IAD - CGN

$354 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 9/16. 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 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$765
Typical prices: $640-$608
Turkish Airlines
Wed 9/9Fri 9/18
IAD - CGN • 1 stop
Cheapest one-way
$354
Multiple Airlines
Wed 9/16
IAD - CGN • 2 stops
Top airlines
Cheapest • from $765 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Cologne. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $683 (round-trip)
Shortest trip • 10h 05m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
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

Wed, Sep 9 - Fri, Sep 18
Turkish Airlines Logo
9:45 pm - 6:10 pm
IAD
-
CGN
14h 25m
1 stop
Turkish Airlines Logo
10:25 am - 7:50 pm
CGN
-
IAD
15h 25m
1 stop
$765Turkish Airlines
Fri, Oct 2 - Wed, Oct 7
Turkish Airlines Logo
9:45 pm - 6:10 pm
IAD
-
CGN
14h 25m
1 stop
Turkish Airlines Logo
10:25 am - 7:50 pm
CGN
-
IAD
15h 25m
1 stop
$826Turkish Airlines
Wed, May 13 - Mon, May 18
Multiple Airlines Logo
5:25 pm - 8:50 am
IAD
-
CGN
33h 25m
1 stop
Multiple Airlines Logo
6:20 am - 8:29 pm
CGN
-
IAD
20h 09m
2 stops
$862Multiple Airlines
Wed, May 13 - Mon, May 18
Multiple Airlines Logo
5:25 pm - 8:50 am
IAD
-
CGN
33h 25m
1 stop
Multiple Airlines Logo
8:30 am - 7:25 pm
CGN
-
IAD
16h 55m
1 stop
$864Multiple Airlines
Tue, May 12 - Mon, May 18
Multiple Airlines Logo
10:20 pm - 7:45 am
IAD
-
CGN
27h 25m
1 stop
Multiple Airlines Logo
6:20 am - 8:29 pm
CGN
-
IAD
20h 09m
2 stops
$866Multiple Airlines
Tue, May 12 - Mon, May 18
Lufthansa Logo
10:20 pm - 7:45 am
IAD
-
CGN
27h 25m
1 stop
Lufthansa Logo
8:30 am - 7:25 pm
CGN
-
IAD
16h 55m
1 stop
$873Lufthansa
Mon, May 11 - Sun, May 17
Austrian Airlines Logo
5:25 pm - 7:55 pm
IAD
-
CGN
20h 30m
1 stop
Austrian Airlines Logo
8:50 pm - 2:35 pm
CGN
-
IAD
23h 45m
1 stop
$878Austrian Airlines
Sat, Aug 29 - Mon, Sep 7
Turkish Airlines Logo
9:45 pm - 1:50 pm
IAD
-
CGN
34h 05m
1 stop
Turkish Airlines Logo
10:25 am - 11:35 am
CGN
-
IAD
31h 10m
1 stop
$881Turkish Airlines
Thu, May 14 - Tue, May 26
Lufthansa Logo
10:20 pm - 7:30 pm
IAD
-
CGN
15h 10m
1 stop
Lufthansa Logo
1:05 pm - 7:25 pm
CGN
-
IAD
12h 20m
1 stop
$886Lufthansa
Wed, May 20 - Mon, May 25
Multiple Airlines Logo
9:55 am - 5:05 pm
IAD
-
CGN
25h 10m
2 stops
Multiple Airlines Logo
1:05 pm - 7:25 pm
CGN
-
IAD
12h 20m
1 stop
$890Multiple Airlines
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?

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 Cologne departing in September.

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 $0 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,080 and $902 respectively.

Good to know

Low seasonNovember
Cheapest flight$354
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 14% 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 $354 for a one-way ticket and $765 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 oneworld 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 $1,080 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 $841 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 9677 reviews
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
Airline reviews

Vegetarian selection could be better. Bread was too hard to chew.

8.0 ExcellentAnonymous, Apr 2026
IAD - FRA
Read more United Airlines reviews

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

1st class seats NOT REALLY 1st class or business class but like premier economy. Should be listed as such or named something else. I have flown 1st class with other airlines and they are nothing like it at all.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

Worst airline in the world. They downgraded me from business class to economy with no compensation.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Overall ok. Best part has always been the sundae dessert.

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

Even if you wait for connecting passengers you should not be an hour late departing waiting their luggage. Your passengers may have connections in the other end and you harm them.

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

Information on your arrival and departure airports