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Cheap flights from St. Louis to Prague from $413

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 8/18. 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 - 4:05 pm
STL
-
PRG
14h 01m
2 stops
Lufthansa Logo
4:45 pm - 9:13 pm
PRG
-
STL
35h 28m
2 stops
$811Lufthansa
Tue, Dec 8 - Mon, Dec 14
United Airlines Logo
8:40 am - 5:55 pm
STL
-
PRG
26h 15m
2 stops
United Airlines Logo
1:45 pm - 7:40 pm
PRG
-
STL
36h 55m
2 stops
$823United Airlines
Wed, Nov 18 - Wed, Dec 2
Lufthansa Logo
3:40 pm - 9:40 am
STL
-
PRG
11h 00m
1 stop
Lufthansa Logo
4:45 pm - 11:25 pm
PRG
-
STL
37h 40m
2 stops
$824Lufthansa
Wed, Nov 18 - Wed, Dec 2
Finnair Logo
1:20 pm - 6:50 pm
STL
-
PRG
22h 30m
2 stops
Finnair Logo
7:35 pm - 11:59 pm
PRG
-
STL
35h 24m
2 stops
$826Finnair
Wed, Nov 18 - Wed, Dec 2
United Airlines Logo
3:40 pm - 10:45 am
STL
-
PRG
12h 05m
1 stop
United Airlines Logo
1:45 pm - 11:09 pm
PRG
-
STL
40h 24m
2 stops
$830United Airlines
Wed, Nov 18 - Wed, Dec 2
Lufthansa Logo
3:40 pm - 9:40 am
STL
-
PRG
11h 00m
1 stop
Lufthansa Logo
7:00 pm - 11:25 pm
PRG
-
STL
35h 25m
2 stops
$831Lufthansa
Wed, Nov 18 - Wed, Dec 2
Lufthansa Logo
3:40 pm - 9:40 am
STL
-
PRG
11h 00m
1 stop
Lufthansa Logo
7:00 pm - 11:25 pm
PRG
-
STL
35h 25m
2 stops
$832Lufthansa
Wed, Nov 18 - Wed, Dec 2
Lufthansa Logo
3:40 pm - 10:45 am
STL
-
PRG
12h 05m
1 stop
Lufthansa Logo
7:15 am - 1:45 pm
PRG
-
STL
13h 30m
1 stop
$834Lufthansa
Wed, Nov 18 - Wed, Dec 2
Air Canada Logo
8:55 am - 10:50 am
STL
-
PRG
18h 55m
1 stop
Air Canada Logo
12:30 pm - 3:38 pm
PRG
-
STL
34h 08m
2 stops
$837Air Canada
Tue, Aug 11 - Wed, Aug 19
Air Canada Logo
12:10 pm - 12:40 pm
STL
-
PRG
17h 30m
2 stops
Air Canada Logo
12:30 pm - 12:02 pm
PRG
-
STL
30h 32m
2 stops
$840Air Canada
Mon, Aug 10 - Wed, Aug 19

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British Airways flights from St. Louis to Prague

Our best British Airways deals on St. Louis to Prague flight tickets
British Airways
Aug 11
STL9:35 pmLambert-St Louis
11h 50m
1 stop
PRG4:25 pmVáclav Havel Prague
Aug 19
PRG10:15 amVáclav Havel Prague
20h 19m
1 stop
STL11:34 pmLambert-St Louis
$845
British Airways
Aug 12
STL4:54 pmLambert-St Louis
15h 51m
2 stops
PRG3:45 pmVáclav Havel Prague
Aug 20
PRG10:15 amVáclav Havel Prague
20h 19m
1 stop
STL11:34 pmLambert-St Louis
$846
British Airways
Aug 11
STL9:35 pmLambert-St Louis
11h 50m
1 stop
PRG4:25 pmVáclav Havel Prague
Aug 18
PRG10:15 amVáclav Havel Prague
20h 19m
1 stop
STL11:34 pmLambert-St Louis
$893

Lufthansa flights from St. Louis to Prague

Our best Lufthansa deals on St. Louis to Prague flight tickets
Lufthansa
Dec 8
STL7:04 pmLambert-St Louis
14h 01m
2 stops
PRG4:05 pmVáclav Havel Prague
Dec 14
PRG4:45 pmVáclav Havel Prague
35h 28m
2 stops
STL9:13 pmLambert-St Louis
$811
Lufthansa
Nov 18
STL3:40 pmLambert-St Louis
11h 00m
1 stop
PRG9:40 amVáclav Havel Prague
Dec 2
PRG4:45 pmVáclav Havel Prague
37h 40m
2 stops
STL11:25 pmLambert-St Louis
$824
Lufthansa
Nov 18
STL3:40 pmLambert-St Louis
11h 00m
1 stop
PRG9:40 amVáclav Havel Prague
Dec 2
PRG7:00 pmVáclav Havel Prague
35h 25m
2 stops
STL11:25 pmLambert-St Louis
$831

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 16, 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

Tue 12/8

7:04 pm-4:05 pm

2 stops14h 01m

Václav Havel Prague

Mon 12/14

4:45 pm-9:13 pm

2 stops35h 28m

$811

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

8:40 am-5:55 pm

2 stops26h 15m

Václav Havel Prague

Wed 12/2

1:45 pm-7:40 pm

2 stops36h 55m

$823

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

3:40 pm-9:40 am

1 stop11h 00m

Václav Havel Prague

Wed 12/2

4:45 pm-11:25 pm

2 stops37h 40m

$824

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

1:20 pm-6:50 pm

2 stops22h 30m

Václav Havel Prague

Wed 12/2

7:35 pm-11:59 pm

2 stops35h 24m

$826

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

3:40 pm-10:45 am

1 stop12h 05m

Václav Havel Prague

Wed 12/2

1:45 pm-11:09 pm

2 stops40h 24m

$830

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

3:40 pm-9:40 am

1 stop11h 00m

Václav Havel Prague

Wed 12/2

7:00 pm-11:25 pm

2 stops35h 25m

$831

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

3:40 pm-9:40 am

1 stop11h 00m

Václav Havel Prague

Wed 12/2

7:00 pm-11:25 pm

2 stops35h 25m

$832
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 11/18

3:40 pm-10:45 am

1 stop12h 05m

Václav Havel Prague

Wed 12/2

7:15 am-1:45 pm

1 stop13h 30m

$834

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 8/11

8:55 am-10:50 am

1 stop18h 55m

Václav Havel Prague

Wed 8/19

12:30 pm-3:38 pm

2 stops34h 08m

$837

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 8/10

12:10 pm-12:40 pm

2 stops17h 30m

Václav Havel Prague

Wed 8/19

12:30 pm-12:02 pm

2 stops30h 32m

$840

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $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

17h 30m

Direct flights

None
The fastest flight from St. Louis to Prague takes 17h 30m
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 17h 30m, 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
9,988 reviews
Search United Airlines flights
American AirlinesPriceFrom $511Free CancellationRating
7.1
11,807 reviews
Search American Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
8,136 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.8
8,472 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
United Airlines
Delta
American Airlines