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

According to our current data, British Airways ($617), and United Airlines ($623) offers the cheapest pricing from St. Louis to Prague. British Airways is priced at 34% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from St. Louis to Prague?

Travelers seeking maximum savings on their St. Louis to Prague flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Prague ranges from 0.4 - 2.4 inches per month. June is typically the wettest month, when rainfall can reach 2.4 in. February is typically the driest time to visit Prague when rainfall is around 0.4 in.

If weather is an important factor for your trip to Prague, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular airlines that fly from St. Louis to Prague?

Before booking your flight from St. Louis to Prague check out the most popular airlines for this route: Air Canada, Delta or KLM.

What is the cheapest day to fly round-trip from St. Louis to Prague?

Leaving on a Wednesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 23% on the overall cost on flights from St. Louis to Prague.

What is the cheapest month to fly from St. Louis to Prague?

Flights from St. Louis to Prague lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to Prague in March, with the cheapest ticket starting at $644.

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.

$349+ Flights from St. Louis to Prague

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

Airfare is below average for this route at the moment. St. Louis to Prague flights typically cost between $693 and $1,039 in December. The cheapest round-trip price found within the last 3 days was $612 on Multiple Airlines (Dec 3-Dec 10).

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Prague with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Prague

Round-trip from	$612 (Gurufare)
One-way from	$349 (Kiwi.com)
Popular in	June
Cheapest in	March
Average price	$731

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 ($302 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

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 8月 13, 2025.

週三 12/35:55 pmSTL - PRG

2 stops21h 55mMultiple Airlines

週三 12/1012:30 pmPRG - STL

2 stops27h 24mMultiple Airlines

Deal found 8/12

$612

週日 10/267:54 pmSTL - PRG

2 stops16h 16mBritish Airways

週四 11/66:45 amPRG - STL

2 stops19h 42mBritish Airways

Deal found 8/11

$617

週日 10/264:50 pmSTL - PRG

1 stop15h 25mUnited Airlines

週四 11/611:50 amPRG - STL

2 stops34h 39mUnited Airlines

Deal found 8/11

$623

週日 10/264:50 pmSTL - PRG

1 stop12h 20mLufthansa

週四 11/63:10 pmPRG - STL

1 stop29h 45mLufthansa

Deal found 8/11

$645

週三 10/158:04 pmSTL - PRG

2 stops17h 41mBritish Airways

週三 10/228:10 amPRG - STL

2 stops17h 26mBritish Airways

Deal found 8/11

$662

週三 10/1512:25 pmSTL - PRG

2 stops18h 40mUnited Airlines

週三 10/226:00 amPRG - STL

1 stop14h 30mUnited Airlines

Deal found 8/11

$674

週三 10/153:30 pmSTL - PRG

1 stop15h 10mLufthansa

週三 10/226:00 amPRG - STL

1 stop14h 30mLufthansa

Deal found 8/12

$677

週三 9/242:11 pmSTL - PRG

2 stops25h 54mBritish Airways

週三 10/18:10 amPRG - STL

2 stops17h 12mBritish Airways

Deal found 8/12

$723

週三 12/33:50 pmSTL - PRG

1 stop19h 15mLufthansa

週三 12/106:05 amPRG - STL

2 stops24h 37mLufthansa

Deal found 8/12

$750

週三 9/241:30 pmSTL - PRG

2 stops21h 25mMultiple Airlines

週三 10/16:00 amPRG - STL

1 stop14h 30mMultiple Airlines

Deal found 8/12

$757

週四 9/253:40 pmSTL - PRG

2 stops35h 05mScandinavian Airlines

週四 10/28:55 pmPRG - STL

2 stops31h 20mScandinavian Airlines

Deal found 8/11

$770

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 8月 13, 2025.

