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 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.

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 $1,429 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.

$554+ Flights from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport

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 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.

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Cheap flight deals from Colombo to Dulles Intl

Round-trip from	$868 (FlightHub)
One-way from	$554 (Booking.com)
Popular in	August
Cheapest in	December
Average price	$1,335

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

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

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Highest demand for flights based on searches. 13% potential increase in price ($192 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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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 July 29, 2025.

Mon 10/275:05 pmCMB - IAD

1 stop24h 15mAir India

Tue 2/1011:00 amIAD - CMB

1 stop33h 50mAir India

Deal found 7/27

$868

Wed 9/1710:05 amCMB - IAD

2 stops39h 40mMultiple Airlines

Thu 11/278:30 pmIAD - CMB

2 stops32h 55mMultiple Airlines

Deal found 7/27

$889

Thu 9/259:55 pmCMB - IAD

2 stops47h 20mIndiGo

Tue 12/29:10 pmIAD - CMB

2 stops46h 45mIndiGo

Deal found 7/27

$1,036

Tue 9/169:50 pmCMB - IAD

1 stop27h 50mEtihad Airways

Tue 9/3010:05 pmIAD - CMB

1 stop19h 15mEtihad Airways

Deal found 7/29

$1,177

Tue 9/163:25 amCMB - IAD

2 stops27h 10mAir Canada

Wed 10/19:35 amIAD - CMB

2 stops41h 40mAir Canada

Deal found 7/29

$1,207

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 July 29, 2025.

Mon 10/275:05 pmCMB - IAD

1 stop24h 15mAir India

Tue 2/1011:00 amIAD - CMB

1 stop33h 50mAir India

Deal found 7/27

$868

Wed 9/1710:05 amCMB - IAD

2 stops39h 40mMultiple Airlines

Thu 11/278:30 pmIAD - CMB

2 stops32h 55mMultiple Airlines

Deal found 7/27

$889

Thu 9/259:55 pmCMB - IAD

2 stops47h 20mIndiGo

Tue 12/29:10 pmIAD - CMB

2 stops46h 45mIndiGo

Deal found 7/27

$1,036

Tue 9/169:50 pmCMB - IAD

1 stop27h 50mEtihad Airways

Tue 9/3010:05 pmIAD - CMB

1 stop19h 15mEtihad Airways

Deal found 7/29

$1,177

Tue 9/163:25 amCMB - IAD

2 stops27h 10mAir Canada

Sat 9/275:37 pmIAD - CMB

2 stops33h 38mAir Canada

Deal found 7/29

$1,207

Last-minute flights from Colombo to Dulles Intl
Discover last-minute flight deals from Colombo to Dulles Intl. Data last updated July 29, 2025 and is based on user searches.

