IAD - PRG

$330 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 8/6. 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
$616
Typical prices: $787-$501
Scandinavian Airlines
Sun 9/20Wed 9/30
IAD - PRG • 1 stop
Cheapest one-way
$330
Typical prices: $267-$476
Lufthansa
Thu 8/6
IAD - PRG • 1 stop
Top airlines
Cheapest • from $616 (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 $682 (round-trip)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 47% 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
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, Sep 20 - Wed, Sep 30
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
1 stop
$616Scandinavian Airlines
Wed, Oct 7 - Sun, Oct 18
Scandinavian Airlines Logo
8:20 pm - 8:15 pm
IAD
-
PRG
17h 55m
1 stop
Scandinavian Airlines Logo
9:30 pm - 5:00 pm
PRG
-
IAD
25h 30m
1 stop
$621Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 26
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
PRG
-
IAD
12h 40m
1 stop
$624Scandinavian Airlines
Wed, Sep 16 - Sun, Sep 20
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m
1 stop
Scandinavian Airlines Logo
9:30 pm - 5:00 pm
PRG
-
IAD
25h 30m
1 stop
$626Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 26
Scandinavian Airlines Logo
8:20 pm - 8:15 pm
IAD
-
PRG
17h 55m
2 stops
Scandinavian Airlines Logo
10:20 am - 5:00 pm
PRG
-
IAD
12h 40m
1 stop
$631Scandinavian Airlines
Thu, Oct 15 - Thu, Oct 29
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m
1 stop
Scandinavian Airlines Logo
10:25 am - 6:15 pm
PRG
-
IAD
12h 50m
1 stop
$634Scandinavian Airlines
Wed, Sep 23 - Wed, Oct 7
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
$636Scandinavian Airlines
Fri, Oct 23 - Fri, Nov 6
Scandinavian Airlines Logo
8:20 pm - 8:15 pm
IAD
-
PRG
17h 55m
1 stop
Scandinavian Airlines Logo
9:05 pm - 6:50 pm
PRG
-
IAD
27h 45m
1 stop
$638Scandinavian Airlines
Sat, Sep 19 - Wed, Sep 23
Scandinavian Airlines Logo
8:20 pm - 8:50 pm
IAD
-
PRG
18h 30m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
PRG
-
IAD
12h 40m
1 stop
$640Scandinavian Airlines
Sun, Oct 11 - Thu, Oct 15
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
1 stop
$644Scandinavian 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 September.

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 April and June, where the average cost of round-trip tickets is $775 and $763 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 8 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$330
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 6% 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 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Prague was $330 for a one-way ticket and $616 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 $796 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 $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 1924 reviews
8.3Crew
7.7Boarding
7.1Food
6.8Entertainment
7.4Comfort
Airline reviews

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.

6.0 GoodSonja, Jan 2026
BOS - ZRH
Read more SWISS reviews

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.

Smooth boarding, on time flight, decent food and entertainment options.

Food used to be better and comfort was not attainable after 5 hours everything starts hurting.

horrible.. they cause such a problem and my daughter 14 years old was stranded in san francisco

I can’t even the whole trip was a catastrophe

Poor. Seats uncomfortable. No leg room. Hot and humid the whole trip. Food and staffs were ok.

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..

The crew was friendly, the flight was pleasant. Thank you for your service!

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

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

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

Poor. Plane left EWR late hence missed connecting flight in Dublin. No pro active info from flight staff on connection, only when probed a couple of lies on where we would dock, and on lilelyhood catching connecting flight. Lies as they will have known our EWR-DUB would be parked furthest away from the transit spit - lying it would be next to the AMS flight.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

Economy seats a bit small but other than that it was all good.

I flew economy class. Seats were very good and the crew was excellent

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

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

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

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

Information on your arrival and departure airports