週三 12/35:55 pmSTL - PRG

2 stops21h 55mMultiple Airlines

週三 12/1012:30 pmPRG - STL

2 stops27h 24mMultiple Airlines

Deal found 8/12

$612

週日 10/267:54 pmSTL - PRG

2 stops16h 16mBritish Airways

週四 11/66:45 amPRG - STL

2 stops19h 42mBritish Airways

Deal found 8/11

$617

週日 10/264:50 pmSTL - PRG

1 stop15h 25mUnited Airlines

週四 11/611:50 amPRG - STL

2 stops34h 39mUnited Airlines

Deal found 8/11

$623

週日 10/264:50 pmSTL - PRG

1 stop12h 20mLufthansa

週四 11/63:10 pmPRG - STL

1 stop29h 45mLufthansa

Deal found 8/11

$645

週三 10/158:04 pmSTL - PRG

2 stops17h 41mBritish Airways

週三 10/228:10 amPRG - STL

2 stops17h 26mBritish Airways

Deal found 8/11

$662

週三 10/1512:25 pmSTL - PRG

2 stops18h 40mUnited Airlines

週三 10/226:00 amPRG - STL

1 stop14h 30mUnited Airlines

Deal found 8/11

$674

週三 10/153:30 pmSTL - PRG

1 stop11h 10mLufthansa

週三 10/226:00 amPRG - STL

1 stop14h 30mLufthansa

Deal found 8/11

$677

週三 9/242:11 pmSTL - PRG

2 stops25h 54mBritish Airways

週三 10/18:10 amPRG - STL

2 stops17h 12mBritish Airways

Deal found 8/12

$723

週三 12/33:50 pmSTL - PRG

1 stop19h 15mLufthansa

週三 12/106:05 amPRG - STL

2 stops24h 37mLufthansa

Deal found 8/12

$750

Last-minute flights from St. Louis to Prague
Discover last-minute flight deals from St. Louis to Prague. Data last updated 8月 13, 2025 and is based on user searches.

週三 9/242:11 pmSTL - PRG

2 stops25h 54mBritish Airways

週三 10/18:10 amPRG - STL

2 stops17h 12mBritish Airways

Deal found 8/12

$723

週三 9/241:30 pmSTL - PRG

2 stops21h 25mMultiple Airlines

週三 10/16:00 amPRG - STL

1 stop14h 30mMultiple Airlines

Deal found 8/12

$757

週三 9/243:30 pmSTL - PRG

1 stop19h 25mLufthansa

週三 10/16:00 amPRG - STL

1 stop14h 30mLufthansa

Deal found 8/12

$860

週四 9/253:40 pmSTL - PRG

2 stops35h 05mScandinavian Airlines

週四 10/28:55 pmPRG - STL

2 stops31h 20mScandinavian Airlines

Deal found 8/11

$770

週四 9/259:15 amSTL - PRG

2 stops16h 50mMultiple Airlines

週四 10/26:35 pmPRG - STL

1 stop25h 55mMultiple Airlines

Deal found 8/11

$801

週四 9/251:05 pmSTL - PRG

3 stops26h 20mBrussels Airlines

週四 10/26:50 amPRG - STL

2 stops19h 19mBrussels Airlines

Deal found 8/11

$1,166

週五 9/263:30 pmSTL - PRG

1 stop12h 25mLufthansa

週五 10/36:00 amPRG - STL

1 stop14h 30mLufthansa

Deal found 8/12

$788

週五 9/267:10 amSTL - PRG

2 stops18h 50mDelta

週五 10/36:30 amPRG - STL

2 stops23h 39mDelta

Deal found 8/12

$807

週五 9/269:15 amSTL - PRG

3 stops22h 20mMultiple Airlines

週五 10/34:20 pmPRG - STL

3 stops29h 58mMultiple Airlines

Deal found 8/12

$1,174

One-way flights from St. Louis to Prague
Search for one-way flight options from St. Louis to Prague. Find affordable one-way fares based on user searches. Data last updated 8月 13, 2025.

