HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Prague

$232+ Cheap flights from Dulles Intl (IAD) 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PRG
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl 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.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Václav Havel Prague are usually found in February or March, booked 54 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Dulles Intl to Prague

Cheapest flights from Dulles Intl to Prague
Explore the most affordable flight options available from Dulles Intl to Prague. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmIAD - PRG
1 stop13h 55mTAP AIR PORTUGAL
Wed 1/1412:30 pmPRG - IAD
1 stop14h 30mTAP AIR PORTUGAL
Deal found 12/14$657
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmIAD - PRG
1 stop11h 10mLufthansa
Mon 1/124:45 pmPRG - IAD
1 stop28h 50mLufthansa
Deal found 12/14$670
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/14. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:30 pmIAD - PRG
1 stop13h 55mTAP AIR PORTUGAL
Sun 1/117:15 pmPRG - IAD
1 stop26h 00mTAP AIR PORTUGAL
Deal found 12/14$692
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
Wed 1/1412:30 pmPRG - IAD
1 stop14h 30mTAP AIR PORTUGAL
Deal found 12/14$695
This Delta deal was found by Cheapflights users on 12/14. 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 12/316:50 pmIAD - PRG
1 stop16h 15mDelta
Tue 1/138:55 amPRG - IAD
1 stop13h 10mDelta
Deal found 12/14$702
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Tue 12/305:45 pmIAD - PRG
1 stop11h 05mUnited Airlines
Tue 1/137:25 amPRG - IAD
1 stop14h 25mUnited Airlines
Deal found 12/14$704
This British Airways deal was found by Cheapflights users on 12/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:45 pmIAD - PRG
1 stop30h 00mBritish Airways
Mon 1/129:35 pmPRG - IAD
1 stop28h 20mBritish Airways
Deal found 12/14$705
This Delta deal was found by Cheapflights users on 12/14. 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 12/316:00 amIAD - PRG
2 stops23h 40mDelta
Mon 1/122:30 pmPRG - IAD
1 stop31h 35mDelta
Deal found 12/14$707
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:30 pmIAD - PRG
1 stop30h 15mSWISS
Thu 1/82:50 pmPRG - IAD
2 stops30h 45mSWISS
Deal found 12/13$713
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:20 pmIAD - PRG
2 stops32h 25mSWISS
Mon 1/122:50 pmPRG - IAD
1 stop30h 40mSWISS
Deal found 12/14$714
This Air Canada deal was found by Cheapflights users on 12/14. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:06 pmIAD - PRG
2 stops32h 59mAir Canada
Tue 1/136:50 amPRG - IAD
2 stops34h 45mAir Canada
Deal found 12/14$715
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:25 pmIAD - PRG
1 stop22h 55mSWISS
Thu 1/82:50 pmPRG - IAD
2 stops29h 10mSWISS
Deal found 12/14$727

Find flight deals from Dulles Intl to Prague

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$553
(CheapOair)

One-way from

$232
(oojo)

Popular in

June

Cheapest in

February

Average price

$744
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Václav Havel Prague flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Václav Havel Prague flights.
Search Deals
From Washington, D.C. Dulles Intl to Václav Havel Prague
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Václav Havel Prague
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 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 Dulles Intl 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 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Prague that are best for you.

