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Cheap flights from St. Louis to Prague from $386

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 5/24. 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

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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.
United Airlines Logo
2:40 pm - 9:20 pm
STL
-
PRG
23h 40m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$699United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
2:40 pm - 9:20 pm
STL
-
PRG
23h 40m
2 stops
United Airlines Logo
6:00 am - 8:25 pm
PRG
-
STL
21h 25m
2 stops
$703United Airlines
Wed, Apr 29 - Fri, May 8
Delta Logo
5:59 pm - 7:35 pm
STL
-
PRG
18h 36m
2 stops
Delta Logo
6:00 am - 9:19 pm
PRG
-
STL
22h 19m
2 stops
$707Delta
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
9:10 am - 5:55 pm
STL
-
PRG
25h 45m
2 stops
United Airlines Logo
6:00 am - 8:04 pm
PRG
-
STL
45h 04m
2 stops
$708United Airlines
Tue, Apr 21 - Thu, Apr 30
Finnair Logo
5:21 pm - 6:45 pm
STL
-
PRG
18h 24m
2 stops
Finnair Logo
11:35 am - 10:19 pm
PRG
-
STL
17h 44m
2 stops
$711Finnair
Wed, Apr 29 - Fri, May 8
United Airlines Logo
9:10 am - 1:30 pm
STL
-
PRG
21h 20m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$712United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
4:05 pm - 5:30 pm
STL
-
PRG
18h 25m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$716United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
8:30 am - 4:05 pm
STL
-
PRG
24h 35m
2 stops
United Airlines Logo
1:25 pm - 7:22 pm
PRG
-
STL
36h 57m
2 stops
$722United Airlines
Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
12:15 pm - 11:00 am
STL
-
PRG
15h 45m
2 stops
United Airlines Logo
1:25 pm - 7:22 pm
PRG
-
STL
36h 57m
2 stops
$723United Airlines
Mon, Apr 20 - Mon, Apr 27
Finnair Logo
12:27 pm - 6:45 pm
STL
-
PRG
23h 18m
2 stops
Finnair Logo
7:30 pm - 7:30 pm
PRG
-
STL
31h 00m
2 stops
$730Finnair
Tue, Apr 21 - Mon, Apr 27

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Apr 29
STL2:40 pmLambert-St Louis
23h 40m
2 stops
PRG9:20 pmVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
14h 25m
1 stop
STL1:25 pmLambert-St Louis
$699
United Airlines
Apr 29
STL2:40 pmLambert-St Louis
23h 40m
2 stops
PRG9:20 pmVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
21h 25m
2 stops
STL8:25 pmLambert-St Louis
$703
United Airlines
Apr 21
STL9:10 amLambert-St Louis
25h 45m
2 stops
PRG5:55 pmVáclav Havel Prague
Apr 30
PRG6:00 amVáclav Havel Prague
45h 04m
2 stops
STL8:04 pmLambert-St Louis
$708

Lufthansa flights from St. Louis to Prague

Our best Lufthansa deals on St. Louis to Prague flight tickets
Lufthansa
Mar 18
STL11:28 amLambert-St Louis
22h 37m
2 stops
PRG4:05 pmVáclav Havel Prague
Mar 25
PRG6:50 amVáclav Havel Prague
20h 52m
2 stops
STL9:42 pmLambert-St Louis
$888
Lufthansa
Apr 29
STL3:30 pmLambert-St Louis
19h 00m
1 stop
PRG5:30 pmVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
14h 25m
1 stop
STL1:25 pmLambert-St Louis
$889
Lufthansa
Apr 29
STL3:30 pmLambert-St Louis
12h 20m
1 stop
PRG10:50 amVáclav Havel Prague
May 8
PRG6:00 amVáclav Havel Prague
14h 25m
1 stop
STL1:25 pmLambert-St Louis
$894

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 February 27, 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

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

2:40 pm-9:20 pm

2 stops23h 40m

Václav Havel Prague

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

$699

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

2:40 pm-9:20 pm

2 stops23h 40m

Václav Havel Prague

Fri 5/8

6:00 am-8:25 pm

2 stops21h 25m

$703

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 4/21

5:59 pm-7:35 pm

2 stops18h 36m

Václav Havel Prague

Tue 4/28

6:00 am-9:19 pm

2 stops22h 19m

$707

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 4/21

9:10 am-5:55 pm

2 stops25h 45m

Václav Havel Prague

Thu 4/30

6:00 am-8:04 pm

2 stops45h 04m

$708

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

11:35 am-10:19 pm

2 stops17h 44m

$711

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

9:10 am-1:30 pm

2 stops21h 20m

Václav Havel Prague

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

$712

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 4/29

4:05 pm-5:30 pm

2 stops18h 25m

Václav Havel Prague

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

$716

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 4/20

8:30 am-4:05 pm

2 stops24h 35m

Václav Havel Prague

Mon 4/27

1:25 pm-7:22 pm

2 stops36h 57m

$722

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 4/20

12:15 pm-11:00 am

2 stops15h 45m

Václav Havel Prague

Mon 4/27

1:25 pm-7:22 pm

2 stops36h 57m

$723

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 4/21

12:27 pm-6:45 pm

2 stops23h 18m

Václav Havel Prague

Mon 4/27

7:30 pm-7:30 pm

2 stops31h 00m

$730

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 59% 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

18h 15m

Direct flights

None
The fastest flight from St. Louis to Prague takes 18h 15m
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 18h 15m, 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
9,351 reviews
Search United Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
7,815 reviews
Search Lufthansa flights
DeltaPriceFrom $728Free CancellationRating
7.9
8,242 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