Mon 8/46:25 pmCMB - IAD

2 stops31h 20mMultiple Airlines

Thu 11/138:30 pmIAD - CMB

2 stops32h 55mMultiple Airlines

Deal found 7/28

$1,365

Mon 8/410:15 pmCMB - IAD

2 stops30h 45mAir China

Fri 11/1410:00 pmIAD - CMB

2 stops60h 35mAir China

Deal found 7/28

$1,535

Tue 8/58:20 amCMB - IAD

2 stops36h 25mAir India

Fri 11/1411:00 amIAD - CMB

1 stop33h 50mAir India

Deal found 7/28

$1,420

Tue 8/54:30 pmCMB - IAD

1 stop33h 10mEtihad Airways

Tue 11/119:10 pmIAD - CMB

1 stop24h 35mEtihad Airways

Deal found 7/28

$1,770

Wed 8/610:30 amCMB - IAD

2 stops55h 40mEmirates

Fri 11/1410:30 amIAD - CMB

1 stop19h 20mEmirates

Deal found 7/28

$2,122

Thu 8/71:40 amCMB - IAD

2 stops29h 15mAir Canada

Wed 8/209:35 amIAD - CMB

2 stops41h 40mAir Canada

Deal found 7/28

$1,554

Thu 8/712:50 amCMB - IAD

3 stops49h 05mSingapore Airlines

Tue 8/197:59 pmIAD - CMB

2 stops42h 06mSingapore Airlines

Deal found 7/28

$3,187

Fri 8/85:25 pmCMB - IAD

3 stops56h 15mGulf Air

Sun 8/1710:05 pmIAD - CMB

3 stops49h 55mGulf Air

Deal found 7/28

$3,329

Sun 8/105:05 pmCMB - IAD

2 stops27h 40mAir India

Mon 8/1812:50 pmIAD - CMB

1 stop33h 00mAir India

Deal found 7/28

$1,017

Mon 8/253:35 amCMB - IAD

1 stop21h 35mQatar Airways

Thu 11/138:05 pmIAD - CMB

1 stop19h 20mQatar Airways

Deal found 7/27

$1,708

Tue 8/269:55 pmCMB - IAD

2 stops47h 20mIndiGo

Thu 11/139:10 pmIAD - CMB

2 stops46h 45mIndiGo

Deal found 7/27

$1,255

Tue 8/262:40 pmCMB - IAD

3 stops30h 05mMultiple Airlines

Thu 11/139:10 pmIAD - CMB

2 stops46h 45mMultiple Airlines

Deal found 7/27

$1,311

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 July 29, 2025.

Sun 10/129:55 pmCMB - IAD

2 stops47h 20mIndiGo

Deal found 7/28

$554

Fri 10/37:30 pmCMB - IAD

3 stops30h 10mMultiple Airlines

Deal found 7/29

$599

Thu 11/65:05 pmCMB - IAD

1 stop24h 15mAir India

Deal found 7/28

$604

Sun 10/129:50 pmCMB - IAD

1 stop27h 50mEtihad Airways

Deal found 7/28

$735

Sun 1/183:25 amCMB - IAD

1 stop23h 00mQatar Airways

Deal found 7/28

$837

Sat 1/104:55 pmCMB - IAD

3 stops58h 45mGulf Air

Deal found 7/27

$1,056

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

Mon 10/27

5:05 pm-7:50 am

1 stop24h 15m

Washington, D.C. Dulles Intl

Tue 2/10

11:00 am-7:20 am

1 stop33h 50m

$868

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 9/17

10:05 am-4:15 pm

2 stops39h 40m

Washington, D.C. Dulles Intl

Thu 11/27

8:30 pm-3:55 pm

2 stops32h 55m

$889

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 9/25

9:55 pm-11:45 am

2 stops47h 20m

Washington, D.C. Dulles Intl

Tue 12/2

9:10 pm-6:25 am

2 stops46h 45m

$1,036

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 9/16

9:50 pm-4:10 pm

1 stop27h 50m

Washington, D.C. Dulles Intl

Tue 9/30

10:05 pm-2:50 am

1 stop19h 15m

$1,177

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 9/16

3:25 am-9:05 pm

2 stops27h 10m

Washington, D.C. Dulles Intl

Sat 9/27

5:37 pm-12:45 pm

2 stops33h 38m

$1,207

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 10/12

9:55 pm-11:45 am

2 stops47h 20m

$554

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 10/3

7:30 pm-4:10 pm

3 stops30h 10m

$599

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 11/6

5:05 pm-6:50 am

1 stop24h 15m

$604

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 10/12

9:50 pm-4:10 pm

1 stop27h 50m

$735

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 1/18

3:25 am-3:55 pm

1 stop23h 00m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 11 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, 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 $306). 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.

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 Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Qatar Airways

7.4

Good

3,609 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

3,609 reviews

Qatar Airways

7.4

Good

3,609 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

1,227 reviews

Qatar Airways

7.4

Good

3,609 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

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

Air Canada

7.1

Good

9,822 reviews

Qatar Airways

7.4

Good

3,609 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

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

Gulf Air

7.1

Good

203 reviews

Qatar Airways

7.4

Good

3,609 reviews

Reviews

1 / 20

6.0

Good

preeti,Jan 2025

DOH - PHL

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

IndiGo

6.8

Okay

478 reviews

Qatar Airways

7.4

Good

3,609 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?
Air India, at $868, 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 IndiGo and Etihad Airways. Air India is priced at 28% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport one-way?
For one-way options, check prices for IndiGo. According to our data, you can fly for as low as $554. Users have also found prices from $604 and $735 on Air India and Etihad Airways, respectively.
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 $306). 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.

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Dundalk

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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$1,248	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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$554+ 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 10/12. 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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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 July 29, 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 July 29, 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?

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?

What are the cheapest airlines to fly from Colombo Bandaranaike Intl Airport to Washington, D.C. Dulles Intl Airport one-way?

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?

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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 July 29, 2025.