Fly from

Dulles Intl

Fly to

Prague

Route

Depart

Return

Price

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 4/8

8:20 pm-8:15 pm

1 stop17h 55m

Václav Havel Prague

Wed 4/15

10:20 am-4:50 pm

1 stop12h 30m

$556

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 4/15

10:25 pm-3:45 pm

1 stop11h 20m

Václav Havel Prague

Wed 4/29

12:55 pm-8:20 pm

1 stop13h 25m

$585

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Tue 4/14

10:25 pm-4:25 pm

1 stop12h 00m

Václav Havel Prague

Mon 4/27

5:45 pm-3:50 pm

1 stop28h 05m

$585

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Mon 4/6

5:40 pm-1:15 pm

1 stop13h 35m

Václav Havel Prague

Tue 4/14

5:45 pm-5:25 pm

1 stop29h 40m

$585

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Tue 4/7

5:40 pm-11:35 am

1 stop11h 55m

Václav Havel Prague

Mon 4/13

2:25 pm-5:25 pm

1 stop33h 00m

$585

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Thu 4/9

8:20 pm-8:15 pm

1 stop17h 55m

Václav Havel Prague

Mon 4/13

10:20 am-4:50 pm

1 stop12h 30m

$586

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Sun 1/11

6:20 pm-8:45 pm

1 stop20h 25m

Václav Havel Prague

Tue 1/27

6:45 am-7:55 pm

1 stop19h 10m

$595

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Tue 4/14

12:30 pm-3:00 pm

2 stops20h 30m

Václav Havel Prague

Wed 4/29

6:00 am-3:35 pm

1 stop15h 35m

$596

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Tue 4/7

5:20 pm-7:35 pm

2 stops20h 15m

Václav Havel Prague

Wed 4/15

2:30 pm-3:35 pm

1 stop31h 05m

$596

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 1/14

12:23 pm-11:40 am

2 stops17h 17m

Václav Havel Prague

Tue 1/27

8:55 am-4:05 pm

1 stop13h 10m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Dulles Intl 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 Dulles Intl 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
AranGrantPrice Accuracy2 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 Washington, D.C. Dulles Intl Airport-Prague flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Prague flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Prague flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-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 Washington, D.C. Dulles Intl Airport-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 Dulles Intl to Prague

Have a flexible travel schedule? Discover the best time to fly to Prague from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Prague

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Prague?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Prague. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Prague, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Prague?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Prague (average of $433). Flying from Washington, D.C. Dulles Intl Airport to Prague in June is currently the most expensive (average of $608). 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 IAD to PRG?

Find hourly flight availability from Dulles Intl 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 15, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 35% on flights from Washington, D.C. Dulles Intl Airport to Prague by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport 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 December 15, 2025.
Get a feel of what it's like to fly with SWISS, Scandinavian Airlines, and United Airlines from Washington, D.C. Dulles Intl Airport to Prague by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.
SWISS
7.5
Good
1,812 reviews
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.
Scandinavian Airlines
7.4
Good
1,606 reviews
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.
United Airlines
7.4
Good
9,093 reviews
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.
Lufthansa
6.8
Okay
7,631 reviews
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.
British Airways
6.7
Okay
7,578 reviews
SWISS
7.5
Good
1,812 reviews

Boarding

7.7

Crew

8.3

Entertainment

6.8

Comfort

7.4

Overall

7.5

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Joanne,Sep 2025

OPO - ZRH

The seats were very cramped, even though I paid for an upgraded seat. The seats were also hard, and needed new padding. This made is made it very challenging for this 11 hour flight. The foot was alright. The crew were excellent, and the movie selection was very good. The experience was so challenging what my husband says he does not want to fly to Europe any more.

Related info for your journey

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

  • What airport do you fly into for flights to Prague from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Prague, you will be flying into Václav Havel Prague. Václav Havel Prague (PRG) is just 6.9 mi from the center of the city. Václav Havel Prague is the only Prague airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 11 airlines have flights to Václav Havel Prague from Washington, D.C. Dulles Intl on a regular basis.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Prague?

    Airlines like Scandinavian Airlines and British Airways fly from Washington, D.C. Dulles Intl Airport to Prague in about 11h 20m. The time it takes to get you to your destination can typically vary by up to 6h 35m. The distance between Washington, D.C. Dulles Intl Airport and Prague is about 4290 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Prague round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Prague round-trip from $416. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from $427, and Delta, from $525. Icelandair is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Prague one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $175. However, be on the lookout for offers from TAP AIR PORTUGAL and Turkish Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Prague for a low price.

  • Can I find deals for flights from Dulles Intl to Prague that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to Prague?

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

  • Can I find deals for business class flights from Dulles Intl to Prague?

    Yes. Cheapflights offers flight deals from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Prague?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Prague (average of $433). Flying from Washington, D.C. Dulles Intl Airport to Prague in June is currently the most expensive (average of $608). 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

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

Alternative routes for Dulles Intl to Prague

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Prague flights
Baltimore to Prague flights

Top 10 airlines flying from Dulles Intl to Prague

Discover the top 10 airlines that operate flights from Dulles Intl 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$416Average$563FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$427Average$483FlexibilityNo cancel feeOn-time77%
DeltaCheapest$525Average$777FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$526Average$705FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$528Average$789FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$547Average$688FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$561Average$606FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$858FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$563Average$795FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$611Average$921FlexibilityNo cancel feeOn-timeN/A

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.