops
STL11:57 amLambert-St Louis
$886
United Airlines
Jul 28
STL2:40 pmLambert-St Louis
13h 10m
1 stop
PRG10:50 amVáclav Havel Prague
Aug 6
PRG6:15 amVáclav Havel Prague
21h 07m
2 stops
STL8:22 pmLambert-St Louis
$927
United Airlines
Aug 6
STL7:05 pmLambert-St Louis
13h 55m
2 stops
PRG4:00 pmVáclav Havel Prague
Aug 10
PRG11:30 amVáclav Havel Prague
32h 55m
1 stop
STL1:25 pmLambert-St Louis
$994

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Prague 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 June 13, 2026.
Use the filters below to find and compare flights from St. Louis to Prague that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

3:42 pm-2:40 pm

2 stops15h 58m

Václav Havel Prague

Fri 9/18

8:55 pm-11:36 pm

2 stops33h 41m

$743

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 8/31

12:52 pm-9:40 am

2 stops37h 48m

Václav Havel Prague

Thu 9/17

8:55 pm-11:36 pm

2 stops33h 41m

$840

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 8/31

12:52 pm-9:40 am

2 stops37h 48m

Václav Havel Prague

Wed 9/16

3:20 pm-11:36 pm

2 stops39h 16m

$870

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

11:09 am-8:15 am

1 stop14h 06m

Václav Havel Prague

Fri 9/18

10:15 am-9:43 pm

1 stop18h 28m

$881

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

11:09 am-8:15 am

1 stop14h 06m

Václav Havel Prague

Fri 9/18

10:15 am-9:43 pm

1 stop18h 28m

$884
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

3:30 pm-10:50 am

1 stop12h 20m

Václav Havel Prague

Wed 9/16

6:10 am-1:25 pm

1 stop14h 15m

$885

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

8:55 am-10:50 am

1 stop18h 55m

Václav Havel Prague

Wed 9/16

12:30 pm-11:57 am

2 stops30h 27m

$886

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

6:43 pm-5:05 pm

2 stops15h 22m

Václav Havel Prague

Fri 9/18

10:15 am-9:43 pm

1 stop18h 28m

$888

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

12:10 pm-11:00 am

2 stops15h 50m

Václav Havel Prague

Wed 9/16

12:30 pm-11:57 am

2 stops30h 27m

$889

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

7:00 am-12:45 pm

3 stops22h 45m

Václav Havel Prague

Wed 9/16

12:30 pm-11:57 am

2 stops30h 27m

$890

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 Prague from

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

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 typical price of a round-trip flight between St. Louis and Prague?

What is the cheapest month to fly to Prague?

In general, January is the cheapest month to fly from St. Louis to Prague. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Prague during the month of January, then departing from St. Louis during the month April is also very affordable. Most momondo users find prices during this month for around $614.

Can stopping save me money on St. Louis to Prague flights?

You could potentially save up to 28% on your flight if you consider stops on a St. Louis to Prague flight.

When to book flights from St. Louis to Prague

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

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

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

Fastest flight time

12h 45m

Direct flights

None
The fastest flight from St. Louis to Prague takes 12h 45m
There are no direct flights from St. Louis to Prague. There are no popular flight routes from St. Louis to Prague.
Search flight deals

Frequently asked questions about flying from St. Louis to Prague

  • How far is Lambert-St Louis to Václav Havel Prague by plane?

    Lambert-St Louis and Václav Havel Prague are 4789.6 mi apart from one another. Flights usually cover this in 12h 45m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Lambert-St Louis Airport to Václav Havel Prague Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Václav Havel Prague Airport?

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

  • What documentation or ID do you need to fly to Václav Havel Prague Airport?

    The travel and health documents you'll need for your trip to Václav Havel Prague Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Václav Havel Prague Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Prague?

Best airlines flying from St. Louis to Prague

Compare and see reviews for airlines that fly from St. Louis to Prague with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $409Free CancellationRating
7.4
9,814 reviews
Search United Airlines flights
American AirlinesPriceFrom $511Free CancellationRating
7.1
11,650 reviews
Search American Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
8,057 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,406 reviews
Search Delta flights

Traveling to a place near Prague?

Book flights to Prague if you plan to visit one of these locations
Český Krumlov
Pilsen
Liberec

Why use momondo?

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

It is quick and easy to find St. Louis to Prague flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Prague that suits you.

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

Yes. All flights to Prague from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for St. Louis to Prague flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to Prague now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Prague and let you know when they change.

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Fly your favorite airline to Prague

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Lufthansa
Delta
United Airlines
American Airlines