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$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 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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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 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/106:20 pmIAD - PRG
2 stops22h 00mSWISS
Mon 12/158:15 pmPRG - IAD
1 stop26h 25mSWISS
Deal found 12/9$687
This FlightHub deal was found by Cheapflights users on 12/9. 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 12/1010:55 pmIAD - PRG
1 stop11h 10mLufthansa
Wed 12/176:15 amPRG - IAD
1 stop15h 20mLufthansa
Deal found 12/9$698
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 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 1/88:15 pmPRG - IAD
2 stops25h 20mSWISS
Deal found 12/11$706
This Expedia deal was found by Cheapflights users on 12/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:15 pmIAD - PRG
2 stops18h 05mMultiple Airlines
Wed 12/176:15 amPRG - IAD
1 stop15h 20mMultiple Airlines
Deal found 12/9$712
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:00 pmIAD - PRG
1 stop16h 00mMultiple Airlines
Thu 1/88:15 pmPRG - IAD
2 stops30h 00mMultiple Airlines
Deal found 12/11$714
This CrystalTravel deal was found by Cheapflights users on 12/10. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:30 pmIAD - PRG
1 stop16h 40mSWISS
Thu 12/186:45 amPRG - IAD
1 stop14h 45mSWISS
Deal found 12/10$719
This Travelocity deal was found by Cheapflights users on 12/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:55 pmIAD - PRG
1 stop17h 30mMultiple Airlines
Wed 1/78:15 pmPRG - IAD
2 stops47h 45mMultiple Airlines
Deal found 12/11$723
This United Airlines deal was found by Cheapflights users on 12/9. 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 12/106:20 pmIAD - PRG
2 stops22h 05mUnited Airlines
Wed 12/176:15 amPRG - IAD
2 stops23h 06mUnited Airlines
Deal found 12/9$724
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:30 pmIAD - PRG
1 stop16h 30mSWISS
Thu 1/82:50 pmPRG - IAD
2 stops29h 10mSWISS
Deal found 12/11$726
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 pmIAD - PRG
1 stop10h 25mAustrian Airlines
Wed 1/711:05 amPRG - IAD
2 stops32h 55mAustrian Airlines
Deal found 12/10$727
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:25 pmIAD - PRG
1 stop33h 20mSWISS
Fri 1/96:45 amPRG - IAD
2 stops19h 30mSWISS
Deal found 12/11$735

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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$546
(KAYAK)

One-way from

$232
(oojo)

Popular in

June

Cheapest in

February

Average price

$738
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 ($117 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 12, 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 1/7

9:45 pm-10:50 pm

1 stop19h 05m

Václav Havel Prague

Mon 1/12

9:35 pm-3:35 pm

1 stop24h 00m

$595

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 1/7

9:45 pm-8:40 pm

1 stop16h 55m

Václav Havel Prague

Fri 1/16

6:00 am-7:55 pm

1 stop19h 55m

$595

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 1/7

9:45 pm-10:10 am

1 stop30h 25m

Václav Havel Prague

Mon 1/19

9:35 pm-3:35 pm

1 stop24h 00m

$595

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Mon 1/26

9:45 pm-10:55 am

2 stops31h 10m

Václav Havel Prague

Mon 2/2

10:20 am-3:35 pm

2 stops35h 15m

$624

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Mon 1/26

7:40 pm-8:25 am

3 stops30h 45m

Václav Havel Prague

Mon 2/2

6:00 am-6:30 pm

3 stops18h 30m

$629

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Fri 5/1

7:15 pm-1:15 pm

1 stop12h 00m

Václav Havel Prague

Fri 5/8

2:05 pm-8:20 pm

1 stop12h 15m

$635

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Fri 1/9

9:45 pm-6:25 pm

1 stop14h 40m

Václav Havel Prague

Tue 1/13

6:45 am-3:35 pm

1 stop14h 50m

$645

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Thu 1/8

6:20 pm-6:05 pm

1 stop17h 45m

Václav Havel Prague

Wed 1/14

6:30 pm-7:55 pm

1 stop31h 25m

$645

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Thu 1/8

9:45 pm-6:05 pm

1 stop14h 20m

Václav Havel Prague

Mon 1/19

9:35 pm-3:35 pm

1 stop24h 00m

$645

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Thu 1/8

6:20 pm-10:50 pm

1 stop22h 30m

Václav Havel Prague

Mon 1/12

11:00 am-3:35 pm

1 stop34h 35m

$645

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 21 results
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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 5, 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 12, 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.

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 12, 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
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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
1,810 reviews
SWISS
7.5
Good
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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
1,605 reviews
SWISS
7.5
Good
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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
9,095 reviews
SWISS
7.5
Good
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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
7,626 reviews
SWISS
7.5
Good
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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
7,571 reviews
SWISS
7.5
Good
1,810 reviews

Food

7.1

Comfort

7.4

Crew

8.3

Boarding

7.7

Entertainment

6.8

Overall

7.5

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 British Airways and Finnair fly from Washington, D.C. Dulles Intl Airport to Prague in about 19h 05m. The time it takes to get you to your destination can typically vary by up to 12h 05m. 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

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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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$416Average$563FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$427Average$482FlexibilityNo cancel feeOn-time77%
DeltaCheapest$525Average$796FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$526Average$710FlexibilityNo cancel feeOn-time79%
TAP AIR PORTUGALCheapest$528Average$789FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$547Average$687FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$561Average$594FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$862FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$563Average$822FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$611Average$922FlexibilityNo cancel feeOn-timeN/A

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