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$391+ 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
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from St. Louis to Prague

Best flights from St. Louis to Prague
Discover carefully curated flight deals from St. Louis to Prague that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This Mytrip deal was found by Cheapflights users on 12/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/164:05 pmSTL - PRG
2 stops14h 50mMultiple Airlines
Tue 3/310:30 amPRG - STL
1 stop34h 25mMultiple Airlines
Deal found 12/26$502
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:00 pmSTL - PRG
2 stops15h 40mDelta
Thu 2/196:00 amPRG - STL
2 stops24h 36mDelta
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:45 amSTL - PRG
2 stops16h 20mDelta
Thu 2/198:55 amPRG - STL
2 stops18h 48mDelta
Deal found 12/27$508
This Air France deal was found by Cheapflights users on 12/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/105:56 pmSTL - PRG
2 stops16h 09mMultiple Airlines
Tue 2/1711:35 amPRG - STL
2 stops16h 08mMultiple Airlines
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:00 pmSTL - PRG
2 stops15h 40mDelta
Wed 2/188:55 amPRG - STL
2 stops17h 44mDelta
Deal found 12/27$508
This Air France deal was found by Cheapflights users on 12/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/911:23 amSTL - PRG
2 stops17h 17mMultiple Airlines
Sun 2/158:55 amPRG - STL
2 stops21h 41mMultiple Airlines
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/77:05 amSTL - PRG
2 stops27h 00mDelta
Wed 2/1811:35 amPRG - STL
2 stops16h 08mDelta
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:00 pmSTL - PRG
2 stops15h 40mDelta
Sun 2/158:55 amPRG - STL
2 stops21h 41mDelta
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:45 amSTL - PRG
2 stops19h 10mDelta
Wed 2/186:00 amPRG - STL
2 stops20h 39mDelta
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1411:30 amSTL - PRG
2 stops17h 10mDelta
Sun 2/226:00 amPRG - STL
2 stops24h 23mDelta
Deal found 12/27$508
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/810:19 amSTL - PRG
2 stops18h 21mDelta
Mon 2/168:55 amPRG - STL
2 stops21h 28mDelta
Deal found 12/27$508

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$490
(Mytrip)

One-way from

$391
(FlightHub)

Popular in

May

Cheapest in

January

Average price

$822
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. 22% potential increase in price ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 28, 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

Mon 2/16

4:05 pm-1:55 pm

2 stops14h 50m

Václav Havel Prague

Tue 3/3

10:30 am-1:55 pm

1 stop34h 25m

$502

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 2/11

1:00 pm-11:40 am

2 stops15h 40m

Václav Havel Prague

Thu 2/19

6:00 am-11:36 pm

2 stops24h 36m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Fri 2/6

9:45 am-9:05 am

2 stops16h 20m

Václav Havel Prague

Thu 2/19

8:55 am-8:43 pm

2 stops18h 48m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Tue 2/10

5:56 pm-5:05 pm

2 stops16h 09m

Václav Havel Prague

Tue 2/17

11:35 am-8:43 pm

2 stops16h 08m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 2/11

1:00 pm-11:40 am

2 stops15h 40m

Václav Havel Prague

Wed 2/18

8:55 am-7:39 pm

2 stops17h 44m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Mon 2/9

11:23 am-11:40 am

2 stops17h 17m

Václav Havel Prague

Sun 2/15

8:55 am-11:36 pm

2 stops21h 41m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 2/7

7:05 am-5:05 pm

2 stops27h 00m

Václav Havel Prague

Wed 2/18

11:35 am-8:43 pm

2 stops16h 08m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Wed 2/11

1:00 pm-11:40 am

2 stops15h 40m

Václav Havel Prague

Sun 2/15

8:55 am-11:36 pm

2 stops21h 41m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Fri 2/6

9:45 am-11:55 am

2 stops19h 10m

Václav Havel Prague

Wed 2/18

6:00 am-7:39 pm

2 stops20h 39m

$508

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

Sat 2/14

11:30 am-11:40 am

2 stops17h 10m

Václav Havel Prague

Sun 2/22

6:00 am-11:23 pm

2 stops24h 23m

$508

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 14 results
1
2

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 December.
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, April is the cheapest month in which you can book a flight from St. Louis to Prague (average of $507). 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 December 28, 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 December 28, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Lufthansa 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
8,017 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

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
8,017 reviews
Delta
7.9
Good
8,017 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

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
9,114 reviews
Delta
7.9
Good
8,017 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

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
7,658 reviews
Delta
7.9
Good
8,017 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

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
7,616 reviews
Delta
7.9
Good
8,017 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

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?

    Delta can get you from St. Louis to Prague in just under 15h 40m. Your travel time can differ by up to . The distance between St. Louis and Prague is about 4783 mi.

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

    According to our current data, United Airlines ($504), British Airways ($582), and Delta ($642) offers the cheapest pricing from St. Louis to Prague. United Airlines is priced at 43% 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, April is the cheapest month in which you can book a flight from St. Louis to Prague (average of $507). 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

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 4 airlines flying from St. Louis to Prague

Discover the top 4 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$504Average$800FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$582Average$704FlexibilityNo cancel feeOn-time70%
DeltaCheapest$642Average$1,303FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$684Average$1,067FlexibilityNo cancel feeOn-time76%

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