IAD - PRG

$284 Find Cheap Flights from Washington Dulles Airport to Prague

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 11/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Prague

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Prague.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Prague.
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Everything you should know

Cheapest round-trip
$782
Typical prices: $863-$682
Icelandair
Tue 7/28Tue 8/11
IAD - PRG • 1 stop
Cheapest one-way
$284
Typical prices: $417-$457
Icelandair
Thu 11/19
IAD - PRG • 1 stop
Top airlines
Cheapest • from $785 (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 $693 (round-trip)
Shortest trip • 10h 52m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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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

Tue, Jul 28 - Tue, Aug 11
Multiple Airlines Logo
8:30 pm - 1:05 pm
IAD
-
PRG
10h 35m
1 stop
Multiple Airlines Logo
6:20 am - 10:45 am
PRG
-
IAD
34h 25m
2 stops
$782Multiple Airlines
Sun, Jul 26 - Tue, Aug 11
Multiple Airlines Logo
8:30 pm - 9:55 pm
IAD
-
PRG
19h 25m
2 stops
Multiple Airlines Logo
6:20 am - 8:24 pm
PRG
-
IAD
20h 04m
2 stops
$784Multiple Airlines
Thu, Aug 27 - Mon, Sep 7
Turkish Airlines Logo
1:20 pm - 1:00 pm
IAD
-
PRG
17h 40m
1 stop
Turkish Airlines Logo
3:20 pm - 11:35 am
PRG
-
IAD
26h 15m
1 stop
$785Turkish Airlines
Tue, Aug 18 - Tue, Sep 15
Scandinavian Airlines Logo
12:29 pm - 2:40 pm
IAD
-
PRG
20h 11m
2 stops
Scandinavian Airlines Logo
8:55 pm - 5:00 pm
PRG
-
IAD
26h 05m
1 stop
$791Scandinavian Airlines
Sat, Nov 21 - Sun, Nov 29
Scandinavian Airlines Logo
8:30 pm - 6:35 pm
IAD
-
PRG
16h 05m
2 stops
Scandinavian Airlines Logo
8:50 pm - 5:15 pm
PRG
-
IAD
26h 25m
1 stop
$792Scandinavian Airlines
Sat, Aug 22 - Mon, Aug 31
Multiple Airlines Logo
8:30 pm - 9:05 pm
IAD
-
PRG
18h 35m
2 stops
Multiple Airlines Logo
9:35 am - 3:10 pm
PRG
-
IAD
35h 35m
2 stops
$793Multiple Airlines
Tue, Aug 25 - Mon, Sep 7
Turkish Airlines Logo
9:45 pm - 8:20 am
IAD
-
PRG
28h 35m
1 stop
Turkish Airlines Logo
1:55 pm - 11:35 am
PRG
-
IAD
27h 40m
1 stop
$794Turkish Airlines
Thu, Sep 24 - Sun, Oct 4
Scandinavian Airlines Logo
8:20 pm - 8:15 pm
IAD
-
PRG
17h 55m
1 stop
Scandinavian Airlines Logo
8:55 pm - 5:00 pm
PRG
-
IAD
26h 05m
2 stops
$796Scandinavian Airlines
Thu, Aug 6 - Wed, Aug 26
Lufthansa Logo
5:55 pm - 11:00 am
IAD
-
PRG
11h 05m
1 stop
Lufthansa Logo
9:10 am - 4:05 pm
PRG
-
IAD
12h 55m
1 stop
$799Lufthansa
Wed, Aug 12 - Fri, Aug 21
Lufthansa Logo
10:20 pm - 4:00 pm
IAD
-
PRG
11h 40m
1 stop
Lufthansa Logo
9:10 am - 4:05 pm
PRG
-
IAD
12h 55m
1 stop
$803Lufthansa
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 July.

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 October, where tickets cost $497 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $851 and $783 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 2 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$284
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 22% 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 $284 for a one-way ticket and $782 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 $762 and an overall rating of 7.9, Delta is the most popular choice. SWISS is also a great choice for the route, with an average price of $710 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 1968 reviews
7.4Comfort
6.8Entertainment
7.7Boarding
8.3Crew
7.1Food
Airline reviews

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

4.0 OkayAnonymous, May 2026
TPA - ZRH
Read more SWISS reviews

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.

The flight and all amenities were good to excellent. SWISS was awful to deal with. Every step of the way they nickel and dime you. Chose your seats? $14. Change your seats… No accounting for the prior payment. You get billed again. 17 pound restriction on overhead luggage, nonsense. It’s a weight in the plane whether it’s in the overhead or in check baggage. They just milk you for every cent they can and I resent it. The flight was excellent.

plenty of legspace, snacks, no pull face from flight attendants when asking for a wine. Also fast transfer ability at ZRH.

