IAD - CGN

$317 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 8/18. 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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Flights 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

Wed, Sep 3 - Tue, Sep 23
British Airways Logo
2:21 pm - 9:00 pmIAD-CGN
24h 39m2 stops
British Airways Logo
9:15 pm - 3:00 pmCGN-IAD
23h 45m2 stops
$565British Airways
Find Deal
Wed, Sep 3 - Tue, Sep 23
British Airways Logo
7:21 pm - 9:00 pmIAD-CGN
19h 39m2 stops
British Airways Logo
9:15 pm - 3:00 pmCGN-IAD
23h 45m2 stops
$567British Airways
Find Deal
Tue, Sep 30 - Tue, Oct 7
Turkish Airlines Logo
9:40 pm - 6:10 pmIAD-CGN
14h 30m1 stop
Turkish Airlines Logo
2:50 pm - 7:45 pmCGN-IAD
34h 55m1 stop
$611Turkish Airlines
Find Deal
Wed, Sep 3 - Thu, Sep 18
Turkish Airlines Logo
1:30 pm - 1:50 pmIAD-CGN
18h 20m1 stop
Turkish Airlines Logo
7:10 pm - 11:45 amCGN-IAD
22h 35m1 stop
$619Turkish Airlines
Find Deal
Wed, Oct 8 - Tue, Oct 14
 Logo
9:45 am - 5:05 pmIAD-CGN
25h 20m2 stops
 Logo
8:05 pm - 7:25 pmCGN-IAD
29h 20m1 stop
Wed, Oct 8 - Tue, Oct 14
 Logo
10:20 pm - 5:10 pmIAD-CGN
12h 50m1 stop
 Logo
8:25 pm - 2:35 pmCGN-IAD
24h 10m1 stop
Wed, Sep 3 - Thu, Sep 18
United Airlines Logo
5:16 pm - 12:10 pmIAD-CGN
12h 54m2 stops
United Airlines Logo
6:05 am - 3:05 pmCGN-IAD
15h 00m1 stop
$638United Airlines
Find Deal
Wed, Sep 3 - Thu, Sep 18
United Airlines Logo
5:16 pm - 12:10 pmIAD-CGN
12h 54m2 stops
United Airlines Logo
12:55 pm - 7:25 pmCGN-IAD
12h 30m1 stop
$639United Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2
Lufthansa Logo
11:55 pm - 5:10 pmIAD-CGN
12h 15m1 stop
Lufthansa Logo
1:15 pm - 8:05 pmCGN-IAD
12h 50m1 stop
$653Lufthansa
Find Deal
Wed, Oct 1 - Fri, Oct 10
Lufthansa Logo
10:20 pm - 3:50 pmIAD-CGN
11h 30m1 stop
Lufthansa Logo
12:55 pm - 7:25 pmCGN-IAD
12h 30m1 stop
$663Lufthansa
Find Deal
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.

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 January, where tickets cost $678 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $1,014 and $879 respectively.

Good to know

Low seasonJanuary
Cheapest flight$317
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 1% 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 $317 for a one-way ticket and $565 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?

    Star Alliance, and oneworld 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 $1,261 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 $796 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 8896 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

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

8.0 ExcellentHal, Jul 2025IAD - MSY
Read more United Airlines reviews

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.

A little bit more leg room in premium economy. I am 6’4”.

online check in was not available so i had to get to airport extra early. The flight was delayed and my luggage was lost. I had an argument with the person behind me who wanted to keep her bag on the floor and not allow my seat to recline on a 9hr plus flight. So overall, lots and lots of areas for improvement.

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

The flight was operated by Lufthansa. You can't expect much from them anymore. They have a talent in getting something wrong.

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 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.

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Hate their old flights, boatding, food and services. Very poor quality

The food could be better, more snacks. And have some plugs to chargue the phone.

The pasta in the evening meal was tasteless. Otherwise, the flight was okay.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Flight was a little late. The crew was courteous, food ok

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

We had almost a 6 hr delay, primarily due to weather, the e problem was that they communicated this delay and its length very poorly. The boarding was chaotic - even though they had hours to figure it out! The plane was an old 747 whose touch screens barely worked and there was a faulty USB port under my seat rest (something that wasn't labeled as being there) They organized my delayed luggage well. And I could get updates on the Lufthansa website. My shirt connecting flight charged for everything except water. Coffee was over 3€

Flight was great only departure was delayed to saome ground crew issues

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

Old tired plane, Uncomfortable business class seat. Breakfast dreadful and meagre. At least flight was on time!

Safe arrival. Improvement on Time efficiency Effective Communication will be great.

The crew is very friendly and helpful. The food is good for airplane food. The flight is long and hard to sleep. The leg space is great. The plane arrived in plenty of time.

A good flight back to Tampa and thankfully although we had a 90 minute delay because of thunder storms from Charlotte to bottom iof Florida, it was a prudent to avoid these for a comfortable flight as opposed to being tossed around with turbulence.

They removed our booking without telling us. Cost us thousands to book last minute

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

The international flight from PHL to Lisbon was one of the worst I’ve experienced, ever. What was really disappointing was the entire experience of comfort and service in the coach cabin after takeoff. The food was inedible and the wine served with dinner was such low quality - it tasted of petrol. I couldn’t eat more than a bite or two of the chicken entree, being worried it would make me ill. The service took so long to reach the entire coach cabin, I ended up having the lights turned off on me as though I had to rush though dinner (though as I mentioned, it wasn’t as if I ate much - only the salad). Most of the attendants seemed generally annoyed and were not friendly or polite. While there was some turbulence, it wasn’t too uncomfortable and I know that is just a chance. The temperature of the cabin was so warm, even a friend a row or two up and on the other side of the plane felt like this. To top it all off, the seat was so uncomfortable and flattened/overused, I had back pains for DAYS afterward.

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

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

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