$350 Cheap Flights from Washington (IAD) to Colombo (CMB)

View $350 flight on Tue, Apr 14, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Bandaranaike Intl. Airport (CMB)

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Cheap Flights from Washington to Colombo (IAD-CMB)

Prices were available within the past 7 days and start at $350 for one-way flights and $819 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Fri, Apr 24 - Wed, May 6
IAD
Washington
CMB
Colombo
$819 Roundtrip, found 15 hours ago
$819
Roundtrip
found 15 hours ago
Select Etihad Airways flight, departing Fri, Apr 24 from Washington to Colombo, returning Wed, May 6, priced at $819 found 15 hours ago
Etihad Airways
Thu, Apr 16 - Fri, May 1
IAD
Washington
CMB
Colombo
$836 Roundtrip, found 13 hours ago
$836
Roundtrip
found 13 hours ago
Select Etihad Airways flight, departing Thu, Apr 16 from Washington to Colombo, returning Fri, May 1, priced at $836 found 13 hours ago
Etihad Airways
Sun, Apr 19 - Sat, May 2
IAD
Washington
CMB
Colombo
$847 Roundtrip, found 2 days ago
$847
Roundtrip
found 2 days ago
Select Etihad Airways flight, departing Sun, Apr 19 from Washington to Colombo, returning Sat, May 2, priced at $847 found 2 days ago
Etihad Airways
Sat, May 2 - Fri, May 29
IAD
Washington
CMB
Colombo
$853 Roundtrip, just found
$853
Roundtrip
just found
Select Etihad Airways flight, departing Sat, May 2 from Washington to Colombo, returning Fri, May 29, priced at $853 just found
Turkish Airlines
Wed, Jan 13 - Tue, Feb 23
IAD
Washington
CMB
Colombo
$953 Roundtrip, found 15 hours ago
$953
Roundtrip
found 15 hours ago
Select Turkish Airlines flight, departing Wed, Jan 13 from Washington to Colombo, returning Tue, Feb 23, priced at $953 found 15 hours ago
Qatar Airways
Sun, Apr 26 - Thu, May 14
IAD
Washington
CMB
Colombo
$1,006 Roundtrip, found 1 hour ago
$1,006
Roundtrip
found 1 hour ago
Select Qatar Airways flight, departing Sun, Apr 26 from Washington to Colombo, returning Thu, May 14, priced at $1,006 found 1 hour ago
American Airlines
Sun, Apr 19 - Tue, Apr 28
IAD
Washington
CMB
Colombo
$1,006 Roundtrip, found 20 hours ago
$1,006
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sun, Apr 19 from Washington to Colombo, returning Tue, Apr 28, priced at $1,006 found 20 hours ago
Alaska Airlines
Fri, Nov 13 - Fri, Jan 15
IAD
Washington
CMB
Colombo
$1,122 Roundtrip, found 18 hours ago
$1,122
Roundtrip
found 18 hours ago
Select Alaska Airlines flight, departing Fri, Nov 13 from Washington to Colombo, returning Fri, Jan 15, priced at $1,122 found 18 hours ago
Air Canada
Sat, May 23 - Fri, Jun 5
IAD
Washington
CMB
Colombo
$1,228 Roundtrip, found 2 days ago
$1,228
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, May 23 from Washington to Colombo, returning Fri, Jun 5, priced at $1,228 found 2 days ago
Swiss International Air Lines
Tue, Apr 28 - Thu, May 14
IAD
Washington
CMB
Colombo
$1,295 Roundtrip, found 1 day ago
$1,295
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, Apr 28 from Washington to Colombo, returning Thu, May 14, priced at $1,295 found 1 day ago

Alternative airports near Colombo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bandaranaike Intl. CMB. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $1,107
CMB
Bandaranaike Intl.
Cheapest
Average driving time to city center28 min
Flights from $1,107

Find the cheapest month to fly from Washington (IAD) to Colombo (CMB)

September is typically the cheapest month to fly

From $799 - $1,388 per traveler.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) cost?
You can find cheap one-way flights from $350 and cheap return flights from $819 Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) with Expedia. One-way flights generally range between $512 and $8343, and roundtrip flights usually range from $1282 to $7973. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
The cheapest month to fly from IAD to CMB is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
Enter IAD to CMB and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
Gulf Air is one of the cheapest airlines offering connecting flights from Washington Dulles Intl. (IAD) to Bandaranaike Intl. (CMB), with round-trip tickets starting from around $1,689 with a layover in Abu Dhabi Intl. (AUH). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
The earliest flight from Washington Dulles International Airport (IAD) to Bandaranaike International Airport (CMB) usually departs at around 5:00 AM, operated by American Airlines and Etihad Airways. This is a seasonal service active in April, making it a great option for early risers looking to make the most of their time in Colombo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
The most popular departure times for flights from Washington Dulles (IAD) to Colombo (CMB) are in the late evening, from 9pm to midnight. About 26% of passengers prefer this time window. Many major carriers, including Etihad Airways, British Airways, and Qatar Airways, offer flights during this window. This timing is favored because it allows you to maximize your day in Washington before your overnight flight.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
A flight from IAD to CMB with a layover takes around 19 hours 20 minutes, with the route covering approximately 8,935 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
Business class is available on flights from IAD to CMB. Airlines that offer business class service on this route include:

  • Qatar Airways
  • Etihad Airways
  • Turkish Airlines
  • Emirates
  • United Airlines
  • Aer Lingus
  • British Airways
  • Lufthansa
  • American Airlines
  • Air Canada

First class is available with Emirates and Swiss International Air Lines.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Colombo from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into Bandaranaike Intl. (CMB) to reach Colombo. Some flights may connect through major hubs like Heathrow (LHR), Pearson Intl. (YYZ), Dubai Intl. (DXB) before reaching Colombo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Colombo (CMB-Bandaranaike Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Bandaranaike Intl.
Airlines serving
Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Cathay Pacific, Emirates, Etihad Airways, Gulf Air, JetBlue Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$818
Distance
8933 mi

Book with confidence

Washington to Colombo Flights

The cheapest times to fly from Washington to Colombo

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 Washington to Colombo are during the month of April. You can find some of the cheapest flights from Washington to Colombo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Colombo

Sunday is one of the best days to book for cheap flights from Washington to Colombo: 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 Washington to Colombo

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 Washington to Colombo in 2026. You can also book with separate airlines for your outbound and return journeys, from $350 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 Washington to Colombo 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 Washington to Colombo 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.

 

Washington to Colombo Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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