Entertainment sounds were not good. Otherwise everything else was good.

The flight itself was fine, but due to a snow delay my connection to Lisbon was delayed by six hours. Despite this, Swiss Air still managed to lose my luggage. Not acceptable. Someone else on the flight also lost their luggage.

Bad experience overall. Crew did not provide food for our 2 year old (even though we specifically bought a child infant seat for her and literally bought another full price flight), which was unacceptable. And we had to pay $310 each way to carry our ski equipment even though they advertise it as something that is free. Tickets were purchased the same way as usual, but they told us we had Economy Light tickets (I never elected to have such seats). Just plain manipulation and false advertisment. Very disappointed overall about this airline.

The trip was great until my luggage was lost on transfer from United to Swiss. It took Swiss 3 days to get my luggage to me though it was located almost immediately.

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

We’ve never been more uncomfortable on a flight than we have on this particular one. The seats in front of us reclined so far back that when the person reclined their seat of broccoli, it almost hit me in the face and left me with literally no room to move that said I had to recline my seed in which made the person behind me upset. It seemed like the seats also would recline without even pressing the button in the armrest and would unrecline as well for that same reason, and it also seemed that some seats reclined more than others. The bottom cushions of the seat were so thin that even after one hour of an 11 hour flight, our tailbones were so sore. It seemed like an overall old airplane. It also didn’t have individual air vents and it was extremely hot the entire flight. Several passengers were commenting on how hot it was. The breakfast was some kind of flavorless triangle, puffy egg, laying in a watery bed of steamed peppers and onions and spinach. It was not appetizing at all. The flight crew was extremely nice so that was a nice thing this flight attendant. They let us try different types of Swiss sodas, which was really nice and the dinner was actually delicious but still overall given the other considerations. It was pretty much a miserable flight without basic seat comfort.

Every flight got canceled or delayed. Customer service was awful.

They lost my luggage and can’t find it. My trip is ruined. Online tracking of lost luggage doesn’t work

No free Wi-Fi. I have SkyMiles but not a high status, having an account has been enough for Wi-Fi on other flights, but this one was going to charge me to use it. Also turbulence was really bad toward the end, but I didn't count this in my ratings since I know Delta cannot control the weather - it's 2026 and lack of WiFi alone is enough for a poor rating.

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

Cancelled flight, wasn't refunded paid selected seats. Poor customer service. Called airline and they didn't realize the flight was cancelled until several hours after the email notice was sent.

The worst with the trip was the space in economy, my knees are still hurting. There was no way to control personal air by turning a knob above you, it was way to hot on both rides. During the night flight they allowed 2 people from across the aile which was narrow to sit and talk for 7 hours while also using tablets and the flashlight from their phones pointing into the row where I sat at times. They allowed people with way too large baggage to bring onboard. I paid way too much for the ticket ($1,364} for economy. Kayak misinformed me to get cancellation insurance that was only valid for a very short time (less than 12 hours) and was over one hundred dollars. Hotel booking was incorrect, I had the room booked myself at the hotel, only double or larger rooms available which I paid over 400 dollars for. I will never fly with SAS again unless there is no other alternative.

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

Crew members were excellent. The seat wasn’t the best as well as a food options.

5 of my 7 pieces of luggage are missing and they cant call to find out where it is. I have to fill out a form and wait for them to mail it to me in several days (if they find it). That does not work for my travel itinerary. I need my full ticket cost refunded please.

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

We were an hour and a half late, which caused my rental car company to cancel my reservation. We had no car, had to take a taxi to our hotel, and then a taxi back to get a new car the next day. Sometimes lack of on-time performance can end up costing the passenger a lot of money, none of which is covered by the airline that operated the late flight.

Overall good experience. But seats were small and uncomfortable for the price. Good entertainment, staff friendly and attentive.

Flight crew was very cold and stood around a lot talking to each other.

Smooth quiet flight take off and landing both excellent. Food was mediocre. Boarding at gate was disorganized and unacceptable.

Very good trip. Nice clean aircraft. Helpful and friendly crew.

Crew members Grainne and Karen were extremely rude and unprofessional

I am very disappointed in that KAYAK sold me this flight as a business class it was not a business class. It was a regular economy class ticket. This was not Art Linus mistake. It was kayaks.

Crew was friendly and seats were comfortable. The connection however there were no free snacks or drinks.

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Parents with permanently crying baby on board. Neither parents nor crew did anything to calm the baby. The food was extremely disappointing. Seafood stew was very, very small! Not even appetizer size! Seat had a gap in the back. Had to use a pillow to fill it.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

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

Information on your arrival and departure airports