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$499+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PRG
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
1 adult, Economy
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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 noviembre 12, 2025.

This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:05 pmSTL - PRG
2 stops16h 00mDelta
mar. 12/166:00 amPRG - STL
2 stops17h 35mDelta
Deal found 11/11$507
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:28 pmSTL - PRG
2 stops17h 07mDelta
mar. 12/166:00 amPRG - STL
2 stops17h 35mDelta
Deal found 11/11$612
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:05 pmSTL - PRG
2 stops16h 00mDelta
mié. 12/1711:35 amPRG - STL
2 stops27h 45mDelta
Deal found 11/11$692
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:05 pmSTL - PRG
2 stops16h 00mDelta
jue. 12/189:50 amPRG - STL
2 stops19h 07mDelta
Deal found 11/11$697
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/119:30 amSTL - PRG
2 stops15h 55mDelta
mar. 12/166:00 amPRG - STL
2 stops17h 35mDelta
Deal found 11/11$747
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:28 pmSTL - PRG
2 stops17h 07mDelta
mié. 12/176:00 amPRG - STL
2 stops17h 21mDelta
Deal found 11/11$797
This Ovago deal was found by Cheapflights users on 11/11. 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.
vie. 12/124:49 pmSTL - PRG
2 stops17h 06mBritish Airways
jue. 12/186:45 amPRG - STL
2 stops21h 06mBritish Airways
Deal found 11/11$834
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/126:05 pmSTL - PRG
2 stops16h 00mDelta
mar. 12/166:00 amPRG - STL
2 stops17h 35mDelta
Deal found 11/12$865
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1010:45 amSTL - PRG
2 stops14h 40mDelta
jue. 12/1811:35 amPRG - STL
2 stops29h 15mDelta
Deal found 11/11$888
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:05 pmSTL - PRG
2 stops16h 00mDelta
vie. 12/196:30 amPRG - STL
2 stops17h 40mDelta
Deal found 11/11$897
This United Airlines deal was found by Cheapflights users on 11/10. 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.
jue. 12/254:05 pmSTL - PRG
2 stops47h 20mUnited Airlines
mié. 1/712:10 pmPRG - STL
2 stops38h 17mUnited Airlines
Deal found 11/10$912
This United Airlines deal was found by Cheapflights users on 11/12. 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.
vie. 12/263:50 pmSTL - PRG
1 stop15h 15mUnited Airlines
mié. 1/712:10 pmPRG - STL
2 stops53h 03mUnited Airlines
Deal found 11/12$924

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 noviembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$507
(Delta)

One-way from

$499
(American Airlines)

Popular in

June

Cheapest in

March

Average price

$754
Provider with most accurate pricing for Lambert-St Louis-Václav Havel Prague flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Václav Havel Prague flights.
Search Deals
From Lambert-St Louis to Václav Havel Prague
Search Deals
One-way flight from Lambert-St Louis to Václav Havel Prague
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($304 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 noviembre 12, 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

dom. 1/4

2:06 pm-1:35 pm

2 stops16h 29m

Václav Havel Prague

mar. 1/20

6:45 am-6:16 pm

2 stops18h 31m

$638

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

dom. 5/3

10:00 pm-5:00 pm

1 stop12h 00m

Václav Havel Prague

sáb. 5/9

5:45 pm-7:30 pm

1 stop32h 45m

$745

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

jue. 12/11

9:30 am-8:25 am

2 stops15h 55m

Václav Havel Prague

lun. 12/15

2:30 pm-4:35 pm

2 stops33h 05m

$747

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

vie. 12/12

10:45 am-8:25 am

2 stops14h 40m

Václav Havel Prague

lun. 12/15

2:30 pm-4:35 pm

2 stops33h 05m

$747

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

dom. 1/4

3:50 pm-11:10 am

1 stop12h 20m

Václav Havel Prague

mar. 1/20

11:50 am-1:55 pm

1 stop33h 05m

$781

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

vie. 3/27

4:50 pm-2:05 pm

1 stop15h 15m

Václav Havel Prague

mar. 3/31

9:10 am-9:47 pm

2 stops19h 37m

$813

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

vie. 3/27

4:50 pm-6:15 pm

1 stop19h 25m

Václav Havel Prague

mar. 3/31

9:10 am-7:48 pm

2 stops17h 38m

$813

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

mié. 12/10

10:45 am-8:25 am

2 stops14h 40m

Václav Havel Prague

jue. 12/18

11:35 am-9:50 am

2 stops29h 15m

$888

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

lun. 4/20

11:14 am-1:15 pm

2 stops19h 01m

$499

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

lun. 4/20

6:00 pm-11:35 pm

3 stops46h 35m

$7,909

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Compare providers for flights from St. Louis to Prague

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Prague in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Prague flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Prague flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Prague flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Prague flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Prague flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, August is the cheapest month in which you can book a flight from St. Louis to Prague (average of $604). Flying from St. Louis to Prague in June is currently the most expensive (average of $1,071). 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 noviembre 12, 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 evening could potentially save you up to 18% on airfare.

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 noviembre 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Air Canada 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.
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,015 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,443 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,565 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,513 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from St. Louis to Prague?

    British Airways, Delta, and Lufthansa can get you from St. Louis to Prague in just under 12h 20m. Your travel time can differ by up to 4h 09m. The distance between St. Louis and Prague is about 4783 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, British Airways ($582), United Airlines ($655), and Lufthansa ($683) offers the cheapest pricing from St. Louis to Prague. British Airways is priced at 37% lower than the current average price of a flight leaving 3 months from now.

  • 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, August is the cheapest month in which you can book a flight from St. Louis to Prague (average of $604). Flying from St. Louis to Prague in June is currently the most expensive (average of $1,071). 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

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Alternative routes for St. Louis to Prague

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Kansas City to Prague flights

Top 6 airlines flying from St. Louis to Prague

Discover the top 6 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 noviembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$582Average$744FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$655Average$866FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$683Average$1,134FlexibilityNo cancel feeOn-time76%
DeltaCheapest$728Average$1,208FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$731Average$1,303FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$745Average$1,087FlexibilityNo cancel feeOn-time67%

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