HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sri Lanka

$474+ Cheap flights from Boston (BOS) 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — 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 Boston to Sri Lanka 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.

Cheap flight deals from Boston to Sri Lanka

Keep the following information in mind while searching for Boston to Sri Lanka flight deals. Data was last updated September 15, 2025.

Round-trip from

$811
(FlightHub)

One-way from

$474
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$892
From Boston Logan Intl to Sri Lanka
Search Deals
One-way flight from Boston Logan Intl to Sri Lanka
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Boston to Sri Lanka

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

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/141:40 amBOS - CMB
1 stop36h 20mCathay Pacific
Tue 9/3012:50 amCMB - BOS
1 stop31h 40mCathay Pacific
Deal found 9/14$810
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.
Sat 9/201:40 amBOS - CMB
1 stop36h 20mCathay Pacific
Tue 10/1412:50 amCMB - BOS
1 stop31h 40mCathay Pacific
Deal found 9/14$811
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:30 amBOS - CMB
1 stop36h 30mCathay Pacific
Tue 11/2512:45 amCMB - BOS
1 stop31h 45mCathay Pacific
Deal found 9/14$826
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:30 amBOS - CMB
1 stop36h 30mCathay Pacific
Tue 11/2512:45 amCMB - BOS
1 stop31h 45mCathay Pacific
Deal found 9/15$831
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:40 amBOS - CMB
1 stop36h 20mCathay Pacific
Tue 9/3012:50 amCMB - BOS
1 stop31h 40mCathay Pacific
Deal found 9/15$834
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.
Sat 9/204:30 pmBOS - CMB
1 stop18h 35mEtihad Airways
Thu 9/254:05 amCMB - BOS
1 stop20h 20mEtihad Airways
Deal found 9/14$840
This CrystalTravel 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/214:30 pmBOS - CMB
1 stop30h 30mEtihad Airways
Mon 10/134:05 amCMB - BOS
1 stop20h 20mEtihad Airways
Deal found 9/15$858
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:30 pmBOS - CMB
1 stop30h 30mEtihad Airways
Wed 10/14:05 amCMB - BOS
1 stop20h 20mEtihad Airways
Deal found 9/14$891
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 11/203:40 pmBOS - CMB
1 stop18h 10mEtihad Airways
Tue 11/254:00 amCMB - BOS
1 stop20h 40mEtihad Airways
Deal found 9/14$903
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/194:30 pmBOS - CMB
1 stop18h 35mEtihad Airways
Sun 3/159:50 amCMB - BOS
1 stop38h 50mEtihad Airways
Deal found 9/13$909
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.
Sun 9/219:35 pmBOS - CMB
2 stops25h 40mIndiGo
Mon 10/139:55 pmCMB - BOS
2 stops31h 15mIndiGo
Deal found 9/14$916

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Sri Lanka 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 Boston to Sri Lanka that are best for you.

Fly from

Boston

Fly to

Sri Lanka

Route

Depart

Return

Price

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Wed 11/19

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Sat 11/22

12:45 am-10:00 pm

1 stop31h 45m

$831

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Wed 11/19

3:40 pm-2:50 am

1 stop24h 40m

Colombo Bandaranaike Intl

Wed 11/26

4:00 am-2:10 pm

1 stop20h 40m

$979

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Fri 11/14

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Mon 11/24

12:45 am-10:00 pm

1 stop31h 45m

$997

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Thu 11/13

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Mon 11/24

12:45 am-10:00 pm

1 stop31h 45m

$997

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Sat 11/8

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Wed 11/12

12:45 am-10:00 pm

1 stop31h 45m

$997

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Wed 11/19

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Sun 11/23

12:45 am-10:00 pm

1 stop31h 45m

$997

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Sun 11/9

8:45 pm-2:45 am

1 stop19h 30m

Colombo Bandaranaike Intl

Thu 11/13

7:30 pm-1:55 pm

1 stop28h 55m

$1,176

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Sun 11/9

9:05 pm-2:45 am

1 stop19h 10m

Colombo Bandaranaike Intl

Wed 11/12

4:15 am-1:55 pm

1 stop20h 10m

$1,176

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Mon 11/17

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Sat 11/29

12:45 am-8:23 pm

2 stops30h 08m

$1,500

BostonColombo

BOS - CMB

BOSCMB

Boston Logan Intl

Wed 11/19

12:30 am-11:30 pm

1 stop36h 30m

Colombo Bandaranaike Intl

Sat 11/29

12:45 am-4:08 am

2 stops37h 53m

$1,500

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 19 results
1
2

Best time to book a flight from Boston to Sri Lanka

Have a flexible travel schedule? Discover the best time to fly to Sri Lanka from Boston 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 Boston to Sri Lanka

What is the cheapest month to book a flight from Boston to Sri Lanka?

