The cheapest times to fly from CMB to IAD are

  • January 15th to March 11th
  • April 9th to June 10th
  • October 1st to December 2nd

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from CMB to IAD is mid May. Prices can be as high as $1769 for Friday flights during early January, or as low as $948 for Monday flights around mid May.


When to Fly to Washington

Flying from Colombo (CMB) to Washington, DC (IAD) will usually cost between $984 to $1412 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid May with an average ticket price of $1005. Due to high demand the most expensive time to fly is early January, with an average price of $1511. Planning your trip to low-cost times can easily save you $506 on economy flights and even more on first-class flights. Generally, any price below $1126 can be considered a good price for a round-trip CMB to IAD flight.

See below for a graph of average weekly prices for the CMB to IAD route. All prices are for round-trip tickets in USD.

CMB to IAD Flight Prices

Compared to other flights, the CMB to IAD flight is slightly more expensive than the average and costs less than the average flight leaving from Colombo. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to IAD, and Wednesday the cheapest day to fly back into CMB. Fridays are the most expensive days to fly to Washington, and Saturdays are the most expensive days to return to Colombo. Selecting flights on the least expensive days could save you up to $102 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1107. Return trip prices are from the IAD to CMB flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from CMB to IAD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 17 hour 4 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from CMB to IAD while comparing.

Destination alternative #1: Philadelphia International Airport (PHL) in Philadelphia, PA

  • 135 miles (217 km) away from IAD
  • Usually 3.69% less expensive than IAD
  • 1-layover flights available

See CMB to PHL flights


Flight Hacking CMB to IAD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from CMB to IAD — but Champion Traveler does!

Hack #1: Amsterdam (CMB > AMS > IAD)

  • Price for both tickets: $1021
  • Average savings: $105 (9.33%)

See CMB to JFK flights

Hack #2: New York, NY (CMB > JFK > IAD)

  • Price for both tickets: $1061
  • Average savings: $65 (5.77%)

See CMB to AMS flights

Hack #3: Hong Kong (CMB > HKG > IAD)

  • Price for both tickets: $1066
  • Average savings: $61 (5.37%)

See CMB to HKG flights


Flight Questions Answered

Still have questions about flying from CMB to IAD? We’ve got answers.

Which airlines fly this route?

You can find 35 major airlines flying this route most often: Aer Lingus, Aeroflot, Air Canada, Air China, Air France, Air India, Alitalia, American, ANA, Austrian, British Airways, Brussels Airlines, Cathay Dragon, Cathay Pacific, China Eastern, China Southern, Delta, Emirates, Etihad, Finnair, Gulf Air, Iberia, JAL, KLM, Korean Air, Lufthansa, Qatar Airways, Royal Air Maroc, Saudia, Singapore Airlines, SriLankan, SWISS, Tap Air Portugal, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Washington Dulles International Airport to Bandaranaike International Colombo Airport?

The distance between the two airports is roughly 8933 miles or 14376 kilometers.

How long does it take to fly from CMB to IAD?

The real-world flight time for a nonstop CMB to IAD flight is about 17 hour 4 minutes.

How many flights go between Colombo and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 45 available flights from CMB to IAD.


Airport Location Info


Departing Airport

Origination code CMB
Origination airport name Bandaranaike International Colombo Airport
City Colombo
Country Sri Lanka
Latitude 7.2
Longitude 79.9

Return Airport

Destination code IAD
Destination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.