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Dulles Intl

$582+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
CMB — IAD
Apr 13 — Apr 201
Mon 4/13
Mon 4/20
1 adult, Economy
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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 March 14, 2026.

This SmartFares deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:05 am
CMB
-
IAD
2 stops40h 10m
Multiple Airlines
Tue 9/228:20 pm
IAD
-
CMB
2 stops26h 40m
Multiple Airlines
Deal found 3/11$873
This SmartFares deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:05 am
CMB
-
IAD
2 stops38h 40m
Multiple Airlines
Wed 5/278:20 pm
IAD
-
CMB
2 stops40h 20m
Multiple Airlines
Deal found 3/13$874
This SmartFares deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:05 am
CMB
-
IAD
2 stops40h 10m
Multiple Airlines
Thu 8/278:20 pm
IAD
-
CMB
2 stops40h 20m
Multiple Airlines
Deal found 3/13$884
This SmartFares deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:05 am
CMB
-
IAD
2 stops38h 30m
Multiple Airlines
Wed 5/278:20 pm
IAD
-
CMB
2 stops40h 20m
Multiple Airlines
Deal found 3/13$899
This Expedia deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:30 pm
CMB
-
IAD
2 stops31h 05m
Multiple Airlines
Mon 5/258:20 pm
IAD
-
CMB
2 stops26h 40m
Multiple Airlines
Deal found 3/11$906
This Expedia deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:30 pm
CMB
-
IAD
2 stops31h 05m
Multiple Airlines
Wed 5/278:20 pm
IAD
-
CMB
2 stops26h 40m
Multiple Airlines
Deal found 3/13$907
This Expedia deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:30 pm
CMB
-
IAD
2 stops31h 05m
Multiple Airlines
Sun 5/315:55 pm
IAD
-
CMB
2 stops29h 05m
Multiple Airlines
Deal found 3/11$931
This Travelocity deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:05 pm
CMB
-
IAD
2 stops51h 30m
Multiple Airlines
Tue 5/195:55 pm
IAD
-
CMB
2 stops37h 25m
Multiple Airlines
Deal found 3/11$941
This Orbitz deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:30 pm
CMB
-
IAD
2 stops31h 05m
Multiple Airlines
Mon 6/15:55 pm
IAD
-
CMB
2 stops29h 05m
Multiple Airlines
Deal found 3/12$951
This SmartFares deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:05 pm
CMB
-
IAD
2 stops51h 30m
Multiple Airlines
Mon 5/258:20 pm
IAD
-
CMB
2 stops40h 20m
Multiple Airlines
Deal found 3/12$954
This KAYAK deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:05 am
CMB
-
IAD
2 stops40h 10m
Multiple Airlines
Thu 4/305:42 pm
IAD
-
CMB
2 stops25h 48m
Multiple Airlines
Deal found 3/14$979
This Travelocity deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:30 pm
CMB
-
IAD
2 stops31h 05m
Multiple Airlines
Fri 5/295:55 pm
IAD
-
CMB
2 stops29h 05m
Multiple Airlines
Deal found 3/11$985

Find flight deals from Colombo to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Colombo (CMB) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$873
(SmartFares)

One-way from

$582
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$1,064
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. 8% potential increase in price ($122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colombo to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 14, 2026.
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

Cheapest round-trip

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 4/10

4:20 pm-9:45 am

1 stop26h 55m

Washington, D.C. Dulles Intl

Fri 4/17

3:10 pm-8:35 pm

1 stop19h 55m

$1,031

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 4/20

9:50 pm-9:45 am

1 stop21h 25m

Washington, D.C. Dulles Intl

Wed 5/27

3:10 pm-3:00 am

1 stop26h 20m

$1,047

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 5/1

4:20 pm-9:45 am

1 stop26h 55m

Washington, D.C. Dulles Intl

Tue 6/2

3:10 pm-8:35 pm

1 stop19h 55m

$1,047

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 5/4

4:20 pm-9:45 am

1 stop26h 55m

Washington, D.C. Dulles Intl

Sat 10/31

3:35 pm-8:20 pm

1 stop19h 15m

$1,077

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 4/24

9:50 pm-9:45 am

1 stop21h 25m

Washington, D.C. Dulles Intl

Fri 5/1

3:10 pm-3:00 am

1 stop26h 20m

$1,097

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 5/3

4:20 pm-9:45 am

1 stop26h 55m

Washington, D.C. Dulles Intl

Thu 6/4

3:10 pm-8:35 pm

1 stop19h 55m

$1,126

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 4/7

9:50 pm-9:45 am

1 stop21h 25m

Washington, D.C. Dulles Intl

Tue 4/14

3:10 pm-3:00 am

1 stop26h 20m

$1,304

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 4/9

10:30 am-8:45 am

1 stop31h 45m

Washington, D.C. Dulles Intl

Thu 4/16

8:20 pm-3:05 am

1 stop21h 15m

$1,352
Quickest round-trip

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 4/10

9:50 pm-9:45 am

1 stop21h 25m

Washington, D.C. Dulles Intl

Thu 7/9

3:10 pm-8:35 pm

1 stop19h 55m

$1,405

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Mon 5/4

4:20 pm-9:45 am

1 stop26h 55m

Washington, D.C. Dulles Intl

Sat 10/31

10:50 am-8:20 pm

2 stops24h 00m

$1,425

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colombo Bandaranaike Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated March 14, 2026.
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, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,740 reviews

Entertainment

7.3

Food

7.3

Crew

7.9

Boarding

7.5

Overall

7.4

Comfort

7.4

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
3,740 reviews
Qatar Airways
7.4
Good
3,740 reviews

Entertainment

7.3

Food

7.3

Crew

7.9

Boarding

7.5

Overall

7.4

Comfort

7.4

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
7.3
Good
1,426 reviews
Qatar Airways
7.4
Good
3,740 reviews

Entertainment

7.3

Food

7.3

Crew

7.9

Boarding

7.5

Overall

7.4

Comfort

7.4

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
7.1
Good
11,464 reviews
Qatar Airways
7.4
Good
3,740 reviews

Entertainment

7.3

Food

7.3

Crew

7.9

Boarding

7.5

Overall

7.4

Comfort

7.4

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

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?

    Qatar Airways, at $994, 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 22% 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Colombo to Dulles Intl

Discover the top 3 airlines that operate flights from Colombo to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$994Average$1,335FlexibilityNo cancel feeOn-time68%
Etihad AirwaysCheapest$1,064Average$1,250FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$1,280Average$1,337FlexibilityNo cancel feeOn-time71%

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