Find flights
When to book
FAQs

Cheap flights from Seattle to Kolkata from ₹ 51,322

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
13 Sep — 20 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Kolkata

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Kolkata
Explore the most affordable flight options available from Seattle to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Fri 18/923:42 -
2 stops32h 18m
Sun 27/921:30 -
2 stops37h 37m
Deal found 11/8₹ 100,546
Mon 7/900:10 -
2 stops35h 10m
Wed 23/901:00 -
2 stops26h 45m
Deal found 13/8₹ 102,549
Mon 24/800:10 -
2 stops35h 10m
Wed 2/901:00 -
2 stops26h 45m
Deal found 13/8₹ 102,835
Wed 23/923:42 -
2 stops32h 18m
Sun 27/921:30 -
2 stops35h 44m
Deal found 13/8₹ 103,026
Mon 26/1000:10 -
2 stops35h 10m
Wed 2/1200:50 -
2 stops26h 35m
Deal found 14/8₹ 103,884
Wed 2/901:15 -
2 stops34h 05m
Fri 18/901:00 -
2 stops51h 40m
Deal found 12/8₹ 104,075
Sat 10/1023:55 -
2 stops32h 05m
Thu 12/1103:20 -
2 stops34h 45m
Deal found 12/8₹ 107,796
Wed 9/901:15 -
2 stops35h 00m
Wed 16/902:00 -
2 stops26h 40m
Deal found 12/8₹ 111,039
Tue 10/1100:10 -
2 stops26h 35m
Wed 16/1213:30 -
2 stops41h 30m
Deal found 13/8₹ 111,325
Fri 18/910:15 -
1 stop23h 50m
Sun 27/923:30 -
1 stop45h 45m
Deal found 10/8₹ 112,661
Mon 12/1016:30 -
2 stops42h 50m
Wed 11/1100:50 -
2 stops26h 00m
Deal found 10/8₹ 114,664
Fri 4/923:41 -
2 stops32h 19m
Fri 11/921:30 -
2 stops37h 37m
Deal found 12/8₹ 114,759

Find flight deals from Seattle to Kolkata

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 14 August 2026.

Round-trip from

₹ 100,546

One-way from

₹ 51,322

Popular in

December

Cheapest in

March

Average price

₹ 131,740
Etihad Airways
  • Etihad Airways
  • 18/9-27/9
  • 4 total stops
  • 69h 55m total
  • Seattle to Kolkata
Search Deals
12/10
  • 12/10
  • 2 total stops
  • 35h 10m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (₹ 1,260,327 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (₹ 523,070 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle 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 14 August 2026.
Use the filters below to find and compare flights from Seattle to Kolkata that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Tue 15/9

23:57-02:55

2 stops38h 28m

Kolkata Netaji S. Chandra

Fri 25/9

03:50-00:11

2 stops32h 51m

₹ 103,026

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Wed 23/9

23:42-20:30

2 stops32h 18m

Kolkata Netaji S. Chandra

Sun 27/9

21:30-20:44

2 stops35h 44m

₹ 103,026

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Sun 11/10

15:32-02:10

2 stops46h 08m

Kolkata Netaji S. Chandra

Mon 9/11

03:25-17:21

2 stops27h 26m

₹ 137,749

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Sat 10/10

06:39-02:10

2 stops31h 01m

Kolkata Netaji S. Chandra

Thu 12/11

03:25-21:44

2 stops31h 49m

₹ 140,420

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Wed 23/9

17:44-02:30

2 stops44h 16m

Kolkata Netaji S. Chandra

Sun 27/9

04:00-12:45

1 stop21h 15m

₹ 145,095

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Wed 2/12

21:07-01:55

2 stops39h 18m

Kolkata Netaji S. Chandra

Thu 21/1

03:25-11:40

1 stop21h 45m

₹ 155,207

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Mon 4/1

19:05-11:10

2 stops26h 35m

Kolkata Netaji S. Chandra

Sun 7/2

20:45-17:10

2 stops33h 55m

₹ 159,499
Fastest return journey

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Sun 6/12

06:00-01:55

2 stops30h 25m

Kolkata Netaji S. Chandra

Tue 22/12

03:25-11:40

1 stop21h 45m

₹ 168,180

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Mon 7/12

19:05-12:25

2 stops27h 50m

Kolkata Netaji S. Chandra

Fri 25/12

18:30-17:10

2 stops36h 10m

₹ 180,486

SeattleKolkata

SEA Seattle/Tacoma Intl - CCU Kolkata Netaji S. Chandra

SEACCU

Seattle/Tacoma Intl

Fri 4/12

19:05-15:45

2 stops31h 10m

Kolkata Netaji S. Chandra

Mon 28/12

22:30-17:10

2 stops32h 10m

₹ 185,733

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Seattle 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 Seattle to Kolkata

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

Booking 67 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Kolkata. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Kolkata (average of ₹ 87,954). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 170,947). 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 Seattle to Kolkata?

Airfare is below average for this route at the moment.

Seattle to Kolkata flights typically cost between ₹ 111,611 and ₹ 199,470 in September.
The cheapest return price found within the last 5 days was ₹ 100,546 on Etihad Airways (18 Sept–27 Sept).

Related info for your journey

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

    For as low as ₹ 103,026, Etihad Airways can have you in Kolkata from Seattle in 32h 18m. Airlines will cover a distance of 11626 km. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Seattle to Kolkata?

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Kolkata?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Kolkata (average of ₹ 87,954). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 170,947). 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 Seattle to Kolkata

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Kolkata flights
Spokane to Kolkata flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Seattle to Kolkata via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Kolkata for you. Better yet — we are completely free to use.

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

Certainly. Search results for flights to Kolkata from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Kolkata from Seattle today and book when prices fit your budget.

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.