HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colombo

$436+ Cheap flights from Dulles Intl (IAD) to Bandaranaike Intl (CMB)

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CMB
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Colombo 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.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Colombo Bandaranaike Intl are usually found in April or February, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Colombo

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Colombo (CMB). 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 September 15, 2025.

Round-trip from

$853
(Mytrip)

One-way from

$436
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$968
From Washington, D.C. Dulles Intl to Colombo Bandaranaike Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Colombo Bandaranaike Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Dulles Intl to Colombo

Cheapest flights from Dulles Intl to Colombo
Explore the most affordable flight options available from Dulles Intl to Colombo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:05 pmIAD - CMB
1 stop19h 15mEtihad Airways
Tue 10/284:00 amCMB - IAD
1 stop22h 20mEtihad Airways
Deal found 9/13$853
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:10 pmIAD - CMB
1 stop19h 10mEtihad Airways
Sat 1/319:50 amCMB - IAD
1 stop40h 30mEtihad Airways
Deal found 9/14$854
This oojo deal was found by Cheapflights users on 9/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:10 pmIAD - CMB
1 stop24h 35mEtihad Airways
Sat 11/154:00 amCMB - IAD
1 stop22h 20mEtihad Airways
Deal found 9/13$860
This CrystalTravel deal was found by Cheapflights users on 9/14. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:05 pmIAD - CMB
1 stop19h 20mQatar Airways
Sun 12/147:30 pmCMB - IAD
1 stop30h 55mQatar Airways
Deal found 9/14$867
This CrystalTravel deal was found by Cheapflights users on 9/13. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:00 pmIAD - CMB
1 stop19h 35mQatar Airways
Fri 9/263:35 amCMB - IAD
1 stop21h 35mQatar Airways
Deal found 9/13$873
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/119:40 pmIAD - CMB
1 stop22h 05mTurkish Airlines
Tue 10/287:40 amCMB - IAD
1 stop22h 05mTurkish Airlines
Deal found 9/13$878
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/119:00 pmIAD - CMB
1 stop27h 10mQatar Airways
Mon 10/273:25 amCMB - IAD
1 stop23h 00mQatar Airways
Deal found 9/13$882
This Ovago deal was found by Cheapflights users on 9/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:05 pmIAD - CMB
1 stop19h 20mQatar Airways
Thu 12/44:15 amCMB - IAD
1 stop22h 10mQatar Airways
Deal found 9/13$896
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/31:30 pmIAD - CMB
1 stop30h 10mTurkish Airlines
Sat 11/297:40 amCMB - IAD
1 stop38h 35mTurkish Airlines
Deal found 9/14$897
This JetBlue deal was found by Cheapflights users on 9/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:00 pmIAD - CMB
1 stop19h 25mJetBlue
Tue 12/23:25 amCMB - IAD
1 stop23h 00mJetBlue
Deal found 9/15$901
This Qatar Airways deal was found by Cheapflights users on 9/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:05 pmIAD - CMB
1 stop33h 55mQatar Airways
Sun 2/224:15 amCMB - IAD
1 stop22h 10mQatar Airways
Deal found 9/13$903

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Colombo 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 September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Colombo