週日 10/1911:32 amSTL - PRG

3 stops41h 03mMultiple Airlines

Deal found 8/12

$349

週日 11/211:02 amSTL - PRG

3 stops48h 23mMultiple Airlines

Deal found 8/12

$402

週三 11/1211:49 amSTL - PRG

2 stops25h 41mMultiple Airlines

Deal found 8/12

$412

週日 11/26:45 pmSTL - PRG

2 stops16h 25mAmerican Airlines

Deal found 8/11

$472

週四 9/251:26 pmSTL - PRG

2 stops37h 19mScandinavian Airlines

Deal found 8/11

$486

週日 11/23:50 pmSTL - PRG

1 stop12h 20mUnited Airlines

Deal found 8/12

$490

週日 11/23:50 pmSTL - PRG

1 stop12h 20mLufthansa

Deal found 8/11

$490

週三 11/123:50 pmSTL - PRG

1 stop19h 15mLufthansa

Deal found 8/12

$490

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 12/3

5:55 pm-10:50 pm

2 stops21h 55m

Václav Havel Prague

週三 12/10

12:30 pm-8:54 am

2 stops27h 24m

$612

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週日 10/26

7:54 pm-6:10 pm

2 stops16h 16m

Václav Havel Prague

週四 11/6

6:45 am-7:27 pm

2 stops19h 42m

$617

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週日 10/26

4:50 pm-2:15 pm

1 stop15h 25m

Václav Havel Prague

週四 11/6

11:50 am-3:29 pm

2 stops34h 39m

$623

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週日 10/26

4:50 pm-11:10 am

1 stop12h 20m

Václav Havel Prague

週四 11/6

3:10 pm-1:55 pm

1 stop29h 45m

$645

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 10/15

8:04 pm-8:45 pm

2 stops17h 41m

Václav Havel Prague

週三 10/22

8:10 am-6:36 pm

2 stops17h 26m

$662

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 10/15

12:25 pm-2:05 pm

2 stops18h 40m

Václav Havel Prague

週三 10/22

6:00 am-1:30 pm

1 stop14h 30m

$674

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 10/15

3:30 pm-9:40 am

1 stop11h 10m

Václav Havel Prague

週三 10/22

6:00 am-1:30 pm

1 stop14h 30m

$677

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 9/24

2:11 pm-11:05 pm

2 stops25h 54m

Václav Havel Prague

週三 10/1

8:10 am-6:22 pm

2 stops17h 12m

$723

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週三 12/3

3:50 pm-6:05 pm

1 stop19h 15m

Václav Havel Prague

週三 12/10

6:05 am-11:42 pm

2 stops24h 37m

$750

St. LouisPrague

STL - PRG

STLPRG

Lambert-St Louis

週日 10/19

11:32 am-11:35 am

3 stops41h 03m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 17 results

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 $1,117). 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?

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

Read reviews from past customers who have flown Delta, KLM, and United 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.

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,979 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,381 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,920 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

9,943 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Lufthansa

6.8

Okay

7,317 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from St. Louis to Prague round-trip?
According to our current data, British Airways ($617), and United Airlines ($623) offers the cheapest pricing from St. Louis to Prague. British Airways is priced at 34% 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, 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 $1,117). 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

Top 5 airlines flying from St. Louis to Prague

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$657	Average$1,208	FlexibilityNo cancel fee	On-timeN/A
Lufthansa	Cheapest$683	Average$1,177	FlexibilityNo cancel fee	On-time76%
KLM	Cheapest$708	Average$1,303	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$723	Average$1,042	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$745	Average$1,087	FlexibilityNo cancel fee	On-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$349+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Prague with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Prague

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Prague

Cheapest flights from St. Louis to PragueExplore 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 8月 13, 2025.

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 8月 13, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Prague that are best for you.

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.

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?

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 8月 13, 2025.

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 8月 13, 2025.

Read reviews from past customers who have flown Delta, KLM, and United 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.

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?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Prague

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Prague

100% Free

Book with Flexibility

Travel Smart

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 8月 13, 2025.