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.

$471+ Cheap Flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport

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Find 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 October 28, 2025.

Mon 11/36:40 pmCMB - IAD

2 stops31h 20mMultiple Airlines

Mon 4/278:45 pmIAD - CMB

2 stops26h 20mMultiple Airlines

Deal found 10/27

$889

Sun 11/24:45 amCMB - IAD

3 stops34h 45mMultiple Airlines

Tue 4/283:35 pmIAD - CMB

1 stop38h 20mMultiple Airlines

Deal found 10/27

$911

Sun 11/24:00 amCMB - IAD

1 stop22h 00mEtihad Airways

Mon 4/273:35 pmIAD - CMB

1 stop25h 45mEtihad Airways

Deal found 10/27

$1,201

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 October 28, 2025.

Thu 3/129:55 amCMB - IAD

2 stops41h 15mMultiple Airlines

Wed 5/209:45 amIAD - CMB

2 stops41h 30mMultiple Airlines

Deal found 10/27

$1,118

Wed 3/1112:50 pmCMB - IAD

2 stops41h 39mAir Canada

Sun 3/159:00 amIAD - CMB

2 stops42h 00mAir Canada

Deal found 10/25

$1,227

Wed 3/118:00 amCMB - IAD

1 stop21h 50mTurkish Airlines

Sun 3/1510:15 pmIAD - CMB

1 stop22h 25mTurkish Airlines

Deal found 10/25

$1,571

Tue 3/101:45 amCMB - IAD

2 stops29h 00mEmirates

Sun 3/1511:15 amIAD - CMB

1 stop25h 10mEmirates

Deal found 10/25

$1,761

Thu 3/129:50 pmCMB - IAD

2 stops32h 55mEmirates

Wed 5/2010:55 amIAD - CMB

1 stop20h 10mEmirates

Deal found 10/26

$1,856

Last-minute flights from Colombo to Dulles Intl
Discover last-minute flight deals from Colombo to Dulles Intl. Data last updated October 28, 2025 and is based on user searches.

Sun 11/24:45 amCMB - IAD

3 stops34h 45mMultiple Airlines

Tue 4/283:35 pmIAD - CMB

1 stop38h 20mMultiple Airlines

Deal found 10/27

$911

Sun 11/24:00 amCMB - IAD

1 stop22h 00mEtihad Airways

Mon 4/273:35 pmIAD - CMB

1 stop25h 45mEtihad Airways

Deal found 10/27

$1,201

Mon 11/36:40 pmCMB - IAD

2 stops31h 20mMultiple Airlines

Mon 4/278:45 pmIAD - CMB

2 stops26h 20mMultiple Airlines

Deal found 10/27

$889

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 October 28, 2025.

Wed 11/2610:15 pmCMB - IAD

2 stops31h 35mIndiGo

Deal found 10/28

$471

Sat 11/224:00 amCMB - IAD

2 stops48h 16mMultiple Airlines

Deal found 10/28

$475

Sun 11/1610:15 pmCMB - IAD

2 stops48h 00mIndiGo

Deal found 10/26

$483

Mon 11/244:00 amCMB - IAD

3 stops42h 22mMultiple Airlines

Deal found 10/28

$523

Mon 11/245:05 pmCMB - IAD

2 stops32h 55mMultiple Airlines

Deal found 10/28

$532

Thu 11/274:50 amCMB - IAD

3 stops34h 40mMultiple Airlines

Deal found 10/28

$581

Thu 11/278:20 amCMB - IAD

2 stops34h 30mMultiple Airlines

Deal found 10/28

$586

Tue 1/139:55 pmCMB - IAD

3 stops53h 05mMultiple Airlines

Deal found 10/27

$718

Cheap flight deals from Colombo to Dulles Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,118 (FlightHub)
One-way from	$471 (Priceline)
Popular in	August
Cheapest in	February
Average price	$1,263

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.

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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. 9% potential increase in price ($133 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

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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

Thu 3/12

9:55 am-5:40 pm

2 stops41h 15m

Washington, D.C. Dulles Intl

Wed 5/20

9:45 am-12:45 pm

2 stops41h 30m

$1,118

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 3/11

12:50 pm-8:59 pm

2 stops41h 39m

Washington, D.C. Dulles Intl

Sun 3/15

9:00 am-12:30 pm

2 stops42h 00m

$1,227

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 3/11

8:00 am-8:20 pm

1 stop21h 50m

Washington, D.C. Dulles Intl

Sun 3/15

10:15 pm-6:10 am

1 stop22h 25m

$1,571

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 3/10

1:45 am-9:15 pm

2 stops29h 00m

Washington, D.C. Dulles Intl

Sun 3/15

11:15 am-9:55 pm

1 stop25h 10m

$1,761

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 3/12

9:50 pm-9:15 pm

2 stops32h 55m

Washington, D.C. Dulles Intl

Wed 5/20

10:55 am-4:35 pm

1 stop20h 10m

$1,856

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 11/16

10:15 pm-11:45 am

2 stops48h 00m

$483

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 11/15

4:00 am-3:30 pm

1 stop22h 00m

$728

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 1/12

4:30 am-11:45 am

3 stops41h 45m

$728

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 11/25

4:00 am-3:30 pm

1 stop22h 00m

$728

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 11/23

4:00 am-3:30 pm

1 stop22h 00m

$740

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 11 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 October.

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

What is the cheapest month to book a flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport (average of $798). Flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $1,563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

3,658 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

3,658 reviews

Qatar Airways

7.4

Good

3,658 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

1,283 reviews

Qatar Airways

7.4

Good

3,658 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

11,034 reviews

Qatar Airways

7.4

Good

3,658 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 Air Canada fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in about 41h 39m. The time it takes to get you to your destination can typically vary by up to . The distance between Colombo Bandaranaike Intl Airport and Washington, D.C. Dulles Intl Airport is about 8928 mi.
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 28% 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.
What is the cheapest month to book a flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport (average of $798). Flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $1,563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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$1,335	FlexibilityNo cancel fee	On-time68%
Etihad Airways	Cheapest$942	Average$1,250	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$1,267	Average$1,357	FlexibilityNo cancel fee	On-time71%

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$471+ 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 11/26. 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

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2. Select your favorite providers

3. Compare prices and book

Find 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 October 28, 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 October 28, 2025.

Cheap 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 October.

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

What is the cheapest month to book a flight 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?

What is the cheapest month to book a flight from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

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

Browse thousands of different options on Cheapflights for your next trip

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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

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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 October 28, 2025.