IAD - PRG

$255 Find Cheap Flights from Washington Dulles Airport to Prague - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Prague departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$621
Typical prices: $686-$1,231
Icelandair
Sun 12/6Fri 12/11
IAD - PRG • 1 stop
Cheapest one-way
$255
Typical prices: $340-$539
Multiple Airlines
Mon 8/31
IAD - PRG • 3 stops
Top airlines
Cheapest • from $621 (round-trip)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Prague. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $686 (round-trip)
Shortest trip • 10h 44m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 62% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Prague!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Prague (IAD-PRG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Prague that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Prague

Sun, Dec 6 - Fri, Dec 11
Icelandair Logo
7:40 pm - 11:55 am
IAD
-
PRG
10h 15m
1 stop
Icelandair Logo
12:50 pm - 6:30 pm
PRG
-
IAD
11h 40m
1 stop
$621Icelandair
Thu, Dec 10 - Mon, Dec 14
Icelandair Logo
7:40 pm - 11:55 am
IAD
-
PRG
10h 15m
1 stop
Icelandair Logo
12:50 pm - 6:30 pm
PRG
-
IAD
11h 40m
1 stop
$621Icelandair
Mon, Aug 17 - Mon, Aug 31
TAP AIR PORTUGAL Logo
10:35 pm - 6:15 pm
IAD
-
PRG
13h 40m
1 stop
TAP AIR PORTUGAL Logo
7:30 pm - 3:10 pm
PRG
-
IAD
25h 40m
1 stop
$637TAP AIR PORTUGAL
Thu, Oct 22 - Wed, Nov 4
TAP AIR PORTUGAL Logo
5:45 pm - 12:35 pm
IAD
-
PRG
12h 50m
1 stop
TAP AIR PORTUGAL Logo
12:30 pm - 8:35 pm
PRG
-
IAD
14h 05m
1 stop
$637TAP AIR PORTUGAL
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
8:20 pm - 11:15 am
IAD
-
PRG
32h 55m
3 stops
Multiple Airlines Logo
11:55 am - 5:00 pm
PRG
-
IAD
35h 05m
3 stops
$641Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
8:20 pm - 11:15 am
IAD
-
PRG
32h 55m
3 stops
Multiple Airlines Logo
2:15 pm - 5:00 pm
PRG
-
IAD
32h 45m
3 stops
$644Multiple Airlines
Mon, Oct 12 - Sat, Oct 17
Turkish Airlines Logo
9:40 pm - 6:25 pm
IAD
-
PRG
14h 45m
1 stop
Turkish Airlines Logo
3:20 pm - 11:30 am
PRG
-
IAD
26h 10m
1 stop
$690Turkish Airlines
Tue, Nov 17 - Mon, Nov 23
Turkish Airlines Logo
9:20 pm - 6:25 pm
IAD
-
PRG
15h 05m
1 stop
Turkish Airlines Logo
7:20 pm - 7:25 pm
PRG
-
IAD
30h 05m
1 stop
$690Turkish Airlines
Sun, Oct 4 - Wed, Oct 14
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m
1 stop
Scandinavian Airlines Logo
8:20 pm - 5:00 pm
PRG
-
IAD
26h 40m
2 stops
$707Scandinavian Airlines
Sun, Oct 11 - Wed, Oct 14
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m
1 stop
Scandinavian Airlines Logo
8:20 pm - 5:00 pm
PRG
-
IAD
26h 40m
2 stops
$707Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Prague flights

Get data-powered insights and trends into flights from Dulles Intl to Prague to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Prague?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Prague departing in December.

Flight prices are typical for this route right now.

Flights to Prague from Washington, D.C. Dulles Intl Airport usually cost between $583 and $732 in December.
The lowest price found in the past 5 days was $621 on Icelandair (Dec 10-Dec 14).

