$268 Cheap Flights from Washington (IAD) to Prague (PRG)

View $268 flight on Sat, Oct 18, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG)

Cheap Flights from Washington to Prague (IAD-PRG)

Prices were available within the past 7 days and start at $268 for one-way flights and $447 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Wed, Oct 15 - Tue, Oct 28
IAD
Washington
PRG
Prague
$447 Roundtrip, found 4 days ago
$447
Roundtrip
found 4 days ago
Select Scandinavian Airlines flight, departing Wed, Oct 15 from Washington to Prague, returning Tue, Oct 28, priced at $447 found 4 days ago
Scandinavian Airlines
Thu, Dec 4 - Thu, Dec 11
IAD
Washington
PRG
Prague
$465 Roundtrip, found 4 hours ago
$465
Roundtrip
found 4 hours ago
Select Scandinavian Airlines flight, departing Thu, Dec 4 from Washington to Prague, returning Thu, Dec 11, priced at $465 found 4 hours ago
Scandinavian Airlines
Thu, Dec 4 - Thu, Dec 11
IAD
Washington
PRG
Prague
$475 Roundtrip, found 4 hours ago
$475
Roundtrip
found 4 hours ago
Select Scandinavian Airlines flight, departing Thu, Dec 4 from Washington to Prague, returning Thu, Dec 11, priced at $475 found 4 hours ago
Icelandair
Fri, Dec 5 - Fri, Dec 12
IAD
Washington
PRG
Prague
$536 Roundtrip, just found
$536
Roundtrip
just found
Select Icelandair flight, departing Fri, Dec 5 from Washington to Prague, returning Fri, Dec 12, priced at $536 just found
TAP Portugal
Tue, Sep 2 - Tue, Sep 9
IAD
Washington
PRG
Prague
$578 Roundtrip, found 14 hours ago
$578
Roundtrip
found 14 hours ago
Select TAP Portugal flight, departing Tue, Sep 2 from Washington to Prague, returning Tue, Sep 9, priced at $578 found 14 hours ago
Aer Lingus
Wed, Nov 26 - Thu, Dec 4
IAD
Washington
PRG
Prague
$588 Roundtrip, found 1 day ago
$588
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Wed, Nov 26 from Washington to Prague, returning Thu, Dec 4, priced at $588 found 1 day ago
Delta
Wed, Aug 13 - Tue, Aug 26
IAD
Washington
PRG
Prague
$602 Roundtrip, found 4 days ago
$602
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Aug 13 from Washington to Prague, returning Tue, Aug 26, priced at $602 found 4 days ago
Turkish Airlines
Thu, Sep 4 - Wed, Sep 10
IAD
Washington
PRG
Prague
$607 Roundtrip, found 11 hours ago
$607
Roundtrip
found 11 hours ago
Select Turkish Airlines flight, departing Thu, Sep 4 from Washington to Prague, returning Wed, Sep 10, priced at $607 found 11 hours ago
United
Sun, Aug 17 - Tue, Aug 26
IAD
Washington
PRG
Prague
$607 Roundtrip, found 3 days ago
$607
Roundtrip
found 3 days ago
Select United flight, departing Sun, Aug 17 from Washington to Prague, returning Tue, Aug 26, priced at $607 found 3 days ago
British Airways
Tue, Apr 21 - Tue, May 12
IAD
Washington
PRG
Prague
$608 Roundtrip, found 9 hours ago
$608
Roundtrip
found 9 hours ago
Select British Airways flight, departing Tue, Apr 21 from Washington to Prague, returning Tue, May 12, priced at $608 found 9 hours ago

Find the cheapest month to fly from Washington (IAD) to Prague (PRG)

November is typically the cheapest month to fly

From $403 - $894 per traveler.

Graph displaying average flight prices per month

Flights from Washington (IAD) to Prague (PRG)
Origin airport
Washington Dulles Intl.
Destination airport
Vaclav Havel
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$446
Distance
4292 mi

Washington to Prague Flights

The cheapest times to fly from Washington to Prague

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Prague are during the month of October. You can find some of the cheapest flights from Washington to Prague with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Prague

Sunday is one of the best days to book for cheap flights from Washington to Prague: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Prague

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Prague in 2025. You can also book with separate airlines for your outbound and return journeys, from $268 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Prague flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Prague airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG) cost?
Discover the latest flight deals from IAD to PRG by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to PRG?
The cheapest flights from IAD to PRG are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to PRG?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to PRG. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to PRG?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG)?
To reach Vaclav Havel Airport (PRG) without delays, pick a flight that leaves from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG) last-minute?
Last-minute fares from IAD to PRG are typically more expensive. To lock in the lowest rates, start searching for flights ahead of time. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book an IAD to PRG flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to PRG flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the stress out of planning your trip. Simply pick your flights and choose from our wide range of hotels, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Vaclav Havel Airport (PRG)?
It's usually possible to cancel or reschedule your IAD to PRG flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.