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Cheap flights from St. Louis to Prague from $428

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 7/30. 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
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.
British Airways Logo
9:35 pm - 10:50 pm
STL
-
PRG
18h 15m
1 stop
British Airways Logo
10:15 am - 11:23 pm
PRG
-
STL
20h 08m
1 stop
$880British Airways
Fri, Aug 21 - Fri, Aug 28
Multiple Airlines Logo
2:40 pm - 2:45 pm
STL
-
PRG
17h 05m
2 stops
Multiple Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$882Multiple Airlines
Thu, Sep 10 - Fri, Sep 18
British Airways Logo
11:18 am - 8:15 am
STL
-
PRG
13h 57m
1 stop
British Airways Logo
10:15 am - 9:23 pm
PRG
-
STL
18h 08m
1 stop
$887British Airways
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
8:07 pm - 5:05 pm
STL
-
PRG
13h 58m
2 stops
American Airlines Logo
10:15 am - 5:11 pm
PRG
-
STL
13h 56m
1 stop
$888American Airlines
Thu, Sep 10 - Fri, Sep 18
American Airlines Logo
3:25 pm - 1:20 pm
STL
-
PRG
14h 55m
2 stops
American Airlines Logo
10:15 am - 11:23 pm
PRG
-
STL
20h 08m
1 stop
$889American Airlines
Fri, Aug 21 - Fri, Aug 28
Iberia Logo
11:18 am - 8:15 am
STL
-
PRG
13h 57m
1 stop
Iberia Logo
10:15 am - 9:23 pm
PRG
-
STL
18h 08m
1 stop
$892Iberia
Thu, Sep 10 - Fri, Sep 18
Delta Logo
6:00 am - 9:00 am
STL
-
PRG
20h 00m
2 stops
Delta Logo
11:00 am - 11:37 pm
PRG
-
STL
19h 37m
2 stops
$896Delta
Thu, Sep 10 - Fri, Sep 18
Delta Logo
6:00 am - 9:00 am
STL
-
PRG
20h 00m
2 stops
Delta Logo
11:00 am - 11:37 pm
PRG
-
STL
19h 37m
2 stops
$897Delta
Thu, Sep 10 - Fri, Sep 18
Iberia Logo
8:00 pm - 2:50 pm
STL
-
PRG
35h 50m
2 stops
Iberia Logo
3:35 pm - 8:19 pm
PRG
-
STL
35h 44m
2 stops
$908Iberia
Wed, Aug 5 - Wed, Aug 12
American Airlines Logo
6:03 am - 8:15 am
STL
-
PRG
19h 12m
1 stop
American Airlines Logo
10:15 am - 11:23 pm
PRG
-
STL
20h 08m
1 stop
$924American Airlines
Wed, Aug 5 - Wed, Aug 12

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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
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
$1,032
Air Canada
Jul 10
STL12:10 pmLambert-St Louis
15h 50m
2 stops
PRG11:00 amVáclav Havel Prague
Aug 12
PRG11:30 amVáclav Havel Prague
38h 12m
2 stops
STL6:42 pmLambert-St Louis
$1,036
Air Canada
Jun 8
STL1:05 pmLambert-St Louis
14h 55m
2 stops
PRG11:00 amVáclav Havel Prague
Jun 15
PRG2:20 pmVáclav Havel Prague
37h 05m
2 stops
STL8:25 pmLambert-St Louis
$1,058

American Airlines flights from St. Louis to Prague

Our best American Airlines deals on St. Louis to Prague flight tickets
American Airlines
Sep 10
STL8:07 pmLambert-St Louis
13h 58m
2 stops
PRG5:05 pmVáclav Havel Prague
Sep 18
PRG10:15 amVáclav Havel Prague
13h 56m
1 stop
STL5:11 pmLambert-St Louis
$888
American Airlines
Aug 21
STL3:25 pmLambert-St Louis
14h 55m
2 stops
PRG1:20 pmVáclav Havel Prague
Aug 28
PRG10:15 amVáclav Havel Prague
20h 08m
1 stop
STL11:23 pmLambert-St Louis
$889
American Airlines
Aug 5
STL6:03 amLambert-St Louis
19h 12m
1 stop
PRG8:15 amVáclav Havel Prague
Aug 12
PRG10:15 amVáclav Havel Prague
20h 08m
1 stop
STL11:23 pmLambert-St Louis
$924

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 April 26, 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

Fri 8/21

9:35 pm-10:50 pm

1 stop18h 15m

Václav Havel Prague

Fri 8/28

10:15 am-11:23 pm

1 stop20h 08m

$880

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

2:40 pm-2:45 pm

2 stops17h 05m

Václav Havel Prague

Fri 9/18

6:00 am-1:25 pm

1 stop14h 25m

$882

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

11:18 am-8:15 am

1 stop13h 57m

Václav Havel Prague

Fri 9/18

10:15 am-9:23 pm

1 stop18h 08m

$887
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

8:07 pm-5:05 pm

2 stops13h 58m

Václav Havel Prague

Fri 9/18

10:15 am-5:11 pm

1 stop13h 56m

$888

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Fri 8/21

3:25 pm-1:20 pm

2 stops14h 55m

Václav Havel Prague

Fri 8/28

10:15 am-11:23 pm

1 stop20h 08m

$889

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

11:18 am-8:15 am

1 stop13h 57m

Václav Havel Prague

Fri 9/18

10:15 am-9:23 pm

1 stop18h 08m

$892

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

6:00 am-9:00 am

2 stops20h 00m

Václav Havel Prague

Fri 9/18

11:00 am-11:37 pm

2 stops19h 37m

$896

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/10

6:00 am-9:00 am

2 stops20h 00m

Václav Havel Prague

Fri 9/18

11:00 am-11:37 pm

2 stops19h 37m

$897

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 8/5

8:00 pm-2:50 pm

2 stops35h 50m

Václav Havel Prague

Wed 8/12

3:35 pm-8:19 pm

2 stops35h 44m

$908

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 8/5

6:03 am-8:15 am

1 stop19h 12m

Václav Havel Prague

Wed 8/12

10:15 am-11:23 pm

1 stop20h 08m

$924

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?

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

You could potentially save up to 33% 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 56m

Direct flights

None
The fastest flight from St. Louis to Prague takes 13h 56m
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 56m, 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
9,658 reviews
Search United Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
7,954 reviews
Search Lufthansa flights
British AirwaysPriceFrom $582Free CancellationRating
6.7
7,917 reviews
Search British Airways flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,459 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
British Airways