Route

Depart

Return

Price

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Sun 3/8

10:10 pm-3:15 pm

1 stop31h 35m

Colombo Bandaranaike Intl

Sun 3/22

4:00 am-4:50 pm

1 stop22h 20m

$884

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Wed 3/4

9:10 pm-3:15 pm

1 stop31h 35m

Colombo Bandaranaike Intl

Sat 3/14

4:40 pm-4:50 pm

1 stop33h 40m

$884

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Wed 11/12

10:40 am-4:30 pm

1 stop19h 20m

Colombo Bandaranaike Intl

Tue 2/24

4:15 am-3:55 pm

1 stop22h 10m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Fri 10/31

11:40 am-4:30 pm

1 stop19h 20m

Colombo Bandaranaike Intl

Tue 12/2

3:25 am-3:55 pm

1 stop23h 00m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Wed 11/19

10:40 am-1:55 am

1 stop28h 45m

Colombo Bandaranaike Intl

Sun 2/22

4:15 am-3:55 pm

1 stop22h 10m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Fri 10/31

11:40 am-4:30 pm

1 stop19h 20m

Colombo Bandaranaike Intl

Wed 12/3

4:15 am-3:55 pm

1 stop22h 10m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Mon 10/27

9:05 pm-1:55 am

1 stop19h 20m

Colombo Bandaranaike Intl

Fri 12/5

3:25 am-3:55 pm

1 stop23h 00m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Thu 10/30

9:05 pm-1:55 am

1 stop19h 20m

Colombo Bandaranaike Intl

Fri 12/5

7:30 pm-3:55 pm

1 stop30h 55m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Sun 10/26

11:40 am-4:30 pm

1 stop19h 20m

Colombo Bandaranaike Intl

Tue 12/2

3:25 am-3:55 pm

1 stop23h 00m

$901

Washington, D.C.Colombo

IAD - CMB

IADCMB

Washington, D.C. Dulles Intl

Wed 10/29

9:05 pm-2:45 am

1 stop20h 10m

Colombo Bandaranaike Intl

Fri 12/5

7:30 pm-3:55 pm

1 stop30h 55m

$901

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 results
1
2

Best time to book a flight from Dulles Intl to Colombo

Have a flexible travel schedule? Discover the best time to fly to Colombo from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Colombo. Price data was last updated on September 12, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport (average of $1,028). Flying from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport in December is currently the most expensive (average of $1,732). 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.

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

Find hourly flight availability from Dulles Intl to Colombo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 11% on airfare.

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

Reviews of airlines servicing Colombo

Get insights into the airlines that provide service to Colombo. 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 Colombo. Reviews last updated September 15, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport, such as Emirates, Qatar Airways, and Etihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,334 reviews
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,624 reviews
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Etihad Airways
7.4
Good
1,250 reviews
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
3,968 reviews
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
JetBlue
7.2
Good
2,912 reviews
Emirates
8.1
Very good
3,334 reviews

Food

7.9

Entertainment

8.2

Crew

8.3

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Colombo. 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 Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport?

    A quick flight from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport can take about 19h 20m. Etihad Airways provides one of the quickest options available for as low as $901. Airlines will cover a distance of 8928 mi. This flight may include one or multiple stops.

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

    According to our current data, Etihad Airways ($750), Air India ($830), and JetBlue ($851) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport. Users have found that Etihad Airways is 29% cheaper than the other options available to this destination.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport?

    Most of the time, Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport flights that have layovers will stop in Abu Dhabi.

  • What are some popular things to do or see while on a layover in Abu Dhabi?

    Emirates Palace, Emirates Park Zoo, and Etihad Towers are the most popular attractions in Abu Dhabi if you're in need of something to do during your layover. Emirates Palace, Emirates Park Zoo, and Etihad Towers can be accessed by traveling approximately 21.1 mi, 7.9 mi, and 20.8 mi, respectively from Abu Dhabi Zayed Intl. Travelers can rent a car at Abu Dhabi Zayed Intl for an average daily rate of $26 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport flights?

    Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport flights have a layover in Doha least often.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Colombo 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 Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport (average of $1,028). Flying from Washington, D.C. Dulles Intl Airport to Colombo Bandaranaike Intl Airport in December is currently the most expensive (average of $1,732). 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

Traveling to a place near Colombo Bandaranaike Intl Airport?

Book flights to Colombo Bandaranaike Intl Airport if you plan to visit one of these locations
Negombo

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 Dulles Intl to Colombo

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Colombo flights
Baltimore to Colombo flights

Top 9 airlines flying from Dulles Intl to Colombo

Discover the top 9 airlines that operate flights from Dulles Intl to Colombo. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$750Average$1,042FlexibilityNo cancel feeOn-time75%
Air IndiaCheapest$830Average$1,122FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$851Average$1,010FlexibilityNo cancel feeOn-time62%
Turkish AirlinesCheapest$856Average$954FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$891Average$1,146FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$900Average$1,249FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$954Average$985FlexibilityNo cancel feeOn-time75%
IndiGoCheapest$1,082Average$1,301FlexibilityNo cancel feeOn-time80%
EmiratesCheapest$1,400Average$1,720FlexibilityNo cancel feeOn-time75%

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.