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Cheap flights from St. Louis to Prague from $448

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 7/1. 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

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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
12:52 pm - 2:40 pm
STL
-
PRG
18h 48m
2 stops
Scandinavian Airlines Logo
3:20 pm - 11:58 pm
PRG
-
STL
39h 38m
2 stops
$742Scandinavian Airlines
Mon, Aug 17 - Wed, Sep 2
United Airlines Logo
1:27 pm - 4:05 pm
STL
-
PRG
19h 38m
2 stops
United Airlines Logo
11:30 am - 3:30 pm
PRG
-
STL
35h 00m
2 stops
$810United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:40 am - 5:55 pm
STL
-
PRG
28h 15m
2 stops
United Airlines Logo
11:30 am - 3:30 pm
PRG
-
STL
35h 00m
2 stops
$811United 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
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
$825United Airlines
Tue, Nov 3 - Thu, Nov 5
Scandinavian Airlines Logo
3:44 pm - 8:50 pm
STL
-
PRG
22h 06m
2 stops
Scandinavian Airlines Logo
10:20 am - 11:58 pm
PRG
-
STL
20h 38m
2 stops
$840Scandinavian Airlines
Sat, Aug 15 - Thu, Sep 3
Air Canada Logo
12:10 pm - 10:50 am
STL
-
PRG
39h 40m
2 stops
Air Canada Logo
12:30 pm - 12:13 pm
PRG
-
STL
30h 43m
2 stops
$877Air Canada
Mon, Sep 21 - Wed, Sep 30
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
Lufthansa Logo
3:30 pm - 10:55 am
STL
-
PRG
12h 25m
1 stop
Lufthansa Logo
6:10 am - 1:25 pm
PRG
-
STL
14h 15m
1 stop
$885Lufthansa
Mon, Aug 17 - Wed, Sep 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
$886Air Canada
Sun, Aug 16 - Wed, Sep 2

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Nov 3
STL1:27 pmLambert-St Louis
19h 38m
2 stops
PRG4:05 pmVáclav Havel Prague
Nov 5
PRG11:30 amVáclav Havel Prague
35h 00m
2 stops
STL3:30 pmLambert-St Louis
$810
United Airlines
Nov 3
STL6:40 amLambert-St Louis
28h 15m
2 stops
PRG5:55 pmVáclav Havel Prague
Nov 5
PRG11:30 amVáclav Havel Prague
35h 00m
2 stops
STL3:30 pmLambert-St Louis
$811
United Airlines
Nov 3
STL6:30 amLambert-St Louis
21h 15m
3 stops
PRG10:45 amVáclav Havel Prague
Nov 5
PRG6:50 amVáclav Havel Prague
21h 19m
2 stops
STL9:09 pmLambert-St Louis
$824

Lufthansa flights from St. Louis to Prague

Our best Lufthansa deals on St. Louis to Prague flight tickets
Lufthansa
Aug 17
STL3:30 pmLambert-St Louis
12h 25m
1 stop
PRG10:55 amVáclav Havel Prague
Sep 2
PRG6:10 amVáclav Havel Prague
14h 15m
1 stop
STL1:25 pmLambert-St Louis
$885
Lufthansa
Aug 16
STL2:40 pmLambert-St Louis
13h 10m
1 stop
PRG10:50 amVáclav Havel Prague
Sep 2
PRG6:10 amVáclav Havel Prague
14h 15m
1 stop
STL1:25 pmLambert-St Louis
$891
Lufthansa
Aug 16
STL12:59 pmLambert-St Louis
12h 56m
2 stops
PRG8:55 amVáclav Havel Prague
Sep 1
PRG6:10 amVáclav Havel Prague
14h 15m
1 stop
STL1:25 pmLambert-St Louis
$895

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 4, 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

Mon 8/17

12:52 pm-2:40 pm

2 stops18h 48m

Václav Havel Prague

Wed 9/2

3:20 pm-11:58 pm

2 stops39h 38m

$742

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 11/3

1:27 pm-4:05 pm

2 stops19h 38m

Václav Havel Prague

Thu 11/5

11:30 am-3:30 pm

2 stops35h 00m

$810

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 11/3

6:40 am-5:55 pm

2 stops28h 15m

Václav Havel Prague

Thu 11/5

11:30 am-3:30 pm

2 stops35h 00m

$811

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 11/3

6:30 am-10:45 am

3 stops21h 15m

Václav Havel Prague

Thu 11/5

6:50 am-9:09 pm

2 stops21h 19m

$824

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 11/3

6:30 am-10:45 am

3 stops21h 15m

Václav Havel Prague

Thu 11/5

6:50 am-9:09 pm

2 stops21h 19m

$825

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 8/15

3:44 pm-8:50 pm

2 stops22h 06m

Václav Havel Prague

Thu 9/3

10:20 am-11:58 pm

2 stops20h 38m

$840

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 9/21

12:10 pm-10:50 am

2 stops39h 40m

Václav Havel Prague

Wed 9/30

12:30 pm-12:13 pm

2 stops30h 43m

$877

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
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 8/17

3:30 pm-10:55 am

1 stop12h 25m

Václav Havel Prague

Wed 9/2

6:10 am-1:25 pm

1 stop14h 15m

$885

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 8/16

8:55 am-10:50 am

1 stop18h 55m

Václav Havel Prague

Wed 9/2

12:30 pm-3:38 pm

2 stops34h 08m

$886

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?

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 35% 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 10m

Direct flights

None
The fastest flight from St. Louis to Prague takes 13h 10m
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 10m, 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
9,772 reviews
Search United Airlines flights
American AirlinesPriceFrom $511Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,399 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