IAD - CGN

$408 Find Cheap Flights from Washington Dulles Airport to Cologne

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 Cologne departing on 9/24. 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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KAYAK searches hundreds of travel sites at once for deals on flights to Cologne

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Cologne, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Cologne, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Dulles Intl to Cologne (IAD-CGN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Cologne 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 Cologne

KAYAK's recommended round-trip deals from the most popular airlines that fly from Dulles Intl to Cologne.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
5:50 pm - 8:30 pmIAD-CGN
20h 40m1 stop
American Airlines Logo
3:30 pm - 3:55 pmCGN-IAD
30h 25m1 stop
$571American Airlines
Find Deal
Mon, Jul 28 - Tue, Aug 12
American Airlines Logo
7:25 pm - 1:35 pmIAD-CGN
12h 10m1 stop
American Airlines Logo
10:50 am - 5:35 pmCGN-IAD
12h 45m1 stop
$646American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
Air Canada Logo
5:31 pm - 5:05 pmIAD-CGN
17h 34m2 stops
Air Canada Logo
6:35 pm - 9:01 pmCGN-IAD
32h 26m2 stops
$661Air Canada
Find Deal
Mon, Jul 28 - Tue, Aug 12
Air Canada Logo
1:00 pm - 11:10 amIAD-CGN
16h 10m2 stops
Air Canada Logo
1:35 pm - 9:38 amCGN-IAD
26h 03m2 stops
$668Air Canada
Find Deal
Wed, Sep 3 - Thu, Sep 18
British Airways Logo
10:40 pm - 8:30 pmIAD-CGN
15h 50m1 stop
British Airways Logo
9:15 pm - 6:52 pmCGN-IAD
27h 37m2 stops
$673British Airways
Find Deal
Mon, Jul 28 - Tue, Aug 12
British Airways Logo
7:25 pm - 2:20 pmIAD-CGN
12h 55m1 stop
British Airways Logo
9:15 pm - 3:55 pmCGN-IAD
24h 40m1 stop
$691British Airways
Find Deal
Mon, Jul 28 - Tue, Aug 12
Lufthansa Logo
11:20 pm - 3:30 pmIAD-CGN
11h 10m1 stop
Lufthansa Logo
5:05 am - 3:50 pmCGN-IAD
15h 45m2 stops
$714Lufthansa
Find Deal
Sun, Oct 26 - Sun, Nov 2
United Airlines Logo
11:05 pm - 5:10 pmIAD-CGN
13h 05m2 stops
United Airlines Logo
9:10 am - 8:15 pmCGN-IAD
17h 05m2 stops
$749United Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2
United Airlines Logo
5:10 pm - 12:15 pmIAD-CGN
13h 05m2 stops
United Airlines Logo
12:55 pm - 7:25 pmCGN-IAD
12h 30m1 stop
$785United Airlines
Find Deal
Tue, Jul 29 - Tue, Aug 12
Lufthansa Logo
6:35 pm - 3:50 pmIAD-CGN
15h 15m2 stops
Lufthansa Logo
12:55 pm - 7:25 pmCGN-IAD
12h 30m1 stop
$849Lufthansa
Find Deal
Fri, Aug 29 - Sat, Sep 6
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KAYAK's insights & trends for Dulles Intl to Cologne flights

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

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

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 Cologne, 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 Cologne is December, where tickets cost $596 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $1,366 and $879 respectively.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$408
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Washington Dulles Airport to Cologne

When to book flights from Dulles Intl to Cologne

Are your dates flexible? Find out the best times to travel from Dulles Intl to Cologne 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 Cologne flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Cologne was $408 for a one-way ticket and $571 for a round-trip.

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

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

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

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

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

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

  • Which is the best airline for flights from Washington, D.C. to Cologne, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Cologne are United Airlines and Lufthansa. With an average price for the route of $1,366 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $781 and an overall rating of 6.7.

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

    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 Cologne.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cologne 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 Cologne?

    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 Cologne with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and CGN 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 Cologne?

    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 Cologne from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Dulles Intl to Cologne

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Cologne. 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 Cologne? 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
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

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.

2.0 MediocreAnonymous, Apr 2025IAD - FRA
Read more United Airlines reviews

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.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

We paid extra for the seats with extra leg room. But we were not allocated the seats with extra leg room nor refunded the money we paid for the seats.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Liked nothing. As per previous segment it was delay delay delay.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

Food is terrible. Flight is outdated and seats are not comfy.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

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!!!

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.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

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

LCY airport is an amazing airport and I love the flight from LCY to FRA with BA. Efficient, easy, comfortable and great luggage allownace with BA. I iused to fly predominantley LH, but the service and price - benefit ratio of Lufthansa has deteriorated a lot over the last 5 years. Whereas BA keeps an excellent service level with friendly staff.

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.

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

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