$815 Cheap Flights from Cotonou (COO) to Washington (IAD)

View $815 flight on Mon, Dec 8, 2025Opens in a new window

Popular airlines from Cotonou (COO-Cadjehoun) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Cotonou to Washington (COO-IAD)

Prices were available within the past 7 days and start at $815 for one-way flights and $1,165 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Brussels Airlines
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,165 Roundtrip, found 3 days ago
$1,165
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,165 found 3 days ago
Brussels Airlines
Mon, Jun 8 - Wed, Sep 2
COO
Cotonou
IAD
Washington
$1,168 Roundtrip, found 2 days ago
$1,168
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Mon, Jun 8 from Cotonou to Washington, returning Wed, Sep 2, priced at $1,168 found 2 days ago
Brussels Airlines
Mon, Jun 8 - Wed, Sep 2
COO
Cotonou
IAD
Washington
$1,177 Roundtrip, found 2 days ago
$1,177
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Mon, Jun 8 from Cotonou to Washington, returning Wed, Sep 2, priced at $1,177 found 2 days ago
Brussels Airlines
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,185 Roundtrip, found 3 days ago
$1,185
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,185 found 3 days ago
Ethiopian Airlines
Mon, Dec 8 - Wed, Dec 31
COO
Cotonou
IAD
Washington
$1,187 Roundtrip, found 1 hour ago
$1,187
Roundtrip
found 1 hour ago
Select Ethiopian Airlines flight, departing Mon, Dec 8 from Cotonou to Washington, returning Wed, Dec 31, priced at $1,187 found 1 hour ago
Brussels Airlines
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,199 Roundtrip, found 3 days ago
$1,199
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,199 found 3 days ago
Brussels Airlines
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,203 Roundtrip, found 3 days ago
$1,203
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,203 found 3 days ago
ASKY
Mon, Dec 1 - Wed, Dec 31
COO
Cotonou
IAD
Washington
$1,240 Roundtrip, found 1 day ago
$1,240
Roundtrip
found 1 day ago
Select ASKY flight, departing Mon, Dec 1 from Cotonou to Washington, returning Wed, Dec 31, priced at $1,240 found 1 day ago
Air Canada
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,245 Roundtrip, found 3 days ago
$1,245
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,245 found 3 days ago
Delta
Thu, Mar 19 - Thu, Apr 23
COO
Cotonou
IAD
Washington
$1,341 Roundtrip, found 3 days ago
$1,341
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Mar 19 from Cotonou to Washington, returning Thu, Apr 23, priced at $1,341 found 3 days ago

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Flights from Cotonou (COO) to Washington (IAD)
Origin airport
Cadjehoun
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Brussels Airlines, Ethiopian Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$1,165
Distance
5396 mi

Cotonou to Washington Flights

The cheapest times to fly from Cotonou to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Cotonou to Washington are during the month of March. You can find some of the cheapest flights from Cotonou to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cotonou to Washington

Sunday is one of the best days to book for cheap flights from Cotonou to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Cotonou to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Cotonou to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $815 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Cotonou to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Cotonou to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $815 or cheap return flight from $1,165 from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from COO to IAD is March, when demand is low. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest COO to IAD flight.
How many flights per day from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD)?
There aren't any daily nonstop flights from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from COO to IAD?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD)?
To touch down at Washington Dulles Intl. Airport (IAD) on schedule, choose a flight that leaves from Cadjehoun Airport (COO) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from COO to IAD right before your trip is typically more expensive. But if you're flexible with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a COO to IAD flight and hotel package?
You'll generally save money by securing a COO to IAD flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Cadjehoun Airport (COO) to Washington Dulles Intl. Airport (IAD)?
It's usually possible to cancel or reschedule your COO to IAD flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.