What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sri Lanka?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sri Lanka (average of $1,049). Flying from Washington, D.C. Reagan-National Airport to Sri Lanka in December is currently the most expensive (average of $1,788). 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.

In terms of precipitation, rainfall in Sri Lanka ranges from 2.4 - 13.8 inches per month. October is typically the wettest month, when rainfall can reach 13.8 in. February is typically the driest time to visit Sri Lanka when rainfall is around 2.4 in.

If weather is an important factor for your trip to Sri Lanka, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Sri Lanka?

Users have found that booking a flight from Washington, D.C. Reagan-National Airport to Sri Lanka at least 59 days early can save you up to 24% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from Washington, D.C. Reagan-National Airport to Sri Lanka for as little as $834 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,247 for flights departing within the next 3 days.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Sri Lanka?

February is one of the best times of the year to fly to Sri Lanka from Washington, D.C. Reagan-National Airport. Prices for February average $1,137 per person but you can even find prices for as low as $777. The most expensive prices can be found in the month of December. Opting for a February flight can save you 61% on your journey compared to booking in December

Can I find deals for flights from Reagan-National to Sri Lanka that include hotel bookings?

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

How can I find direct flights from Reagan-National to Sri Lanka?

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

Can I find deals for business class flights from Reagan-National to Sri Lanka?

Yes. Cheapflights offers flight deals from Reagan-National to Sri Lanka by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$571+ Flights from Washington, D.C. Reagan-National Airport to Sri Lanka

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Cheap flight deals from Reagan-National to Sri Lanka

Round-trip from	$987 (oojo)
One-way from	$571 (FlightHub)
Popular in	December
Cheapest in	February
Average price	$1,353

From Washington, D.C. Reagan-National to Sri Lanka

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One-way flight from Washington, D.C. Reagan-National to Sri Lanka

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Highest demand for flights based on searches. 14% potential increase in price ($187 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($64 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 Reagan-National to Sri Lanka

Cheapest flights from Reagan-National to Sri Lanka
Explore the most affordable flight options available from Reagan-National to Sri Lanka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Mon 10/206:25 amDCA - CMB

2 stops24h 10mAir India

Mon 10/274:00 pmCMB - DCA

2 stops32h 02mAir India

Deal found 7/26

$987

Thu 9/46:57 pmDCA - CMB

2 stops21h 38mQatar Airways

Fri 9/194:35 amCMB - DCA

2 stops25h 50mQatar Airways

Deal found 7/27

$1,161

Fri 9/126:45 pmDCA - CMB

2 stops24h 40mMultiple Airlines

Fri 9/192:10 pmCMB - DCA

2 stops28h 19mMultiple Airlines

Deal found 7/29

$1,267

Tue 9/168:40 pmDCA - CMB

2 stops30h 35mAir Canada

Sat 2/79:55 amCMB - DCA

2 stops45h 15mAir Canada

Deal found 7/29

$1,343

Wed 9/178:59 amDCA - CMB

2 stops53h 06mSingapore Airlines

Sun 2/811:05 amCMB - DCA

3 stops44h 20mSingapore Airlines

Deal found 7/29

$1,574

Best flights from Reagan-National to Sri Lanka
Discover carefully curated flight deals from Reagan-National to Sri Lanka that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Mon 10/206:25 amDCA - CMB

2 stops24h 10mAir India

Mon 10/274:00 pmCMB - DCA

2 stops32h 02mAir India

Deal found 7/26

$987

Thu 9/46:57 pmDCA - CMB

2 stops21h 38mQatar Airways

Fri 9/194:35 amCMB - DCA

2 stops25h 50mQatar Airways

Deal found 7/27

$1,161

Fri 9/126:45 pmDCA - CMB

2 stops24h 40mMultiple Airlines

Fri 9/192:10 pmCMB - DCA

2 stops28h 19mMultiple Airlines

Deal found 7/29

$1,267

Tue 9/168:40 pmDCA - CMB

2 stops30h 35mAir Canada

Sat 2/79:55 amCMB - DCA

2 stops45h 15mAir Canada

Deal found 7/29

$1,343

Wed 9/178:59 amDCA - CMB

2 stops53h 06mSingapore Airlines

Mon 2/912:45 amCMB - DCA

3 stops30h 40mSingapore Airlines

Deal found 7/29

$1,574

Last-minute flights from Reagan-National to Sri Lanka
Discover last-minute flight deals from Reagan-National to Sri Lanka. Data last updated July 29, 2025 and is based on user searches.

