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$482+ Cheap flights from St. Louis (STL) to Prague (PRG)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PRG
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from St. Louis to Prague

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Prague (PRG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$650
(Gotogate)

One-way from

$482
(Ovago)

Popular in

June

Cheapest in

March

Average price

$1,182
From Lambert-St Louis to Václav Havel Prague
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One-way flight from Lambert-St Louis to Václav Havel Prague
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Highest demand for flights based on searches. 22% potential increase in price ($284 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to Prague

Cheapest flights from St. Louis to Prague
Explore the most affordable flight options available from St. Louis to Prague. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Gotogate deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:30 pmSTL - PRG
2 stops13h 10mMultiple Airlines
Wed 8/206:00 amPRG - STL
1 stop14h 30mMultiple Airlines
Deal found 7/27$650
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:52 pmSTL - PRG
2 stops16h 08mAmerican Airlines
Wed 8/208:10 amPRG - STL
2 stops17h 20mAmerican Airlines
Deal found 7/27$658
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:04 pmSTL - PRG
2 stops13h 56mUnited Airlines
Wed 9/171:40 pmPRG - STL
2 stops39h 28mUnited Airlines
Deal found 7/27$659
This Ovago deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:04 pmSTL - PRG
2 stops20h 01mBritish Airways
Wed 10/228:10 amPRG - STL
2 stops17h 26mBritish Airways
Deal found 7/27$664
This FlightHub deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:30 pmSTL - PRG
1 stop15h 10mLufthansa
Wed 10/226:00 amPRG - STL
1 stop14h 30mLufthansa
Deal found 7/27$669
This Brussels Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:04 pmSTL - PRG
3 stops38h 41mBrussels Airlines
Wed 8/2011:50 amPRG - STL
2 stops38h 09mBrussels Airlines
Deal found 7/27$1,009

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from St. Louis to Prague that are best for you.

Fly from

St. Louis

Fly to

Prague

Route

Depart

Return

Price

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 8/6

1:30 pm-9:40 am

2 stops13h 10m

Václav Havel Prague

Wed 8/20

6:00 am-1:30 pm

1 stop14h 30m

$650

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 8/6

5:52 pm-5:00 pm

2 stops16h 08m

Václav Havel Prague

Wed 8/20

8:10 am-6:30 pm

2 stops17h 20m

$658

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 9/10

7:04 pm-4:00 pm

2 stops13h 56m

Václav Havel Prague

Wed 9/17

1:40 pm-10:08 pm

2 stops39h 28m

$659

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 10/15

8:04 pm-11:05 pm

2 stops20h 01m

Václav Havel Prague

Wed 10/22

8:10 am-6:36 pm

2 stops17h 26m

$664

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 10/15

3:30 pm-1:40 pm

1 stop15h 10m

Václav Havel Prague

Wed 10/22

6:00 am-1:30 pm

1 stop14h 30m

$669

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 8/6

1:04 pm-10:45 am

3 stops38h 41m

Václav Havel Prague

Wed 8/20

11:50 am-6:59 pm

2 stops38h 09m

$1,009

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Fri 9/26

1:26 pm-9:45 am

2 stops37h 19m

$482

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Fri 9/26

3:30 pm-10:55 am

1 stop12h 25m

$624

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Thu 9/25

1:30 pm-12:10 pm

2 stops39h 40m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from St. Louis to Prague

Have a flexible travel schedule? Discover the best time to fly to Prague from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Prague

What is the cheapest month to book a flight from St. Louis to Prague?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Prague (average of $651). Flying from St. Louis to Prague in June is currently the most expensive (average of $1,118). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to PRG?

Find hourly flight availability from St. Louis to Prague. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

One of the essential ways to save on airfare from St. Louis to Prague is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 17% on airfare.

How much does it cost to fly round-trip from St. Louis to Prague?

Reviews of airlines servicing Prague

Get insights into the airlines that provide service to Prague. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Prague. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown United Airlines, Scandinavian Airlines, and Brussels Airlines from St. Louis to Prague. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,899 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Scandinavian Airlines
7.3
Good
1,449 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Brussels Airlines
7.3
Good
350 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,822 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Prague. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from St. Louis to Prague round-trip?

    According to our current data, American Airlines ($658), United Airlines ($659), and British Airways ($664) offers the cheapest pricing from St. Louis to Prague. American Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Prague one-way?

    For one-way options, check prices for Scandinavian Airlines. According to our data, you can fly for as low as $482. Users have also found prices from $624 and $625 on Lufthansa and Air Canada, respectively.

  • Can I find deals for flights from St. Louis to Prague that include hotel bookings?

    Yes. In addition to deals on St. Louis to Prague flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Prague?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Prague.

  • Can I find deals for business class flights from St. Louis to Prague?

    Yes. Cheapflights offers flight deals from St. Louis to Prague by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Prague?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Prague (average of $651). Flying from St. Louis to Prague in June is currently the most expensive (average of $1,118). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Prague

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Prague flights

Top 5 airlines flying from St. Louis to Prague

Discover the top 5 airlines that operate flights from St. Louis to Prague. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$642Average$1,174FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$683Average$1,177FlexibilityNo cancel feeOn-time76%
KLMCheapest$708Average$1,303FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$723Average$1,042FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$745Average$1,087FlexibilityNo cancel feeOn-time67%

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