Currently, September is the cheapest month in which you can book a flight from Boston to Sri Lanka (average of $1,028). Flying from Boston to Sri Lanka 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 BOS to LK?

Find hourly flight availability from Boston 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 September 15, 2025.

When flying from Boston to Sri Lanka, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Sri Lanka

Get insights into the airlines that provide service to Sri Lanka. 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 Sri Lanka. Reviews last updated September 15, 2025.
Read reviews from past customers who have flown Cathay Pacific, Qatar Airways, and Etihad Airways from Boston to Sri Lanka. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
993 reviews

Entertainment

7.8

Boarding

7.9

Crew

8.1

Food

7.3

Overall

7.6

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Cathay Pacific
7.6
Good
993 reviews
Cathay Pacific
7.6
Good
993 reviews

Entertainment

7.8

Boarding

7.9

Crew

8.1

Food

7.3

Overall

7.6

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Qatar Airways
7.4
Good
3,624 reviews
Cathay Pacific
7.6
Good
993 reviews

Entertainment

7.8

Boarding

7.9

Crew

8.1

Food

7.3

Overall

7.6

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Etihad Airways
7.4
Good
1,250 reviews
Cathay Pacific
7.6
Good
993 reviews

Entertainment

7.8

Boarding

7.9

Crew

8.1

Food

7.3

Overall

7.6

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
British Airways
6.7
Okay
7,361 reviews
Cathay Pacific
7.6
Good
993 reviews

Entertainment

7.8

Boarding

7.9

Crew

8.1

Food

7.3

Overall

7.6

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Related info for your journey

Find useful and relevant information for your journey from Boston to Sri Lanka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Sri Lanka?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Boston to Sri Lanka.

  • How long is the flight from Boston to Sri Lanka?

    Cathay Pacific, Etihad Airways, and Qatar Airways can get you from Boston to Sri Lanka in just under 18h 10m. Your travel time can differ by up to 18h 20m. The distance between Boston and Sri Lanka is about 8548 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Sri Lanka that include hotel bookings?

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

  • How can I find direct flights from Boston to Sri Lanka?

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

  • Can I find deals for business class flights from Boston to Sri Lanka?

    Yes. Cheapflights offers flight deals from Boston 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 Boston to Sri Lanka?

    Currently, September is the cheapest month in which you can book a flight from Boston to Sri Lanka (average of $1,028). Flying from Boston to Sri Lanka 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

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 Boston to Sri Lanka

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Narita flights
Boston to Haneda flights
Boston to Suvarnabhumi flights
Boston to New Delhi flights
Boston to Mumbai flights
Boston to Incheon Intl flights
Boston to Tbilisi flights
Boston to Hongqiao Intl flights
Boston to Taiwan Taoyuan Intl flights
Boston to Ho Chi Minh City flights
Boston to Pu Dong flights
Boston to Capital flights
Boston to Ahmedabad flights
Boston to Manila flights
Boston to Bangalore flights
Boston to Sung Shan flights
Boston to Beijing Daxing Intl flights
Boston to Hyderabad flights
Boston to Chennai flights
Boston to Guangzhou flights
Boston to Hanoi flights
Boston to Kathmandu flights
Hartford to Narita flights
Boston to Chengdu flights
Boston to Singapore flights
Hartford to Haneda flights
Boston to Lahore flights
Boston to Hong Kong flights
Boston to Shenzhen flights
Boston to Gimpo Intl flights
Boston to Denpasar flights
Boston to Kansai Intl flights
Boston to Kolkata flights
Boston to Cochin flights
Boston to Itami flights
Boston to Don Mueang Intl flights
Boston to Kuala Lumpur Intl flights
Boston to Phuket City flights
Boston to Malé flights
Boston to Dhaka flights
Boston to Phnom Penh flights
Boston to Soekarno-Hatta Intl flights
Boston to Da Nang flights
Boston to Kobe flights
Boston to Karachi flights
Boston to Cebu City flights
Hartford to Suvarnabhumi flights
Boston to Colombo flights
Albany to Narita flights
Boston to Nanjing flights

Top 4 airlines flying from Boston to Sri Lanka

Discover the top 4 airlines that operate flights from Boston to Sri Lanka. 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
Cathay PacificCheapest$747Average$790FlexibilityNo cancel feeOn-time72%
Etihad AirwaysCheapest$854Average$1,156FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$919Average$1,195FlexibilityNo cancel feeOn-time68%
British AirwaysCheapest$2,502Average$2,776FlexibilityNo cancel feeOn-time70%

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.