IAD - PRG

$232 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 3/6. 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
$545
Typical prices: $538-$705
Multiple Airlines
Sat 1/17Sat 1/31
IAD - PRG • 2 stops
Cheapest one-way
$232
Typical prices: $380-$1,206
Icelandair
Fri 3/6
IAD - PRG • 1 stop
Top airlines
Scandinavian Airlines
Cheapest • from $546 (round-trip)
SWISS
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 27% price drop
December
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

Sat, Jan 17 - Sat, Jan 31
Multiple Airlines Logo
7:40 pm - 9:05 pm
IAD
-
PRG
19h 25m2 stops
Multiple Airlines Logo
6:00 am - 6:30 pm
PRG
-
IAD
18h 30m2 stops
$545Multiple Airlines
Sat, Jan 10 - Sat, Jan 24
Scandinavian Airlines Logo
12:23 pm - 9:45 am
IAD
-
PRG
15h 22m2 stops
Scandinavian Airlines Logo
10:25 am - 7:09 pm
PRG
-
IAD
14h 44m2 stops
$546Scandinavian Airlines
Sat, Jan 24 - Sun, Feb 15
Scandinavian Airlines Logo
12:23 pm - 9:45 am
IAD
-
PRG
15h 22m2 stops
Scandinavian Airlines Logo
8:50 pm - 5:15 pm
PRG
-
IAD
26h 25m1 stop
$547Scandinavian Airlines
Tue, Mar 24 - Mon, Mar 30
Turkish Airlines Logo
2:30 pm - 6:30 pm
IAD
-
PRG
23h 00m1 stop
Turkish Airlines Logo
9:15 am - 7:45 pm
PRG
-
IAD
16h 30m1 stop
$548Turkish Airlines
Sat, Jan 17 - Fri, Jan 30
Scandinavian Airlines Logo
8:30 pm - 9:45 am
IAD
-
PRG
31h 15m1 stop
Scandinavian Airlines Logo
10:25 am - 7:09 pm
PRG
-
IAD
14h 44m2 stops
$550Scandinavian Airlines
Mon, May 4 - Wed, May 20
Scandinavian Airlines Logo
8:20 pm - 2:40 pm
IAD
-
PRG
12h 20m1 stop
Scandinavian Airlines Logo
8:20 pm - 4:50 pm
PRG
-
IAD
26h 30m2 stops
$554Scandinavian Airlines
Wed, Apr 22 - Mon, Apr 27
Scandinavian Airlines Logo
8:20 pm - 9:40 am
IAD
-
PRG
31h 20m1 stop
Scandinavian Airlines Logo
10:20 am - 4:50 pm
PRG
-
IAD
12h 30m1 stop
$556Scandinavian Airlines
Tue, Mar 31 - Mon, Apr 6
Turkish Airlines Logo
1:20 pm - 2:25 pm
IAD
-
PRG
19h 05m1 stop
Turkish Airlines Logo
1:55 pm - 11:35 am
PRG
-
IAD
27h 40m1 stop
$557Turkish Airlines
Thu, Apr 30 - Tue, May 5
Scandinavian Airlines Logo
8:20 pm - 8:50 am
IAD
-
PRG
30h 30m2 stops
Scandinavian Airlines Logo
6:35 pm - 4:50 pm
PRG
-
IAD
28h 15m2 stops
$558Scandinavian Airlines
Sat, Jan 17 - Sat, Jan 31
Scandinavian Airlines Logo
8:30 pm - 9:45 am
IAD
-
PRG
31h 15m1 stop
Scandinavian Airlines Logo
10:25 am - 7:09 pm
PRG
-
IAD
14h 44m2 stops
$560Scandinavian 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 January.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Prague?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Prague clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Prague on a Tuesday and more expensive on a Saturday. On your return trip to Washington Dulles Airport, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

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 $526 (return) on average. On the other hand, the most expensive months are June and April, where the average cost of round-trip tickets is $971 and $787 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 4 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$232
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 1% 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 $232 for a one-way ticket and $545 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 $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 1810 reviews
6.8Entertainment
7.7Boarding
7.1Food
7.4Comfort
8.3Crew
Airline reviews

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

10.0 ExcellentMargaret, Dec 2025
ATH - ZRH
Read more SWISS reviews

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 seats were so close together, when the man in front of me put his seat back, the screen in front of me was 9 inches from my face. There is no way to lean forward if I needed to pick something up. It was pretty uncomfortable for a ten hour flight. I was very surprised.

The food was good. Most the staff was pleasant. The flight would be drastically improved with WiFi on a long international flight.

The crew was very friendly and nice! Very smooth flight.

When I needed to get my bag off of the plane so that I could take a train because the connection was 4 hours later, they took 2 hours to take my bag off making me take the train and miss my flight simultaneously. The seat size on the plane is too small for an average aged woman let alone a middle-aged man. It's unacceptable and I will not fly Boeing again.

The flight was generally good but was delayed departure meant a very late arrival for a connecting flight.

Excellent service throughout. Airport process is quick and easy. Very courteous staff. Great service in the plane! Just outstanding punctuality and service overall!!

I have paid for extra legroom on my flight. My seat was broken and did not recline. The crew could not fix it and refused to provide me with another seat

Over all experience was good. However the connection time was too short at CPG. We missed our connecting flight to AMS as the passport control line was too long and by the time we got our passport control done it was too late I wish there were some SAS staff to help us out at the passport control center Though they put us in a KLM flight from CPG to AMS, That flight was also delayed by over two hours

No vegetarian option was provided for the regular meal or the pre-landing snack.

The Scandinavian flight was excellent, however the second flight was partnered with TAP Portugal which was not so good. crowded gate area with no chairs, delayed flight, bad boarding process, no entertainment system onboard, and the baggage didn’t get to the carousel until well over an hour which caused our taxi that was waiting to leave. Love SAS, hate TAP.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

I do not have a problem with the airline but both my two suitcases that were supposed to go from Hawaii to Copenhagen didn’t get on the plane in Seattle. I arrive on Monday the 21st at 10:30 in the morning. I did not get my two suitcases before Friday late afternoon that is unacceptable.

No choice of food. Needed to pay more even for a can of coke!!!

The seats were really close together and hard to get comfortable. The food was okay. The cheese was amazing! I loved the cold towels they gave us.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

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

Information on your arrival and departure airports