$672 Cheap Flights from Washington (IAD) to Ostrava (OSR)

View $672 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Ostrava (OSR-Leos Janacek)

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Cheap Flights from Washington to Ostrava (IAD-OSR)

Prices were available within the past 7 days and start at $672 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Washington (IAD) to Ostrava (OSR)
Origin airport
Washington Dulles Intl.
Destination airport
Leos Janacek
Distance
4455 mi

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Leos Janacek Airport (OSR) cost?
Discover the latest flight deals from IAD to OSR 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 OSR?
The cheapest flights from IAD to OSR 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 OSR?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to OSR. 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 Leos Janacek Airport (OSR)?
You'll have to take a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Leos Janacek Airport (OSR). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to OSR?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the season, airline and other factors.*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 Leos Janacek Airport (OSR)?
To land at Leos Janacek Airport (OSR) on schedule, pick a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The chance 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 Leos Janacek Airport (OSR) last-minute?
Booking your flight from IAD to OSR just before your getaway is typically more expensive. But if you're flexible with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an IAD to OSR flight and hotel package?
You can save money by securing an IAD to OSR flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your preferred flights and accommodations, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Leos Janacek Airport (OSR)?
If you reserved your IAD to OSR flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

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