How long is the flight from Boston to Kolkata?

Etihad Airways can get you from Boston to Kolkata in just under 18h 35m. Your travel time can differ by up to . The distance from Boston to Kolkata is about 12476 km.

In terms of precipitation, rainfall in Kolkata ranges from 7.0 - 356.0 inches per month. August is typically the wettest month, when rainfall can reach 356.0 mm. December is typically the driest time to visit Kolkata when rainfall is around 7.0 mm.

If weather is an important factor for your trip to Kolkata, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 31.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

What is the cheapest time of day to fly from BOS to CCU?

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

Can I find deals for flights from Boston to Kolkata that include hotel bookings?

Yes. In addition to deals on Boston to Kolkata flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Boston to Kolkata?

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

Can I find deals for business class flights from Boston to Kolkata?

Yes. Cheapflights offers flight deals from Boston to Kolkata by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

₹ 39,801+ Cheap Flights from Boston to Kolkata

Cheap flight deals from Boston to Kolkata

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Boston to Kolkata
Explore the most affordable flight options available from Boston to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Wed 30/916:25 -

1 stop25h 00m

Wed 7/1021:30 -

1 stop26h 40m

Deal found 10/9₹ 77,694

Tue 22/916:25 -

1 stop18h 35m

Wed 7/1021:30 -

1 stop26h 40m

Deal found 6/9₹ 77,885

Thu 12/1115:40 -

1 stop17h 45m

Mon 7/1203:20 -

1 stop21h 20m

Deal found 10/9₹ 78,171

Sun 27/916:25 -

1 stop25h 00m

Mon 5/1003:50 -

1 stop20h 20m

Deal found 10/9₹ 78,839

Sun 27/916:25 -

1 stop25h 00m

Fri 2/1003:50 -

1 stop20h 20m

Deal found 10/9₹ 79,508

Thu 1/1016:25 -

1 stop18h 35m

Wed 7/1021:30 -

1 stop26h 40m

Deal found 10/9₹ 79,794

Tue 29/916:25 -

1 stop18h 35m

Thu 1/1003:50 -

1 stop20h 20m

Deal found 10/9₹ 80,176

Wed 30/1215:40 -

1 stop24h 15m

Thu 21/103:20 -

1 stop21h 20m

Deal found 6/9₹ 80,271

Thu 24/916:25 -

1 stop18h 35m

Mon 28/921:30 -

1 stop26h 40m

Deal found 10/9₹ 81,130

Fri 25/916:25 -

1 stop25h 00m

Thu 8/1003:50 -

1 stop20h 20m

Deal found 8/9₹ 81,512

Find flight deals from Boston to Kolkata

Round-trip from	₹ 77,694
One-way from	₹ 39,801
Popular in	December
Cheapest in	September
Average price	₹ 84,471

Etihad Airways
30/9-5/10
2 total stops
45h 20m total
Boston to Kolkata

Search Deals

Etihad Airways
17/9-31/12
1 total stop
24h 50m total
Boston to Kolkata

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (₹ 655,829 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (₹ 333,576 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Mon 12/10

16:25-01:45

2 stops23h 50m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 48,487

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Sat 26/9

18:40-00:10

2 stops44h 00m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 52,305

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Mon 26/10

16:40-09:25

2 stops31h 15m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 53,164

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Fri 23/10

16:25-13:10

3 stops35h 15m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 56,123

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Sun 15/11

20:00-12:50

2 stops30h 20m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 56,887

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Fri 13/11

20:00-15:20

2 stops32h 50m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 63,759

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Thu 22/10

17:10-10:30

2 stops31h 50m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 65,381

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Wed 7/10

21:15-16:55

3 stops34h 10m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 78,267

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Thu 24/9

16:25-20:30

1 stop18h 35m

Kolkata Netaji S. Chandra

Mon 28/9

21:30-14:40

1 stop26h 40m

₹ 81,130

Fastest return journey

BostonKolkata

BOS Boston Logan Intl - CCU Kolkata Netaji S. Chandra

BOSCCU

Boston Logan Intl

Sun 25/10

21:40-01:55

1 stop18h 45m

Kolkata Netaji S. Chandra

Wed 31/12

00:00-13:30

Nonstop0h 00m

₹ 83,516

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 20 resultsSorted by cheapest first

Best time to book a flight from Boston to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Boston with our price prediction graph.

BOS-CCU

Estimated return 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 Kolkata

How far ahead should I book a flight from Boston to Kolkata?

The best time to book flights from Boston to Kolkata is 66 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 Boston to Kolkata?

