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Cheap flights from St. Louis to Prague from $309

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 9/1. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:42 pm - 8:15 pm
STL
-
PRG
21h 33m
2 stops
Scandinavian Airlines Logo
10:20 am - 11:37 pm
PRG
-
STL
20h 17m
2 stops
$664Scandinavian Airlines
Thu, Sep 10 - Fri, Sep 18
Scandinavian Airlines Logo
3:42 pm - 8:15 pm
STL
-
PRG
21h 33m
2 stops
Scandinavian Airlines Logo
10:20 am - 11:37 pm
PRG
-
STL
20h 17m
2 stops
$745Scandinavian Airlines
Thu, Sep 10 - Fri, Sep 18
Scandinavian Airlines Logo
3:42 pm - 9:40 am
STL
-
PRG
34h 58m
2 stops
Scandinavian Airlines Logo
8:55 pm - 8:50 pm
PRG
-
STL
30h 55m
2 stops
$757Scandinavian Airlines
Thu, Sep 10 - Fri, Sep 18
Multiple Airlines Logo
3:30 pm - 5:50 pm
STL
-
PRG
19h 20m
1 stop
Multiple Airlines Logo
12:30 pm - 8:00 pm
PRG
-
STL
14h 30m
1 stop
$773Multiple Airlines
Tue, Sep 1 - Wed, Sep 16
Multiple Airlines Logo
3:30 pm - 5:50 pm
STL
-
PRG
19h 20m
1 stop
Multiple Airlines Logo
10:25 am - 6:41 pm
PRG
-
STL
15h 16m
2 stops
$774Multiple Airlines
Tue, Sep 1 - Wed, Sep 16
British Airways Logo
5:21 pm - 5:05 pm
STL
-
PRG
16h 44m
2 stops
British Airways Logo
7:05 am - 4:41 pm
PRG
-
STL
16h 36m
2 stops
$778British Airways
Wed, Apr 29 - Fri, May 8
Multiple Airlines Logo
12:10 pm - 11:00 am
STL
-
PRG
15h 50m
2 stops
Multiple Airlines Logo
6:15 am - 1:25 pm
PRG
-
STL
14h 10m
2 stops
$781Multiple Airlines
Tue, Sep 1 - Wed, Sep 16
United Airlines Logo
5:32 pm - 10:50 am
STL
-
PRG
34h 18m
2 stops
United Airlines Logo
12:30 pm - 12:49 pm
PRG
-
STL
31h 19m
2 stops
$786United Airlines
Sat, Aug 15 - Sat, Aug 22
British Airways Logo
6:55 pm - 10:50 pm
STL
-
PRG
20h 55m
2 stops
British Airways Logo
8:15 pm - 4:00 pm
PRG
-
STL
26h 45m
2 stops
$796British Airways
Mon, Apr 20 - Mon, Apr 27
Air Canada Logo
12:10 pm - 10:50 am
STL
-
PRG
39h 40m
2 stops
Air Canada Logo
12:30 pm - 8:02 pm
PRG
-
STL
14h 32m
1 stop
$802Air Canada
Sat, Aug 15 - Sat, Aug 22

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Aug 15
STL5:32 pmLambert-St Louis
34h 18m
2 stops
PRG10:50 amVáclav Havel Prague
Aug 22
PRG12:30 pmVáclav Havel Prague
31h 19m
2 stops
STL12:49 pmLambert-St Louis
$786
United Airlines
Jul 10
STL8:55 amLambert-St Louis
18h 55m
1 stop
PRG10:50 amVáclav Havel Prague
Aug 12
PRG11:30 amVáclav Havel Prague
38h 12m
2 stops
STL6:42 pmLambert-St Louis
$919
United Airlines
Jul 10
STL8:55 amLambert-St Louis
18h 55m
1 stop
PRG10:50 amVáclav Havel Prague
Aug 12
PRG2:35 pmVáclav Havel Prague
32h 03m
2 stops
STL3:38 pmLambert-St Louis
$927

Air Canada flights from St. Louis to Prague

Our best Air Canada deals on St. Louis to Prague flight tickets
Air Canada
Aug 15
STL12:10 pmLambert-St Louis
39h 40m
2 stops
PRG10:50 amVáclav Havel Prague
Aug 22
PRG12:30 pmVáclav Havel Prague
14h 32m
1 stop
STL8:02 pmLambert-St Louis
$802
Air Canada
Jul 10
STL8:55 amLambert-St Louis
18h 55m
1 stop
PRG10:50 amVáclav Havel Prague
Aug 12
PRG2:35 pmVáclav Havel Prague
35h 07m
2 stops
STL6:42 pmLambert-St Louis
$920
Air Canada
Jul 10
STL12:10 pmLambert-St Louis
15h 50m
2 stops
PRG11:00 amVáclav Havel Prague
Aug 12
PRG2:35 pmVáclav Havel Prague
35h 07m
2 stops
STL6:42 pmLambert-St Louis
$923

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 March 21, 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-8:15 pm

2 stops21h 33m

Václav Havel Prague

Fri 9/18

10:20 am-11:37 pm

2 stops20h 17m

$664

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

3:42 pm-8:15 pm

2 stops21h 33m

Václav Havel Prague

Fri 9/18

10:20 am-11:37 pm

2 stops20h 17m

$745

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

3:42 pm-9:40 am

2 stops34h 58m

Václav Havel Prague

Fri 9/18

8:55 pm-8:50 pm

2 stops30h 55m

$757

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

3:30 pm-5:50 pm

1 stop19h 20m

Václav Havel Prague

Wed 9/16

12:30 pm-8:00 pm

1 stop14h 30m

$773

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 9/1

3:30 pm-5:50 pm

1 stop19h 20m

Václav Havel Prague

Wed 9/16

10:25 am-6:41 pm

2 stops15h 16m

$774

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

5:21 pm-5:05 pm

2 stops16h 44m

Václav Havel Prague

Fri 5/8

7:05 am-4:41 pm

2 stops16h 36m

$778
Quickest round-trip

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

6:15 am-1:25 pm

2 stops14h 10m

$781

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 8/15

5:32 pm-10:50 am

2 stops34h 18m

Václav Havel Prague

Sat 8/22

12:30 pm-12:49 pm

2 stops31h 19m

$786

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 4/20

6:55 pm-10:50 pm

2 stops20h 55m

Václav Havel Prague

Mon 4/27

8:15 pm-4:00 pm

2 stops26h 45m

$796

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 8/15

12:10 pm-10:50 am

2 stops39h 40m

Václav Havel Prague

Sat 8/22

12:30 pm-8:02 pm

1 stop14h 32m

$802

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

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

13h 57m

Direct flights

None
The fastest flight from St. Louis to Prague takes 13h 57m
There are no direct flights from St. Louis to Prague. There are no popular flight routes from St. Louis to Prague.
Search flight deals

  • 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 57m, 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
9,452 reviews
Search United Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
7,859 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,313 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