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 American Airlines, Etihad Airways and Qatar Airways. Something to consider prior to booking your flight.

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

Our data shows that March tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Colombo Bandaranaike Intl Airport. Users have commonly found prices around $1,401 for the month, but tickets can be as low as $871. Due to multiple factors, prepare for potentially higher prices in January.

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.

$523+ Cheap 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 $1,237 and $1,344 in October. The cheapest round-trip price found within the last 3 days was $932 on Multiple Airlines (Oct 15-Nov 30).

Q: What is the cheapest day to fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Q: What is the cheapest day to fly round-trip from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport?

Friday flights are generally found to be more expensive for flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

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

Unlike at noon, when flights are generally more expensive, you can save up to 20% on flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the morning.

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

Round-trip from	$932 (Orbitz)
One-way from	$523 (Booking.com)
Popular in	August
Cheapest in	February
Average price	$1,293

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. 11% potential increase in price ($157 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

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 September 11, 2025.

Wed 10/156:25 pmCMB - IAD

2 stops28h 35mMultiple Airlines

Sun 11/3010:00 pmIAD - CMB

2 stops31h 25mMultiple Airlines

Deal found 9/10

$932

Fri 12/192:40 amCMB - IAD

2 stops48h 30mMultiple Airlines

Sun 1/188:30 pmIAD - CMB

1 stop27h 15mMultiple Airlines

Deal found 9/9

$1,047

Mon 9/228:35 pmCMB - IAD

3 stops53h 10mMultiple Airlines

Fri 11/71:20 pmIAD - CMB

2 stops36h 40mMultiple Airlines

Deal found 9/11

$1,061

Fri 12/194:00 amCMB - IAD

1 stop22h 20mEtihad Airways

Sun 1/189:10 pmIAD - CMB

1 stop31h 35mEtihad Airways

Deal found 9/9

$1,095

Fri 10/246:55 pmCMB - IAD

2 stops29h 40mMultiple Airlines

Fri 10/3111:55 pmIAD - CMB

2 stops30h 30mMultiple Airlines

Deal found 9/9

$1,152

Thu 9/1810:05 amCMB - IAD

1 stop39h 35mEtihad Airways

Sun 12/289:10 pmIAD - CMB

1 stop36h 40mEtihad Airways

Deal found 9/10

$1,171

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 September 11, 2025.

Wed 10/156:25 pmCMB - IAD

2 stops28h 35mMultiple Airlines

Sun 11/3010:00 pmIAD - CMB

2 stops31h 25mMultiple Airlines

Deal found 9/10

$932

Fri 12/194:00 amCMB - IAD

1 stop22h 20mEtihad Airways

Sun 1/189:10 pmIAD - CMB

1 stop31h 35mEtihad Airways

Deal found 9/9

$1,095

Mon 9/228:20 pmCMB - IAD

1 stop28h 50mQatar Airways

Fri 11/78:05 pmIAD - CMB

1 stop19h 20mQatar Airways

Deal found 9/11

$1,202

Fri 12/192:40 amCMB - IAD

2 stops48h 30mMultiple Airlines

Sun 1/188:30 pmIAD - CMB

1 stop27h 15mMultiple Airlines

Deal found 9/9

$1,047

Mon 9/228:35 pmCMB - IAD

3 stops53h 10mMultiple Airlines

Fri 11/71:20 pmIAD - CMB

2 stops36h 40mMultiple Airlines

Deal found 9/11

$1,061

Fri 10/246:55 pmCMB - IAD

2 stops29h 40mMultiple Airlines

Fri 10/3111:55 pmIAD - CMB

2 stops30h 30mMultiple Airlines

Deal found 9/9

$1,152

Last-minute flights from Colombo to Dulles Intl
Discover last-minute flight deals from Colombo to Dulles Intl. Data last updated September 11, 2025 and is based on user searches.