Currently, September is the cheapest month in which you can book a flight from Boston to Kolkata (average of ₹ 84,471). Flying from Boston to Kolkata in December is currently the most expensive (average of ₹ 157,011). 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.

How much does it cost for a return flight from Boston to Kolkata?

Airfare is below average for this route at the moment.

Boston to Kolkata flights typically cost between ₹ 82,371 and ₹ 92,584 in September.
The cheapest return price found within the last 5 days was ₹ 77,694 on Etihad Airways (30 Sept–7 Oct).

Related info for your journey

How long is the flight from Boston to Kolkata?
Etihad Airways can get you from Boston to Kolkata in just under 18h 35m. Your travel time can differ by up to . The distance from Boston to Kolkata is about 12476 km.
Can I find deals for flights from Boston to Kolkata that include hotel bookings?
Yes. In addition to deals on Boston to Kolkata flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Boston to Kolkata?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Kolkata.
Can I find deals for business class flights from Boston to Kolkata?
Yes. Cheapflights offers flight deals from Boston to Kolkata 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 Kolkata?
Currently, September is the cheapest month in which you can book a flight from Boston to Kolkata (average of ₹ 84,471). Flying from Boston to Kolkata in December is currently the most expensive (average of ₹ 157,011). 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

Complete your trip

Direct flights to West Bengal

Flights by cabin class

Kolkata flight routes

Other flight options

Popular flights

Alternative routes for Boston to Kolkata

Boston to Bagdogra flights

Worcester to Kolkata flights

Fly with Cheapflights

How does Cheapflights help users find flights from Boston to Kolkata?

Cheapflights makes it easy to find Boston to Kolkata flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Boston to Kolkata?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Kolkata.

Can Cheapflights find flights from Boston to Kolkata with no change fees?

Need flexible booking options for your flight to Kolkata from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Boston to Kolkata become cheaper?

Of course! You can now track prices for flights from Boston to Kolkata and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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.

Cheap flights from Boston to Kolkata from ₹ 39,801

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to Kolkata

Cheapest flights from Boston to KolkataExplore the most affordable flight options available from Boston to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Explore the most affordable flight options available from Boston to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Boston to KolkataDiscover carefully curated flight deals from Boston to Kolkata that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Boston to Kolkata that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Boston to KolkataDiscover last-minute flight deals from Boston to Kolkata. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Kolkata. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Boston to KolkataSearch for one-way flight options from Boston to Kolkata. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from Boston to Kolkata. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Find flight deals from Boston to Kolkata

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to Kolkata that are best for you.

Best time to book a flight from Boston to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Boston with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from Boston to Kolkata?

The best time to book flights from Boston to Kolkata is 66 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 Boston to Kolkata?

How much does it cost for a return flight from Boston to Kolkata?

Airfare is below average for this route at the moment.

Boston to Kolkata flights typically cost between ₹ 82,371 and ₹ 92,584 in September.The cheapest return price found within the last 5 days was ₹ 77,694 on Etihad Airways (30 Sept–7 Oct).

Related info for your journey

How long is the flight from Boston to Kolkata?

Can I find deals for flights from Boston to Kolkata that include hotel bookings?

How can I find direct flights from Boston to Kolkata?

Can I find deals for business class flights from Boston to Kolkata?

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

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 Kolkata

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

Complete your trip

Complete your trip to Kolkata by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to West Bengal

Book a non-stop flight to one of these other cities located in West Bengal.

Search flights from Boston to Kolkata by cabin class

Find flights from Boston to Kolkata, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Kolkata

Explore flights to Kolkata departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 11 September 2026.

Boston and Kolkata flights

Browse other Boston and Kolkata flight options. Last updated on 11 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from Boston to Kolkata?

Why should you use Cheapflights to find cheap flight tickets from Boston to Kolkata?

Can Cheapflights find flights from Boston to Kolkata with no change fees?

Can Cheapflights notify me if prices for flights from Boston to Kolkata become cheaper?

100% Free

Book With Flexibility

Travel Smart

Cheapest flights from Boston to Kolkata
Explore the most affordable flight options available from Boston to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Boston to Kolkata
Discover carefully curated flight deals from Boston to Kolkata that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Boston to Kolkata
Discover last-minute flight deals from Boston to Kolkata. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Boston to Kolkata
Search for one-way flight options from Boston to Kolkata. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Boston to Kolkata flights typically cost between ₹ 82,371 and ₹ 92,584 in September.
The cheapest return price found within the last 5 days was ₹ 77,694 on Etihad Airways (30 Sept–7 Oct).