Thu 7/314:30 pmDCA - CMB

2 stops34h 45mMultiple Airlines

Mon 8/111:05 pmCMB - DCA

2 stops38h 27mMultiple Airlines

Deal found 7/27

$3,637

Sun 8/36:30 amDCA - CMB

2 stops39h 20mAir India

Wed 8/207:15 pmCMB - DCA

2 stops37h 14mAir India

Deal found 7/27

$1,987

Thu 8/76:56 pmDCA - CMB

2 stops28h 34mQatar Airways

Thu 8/2811:25 amCMB - DCA

2 stops44h 25mQatar Airways

Deal found 7/27

$1,342

Thu 8/79:59 amDCA - CMB

2 stops52h 06mSingapore Airlines

Wed 8/2712:50 amCMB - DCA

3 stops53h 39mSingapore Airlines

Deal found 7/29

$3,437

Fri 8/154:30 pmDCA - CMB

2 stops34h 45mAir Canada

Sat 8/231:40 amCMB - DCA

2 stops29h 38mAir Canada

Deal found 7/27

$5,153

Wed 8/203:45 pmDCA - CMB

2 stops24h 50mQatar Airways

Tue 9/93:35 amCMB - DCA

2 stops26h 50mQatar Airways

Deal found 7/28

$1,218

Wed 8/206:30 amDCA - CMB

2 stops31h 30mCathay Pacific

Mon 9/812:50 amCMB - DCA

2 stops28h 38mCathay Pacific

Deal found 7/28

$1,663

Thu 8/286:30 amDCA - CMB

2 stops48h 05mAir India

Sun 9/75:05 pmCMB - DCA

2 stops35h 47mAir India

Deal found 7/27

$1,086

Thu 8/288:59 amDCA - CMB

3 stops53h 06mSingapore Airlines

Sat 9/612:50 amCMB - DCA

2 stops53h 39mSingapore Airlines

Deal found 7/27

$2,253

Thu 8/282:59 pmDCA - CMB

2 stops32h 06mEmirates

Sat 9/138:35 pmCMB - DCA

3 stops36h 49mEmirates

Deal found 7/28

$4,999

One-way flights from Reagan-National to Sri Lanka
Search for one-way flight options from Reagan-National to Sri Lanka. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Tue 8/195:45 pmDCA - CMB

2 stops23h 50mQatar Airways

Deal found 7/28

$571

Sat 8/239:40 amDCA - CMB

3 stops33h 45mMultiple Airlines

Deal found 7/29

$732

Thu 8/288:59 amDCA - CMB

3 stops53h 06mSingapore Airlines

Deal found 7/28

$1,444

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Mon 10/20

6:25 am-4:05 pm

2 stops24h 10m

Colombo Bandaranaike Intl

Mon 10/27

4:00 pm-2:32 pm

2 stops32h 02m

$987

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Thu 9/4

6:57 pm-2:05 am

2 stops21h 38m

Colombo Bandaranaike Intl

Fri 9/19

4:35 am-8:55 pm

2 stops25h 50m

$1,161

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Fri 9/12

6:45 pm-4:55 am

2 stops24h 40m

Colombo Bandaranaike Intl

Fri 9/19

2:10 pm-8:59 am

2 stops28h 19m

$1,267

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Tue 9/16

8:40 pm-12:45 pm

2 stops30h 35m

Colombo Bandaranaike Intl

Sat 2/7

9:55 am-8:40 pm

2 stops45h 15m

$1,343

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Wed 9/17

8:59 am-11:35 pm

2 stops53h 06m

Colombo Bandaranaike Intl

Mon 2/9

12:45 am-8:55 pm

3 stops30h 40m

$1,574

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Tue 8/19

5:45 pm-3:05 am

2 stops23h 50m

$571

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Sat 8/23

9:40 am-4:55 am

3 stops33h 45m

$732

Washington, D.C.Colombo

DCA - CMB

DCACMB

Washington, D.C. Reagan-National

Thu 8/28

8:59 am-11:35 pm

3 stops53h 06m

$1,444

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Reagan-National to Sri Lanka

Have a flexible travel schedule? Discover the best time to fly to Sri Lanka from Reagan-National 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. Reagan-National Airport to Sri Lanka

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

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

Reviews of airlines servicing Sri Lanka

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Sri Lanka, such as Singapore Airlines, Qatar Airways, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very good

1,338 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Singapore Airlines

8.1

Very good

1,338 reviews

Singapore Airlines

8.1

Very good

1,338 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Qatar Airways

7.4

Good

3,609 reviews

Singapore Airlines

8.1

Very good

1,338 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Air Canada

7.1

Good

9,822 reviews

Singapore Airlines

8.1

Very good

1,338 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Air India

5.5

Fair

2,927 reviews

Singapore Airlines

8.1

Very good

1,338 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Jul 2025

DAD - SIN

Related info for your journey

Can I find deals for flights from Reagan-National to Sri Lanka that include hotel bookings?
Yes. In addition to deals on Reagan-National to Sri Lanka flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to Sri Lanka?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Sri Lanka.
Can I find deals for business class flights from Reagan-National to Sri Lanka?
Yes. Cheapflights offers flight deals from Reagan-National to Sri Lanka 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. Reagan-National Airport to Sri Lanka?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sri Lanka (average of $1,049). Flying from Washington, D.C. Reagan-National Airport to Sri Lanka in December is currently the most expensive (average of $1,788). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Reagan-National to Sri Lanka

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Dulles Intl to Singapore flights

Dulles Intl to Dhaka flights

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Reagan-National to Chennai flights

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$571+ Cheap flights from Reagan-National (DCA) to Sri Lanka

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Sri Lanka with Cheapflights

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3. Compare prices and book

Cheap flight deals from Reagan-National to Sri Lanka

Keep the following information in mind while searching for Reagan-National to Sri Lanka flight deals. Data was last updated July 29, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Reagan-National to Sri Lanka

Cheapest flights from Reagan-National to Sri LankaExplore the most affordable flight options available from Reagan-National to Sri Lanka. 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 Reagan-National to Sri Lanka. 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 Washington, D.C. Reagan-National Airport to Sri Lanka that are best for you.

Best time to book a flight from Reagan-National to Sri Lanka

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Sri Lanka

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

Find hourly flight availability from Reagan-National to Sri Lanka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Reviews of airlines servicing Sri Lanka

Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Sri Lanka, such as Singapore Airlines, Qatar Airways, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Sri Lanka. 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 Reagan-National to Sri Lanka that include hotel bookings?

How can I find direct flights from Reagan-National to Sri Lanka?

Can I find deals for business class flights from Reagan-National to Sri Lanka?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sri Lanka?

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 Reagan-National to Sri Lanka

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

100% Free

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Travel Smart

Cheapest flights from Reagan-National to Sri Lanka
Explore the most affordable flight options available from Reagan-National to Sri Lanka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.