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 Sri Lanka to Washington, D.C. Dulles Intl Airport?

When booking a flight from Sri Lanka to Washington, D.C. Dulles Intl Airport, you may want to consider flying on Etihad Airways, Qatar Airways or American Airlines as they are the most popular for this route.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sri Lanka to Washington, D.C. Dulles Intl Airport as you normally would.

Can I find deals for flights from Sri Lanka to Dulles Intl that include hotel bookings?

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

How can I find direct flights from Sri Lanka to Dulles Intl?

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

Can I find deals for business class flights from Sri Lanka to Dulles Intl?

Yes. Cheapflights offers flight deals from Sri Lanka 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.

$477+ Cheap Flights from Sri Lanka to Washington, D.C. Dulles Intl Airport

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1. Tell us where you want to go

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Cheap flight deals from Sri Lanka to Dulles Intl

Round-trip from	$904 (Orbitz)
One-way from	$477 (Kiwi.com)
Popular in	January
Cheapest in	March
Average price	$1,795

From Sri Lanka to Washington, D.C. Dulles Intl

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One-way flight from Sri Lanka to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 4% potential increase in price ($74 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($53 potential savings vs. average RT price).

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Average for round-trip flights in November 2025

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Find flight deals from Sri Lanka to Dulles Intl

Cheapest flights from Sri Lanka to Dulles Intl
Explore the most affordable flight options available from Sri Lanka to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

Wed 12/32:40 amCMB - IAD

2 stops27h 55mMultiple Airlines

Thu 5/78:45 pmIAD - CMB

2 stops39h 55mMultiple Airlines

Deal found 10/30

$879

Wed 11/268:55 pmCMB - IAD

2 stops29h 05mMultiple Airlines

Fri 12/56:10 pmIAD - CMB

2 stops23h 40mMultiple Airlines

Deal found 10/31

$1,110

Wed 12/34:00 amCMB - IAD

1 stop22h 00mEtihad Airways

Thu 5/73:35 pmIAD - CMB

1 stop38h 20mEtihad Airways

Deal found 10/30

$1,220

Best flights from Sri Lanka to Dulles Intl
Discover carefully curated flight deals from Sri Lanka to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2025.

Wed 12/32:40 amCMB - IAD

2 stops27h 55mMultiple Airlines

Thu 5/78:45 pmIAD - CMB

2 stops39h 55mMultiple Airlines

Deal found 10/30

$879

Sun 2/810:15 pmCMB - IAD

2 stops31h 35mMultiple Airlines

Tue 2/242:35 pmIAD - CMB

1 stop25h 45mMultiple Airlines

Deal found 10/31

$994

Wed 2/1812:35 amCMB - IAD

2 stops29h 15mMultiple Airlines

Fri 3/62:35 pmIAD - CMB

1 stop31h 10mMultiple Airlines

Deal found 11/1

$1,092

Last-minute flights from Sri Lanka to Dulles Intl
Discover last-minute flight deals from Sri Lanka to Dulles Intl. Data last updated November 3, 2025 and is based on user searches.

Tue 11/253:25 amCMB - IAD

1 stop23h 00mQatar Airways

Fri 12/510:40 amIAD - CMB

1 stop28h 45mQatar Airways

Deal found 10/31

$1,496

Wed 11/268:55 pmCMB - IAD

2 stops29h 05mMultiple Airlines

Fri 12/56:10 pmIAD - CMB

2 stops23h 40mMultiple Airlines

Deal found 10/31

$1,110

Wed 11/267:40 amCMB - IAD

1 stop22h 10mTurkish Airlines

Fri 12/51:30 pmIAD - CMB

1 stop37h 20mTurkish Airlines

Deal found 10/31

$1,307

One-way flights from Sri Lanka to Dulles Intl
Search for one-way flight options from Sri Lanka to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated November 3, 2025.

