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Cheap flights from Seattle to Kolkata from ₹ 29,296

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
31 Jan — 7 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Kolkata

Enter your travel dates to find the best prices.

Best flights from Seattle to Kolkata
Discover carefully curated flight deals from Seattle to Kolkata that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Fri 24/410:15SEA - CCU
1 stop23h 30mSingapore Airlines
Sat 9/523:40CCU - SEA
1 stop21h 35mSingapore Airlines
Deal found 31/12₹ 80,609
Fri 24/421:24SEA - CCU
2 stops36h 21mMultiple Airlines
Sat 9/523:40CCU - SEA
1 stop21h 35mMultiple Airlines
Deal found 31/12₹ 81,328
Sun 11/119:00SEA - CCU
2 stops27h 55mTurkish Airlines
Fri 23/122:30CCU - SEA
2 stops32h 05mTurkish Airlines
Deal found 31/12₹ 103,795
Wed 28/114:10SEA - CCU
2 stops30h 25mMultiple Airlines
Wed 4/221:30CCU - SEA
2 stops27h 25mMultiple Airlines
Deal found 31/12₹ 86,720
Wed 4/208:25SEA - CCU
3 stops34h 45mMultiple Airlines
Mon 16/223:00CCU - SEA
3 stops35h 17mMultiple Airlines
Deal found 31/12₹ 87,619
Mon 16/320:00SEA - CCU
2 stops31h 15mTurkish Airlines
Fri 20/321:30CCU - SEA
2 stops33h 05mTurkish Airlines
Deal found 30/12₹ 108,647
Wed 4/214:15SEA - CCU
2 stops28h 00mMultiple Airlines
Sun 15/218:30CCU - SEA
2 stops30h 40mMultiple Airlines
Deal found 31/12₹ 105,592

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 1 January 2026.

Round-trip from

₹ 80,609

One-way from

₹ 29,296

Popular in

December

Cheapest in

September

Average price

₹ 87,529
Singapore Airlines
  • Singapore Airlines
  • 24/4-9/5
  • 2 total stops
  • 45h 05m total
  • Seattle to Kolkata
Search Deals
Singapore Airlines
  • Singapore Airlines
  • 10/3
  • 1 total stop
  • 24h 10m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (₹ 804,077 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (₹ 386,011 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 1 January 2026.
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

Fri 24/4

10:15-22:15

1 stop23h 30m

Kolkata Netaji S. Chandra

Sat 9/5

23:40-08:45

1 stop21h 35m

₹ 80,609

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 24/4

21:24-22:15

2 stops36h 21m

Kolkata Netaji S. Chandra

Sat 9/5

23:40-08:45

1 stop21h 35m

₹ 81,328

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 28/1

14:10-10:05

2 stops30h 25m

Kolkata Netaji S. Chandra

Wed 4/2

21:30-11:25

2 stops27h 25m

₹ 86,720

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/2

08:25-08:40

3 stops34h 45m

Kolkata Netaji S. Chandra

Mon 16/2

23:00-20:47

3 stops35h 17m

₹ 87,619

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 11/1

19:00-12:25

2 stops27h 55m

Kolkata Netaji S. Chandra

Fri 23/1

22:30-17:05

2 stops32h 05m

₹ 103,795

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/2

14:15-07:45

2 stops28h 00m

Kolkata Netaji S. Chandra

Sun 15/2

18:30-11:40

2 stops30h 40m

₹ 105,592

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 16/3

20:00-15:45

2 stops31h 15m

Kolkata Netaji S. Chandra

Fri 20/3

21:30-18:05

2 stops33h 05m

₹ 108,647

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 10/3

09:45-22:25

1 stop24h 10m

₹ 29,296

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 24/3

10:44-04:40

2 stops29h 26m

₹ 40,260

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 10/3

10:53-04:40

2 stops29h 17m

₹ 40,260

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 14 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 26 December 2025.

Booking 89 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 ₹ 52,661). Flying from Seattle to Kolkata in June is currently the most expensive (average of ₹ 98,043). 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 ₹ 80,609, Singapore Airlines can have you in Kolkata from Seattle in 23h 30m. Airlines will cover a distance of 11626 km.

  • 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 ₹ 52,661). Flying from Seattle to Kolkata in June is currently the most expensive (average of ₹ 98,043). 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.
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.

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