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Cheap flights from Seattle to Kolkata from ₹ 46,546

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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
16 Dec — 23 Dec1
1 adult
1 adult, Economy, 0 bags

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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 16 November 2025.

Sat 15/1100:10SEA - CCU
2 stops35h 00mMultiple Airlines
Mon 1/1221:00CCU - SEA
3 stops35h 46mMultiple Airlines
Deal found 14/11₹ 108,873
Tue 18/1115:10SEA - CCU
3 stops34h 35mMultiple Airlines
Wed 24/1200:30CCU - SEA
3 stops35h 46mMultiple Airlines
Deal found 15/11₹ 109,493
Thu 4/1215:40SEA - CCU
2 stops43h 30mMultiple Airlines
Mon 15/1201:55CCU - SEA
2 stops24h 55mMultiple Airlines
Deal found 15/11₹ 110,380
Thu 27/1121:30SEA - CCU
2 stops37h 40mMultiple Airlines
Wed 24/1201:55CCU - SEA
2 stops30h 15mMultiple Airlines
Deal found 16/11₹ 111,799
Tue 18/1100:10SEA - CCU
3 stops34h 55mMultiple Airlines
Mon 8/1223:00CCU - SEA
3 stops33h 46mMultiple Airlines
Deal found 16/11₹ 114,547
Thu 4/1221:35SEA - CCU
2 stops32h 50mMultiple Airlines
Sun 14/1223:00CCU - SEA
3 stops36h 13mMultiple Airlines
Deal found 15/11₹ 116,852
Tue 18/1115:00SEA - CCU
2 stops28h 25mKLM
Thu 25/1221:30CCU - SEA
2 stops29h 25mKLM
Deal found 15/11₹ 118,093

Cheap 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 16 November 2025.

Round-trip from

₹ 62,150

One-way from

₹ 46,546

Popular in

December

Cheapest in

September

Average price

₹ 99,475
Singapore Airlines
  • Singapore Airlines
  • 3/3-8/4
  • 2 total stops
  • 45h 55m total
  • Seattle to Kolkata
Search Deals
4/12
  • 4/12
  • 2 total stops
  • 48h 20m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (₹ 1,391,196 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (₹ 512,925 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 16 November 2025.
Use the filters below to find and compare flights from Seattle to Kolkata that are best for you.

Fly from

Seattle

Fly to

Kolkata

Route

Depart

Return

Price

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 6/1

13:40-07:10

2 stops28h 00m

Kolkata Netaji S. Chandra

Tue 3/2

18:30-11:40

2 stops30h 40m

₹ 88,747

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 6/1

13:40-07:10

2 stops28h 00m

Kolkata Netaji S. Chandra

Wed 28/1

20:15-11:25

2 stops28h 40m

₹ 90,786

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 17/4

14:05-08:25

2 stops29h 50m

Kolkata Netaji S. Chandra

Mon 11/5

19:00-11:15

2 stops28h 45m

₹ 92,471

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 30/4

17:35-08:25

2 stops50h 20m

Kolkata Netaji S. Chandra

Mon 4/5

19:00-17:25

2 stops34h 55m

₹ 97,613

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 30/4

10:15-22:15

1 stop23h 30m

Kolkata Netaji S. Chandra

Mon 4/5

23:30-08:45

1 stop21h 45m

₹ 100,450

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/2

14:15-07:45

2 stops28h 00m

Kolkata Netaji S. Chandra

Sun 15/2

18:30-13:20

2 stops32h 20m

₹ 101,337

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 8/1

13:40-07:10

2 stops28h 00m

Kolkata Netaji S. Chandra

Tue 3/2

18:30-11:40

2 stops30h 40m

₹ 101,425

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 30/4

15:35-13:45

2 stops33h 40m

Kolkata Netaji S. Chandra

Sun 3/5

02:00-19:45

2 stops30h 15m

₹ 101,603

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/2

15:05-09:55

2 stops29h 20m

Kolkata Netaji S. Chandra

Sun 15/2

21:30-11:25

2 stops51h 25m

₹ 102,489

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 18/4

14:05-07:30

2 stops28h 55m

Kolkata Netaji S. Chandra

Sun 10/5

19:05-17:25

2 stops34h 50m

₹ 115,611

Flights are sorted by cheapest return flights first.

Deals found on 14/11

Showing 1-10 of 17 results
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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?

Use this chart to determine the optimal time to book a return flight from Seattle to Kolkata. Price data was last updated on 14 November 2025.

Booking 55 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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of ₹ 51,954). Flying from Seattle to Kolkata in June is currently the most expensive (average of ₹ 96,727). 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.

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 ₹ 100,450, KLM can have you in Kolkata from Seattle in 23h 30m. 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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of ₹ 51,954). Flying from Seattle to Kolkata in June is currently the most expensive (average of ₹ 96,727). 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

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Alternative routes for Seattle to Kolkata

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

Fly with Cheapflights

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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.

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