December is by far the best month, wherein you can get cheapest flights for Washington to Prague. Meanwhile, is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

IAD
21:00
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
11:00
Prague Vaclav Havel Airport Prague
Sun, 21 Dec 2025

IAD
17:05
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
11:00
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
09:00
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
14:05
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
22:00
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
14:05
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
21:15
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
18:30
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
20:30
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
08:40
Prague Vaclav Havel Airport Prague
Sun, 21 Dec 2025

IAD
18:10
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
22:40
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
18:00
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
10:25
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
17:25
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
13:55
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
17:45
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
10:50
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025

IAD
17:45
Washington Washington Dulles International Airport
Fri , 19 Dec 2025

PRG
10:50
Prague Vaclav Havel Airport Prague
Sat, 20 Dec 2025









