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$278+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PRG
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
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 January, booked 54 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Find 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 October 27, 2025.

This Icelandair deal was found by Cheapflights users on 10/26. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:40 pmIAD - PRG
1 stop10h 15mIcelandair
Sat 12/612:50 pmPRG - IAD
1 stop11h 40mIcelandair
Deal found 10/26$491
This FlightHub deal was found by Cheapflights users on 10/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:30 pmIAD - PRG
1 stop11h 50mScandinavian Airlines
Fri 12/59:05 pmPRG - IAD
1 stop27h 45mScandinavian Airlines
Deal found 10/26$493
This KAYAK deal was found by Cheapflights users on 10/25. 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 11/1712:11 pmIAD - PRG
2 stops15h 34mScandinavian Airlines
Tue 12/27:20 pmPRG - IAD
2 stops29h 59mScandinavian Airlines
Deal found 10/25$495
This SmartFares deal was found by Cheapflights users on 10/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:40 pmIAD - PRG
1 stop10h 15mIcelandair
Fri 11/2112:50 pmPRG - IAD
1 stop11h 40mIcelandair
Deal found 10/25$501
This KAYAK deal was found by Cheapflights users on 10/25. 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.
Thu 11/1312:11 pmIAD - PRG
2 stops15h 34mScandinavian Airlines
Fri 12/53:00 pmPRG - IAD
1 stop33h 50mScandinavian Airlines
Deal found 10/25$505
This Justfly.com deal was found by Cheapflights users on 10/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:11 pmIAD - PRG
2 stops15h 34mScandinavian Airlines
Wed 12/310:25 amPRG - IAD
1 stop12h 50mScandinavian Airlines
Deal found 10/26$507
This Scandinavian Airlines deal was found by Cheapflights users on 10/24. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/712:19 pmIAD - PRG
2 stops15h 26mScandinavian Airlines
Mon 12/1510:30 amPRG - IAD
2 stops14h 49mScandinavian Airlines
Deal found 10/24$513
This FlightHub deal was found by Cheapflights users on 10/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
Wed 12/1012:30 pmPRG - IAD
1 stop14h 30mTAP AIR PORTUGAL
Deal found 10/26$514
This CrystalTravel deal was found by Cheapflights users on 10/26. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2310:55 pmIAD - PRG
1 stop17h 30mLufthansa
Sun 12/71:45 pmPRG - IAD
1 stop12h 20mLufthansa
Deal found 10/26$515
This Scandinavian Airlines deal was found by Cheapflights users on 10/26. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:30 pmIAD - PRG
1 stop31h 15mScandinavian Airlines
Thu 12/410:25 amPRG - IAD
1 stop12h 50mScandinavian Airlines
Deal found 10/26$516
This FlightHub deal was found by Cheapflights users on 10/25. 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.
Tue 12/21:30 pmIAD - PRG
1 stop18h 20mTurkish Airlines
Tue 12/97:25 pmPRG - IAD
1 stop22h 20mTurkish Airlines
Deal found 10/25$517

Cheap 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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$488
(Justfly.com)

One-way from

$278
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$651
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. 16% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 27, 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

Tue 12/2

12:19 pm-9:45 am

2 stops15h 26m

Václav Havel Prague

Mon 2/23

10:25 am-5:15 pm

1 stop12h 50m

$523

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 12/3

5:40 pm-4:05 pm

1 stop16h 25m

Václav Havel Prague

Mon 12/8

7:35 am-8:54 pm

2 stops19h 19m

$550

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Sun 11/30

10:55 pm-10:25 pm

1 stop17h 30m

Václav Havel Prague

Mon 12/8

7:35 am-8:54 pm

2 stops19h 19m

$550

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Fri 11/28

12:11 pm-1:45 pm

2 stops19h 34m

Václav Havel Prague

Sun 12/7

6:00 am-4:05 pm

1 stop16h 05m

$552

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Fri 1/23

5:20 pm-1:05 pm

2 stops13h 45m

Václav Havel Prague

Fri 2/6

7:35 am-8:29 pm

2 stops18h 54m

$552

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 12/10

10:00 pm-10:25 pm

1 stop18h 25m

Václav Havel Prague

Wed 12/17

7:30 am-3:50 pm

1 stop14h 20m

$553

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 12/10

6:20 pm-6:50 pm

2 stops18h 30m

Václav Havel Prague

Mon 12/15

10:20 am-3:35 pm

2 stops35h 15m

$564

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Wed 12/3

6:20 pm-6:50 pm

2 stops18h 30m

Václav Havel Prague

Sun 12/14

7:35 pm-7:55 pm

2 stops30h 20m

$564

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Thu 11/13

12:11 pm-9:45 am

2 stops15h 34m

Václav Havel Prague

Fri 11/21

10:25 am-7:08 pm

2 stops14h 43m

$583

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

Tue 11/11

10:15 pm-10:25 pm

2 stops18h 10m

Václav Havel Prague

Wed 12/3

7:30 am-3:50 pm

1 stop14h 20m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 22 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Washington, D.C. Dulles Intl Airport-Prague flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Prague flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 October 24, 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 $423). Flying from Washington, D.C. Dulles Intl Airport to Prague in June is currently the most expensive (average of $612). 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 October 27, 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 October 27, 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
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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
1,774 reviews
SWISS
7.5
Good
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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
1,543 reviews
SWISS
7.5
Good
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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
8,996 reviews
SWISS
7.5
Good
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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
7,532 reviews
SWISS
7.5
Good
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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
7,479 reviews
SWISS
7.5
Good
1,774 reviews

Food

7.1

Comfort

7.4

Entertainment

6.8

Overall

7.5

Boarding

7.7

Crew

8.2

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, United Airlines, and Delta fly from Washington, D.C. Dulles Intl Airport to Prague in about 15h 26m. The time it takes to get you to your destination can typically vary by up to 4h 08m. 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 TAP AIR PORTUGAL, from $479. Icelandair is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • 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 $423). Flying from Washington, D.C. Dulles Intl Airport to Prague in June is currently the most expensive (average of $612). 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$416Average$563FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$427Average$482FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$479Average$830FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$525Average$777FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$547Average$687FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$561Average$597FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$872FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$563Average$829FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$578Average$854FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$578Average$721FlexibilityNo cancel feeOn-time79%

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