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Prague?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Prague, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Prague is February, where tickets cost $596 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $929 and $925 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Prague?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Prague, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Prague, you should book around 6 weeks before departure, which saves you about 62% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

February

Cheapest flight

$255
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Washington Dulles Airport to Prague

When to book flights from Dulles Intl to Prague

Are your dates flexible? Find out the best times to travel from Dulles Intl to Prague based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Prague flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Prague?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Prague was $255 for a one-way ticket and $621 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Prague?

    Yes, you’ll need a passport to travel to Prague from Washington Dulles Airport.

  • Which airports will I be using when flying from Washington Dulles Airport to Prague?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Prague, also known as Václav Havel Prague.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Prague?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Prague?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Prague, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Prague from Washington Dulles Airport?

    Frankfurt am Main is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Prague.

  • Which is the best airline for flights from Washington, D.C. to Prague, Delta or SWISS?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Prague are Delta and SWISS. With an average price for the route of $866 and an overall rating of 7.8, Delta is the most popular choice. SWISS is also a great choice for the route, with an average price of $705 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Prague?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Prague.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Prague?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Prague from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Prague?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Prague with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and PRG can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Prague?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Prague from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Dulles Intl to Prague

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Prague. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Prague? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
SWISSOverall score based on 2021 reviews
7.4Comfort
7.1Food
7.7Boarding
8.3Crew
6.8Entertainment
Airline reviews

The food could have been better but everything else was superb.

10.0 ExcellentCourtney, Jul 2026
LAX - ZRH
Read more SWISS reviews

The food could have been better but everything else was superb.

Terrible airline both Swiss and Lufthansa that are part of the same corp. stay away if you can

The flight attendants are amazing. The plane itself was not in good shape for passenger comfort. A good share of seat reclines were broken so they went back an unlimited amount, which meant the person in front of me was fully in my lap (the crew helped me find another seat but that would not have been possible on a full flight). Moisture from the ventilation was also dripping on me. And the entertainment system is almost impossible to hear.

3hr delay and then missed connecting flight with another 6hr wait at the airport before getting a continuation to my trip, worst trip ever in my 50+years of flight travel

Without a doubt, my “customer service” experience with SWISS was the worst of my life. Multiple disconnections in conversations, very cold and indifferent staff, failure to follow up with promised status updates — simply put, T. H. E. W. O. R. S. T. A full week later, and I am STILL waiting to hear from them. Never again for me with SWISS. Disgraceful.

Horrible!! The WiFi was not working, the food was awful

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

Excellent Airline. Food, crew and comfort was perfect. Entertainment screens were old. Didn’t like them.

Flight was very full and we had to checkin our carry on. Stuff however promised us that our luggage will be the first one to come out and it did

Crew members were good. Seats were packed and too tight .

No crying babies the whole flight would be nice. Impossible to sleep. No free snacks , only the main meal

The crew was amazing. Our seats was not very clean and even that was not a full flight but our seats was right beside the WC which did not let us to have a moment of rest.

Excellent service, and came on time! Thank you for your dinner that was chicken with salat/, and 🍰 it was good quality food , the breakfast was very good with good cheese , butter,etc and the tea was very good quality. The space where I was seat was nice so I could stretch my legs. I dit not have the bread as I am in a keto died. Have great time everyone in Scandinavia airline.

You cancelled my flight and didn't arrange another. Sent no info except YOUR FLIGHT HAS BEEN CANCELLED. HERES WHAT TO DO NEXT. and the rest of the email was blank???

Mediocre. Maybe due to Economy light. Staff was great. Space shrunk, not for me, and definitely not for Vikings. Food was decent. Assistance lagging. There was a possibility to upgrade to Premium economy, however my bid was immediately classified as low and not even considered (though well over minimum bid). Thus I was no bleeding dry.

Basic flight. Great for something under two hours. Seats were a bit dated and uncomfortable

The stewardess was incredibly rude. The gave you only one drink with dinner.

