IAD - CGN

$330 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 9/22. 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

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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Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Cologne

Mon, Oct 13 - Mon, Oct 20
Multiple Airlines Logo
2:25 pm - 11:40 pmIAD-CGN
27h 15m2 stops
Multiple Airlines Logo
6:05 pm - 9:05 pmCGN-IAD
33h 00m3 stops
$592Multiple Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 12
Turkish Airlines Logo
2:30 pm - 5:15 pmIAD-CGN
21h 45m1 stop
Turkish Airlines Logo
11:35 am - 11:45 amCGN-IAD
30h 10m1 stop
$608Turkish Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2
British Airways Logo
7:20 pm - 4:30 pmIAD-CGN
16h 10m1 stop
British Airways Logo
4:35 pm - 3:35 pmCGN-IAD
29h 00m1 stop
$667British Airways
Find Deal
Wed, Nov 19 - Tue, Nov 25
Air Canada Logo
4:25 pm - 10:25 pmIAD-CGN
24h 00m2 stops
Air Canada Logo
6:45 am - 8:54 pmCGN-IAD
20h 09m2 stops
$700Air Canada
Find Deal
Thu, Oct 30 - Thu, Nov 6
British Airways Logo
2:18 pm - 3:40 pmIAD-CGN
20h 22m2 stops
British Airways Logo
5:05 pm - 3:35 pmCGN-IAD
28h 30m1 stop
$710British Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
11:55 pm - 5:15 pmIAD-CGN
12h 20m1 stop
United Airlines Logo
1:35 pm - 11:59 pmCGN-IAD
16h 24m2 stops
$723United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 12
Lufthansa Logo
6:25 pm - 12:50 pmIAD-CGN
13h 25m2 stops
Lufthansa Logo
1:20 pm - 8:05 pmCGN-IAD
12h 45m1 stop
$744Lufthansa
Find Deal
Wed, Oct 29 - Wed, Nov 12
Lufthansa Logo
10:23 pm - 12:35 pmIAD-CGN
33h 12m2 stops
Lufthansa Logo
1:20 pm - 8:05 pmCGN-IAD
12h 45m1 stop
$746Lufthansa
Find Deal
Mon, Oct 13 - Mon, Oct 20
United Airlines Logo
5:40 pm - 12:15 pmIAD-CGN
12h 35m1 stop
United Airlines Logo
12:55 pm - 12:21 amCGN-IAD
17h 26m2 stops
$778United Airlines
Find Deal
Tue, Dec 23 - Sun, Jan 4
Air Canada Logo
5:16 pm - 12:10 pmIAD-CGN
36h 54m2 stops
Air Canada Logo
1:40 pm - 4:24 pmCGN-IAD
56h 44m2 stops
$1,113Air Canada
Find Deal

Everything you should know

Top airlines
Turkish Airlines
Cheapest • from $608 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 16% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$592
Overall average: $661
Multiple Airlines
Mon 10/13Mon 10/20
IAD - CGN • 2 stops
Cheapest one-way
$330
Multiple Airlines
Mon 9/22
IAD - CGN • 3 stops
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 Cologne!
Booking Insights

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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Cologne?

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 September, where tickets cost $640 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $938 and $879 respectively.

Good to know

Low seasonJanuary
Cheapest flight$330
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 6% increase in price.
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 $330 for a one-way ticket and $592 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 $1,249 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 $839 and an overall rating of 6.8.

  • 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.

Reviews of the 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 8929 reviews
7.7Boarding
8.1Crew
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

8.0 ExcellentAnonymous, Sep 2025PHL - FRA
Read more United Airlines reviews

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

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

Flight was delayed and missed my connection Lufthansa didn’t respond.

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I liked Quiet people around me. Crew could have helped people with overhead luggage so they aren't moving other peoples bags around and causing problems for people that had there bags there first

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

The plane was delayed by two hours in Chicago which led to us missing the next flight. Lufthansa rebooked the flight and booked us a hotel for the night in Frankfurt. The level of customer service and getting us taken care of was superb. The flight crew and the service on the ground was superb.

Stop charging for alcohol overseas flights and start taking cash again not everyone wants to pay with card if the person is bigger give him seat on the outside seats not the middle in between the people is common sense and mainly if you fly for Lufthansa provides the sam service and experience...

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Booked Economy but it translated to economy light for Lufthansa so now we are stuck paying an extra $75 per person both ways for our checked bags. If I had known that, I would have never booked these tickets because it came out to be more than other options. The booking in the kayak side clearly says Economy and has a link to the inormation for Lufthansa which states Economy included a checked bag. Super annoyed about that.

Food is too little (in volume) and too spicy.. There are no snacks in the back of the plane in between meals.

The seat I was stuck in was so unimaginably uncomfortable. I have never had that tight of a seat in my 20 years of flying. Even budget airlines give you more space.

We were upgraded to economy plus and everything was awesome!

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

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

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