Thu 9/184:05 amCMB - IAD

1 stop21h 35mEtihad Airways

Sun 12/289:10 pmIAD - CMB

1 stop36h 40mEtihad Airways

Deal found 9/11

$1,171

Thu 9/188:35 pmCMB - IAD

3 stops53h 10mMultiple Airlines

Sun 12/286:00 pmIAD - CMB

2 stops37h 00mMultiple Airlines

Deal found 9/9

$1,197

Sun 9/213:35 amCMB - IAD

1 stop21h 35mQatar Airways

Fri 11/710:40 amIAD - CMB

1 stop19h 20mQatar Airways

Deal found 9/11

$1,202

Mon 9/228:35 pmCMB - IAD

3 stops53h 10mMultiple Airlines

Fri 11/71:20 pmIAD - CMB

2 stops36h 40mMultiple Airlines

Deal found 9/11

$1,061

Wed 10/156:25 pmCMB - IAD

2 stops28h 35mMultiple Airlines

Sun 11/3010:00 pmIAD - CMB

2 stops31h 25mMultiple Airlines

Deal found 9/10

$932

Fri 10/246:55 pmCMB - IAD

2 stops29h 40mMultiple Airlines

Fri 10/3111:55 pmIAD - CMB

2 stops30h 30mMultiple Airlines

Deal found 9/9

$1,152

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 September 11, 2025.

Tue 11/1110:00 pmCMB - IAD

2 stops31h 45mIndiGo

Deal found 9/10

$523

Sat 10/49:55 pmCMB - IAD

2 stops47h 20mIndiGo

Deal found 9/10

$542

Fri 10/35:05 pmCMB - IAD

3 stops39h 21mMultiple Airlines

Deal found 9/10

$547

Tue 10/1412:35 amCMB - IAD

2 stops49h 05mMultiple Airlines

Deal found 9/10

$550

Wed 11/1210:00 pmCMB - IAD

2 stops31h 45mIndiGo

Deal found 9/10

$554

Tue 10/145:15 pmCMB - IAD

3 stops36h 01mMultiple Airlines

Deal found 9/10

$574

Mon 10/2710:00 pmCMB - IAD

2 stops31h 45mIndiGo

Deal found 9/10

$580

Tue 10/74:00 pmCMB - IAD

3 stops37h 16mMultiple Airlines

Deal found 9/10

$586

Thu 9/183:20 amCMB - IAD

3 stops46h 20mMultiple Airlines

Deal found 9/10

$587

Thu 10/24:00 pmCMB - IAD

3 stops59h 59mMultiple Airlines

Deal found 9/10

$588

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

Wed 10/15

6:25 pm-1:30 pm

2 stops28h 35m

Washington, D.C. Dulles Intl

Sun 11/30

10:00 pm-3:55 pm

2 stops31h 25m

$932

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 12/19

2:40 am-4:40 pm

2 stops48h 30m

Washington, D.C. Dulles Intl

Sun 1/18

8:30 pm-10:15 am

1 stop27h 15m

$1,047

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 9/22

8:35 pm-4:15 pm

3 stops53h 10m

Washington, D.C. Dulles Intl

Fri 11/7

1:20 pm-12:30 pm

2 stops36h 40m

$1,061

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 12/19

4:00 am-3:50 pm

1 stop22h 20m

Washington, D.C. Dulles Intl

Sun 1/18

9:10 pm-3:15 pm

1 stop31h 35m

$1,095

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 10/24

6:55 pm-3:05 pm

2 stops29h 40m

Washington, D.C. Dulles Intl

Fri 10/31

11:55 pm-3:55 pm

2 stops30h 30m

$1,152

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 9/22

8:20 pm-3:40 pm

1 stop28h 50m

Washington, D.C. Dulles Intl

Fri 11/7

8:05 pm-1:55 am

1 stop19h 20m

$1,202

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 10/15

7:15 pm-3:39 pm

3 stops53h 54m

$571

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 9/16

9:45 am-4:10 pm

2 stops39h 55m

$596

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 12/11

10:00 pm-7:15 pm

2 stops31h 45m

$601

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 9/20

7:35 am-4:10 pm

2 stops42h 05m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results

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, August 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 $292). Flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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

3,624 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

3,624 reviews

Qatar Airways

7.4

Good

3,624 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

1,250 reviews

Qatar Airways

7.4

Good

3,624 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

10,000 reviews

Qatar Airways

7.4

Good

3,624 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

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 26% 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, August 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 $292). Flying from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

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$1,331	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%

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.

$523+ 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 11/11. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 September 11, 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 September 11, 2025.

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.

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?

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.

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

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 September 11, 2025.