IAD - PRG

$271 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 7/6. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Dulles Intl to Prague

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to Prague.
Discover the best prices for you by selecting your travel dates on KAYAK.
Scandinavian Airlines Logo
10:05 pm - 8:15 pmIAD-PRG
16h 10m1 stop
Scandinavian Airlines Logo
8:45 pm - 7:59 pmPRG-IAD
29h 14m1 stop
$439Scandinavian Airlines
Find Deal
Wed, Oct 8 - Mon, Oct 13
Scandinavian Airlines Logo
10:05 pm - 8:15 pmIAD-PRG
16h 10m1 stop
Scandinavian Airlines Logo
10:55 am - 7:59 pmPRG-IAD
15h 04m2 stops
$446Scandinavian Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 9
Scandinavian Airlines Logo
10:05 pm - 10:10 amIAD-PRG
30h 05m2 stops
Scandinavian Airlines Logo
7:35 pm - 7:59 pmPRG-IAD
30h 24m2 stops
$455Scandinavian Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 13
Icelandair Logo
8:30 pm - 1:05 pmIAD-PRG
10h 35m1 stop
Icelandair Logo
2:00 pm - 10:10 pmPRG-IAD
14h 10m1 stop
$514Icelandair
Find Deal
Sun, Oct 12 - Sun, Oct 19
Icelandair Logo
8:30 pm - 1:05 pmIAD-PRG
10h 35m1 stop
Icelandair Logo
2:00 pm - 10:10 pmPRG-IAD
14h 10m1 stop
$521Icelandair
Find Deal
Sun, Oct 5 - Sun, Oct 12
United Airlines Logo
3:55 pm - 12:55 pmIAD-PRG
15h 00m2 stops
United Airlines Logo
2:30 pm - 4:10 pmPRG-IAD
31h 40m2 stops
$632United Airlines
Find Deal
Tue, May 20 - Tue, Jun 3
United Airlines Logo
3:55 pm - 12:55 pmIAD-PRG
15h 00m2 stops
United Airlines Logo
1:35 pm - 7:25 pmPRG-IAD
11h 50m1 stop
$636United Airlines
Find Deal
Tue, May 20 - Tue, Jun 3
British Airways Logo
10:40 pm - 9:35 amIAD-PRG
28h 55m1 stop
British Airways Logo
5:45 pm - 5:25 pmPRG-IAD
29h 40m1 stop
$706British Airways
Find Deal
Sun, May 11 - Sat, May 17
Lufthansa Logo
10:20 pm - 9:20 pmIAD-PRG
17h 00m1 stop
Lufthansa Logo
4:40 pm - 1:30 pmPRG-IAD
26h 50m2 stops
$789Lufthansa
Find Deal
Sun, May 11 - Sat, May 17
Lufthansa Logo
6:10 pm - 12:55 pmIAD-PRG
12h 45m2 stops
Lufthansa Logo
6:20 am - 3:50 pmPRG-IAD
15h 30m2 stops
$801Lufthansa
Find Deal
Fri, Aug 29 - Sat, Sep 13
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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.

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 $582 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $1,187 and $1,038 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. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
High seasonDecember
Cheapest flight$271
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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 $271 for a one-way ticket and $439 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?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Prague, with Star Alliance 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 $1,028 and an overall rating of 8.0, Delta is the most popular choice. SWISS is also a great choice for the route, with an average price of $848 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.

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.
7.4
United AirlinesOverall score based on 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

They cancelled our flight home less than 24 hours before it was supposed to leave. It partially ruined our last day because I was on the phone trying to get 5 people home and the stress that it causes. We still arrived at the airport with no definite flight plans. The actual flight was good but my kids really misses the kids meals I had ordered for them which obviously didn’t make it to the new flight.

Very helpful in getting us off the plane first to make a tight connection.

Very unfriendly approach to me when you rescheduled my return flight due to your delay. No help to address my health concerns because I am diabetics and had orthopedic problems. No clear explanation where to clear customs. I had poor customer service

The seats were really cramped. The high backs on the chairs made you feel claustrophobic.

Boarding was chaotic and the flight left late but arrived at a decent time. This may have been because of the sxsw festival that was going on.

I was pleasantly surprised as it was my first time flying with them. The seats were comfortable with more legroom than usual. The service was great too! The entertainment was good but could use a few more new movies.

The flight got canceled and you just send an email in the middle of the night and no solution to how to get on the next flight or provide other solutions.

You cost me my time and did not compensate properly. Gfy.

Missed a connecting flight and SAS was at fault. I was awarded a $20 voucher in exchange for 8 hours of my time? Gfy.

Seat was lumpier than I’ve ever remembered it to be although comfortable when tilted back. I don’t recall being that hungry after being served food from SAS before. Flight attendant on the second flight to Aalborg seemed to be having a bad day.

Smooth efficient airline. Think they should have their own bag drop as the queue took 30mins to bmscan and drop

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Bad. Flights were late, by hours. No clear information was provided even until the delayed boarding time.

take snacks and food. purchase options in flight are not great

Had a screaming child next to us. Not the airline’s fault but still annoying.

Highly disorganized company, poor customer service. Packed seats on a 737 for a trans-atlantic 9 hour flight. Greedy company policies, no meal or snack provided for 9 hour flight.

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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

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