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Cheap flights from St. Louis to Prague from $399

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.
Lufthansa Logo
7:04 pm - 6:20 pm
STL
-
PRG
16h 16m
2 stops
Lufthansa Logo
7:15 am - 1:45 pm
PRG
-
STL
13h 30m
1 stop
$782Lufthansa
Wed, Dec 2 - Fri, Dec 11
Lufthansa Logo
7:04 pm - 6:20 pm
STL
-
PRG
16h 16m
2 stops
Lufthansa Logo
10:20 am - 11:25 pm
PRG
-
STL
20h 05m
2 stops
$789Lufthansa
Wed, Dec 2 - Fri, Dec 11
Lufthansa Logo
7:04 pm - 6:20 pm
STL
-
PRG
16h 16m
2 stops
Lufthansa Logo
7:00 pm - 1:45 pm
PRG
-
STL
25h 45m
1 stop
$802Lufthansa
Wed, Dec 2 - Thu, Dec 10
Delta Logo
5:37 pm - 5:05 pm
STL
-
PRG
16h 28m
2 stops
Delta Logo
8:55 am - 8:51 pm
PRG
-
STL
18h 56m
2 stops
$814Delta
Wed, Dec 2 - Thu, Dec 10
Scandinavian Airlines Logo
1:40 pm - 2:40 pm
STL
-
PRG
18h 00m
2 stops
Scandinavian Airlines Logo
8:55 pm - 11:42 pm
PRG
-
STL
33h 47m
2 stops
$854Scandinavian Airlines
Thu, Sep 10 - Thu, Sep 17
Scandinavian Airlines Logo
1:40 pm - 2:40 pm
STL
-
PRG
18h 00m
2 stops
Scandinavian Airlines Logo
8:55 pm - 11:42 pm
PRG
-
STL
33h 47m
2 stops
$854Scandinavian Airlines
Thu, Sep 10 - Fri, Sep 18
United Airlines Logo
4:05 pm - 9:40 am
STL
-
PRG
34h 35m
2 stops
United Airlines Logo
2:50 pm - 3:26 pm
PRG
-
STL
31h 36m
2 stops
$878United Airlines
Sat, Dec 12 - Sat, Dec 19
United Airlines Logo
4:05 pm - 10:45 am
STL
-
PRG
35h 40m
2 stops
United Airlines Logo
2:50 pm - 1:45 pm
PRG
-
STL
29h 55m
1 stop
$890United Airlines
Sat, Dec 12 - Sat, Dec 19
American Airlines Logo
9:40 pm - 11:15 pm
STL
-
PRG
18h 35m
1 stop
American Airlines Logo
10:15 am - 9:44 pm
PRG
-
STL
18h 29m
1 stop
$925American Airlines
Sun, Aug 30 - Tue, Sep 15
American Airlines Logo
1:25 pm - 1:35 pm
STL
-
PRG
17h 10m
2 stops
American Airlines Logo
10:15 am - 9:44 pm
PRG
-
STL
18h 29m
1 stop
$929American Airlines
Sun, Aug 30 - Tue, Sep 15

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Air Canada flights from St. Louis to Prague

Our best Air Canada deals on St. Louis to Prague flight tickets
Air Canada
Aug 23
STL2:40 pmLambert-St Louis
13h 10m
1 stop
PRG10:50 amVáclav Havel Prague
Aug 30
PRG12:30 pmVáclav Havel Prague
14h 54m
1 stop
STL8:24 pmLambert-St Louis
$933
Air Canada
Dec 25
STL4:05 pmLambert-St Louis
33h 40m
2 stops
PRG8:45 amVáclav Havel Prague
Jan 1
PRG2:50 pmVáclav Havel Prague
31h 36m
2 stops
STL3:26 pmLambert-St Louis
$997

Scandinavian Airlines flights from St. Louis to Prague

Our best Scandinavian Airlines deals on St. Louis to Prague flight tickets
Scandinavian Airlines
Sep 10
STL1:40 pmLambert-St Louis
18h 00m
2 stops
PRG2:40 pmVáclav Havel Prague
Sep 17
PRG8:55 pmVáclav Havel Prague
33h 47m
2 stops
STL11:42 pmLambert-St Louis
$854
Scandinavian Airlines
Sep 10
STL1:40 pmLambert-St Louis
18h 00m
2 stops
PRG2:40 pmVáclav Havel Prague
Sep 18
PRG10:20 amVáclav Havel Prague
20h 22m
2 stops
STL11:42 pmLambert-St Louis
$856

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 July 29, 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
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 12/2

7:04 pm-6:20 pm

2 stops16h 16m

Václav Havel Prague

Fri 12/11

7:15 am-1:45 pm

1 stop13h 30m

$782

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 12/2

7:04 pm-6:20 pm

2 stops16h 16m

Václav Havel Prague

Fri 12/11

10:20 am-11:25 pm

2 stops20h 05m

$789

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 12/2

7:04 pm-6:20 pm

2 stops16h 16m

Václav Havel Prague

Thu 12/10

7:00 pm-1:45 pm

1 stop25h 45m

$802

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 12/2

5:37 pm-5:05 pm

2 stops16h 28m

Václav Havel Prague

Thu 12/10

8:55 am-8:51 pm

2 stops18h 56m

$814

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

1:40 pm-2:40 pm

2 stops18h 00m

Václav Havel Prague

Thu 9/17

8:55 pm-11:42 pm

2 stops33h 47m

$854

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

1:40 pm-2:40 pm

2 stops18h 00m

Václav Havel Prague

Fri 9/18

8:55 pm-11:42 pm

2 stops33h 47m

$854

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 12/12

4:05 pm-9:40 am

2 stops34h 35m

Václav Havel Prague

Sat 12/19

2:50 pm-3:26 pm

2 stops31h 36m

$878

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 12/12

4:05 pm-10:45 am

2 stops35h 40m

Václav Havel Prague

Sat 12/19

2:50 pm-1:45 pm

1 stop29h 55m

$890

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 8/30

9:40 pm-11:15 pm

1 stop18h 35m

Václav Havel Prague

Tue 9/15

10:15 am-9:44 pm

1 stop18h 29m

$925

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 8/30

1:25 pm-1:35 pm

2 stops17h 10m

Václav Havel Prague

Tue 9/15

10:15 am-9:44 pm

1 stop18h 29m

$929

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

Prices are currently low for flights on this route.

Typical prices usually range from $837 to $939.
The lowest price recently found on this route was $782.

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 $620.

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

You could potentially save up to 3% 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

13h 32m

Direct flights

None
The fastest flight from St. Louis to Prague takes 13h 32m
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 13h 32m, 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 $500Free CancellationRating
7.4
10,047 reviews
Search United Airlines flights
American AirlinesPriceFrom $511Free CancellationRating
7.1
11,842 reviews
Search American Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
8,163 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.8
8,489 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.

An easier way to manage your Prague trip

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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
United Airlines
Delta
American Airlines