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Cheap flights from Seattle to Kolkata from ₹ 52,858

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
10 Jul — 17 Jul1
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 10 June 2026.

Wed 18/1108:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Fri 25/1223:40
CCU
-
SEA
1 stop21h 00m
Singapore Airlines
Deal found 7/6₹ 93,980
Wed 18/1108:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Wed 23/1223:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 7/6₹ 99,704
Fri 13/1108:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Sun 20/1223:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 9/6₹ 99,800
Sat 17/1010:15
SEA
-
CCU
1 stop23h 50m
Singapore Airlines
Sat 7/1123:40
CCU
-
SEA
1 stop21h 00m
Singapore Airlines
Deal found 7/6₹ 104,093
Tue 29/1208:45
SEA
-
CCU
1 stop24h 10m
Multiple Airlines
Wed 3/223:40
CCU
-
SEA
2 stops27h 28m
Multiple Airlines
Deal found 7/6₹ 104,284
Fri 18/923:55
SEA
-
CCU
2 stops32h 05m
Etihad Airways
Mon 21/903:50
CCU
-
SEA
2 stops53h 22m
Etihad Airways
Deal found 7/6₹ 105,524
Tue 29/1208:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Wed 3/223:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 7/6₹ 107,814

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 10 June 2026.

Round-trip from

₹ 93,980

One-way from

₹ 52,858

Popular in

December

Cheapest in

September

Average price

₹ 102,280
Singapore Airlines
  • Singapore Airlines
  • 18/11-25/12
  • 2 total stops
  • 45h 10m total
  • Seattle to Kolkata
Search Deals
14/9
  • 14/9
  • 2 total stops
  • 29h 10m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (₹ 1,687,033 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (₹ 658,829 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
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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 10 June 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 - CCU

SEACCU

Seattle/Tacoma Intl

Fri 18/9

23:55-20:30

2 stops32h 05m

Kolkata Netaji S. Chandra

Mon 21/9

03:50-20:42

2 stops53h 22m

₹ 105,524

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 18/11

19:05-16:50

2 stops32h 15m

Kolkata Netaji S. Chandra

Thu 24/12

00:30-17:10

2 stops30h 10m

₹ 122,507

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 20/11

19:05-16:50

2 stops32h 15m

Kolkata Netaji S. Chandra

Thu 24/12

00:30-17:10

2 stops30h 10m

₹ 125,370

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 20/11

19:05-00:35

2 stops40h 00m

Kolkata Netaji S. Chandra

Fri 25/12

00:30-17:10

2 stops30h 10m

₹ 125,847

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 9/7

23:46-02:55

2 stops38h 39m

Kolkata Netaji S. Chandra

Fri 24/7

03:50-00:52

2 stops33h 32m

₹ 128,423

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 15/10

18:55-22:35

2 stops39h 10m

Kolkata Netaji S. Chandra

Sat 31/10

23:40-08:10

1 stop21h 00m

₹ 131,571

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 18/9

10:15-22:35

1 stop23h 50m

Kolkata Netaji S. Chandra

Tue 22/9

17:40-08:45

2 stops51h 35m

₹ 137,201

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 14/10

14:05-02:30

2 stops47h 55m

Kolkata Netaji S. Chandra

Sun 25/10

03:25-18:33

2 stops27h 38m

₹ 141,303
Fastest return journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 19/11

08:45-22:25

1 stop24h 10m

Kolkata Netaji S. Chandra

Fri 25/12

23:40-07:10

1 stop21h 00m

₹ 148,650
Cheapest one-way
Fastest single journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 4/8

16:25-02:30

1 stop21h 35m

₹ 57,151

Flights are sorted by cheapest return flights first.

Deals found on 5/6

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of ₹ 75,374). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 181,471). 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?

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 ₹ 93,980, Singapore Airlines can have you in Kolkata from Seattle in 24h 10m. 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 ₹ 75,374). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 181,471). 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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