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Cheap flights from St. Louis to Prague from $545

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 6/15. 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
1:02 pm - 9:40 am
STL
-
PRG
37h 38m
2 stops
Scandinavian Airlines Logo
10:20 am - 9:19 pm
PRG
-
STL
17h 59m
2 stops
$735Scandinavian Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
8:30 am - 11:00 am
STL
-
PRG
19h 30m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$768United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
9:10 am - 4:05 pm
STL
-
PRG
23h 55m
2 stops
United Airlines Logo
6:00 am - 8:25 pm
PRG
-
STL
21h 25m
2 stops
$771United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
8:30 am - 5:55 pm
STL
-
PRG
26h 25m
2 stops
United Airlines Logo
6:00 am - 8:25 pm
PRG
-
STL
21h 25m
2 stops
$772United Airlines
Wed, Apr 29 - Fri, May 8
Scandinavian Airlines Logo
11:42 am - 9:40 am
STL
-
PRG
38h 58m
2 stops
Scandinavian Airlines Logo
10:20 am - 9:19 pm
PRG
-
STL
17h 59m
2 stops
$773Scandinavian Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
6:30 am - 10:50 am
STL
-
PRG
21h 20m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$780United Airlines
Wed, Apr 29 - Fri, May 8
Multiple Airlines Logo
5:21 pm - 6:45 pm
STL
-
PRG
18h 24m
2 stops
Multiple Airlines Logo
8:40 am - 10:59 pm
PRG
-
STL
21h 19m
2 stops
$795Multiple Airlines
Wed, Apr 29 - Fri, May 8
Multiple Airlines Logo
4:05 pm - 4:25 pm
STL
-
PRG
17h 20m
2 stops
Multiple Airlines Logo
6:20 am - 3:25 pm
PRG
-
STL
16h 05m
2 stops
$801Multiple Airlines
Sun, Apr 5 - Tue, Apr 21
Delta Logo
4:41 pm - 7:35 pm
STL
-
PRG
19h 54m
2 stops
Delta Logo
6:00 am - 8:44 pm
PRG
-
STL
21h 44m
2 stops
$818Delta
Sun, Apr 19 - Tue, May 5
Lufthansa Logo
3:30 pm - 5:55 pm
STL
-
PRG
19h 25m
1 stop
Lufthansa Logo
2:20 pm - 4:39 pm
PRG
-
STL
33h 19m
2 stops
$822Lufthansa
Sun, Apr 19 - Tue, May 5

American Airlines flights from St. Louis to Prague

Our best American Airlines deals on St. Louis to Prague flight tickets
American Airlines
May 4
STL4:30 pmLambert-St Louis
17h 30m
2 stops
PRG5:00 pmVáclav Havel Prague
May 15
PRG11:35 amVáclav Havel Prague
19h 21m
2 stops
STL11:56 pmLambert-St Louis
$913
American Airlines
Jul 7
STL11:20 amLambert-St Louis
13h 55m
1 stop
PRG8:15 amVáclav Havel Prague
Jul 17
PRG10:15 amVáclav Havel Prague
13h 48m
1 stop
STL5:03 pmLambert-St Louis
$973
American Airlines
Jul 7
STL11:20 amLambert-St Louis
13h 55m
1 stop
PRG8:15 amVáclav Havel Prague
Jul 17
PRG10:15 amVáclav Havel Prague
13h 48m
1 stop
STL5:03 pmLambert-St Louis
$974

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Apr 29
STL8:30 amLambert-St Louis
19h 30m
2 stops
PRG11:00 amVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
14h 25m
1 stop
STL1:25 pmLambert-St Louis
$768
United Airlines
Apr 29
STL9:10 amLambert-St Louis
23h 55m
2 stops
PRG4:05 pmVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
21h 25m
2 stops
STL8:25 pmLambert-St Louis
$771
United Airlines
Apr 29
STL8:30 amLambert-St Louis
26h 25m
2 stops
PRG5:55 pmVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
21h 25m
2 stops
STL8:25 pmLambert-St Louis
$772

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 10, 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 4/21

1:02 pm-9:40 am

2 stops37h 38m

Václav Havel Prague

Tue 4/28

10:20 am-9:19 pm

2 stops17h 59m

$735

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

8:30 am-11:00 am

2 stops19h 30m

Václav Havel Prague

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

$768

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

9:10 am-4:05 pm

2 stops23h 55m

Václav Havel Prague

Fri 5/8

6:00 am-8:25 pm

2 stops21h 25m

$771

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

8:30 am-5:55 pm

2 stops26h 25m

Václav Havel Prague

Fri 5/8

6:00 am-8:25 pm

2 stops21h 25m

$772

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 4/21

11:42 am-9:40 am

2 stops38h 58m

Václav Havel Prague

Tue 4/28

10:20 am-9:19 pm

2 stops17h 59m

$773

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

6:30 am-10:50 am

2 stops21h 20m

Václav Havel Prague

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

$780

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

5:21 pm-6:45 pm

2 stops18h 24m

Václav Havel Prague

Fri 5/8

8:40 am-10:59 pm

2 stops21h 19m

$795
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 4/5

4:05 pm-4:25 pm

2 stops17h 20m

Václav Havel Prague

Tue 4/21

6:20 am-3:25 pm

2 stops16h 05m

$801

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 4/19

4:41 pm-7:35 pm

2 stops19h 54m

Václav Havel Prague

Tue 5/5

6:00 am-8:44 pm

2 stops21h 44m

$818

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sun 4/19

3:30 pm-5:55 pm

1 stop19h 25m

Václav Havel Prague

Tue 5/5

2:20 pm-4:39 pm

2 stops33h 19m

$822

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 30% 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

  • 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 $500Free CancellationRating
7.4
9,409 reviews
Search United Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
7,840 reviews
Search Lufthansa flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,276 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