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Cheap flights from Boston to Kolkata from ₹ 41,635

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CCU
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Kolkata

Enter your travel dates to find the best prices.

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 29 July 2026.

Thu 17/916:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Wed 30/921:30
CCU
-
BOS
1 stop26h 40m
Etihad Airways
Deal found 24/7₹ 73,125
Thu 27/816:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Fri 11/921:30
CCU
-
BOS
1 stop26h 10m
Etihad Airways
Deal found 26/7₹ 75,422
Sun 6/916:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Mon 14/921:30
CCU
-
BOS
1 stop26h 10m
Etihad Airways
Deal found 26/7₹ 75,613
Thu 27/816:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Thu 24/903:50
CCU
-
BOS
1 stop19h 50m
Etihad Airways
Deal found 27/7₹ 80,590
Tue 25/816:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Wed 9/921:30
CCU
-
BOS
1 stop26h 10m
Etihad Airways
Deal found 25/7₹ 81,834
Thu 8/1016:25
BOS
-
CCU
1 stop25h 00m
Etihad Airways
Mon 2/1103:20
CCU
-
BOS
1 stop21h 20m
Etihad Airways
Deal found 28/7₹ 83,557
Sun 23/816:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Thu 24/903:50
CCU
-
BOS
1 stop19h 50m
Etihad Airways
Deal found 27/7₹ 83,749
Sun 6/916:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Mon 5/1021:30
CCU
-
BOS
1 stop26h 40m
Etihad Airways
Deal found 27/7₹ 84,132
Sat 29/816:40
BOS
-
CCU
1 stop18h 20m
Etihad Airways
Thu 24/903:50
CCU
-
BOS
1 stop19h 50m
Etihad Airways
Deal found 27/7₹ 84,419
Mon 24/822:00
BOS
-
CCU
1 stop19h 00m
Qatar Airways
Fri 25/904:00
CCU
-
BOS
1 stop20h 45m
Qatar Airways
Deal found 27/7₹ 84,610
Tue 25/808:41
BOS
-
CCU
2 stops26h 19m
Etihad Airways
Fri 25/921:30
CCU
-
BOS
1 stop26h 10m
Etihad Airways
Deal found 28/7₹ 85,567
Wed 26/808:41
BOS
-
CCU
2 stops32h 44m
Etihad Airways
Thu 24/903:50
CCU
-
BOS
1 stop19h 50m
Etihad Airways
Deal found 27/7₹ 85,663

Find flight deals from Boston to Kolkata

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Kolkata (CCU). 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 29 July 2026.

Round-trip from

₹ 73,125

One-way from

₹ 41,635

Popular in

December

Cheapest in

September

Average price

₹ 134,764
Etihad Airways
  • Etihad Airways
  • 17/9-30/9
  • 2 total stops
  • 45h 00m total
  • Boston to Kolkata
Search Deals
9/8
  • 9/8
  • 2 total stops
  • 23h 35m total
  • Boston to Kolkata
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (₹ 683,175 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 358,755 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Boston to Kolkata 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 454,620 searches. Data last updated 29 July 2026.
Use the filters below to find and compare flights from Boston to Kolkata that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Tue 13/10

16:25-20:30

1 stop18h 35m

Kolkata Netaji S. Chandra

Fri 23/10

03:50-14:40

1 stop20h 20m

₹ 93,511

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Sun 15/11

20:00-15:45

2 stops33h 15m

Kolkata Netaji S. Chandra

Fri 27/11

21:30-18:05

2 stops31h 05m

₹ 101,934

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Wed 23/9

21:50-15:30

2 stops32h 10m

Kolkata Netaji S. Chandra

Sun 27/9

21:00-19:55

2 stops32h 25m

₹ 101,934

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Tue 13/10

21:50-10:45

2 stops27h 25m

Kolkata Netaji S. Chandra

Mon 19/10

21:40-19:55

2 stops31h 45m

₹ 106,720

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Tue 13/10

21:50-10:45

2 stops27h 25m

Kolkata Netaji S. Chandra

Thu 5/11

18:30-19:05

2 stops35h 05m

₹ 106,720

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Sat 17/10

21:50-12:30

2 stops29h 10m

Kolkata Netaji S. Chandra

Thu 5/11

20:45-19:05

2 stops32h 50m

₹ 106,720

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Sat 29/8

08:41-20:30

2 stops26h 19m

Kolkata Netaji S. Chandra

Mon 28/9

21:30-14:10

1 stop26h 10m

₹ 108,443

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Sat 29/8

08:41-20:30

2 stops26h 19m

Kolkata Netaji S. Chandra

Mon 21/9

03:50-14:10

1 stop19h 50m

₹ 108,443

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Tue 13/10

21:50-10:45

2 stops27h 25m

Kolkata Netaji S. Chandra

Sat 24/10

22:30-19:05

2 stops30h 05m

₹ 108,634

BostonKolkata

BOS - CCU

BOSCCU

Boston Logan Intl

Sat 17/10

18:40-02:30

2 stops22h 20m

Kolkata Netaji S. Chandra

Sun 1/11

03:25-13:55

1 stop21h 00m

₹ 108,730

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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.
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 ₹ 86,907). Flying from Boston to Kolkata in December is currently the most expensive (average of ₹ 161,563). 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.

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 ₹ 91,980 and ₹ 141,081 in September.
The cheapest return price found within the last 5 days was ₹ 73,125 on Etihad Airways (17 Sept–30 Sept).

Related info for your journey

Find useful and relevant information for your journey from Boston to Kolkata. 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 Boston to Kolkata?

    Etihad Airways and Turkish Airlines can get you from Boston to Kolkata in just under 18h 35m. Your travel time can differ by up to 13h 35m. The distance from Boston to Kolkata is about 12476 km. This flight may include one or multiple stops.

  • 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 ₹ 86,907). Flying from Boston to Kolkata in December is currently the most expensive (average of ₹ 161,563). 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

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Alternative routes for Boston to Kolkata

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

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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.

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