Fri 12/54:00 amCMB - IAD

2 stops29h 35mMultiple Airlines

Deal found 11/1

$477

Sun 11/1610:15 pmCMB - IAD

2 stops31h 35mIndiGo

Deal found 11/1

$545

Wed 3/257:15 pmCMB - IAD

2 stops48h 20mMultiple Airlines

Deal found 11/2

$581

Sat 1/2410:15 pmCMB - IAD

2 stops48h 00mIndiGo

Deal found 11/1

$590

Fri 3/138:20 amCMB - IAD

2 stops35h 15mMultiple Airlines

Deal found 11/2

$623

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sri Lanka 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 12/3

2:40 am-8:05 pm

2 stops27h 55m

Washington, D.C. Dulles Intl

Thu 5/7

8:45 pm-10:10 pm

2 stops39h 55m

$879

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 2/8

10:15 pm-7:20 pm

2 stops31h 35m

Washington, D.C. Dulles Intl

Tue 2/24

2:35 pm-2:50 am

1 stop25h 45m

$994

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Wed 2/18

12:35 am-7:20 pm

2 stops29h 15m

Washington, D.C. Dulles Intl

Fri 3/6

2:35 pm-8:15 am

1 stop31h 10m

$1,092

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 12/6

9:35 pm-8:31 am

3 stops45h 26m

$541

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sun 11/16

10:15 pm-7:20 pm

2 stops31h 35m

$545

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 1/24

10:15 pm-11:45 am

2 stops48h 00m

$590

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Thu 3/12

3:00 am-10:05 am

3 stops40h 35m

$668

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Tue 3/24

1:10 am-10:05 am

2 stops42h 25m

$688

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Fri 12/5

4:00 am-3:30 pm

1 stop22h 00m

$728

ColomboWashington, D.C.

CMB - IAD

CMBIAD

Colombo Bandaranaike Intl

Sat 11/15

4:00 am-3:30 pm

1 stop22h 00m

$728

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Best time to book a flight from Sri Lanka to Dulles Intl

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

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

Currently, July is the cheapest month in which you can book a flight from Sri Lanka to Washington, D.C. Dulles Intl Airport (average of $798). Flying from Sri Lanka 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

Get a feel of what it's like to fly with Qatar Airways, Etihad Airways, and American Airlines from Sri Lanka to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Qatar Airways

7.4

Good

3,661 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

3,661 reviews

Qatar Airways

7.4

Good

3,661 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

1,284 reviews

Qatar Airways

7.4

Good

3,661 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

11,032 reviews

Qatar Airways

7.4

Good

3,661 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

Can I find deals for flights from Sri Lanka to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Sri Lanka to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sri Lanka to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sri Lanka to Dulles Intl.
Can I find deals for business class flights from Sri Lanka to Dulles Intl?
Yes. Cheapflights offers flight deals from Sri Lanka 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 Sri Lanka to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Sri Lanka to Washington, D.C. Dulles Intl Airport (average of $798). Flying from Sri Lanka 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

Alexandria

Woodbridge

Tysons

Arlington

Springfield

Hanover

Silver Spring

Fairfax

Fredericksburg

Falls Church

Owings Mills

Linthicum Heights

Manassas

Largo

Oxon Hill

Laurel

Towson

National Harbor

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Sri Lanka 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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$477+ Cheap flights from Sri Lanka 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sri Lanka 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 Sri Lanka to Dulles Intl

Keep the following information in mind while searching for Sri Lanka to Dulles Intl flight deals. Data was last updated November 3, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Sri Lanka to Dulles Intl

Cheapest flights from Sri Lanka to Dulles IntlExplore the most affordable flight options available from Sri Lanka to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

Explore the most affordable flight options available from Sri Lanka to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sri Lanka to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Sri Lanka to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sri Lanka with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Sri Lanka to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Sri Lanka 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 Sri Lanka to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Sri Lanka to Dulles Intl that include hotel bookings?

How can I find direct flights from Sri Lanka to Dulles Intl?

Can I find deals for business class flights from Sri Lanka to Dulles Intl?

What is the cheapest month to book a flight from Sri Lanka 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 Sri Lanka to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Sri Lanka to Dulles Intl

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Cheapest flights from Sri Lanka to Dulles Intl
Explore the most affordable flight options available from Sri Lanka to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.