In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular airlines that fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport are Etihad Airways, Qatar Airways and American Airlines. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from CMB to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport as you normally would.

Most accurate provider : When it comes to deals on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Colombo to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Colombo to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Colombo to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colombo to Dulles Intl.

Can I find deals for business class flights from Colombo to Dulles Intl?

Yes. Cheapflights offers flight deals from Colombo to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$609+ Flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport

Q: How much does it cost to fly round-trip from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment. Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport flights typically cost between $1,243 and $1,717 in March. The cheapest round-trip price found within the last 3 days was $1,007 on Etihad Airways (Mar 20-May 8).

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Colombo to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Colombo to Dulles Intl

Cheapest flights from Colombo to Dulles Intl
Explore the most affordable flight options available from Colombo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Fri 12/263:25 amCMB - IAD

1 stop23h 00mMultiple Airlines

Thu 1/11:30 pmIAD - CMB

1 stop30h 10mMultiple Airlines

Deal found 12/11

$1,431

Sun 12/2810:15 pmCMB - IAD

2 stops31h 35mMultiple Airlines

Thu 1/11:30 pmIAD - CMB

1 stop30h 10mMultiple Airlines

Deal found 12/11

$1,575

Fri 12/124:15 amCMB - IAD

1 stop22h 10mQatar Airways

Tue 12/238:05 pmIAD - CMB

1 stop26h 10mQatar Airways

Deal found 12/11

$1,643

Fri 12/122:40 amCMB - IAD

2 stops48h 30mMultiple Airlines

Tue 12/2310:08 pmIAD - CMB

2 stops51h 52mMultiple Airlines

Deal found 12/11

$1,691

Sat 12/1312:25 amCMB - IAD

2 stops31h 25mMultiple Airlines

Tue 12/234:30 pmIAD - CMB

2 stops26h 00mMultiple Airlines

Deal found 12/11

$1,723

Sun 12/289:35 pmCMB - IAD

1 stop22h 00mEtihad Airways

Thu 1/12:35 pmIAD - CMB

1 stop19h 15mEtihad Airways

Deal found 12/11

$1,808

Best flights from Colombo to Dulles Intl
Discover carefully curated flight deals from Colombo to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Fri 3/204:30 pmCMB - IAD

1 stop27h 05mEtihad Airways

Fri 5/83:35 pmIAD - CMB

1 stop31h 25mEtihad Airways

Deal found 12/10

$1,007

Fri 2/2011:15 amCMB - IAD

1 stop39h 10mQatar Airways

Fri 3/2011:40 amIAD - CMB

1 stop28h 45mQatar Airways

Deal found 12/10

$1,024

Wed 3/189:35 pmCMB - IAD

1 stop22h 00mMultiple Airlines

Wed 5/2710:51 amIAD - CMB

2 stops24h 19mMultiple Airlines

Deal found 12/11

$1,089

Thu 1/299:50 amCMB - IAD

1 stop33h 45mEtihad Airways

Sun 2/12:35 pmIAD - CMB

1 stop19h 15mEtihad Airways

Deal found 12/10

$1,067

Wed 1/142:00 pmCMB - IAD

2 stops36h 20mMultiple Airlines

Sun 4/58:45 pmIAD - CMB

2 stops22h 40mMultiple Airlines

Deal found 12/11

$1,089

Tue 3/179:35 pmCMB - IAD

1 stop22h 00mMultiple Airlines

Wed 5/2710:51 amIAD - CMB

2 stops24h 19mMultiple Airlines

Deal found 12/11

$1,089

Fri 3/274:30 pmCMB - IAD

1 stop27h 05mMultiple Airlines

Wed 5/2710:51 amIAD - CMB

2 stops24h 19mMultiple Airlines

Deal found 12/11

$1,089

Last-minute flights from Colombo to Dulles Intl
Discover last-minute flight deals from Colombo to Dulles Intl. Data last updated December 12, 2025 and is based on user searches.

Fri 12/263:25 amCMB - IAD

1 stop23h 00mMultiple Airlines

Thu 1/11:30 pmIAD - CMB

1 stop30h 10mMultiple Airlines

Deal found 12/11

$1,431

Sun 12/2810:15 pmCMB - IAD

2 stops31h 35mMultiple Airlines

Thu 1/11:30 pmIAD - CMB

1 stop30h 10mMultiple Airlines

Deal found 12/11

$1,575

Wed 1/142:00 pmCMB - IAD

2 stops36h 20mMultiple Airlines

Sun 4/58:45 pmIAD - CMB

2 stops22h 40mMultiple Airlines

Deal found 12/11

$1,089

Wed 1/149:35 pmCMB - IAD

1 stop22h 00mEtihad Airways

Sun 4/53:35 pmIAD - CMB

1 stop19h 35mEtihad Airways

Deal found 12/11

$1,407

Thu 1/299:50 amCMB - IAD

1 stop33h 45mEtihad Airways

Sun 2/12:35 pmIAD - CMB

1 stop19h 15mEtihad Airways

Deal found 12/10

$1,067

Thu 1/2912:50 pmCMB - IAD

2 stops42h 34mAir Canada

Sun 2/110:06 pmIAD - CMB

2 stops51h 54mAir Canada

Deal found 12/11

$1,221

One-way flights from Colombo to Dulles Intl
Search for one-way flight options from Colombo to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Thu 1/223:00 amCMB - IAD