Excellent crew members, but my seat and food wasn’t the best

Crew was unresponsive to request for a soda. Food was horrible and I’d venture to guess many others thought so as well by the amount that they trashed. Made me sick to my stomach and ended up in bed the remainder of the day once we arrived. Screaming child for 3/4 of the almost 8 hour flight. Crew had no headphones whatsoever for free or purchase. Seating way too tight and we upgraded our seats. I do not see us ever flying this airline again.

Boarding and crew were excellent. Seat could have been more comfortable (hard on lower back).

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

For my wife to be seated with our two children they put them in the last row on the plane where the seats don’t recline very much. The seats in front of them reclined fully which is basically in the lap of the last row which made it difficult to eat, move or watch the entertainment provided.

Due to late arrival flight we missed the connection. There's no way possible we could have made it through customs and made the flight to Prague given the time allowed. Even if there was no delay from MIA to FRA I question if we would have made the PRA flight.

Awful customer service. What you are told 100% depends on who you talk to.

I love flying with them, the long-haul was fantastic. The short flight from Dublin --> Switzerland was horrible though. Most narrow seats I ever had, first and only time in my life I couldn't even close the seatbelt in seat 1A which was very embarrassing so I had to sit in the middle, because that seatbeld was 20cm longer. No idea why seat 1A would have a much shorter belt, it's just ridicilous. Also I hate the fixed seats, way too narrow.

Food was mediocre, but as expected in economy class on an airline. Wrap was ice cold , my son’s served by a steward on the next aisle was warm . As expected, but at least heat the food up a bit. No frills, but it’s economy. Excellent free WiFi was a bonus

I flew Aer Lingus Business class for the first time. Having flown economy a few times, I was familiar with the airline, and happy enough with economy. I’ve certainly been in nicer economy airlines before, but Aer Lingus is usually very reasonable, and I find the staff to be kind and have an Irish sense of humor and accommodation. The business experience was good, in that you got superior service to the back, lay down seats, better food and drinks, and more attentive service. However, the plane was a bit older, the WiFi was slow(not Starlink) and the pods were too close to one another for privacy, or function. When the Oder lady to the left of me fell asleep(fully reclined) there was no way for me to escape without having to wake her and put her seat all the way up. That lead to me being stuck with luggage I couldn’t put away in a cramped(for business) space, and no way to use the restroom for almost the whole 8 1/2 hour trip. I ended up trying to sleep with a large backpack blocking my feet. The food was good for plane food, but not great. The drinks were great, shame I couldn’t have had more, but I’d have peed myself. I love a window, but next time maybe an isle seat. Overall, the experience was good, not great, but an expensive good experience during which I got zero sleep. I’d do it again, but it’d have to be a deal.

The direct flight was a superb idea; please continue. The seats were less than comfortable for such a long flight.

We missed that flight, and I am hoping that we will got the refund. It was very confusing to figure out about Aer Lingus operated by American Airlines. Then we bought another more expensive ticket to travel.

The check in and boarding process was smooth, and the flight was fine.

Flight crew was superb. Meal was one of the meals at altitude I’ve had

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Very efficient and excellent service. Nice amenities and beautiful plane. Elevated meals. Boarding could have been more organized. We missed our connecting flight due to EU entry but Lufthansa was extremely quick to rebook us.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Lufthansa staff was fantastic, but the airport was a mess. I was at this airport in the past and I have never experienced any problem, but this time it was nutty because of soccer tournament: UEFA 2024 championship

What food? What entertainment? The questionnaire does not make sense.

The transatlantic leg was on Discover Airlines. I’m 6’2” and the extra leg room seat was acceptable, the seat it self was moderately comfortable (slightly softer than a church pew). The food was a standard economy fare. Frankfurt to Prague leg was on Lufthansa the business class was as advertised 10 across the board.

It was only an hour flight, but at that, it was still late

Everything you need to know for your flight from Dulles Intl to Prague

Information on your arrival and departure airports