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Cheap flights from St. Louis to Prague from $489

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 4/24. 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
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 - 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
ה', ספט' 10 - ו', ספט' 18
United Airlines Logo
5:32 pm - 10:50 am
STL
-
PRG
34h 18m
2 stops
United Airlines Logo
6:00 am - 2:02 pm
PRG
-
STL
39h 02m
2 stops
$806United Airlines
ב', אוג' 17 - ו', אוג' 21
Lufthansa Logo
6:55 pm - 11:15 pm
STL
-
PRG
21h 20m
2 stops
Lufthansa Logo
6:00 am - 1:25 pm
PRG
-
STL
14h 25m
1 stop
$808Lufthansa
ד', אפר' 29 - ו', מאי 8
United Airlines Logo
1:18 pm - 8:55 am
STL
-
PRG
12h 37m
2 stops
United Airlines Logo
6:00 am - 8:07 pm
PRG
-
STL
21h 07m
2 stops
$810United Airlines
ב', אוג' 17 - ו', אוג' 21
Lufthansa Logo
6:55 pm - 11:15 pm
STL
-
PRG
21h 20m
2 stops
Lufthansa Logo
9:35 am - 11:57 pm
PRG
-
STL
21h 22m
2 stops
$814Lufthansa
ד', אפר' 29 - ו', מאי 8
United Airlines Logo
3:30 pm - 1:30 pm
STL
-
PRG
15h 00m
1 stop
United Airlines Logo
6:00 am - 8:07 pm
PRG
-
STL
21h 07m
2 stops
$817United Airlines
ב', אוג' 17 - ו', אוג' 21
American Airlines Logo
6:20 am - 8:15 am
STL
-
PRG
18h 55m
1 stop
American Airlines Logo
10:15 am - 11:38 pm
PRG
-
STL
20h 23m
1 stop
$841American Airlines
ה', ספט' 10 - ו', ספט' 18
Multiple Airlines Logo
8:55 am - 10:50 am
STL
-
PRG
18h 55m
1 stop
Multiple Airlines Logo
7:35 am - 2:55 pm
PRG
-
STL
13h 20m
1 stop
$843Multiple Airlines
ד', אוג' 19 - ד', אוק' 28
United Airlines Logo
6:00 am - 8:55 am
STL
-
PRG
19h 55m
2 stops
United Airlines Logo
7:35 am - 2:55 pm
PRG
-
STL
13h 20m
1 stop
$846United Airlines
ד', אוג' 19 - ד', אוק' 28
Air Canada Logo
5:00 am - 10:50 am
STL
-
PRG
22h 50m
2 stops
Air Canada Logo
11:50 am - 3:30 pm
PRG
-
STL
33h 40m
2 stops
$851Air Canada
ד', אוג' 19 - ד', אוק' 28

United Airlines flights from St. Louis to Prague

Our best United Airlines deals on St. Louis to Prague flight tickets
United Airlines
Aug 17
STL5:32 pmLambert-St Louis
34h 18m
2 stops
PRG10:50 amVáclav Havel Prague
Aug 21
PRG6:00 amVáclav Havel Prague
39h 02m
2 stops
STL2:02 pmLambert-St Louis
$806
United Airlines
Aug 17
STL1:18 pmLambert-St Louis
12h 37m
2 stops
PRG8:55 amVáclav Havel Prague
Aug 21
PRG6:00 amVáclav Havel Prague
21h 07m
2 stops
STL8:07 pmLambert-St Louis
$810
United Airlines
Aug 17
STL3:30 pmLambert-St Louis
15h 00m
1 stop
PRG1:30 pmVáclav Havel Prague
Aug 21
PRG6:00 amVáclav Havel Prague
21h 07m
2 stops
STL8:07 pmLambert-St Louis
$817

Delta flights from St. Louis to Prague

Our best Delta deals on St. Louis to Prague flight tickets
Delta
Jul 7
STL6:04 pmLambert-St Louis
18h 31m
2 stops
PRG7:35 pmVáclav Havel Prague
Jul 17
PRG6:00 amVáclav Havel Prague
24h 22m
2 stops
STL11:22 pmLambert-St Louis
$980
Delta
Jul 7
STL11:18 amLambert-St Louis
16h 32m
2 stops
PRG10:50 amVáclav Havel Prague
Jul 17
PRG6:30 amVáclav Havel Prague
17h 28m
2 stops
STL4:58 pmLambert-St Louis
$986
Delta
Apr 19
STL6:50 pmLambert-St Louis
15h 50m
2 stops
PRG5:40 pmVáclav Havel Prague
Apr 26
PRG6:00 amVáclav Havel Prague
24h 13m
2 stops
STL11:13 pmLambert-St Louis
$1,006

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 מרץ 29, 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

ה' 9/10

3:42 pm-9:40 am

2 stops34h 58m

Václav Havel Prague

ו' 9/18

8:55 pm-8:50 pm

2 stops30h 55m

$757

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ב' 8/17

5:32 pm-10:50 am

2 stops34h 18m

Václav Havel Prague

ו' 8/21

6:00 am-2:02 pm

2 stops39h 02m

$806

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ד' 4/29

6:55 pm-11:15 pm

2 stops21h 20m

Václav Havel Prague

ו' 5/8

6:00 am-1:25 pm

1 stop14h 25m

$808

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ב' 8/17

1:18 pm-8:55 am

2 stops12h 37m

Václav Havel Prague

ו' 8/21

6:00 am-8:07 pm

2 stops21h 07m

$810

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ד' 4/29

6:55 pm-11:15 pm

2 stops21h 20m

Václav Havel Prague

ו' 5/8

9:35 am-11:57 pm

2 stops21h 22m

$814

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ב' 8/17

3:30 pm-1:30 pm

1 stop15h 00m

Václav Havel Prague

ו' 8/21

6:00 am-8:07 pm

2 stops21h 07m

$817

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ה' 9/10

6:20 am-8:15 am

1 stop18h 55m

Václav Havel Prague

ו' 9/18

10:15 am-11:38 pm

1 stop20h 23m

$841
Quickest round-trip

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ד' 8/19

8:55 am-10:50 am

1 stop18h 55m

Václav Havel Prague

ד' 10/28

7:35 am-2:55 pm

1 stop13h 20m

$843

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ד' 8/19

6:00 am-8:55 am

2 stops19h 55m

Václav Havel Prague

ד' 10/28

7:35 am-2:55 pm

1 stop13h 20m

$846

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

ד' 8/19

5:00 am-10:50 am

2 stops22h 50m

Václav Havel Prague

ד' 10/28

11:50 am-3:30 pm

2 stops33h 40m

$851

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?

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

12h 15m

Direct flights

None
The fastest flight from St. Louis to Prague takes 12h 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 12h 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
9,508 reviews
Search United Airlines flights
LufthansaPriceFrom $572Free CancellationRating
6.8
7,872 reviews
Search Lufthansa flights
British AirwaysPriceFrom $582Free CancellationRating
6.7
7,829 reviews
Search British Airways flights
DeltaPriceFrom $908Free CancellationRating
7.9
8,357 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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ג' 4/28
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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
British Airways