2 stops40h 35mMultiple Airlines

Deal found 12/10

$609

Sat 2/146:35 pmCMB - IAD

2 stops49h 00mMultiple Airlines

Deal found 12/10

$636

Sat 2/144:30 pmCMB - IAD

1 stop27h 05mEtihad Airways

Deal found 12/10

$652

Fri 1/234:30 pmCMB - IAD

1 stop27h 05mEtihad Airways

Deal found 12/10

$653

Fri 2/134:15 amCMB - IAD

1 stop22h 10mQatar Airways

Deal found 12/10

$654

Sat 1/241:20 pmCMB - IAD

2 stops38h 35mMultiple Airlines

Deal found 12/10

$685

Fri 2/2010:15 pmCMB - IAD

2 stops31h 35mIndiGo

Deal found 12/10

$704

Sat 2/1410:15 pmCMB - IAD

2 stops31h 35mIndiGo

Deal found 12/10

$747

Fri 2/204:55 pmCMB - IAD

3 stops50h 40mGulf Air

Deal found 12/10

$944

Sat 1/249:50 amCMB - IAD

1 stop33h 45mEtihad Airways

Deal found 12/10

$1,021

Find flight deals from Colombo to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,007 (Etihad Airways)
One-way from	$609 (Kiwi.com)
Popular in	August
Cheapest in	February
Average price	$1,476

Provider with most accurate pricing for Colombo Bandaranaike Intl-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Colombo Bandaranaike Intl-Washington, D.C. Dulles Intl flights.

Search Deals

From Colombo Bandaranaike Intl to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Colombo Bandaranaike Intl to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($80 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 3/20

4:30 pm-10:05 am

1 stop27h 05m

Washington, D.C. Dulles Intl

Fri 5/8

3:35 pm-8:30 am

1 stop31h 25m

$1,007

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 2/20

11:15 am-3:55 pm

1 stop39h 10m

Washington, D.C. Dulles Intl

Fri 3/20

11:40 am-1:55 am

1 stop28h 45m

$1,024

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 1/29

9:50 am-9:05 am

1 stop33h 45m

Washington, D.C. Dulles Intl

Sun 2/1

2:35 pm-8:20 pm

1 stop19h 15m

$1,067

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 3/18

9:35 pm-10:05 am

1 stop22h 00m

Washington, D.C. Dulles Intl

Wed 5/27

10:51 am-8:40 pm

2 stops24h 19m

$1,089

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 1/14

2:00 pm-3:50 pm

2 stops36h 20m

Washington, D.C. Dulles Intl

Sun 4/5

8:45 pm-4:55 am

2 stops22h 40m

$1,089

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 3/17

9:35 pm-10:05 am

1 stop22h 00m

Washington, D.C. Dulles Intl

Wed 5/27

10:51 am-8:40 pm

2 stops24h 19m

$1,089

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 3/27

4:30 pm-10:05 am

1 stop27h 05m

Washington, D.C. Dulles Intl

Wed 5/27

10:51 am-8:40 pm

2 stops24h 19m

$1,089

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 1/22

3:00 am-9:05 am

2 stops40h 35m

$609

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 2/14

6:35 pm-9:05 am

2 stops49h 00m

$636

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 2/14

4:30 pm-9:05 am

1 stop27h 05m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 17 results

Compare providers for flights from Colombo to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colombo to Dulles Intl in December.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Colombo to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Colombo with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport

How much does it cost to fly round-trip from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport, such as Qatar Airways, Etihad Airways, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Qatar Airways

7.4

Good

3,677 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

Qatar Airways

7.4

Good

3,677 reviews

Qatar Airways

7.4

Good

3,677 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

Etihad Airways

7.4

Good

1,331 reviews

Qatar Airways

7.4

Good

3,677 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

American Airlines

7.2

Good

11,049 reviews

Qatar Airways

7.4

Good

3,677 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

Can improve a lot from food to crew training to entertainment etc.

Related info for your journey

How long is the flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?
Airlines like Etihad Airways and Qatar Airways fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in about 27h 05m. The time it takes to get you to your destination can typically vary by up to 12h 05m. The distance between Colombo Bandaranaike Intl Airport and Washington, D.C. Dulles Intl Airport is about 8928 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport round-trip?
Qatar Airways, at $929, was found to be the cheapest airline from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Etihad Airways and American Airlines. Qatar Airways is priced at 29% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Colombo to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Colombo to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colombo to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colombo to Dulles Intl.
Can I find deals for business class flights from Colombo to Dulles Intl?
Yes. Cheapflights offers flight deals from Colombo to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Alexandria

Woodbridge

Tysons

Arlington

Owings Mills

Springfield

Hanover

Silver Spring

Fredericksburg

Fairfax

Linthicum Heights

Manassas

Rockville

Laurel

Towson

National Harbor

Bowie

Largo

McLean

Clinton

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Colombo to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Qatar Airways	Cheapest$929	Average$1,386	FlexibilityNo cancel fee	On-time68%
Etihad Airways	Cheapest$952	Average$1,250	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$1,267	Average$1,357	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$609+ Cheap flights from Bandaranaike Intl (CMB) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colombo to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colombo to Dulles Intl

Cheapest flights from Colombo to Dulles IntlExplore the most affordable flight options available from Colombo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Colombo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Colombo to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from Colombo to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colombo to Dulles Intl in December.

Best time to book a flight from Colombo to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Colombo with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport

How much does it cost to fly round-trip from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from Colombo to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport round-trip?

Can I find deals for flights from Colombo to Dulles Intl that include hotel bookings?

How can I find direct flights from Colombo to Dulles Intl?

Can I find deals for business class flights from Colombo to Dulles Intl?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colombo to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Colombo to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colombo to Dulles Intl
Explore the most affordable flight options available from Colombo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.