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Cheap flights from Seattle to Kolkata from ₹ 41,657

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
6 Jun — 13 Jun1
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 7 May 2026.

Thu 12/1108:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Fri 11/1223:40
CCU
-
SEA
1 stop21h 00m
Singapore Airlines
Deal found 4/5₹ 96,094
Sun 1/1108:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Tue 8/1223:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 6/5₹ 103,479
Thu 12/1108:45
SEA
-
CCU
1 stop24h 10m
Multiple Airlines
Fri 11/1223:40
CCU
-
SEA
2 stops30h 46m
Multiple Airlines
Deal found 4/5₹ 104,994
Sun 1/1108:45
SEA
-
CCU
1 stop24h 10m
Multiple Airlines
Tue 8/1223:40
CCU
-
SEA
2 stops27h 28m
Multiple Airlines
Deal found 6/5₹ 105,089
Fri 20/1119:00
SEA
-
CCU
2 stops36h 45m
Multiple Airlines
Sat 19/1200:30
CCU
-
SEA
2 stops30h 05m
Multiple Airlines
Deal found 5/5₹ 108,497
Thu 15/1010:15
SEA
-
CCU
1 stop23h 30m
Singapore Airlines
Tue 27/1023:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 3/5₹ 109,538
Wed 30/916:25
SEA
-
CCU
2 stops44h 50m
Multiple Airlines
Sun 31/119:30
CCU
-
SEA
2 stops53h 40m
Multiple Airlines
Deal found 7/5₹ 109,917
Wed 7/1019:10
SEA
-
CCU
2 stops42h 05m
Multiple Airlines
Sun 31/119:30
CCU
-
SEA
2 stops35h 05m
Multiple Airlines
Deal found 3/5₹ 110,864
Fri 20/1119:00
SEA
-
CCU
2 stops35h 45m
Multiple Airlines
Fri 25/1222:00
CCU
-
SEA
2 stops32h 35m
Multiple Airlines
Deal found 3/5₹ 111,053
Sat 21/1119:00
SEA
-
CCU
2 stops38h 45m
Multiple Airlines
Fri 25/1200:30
CCU
-
SEA
2 stops30h 05m
Multiple Airlines
Deal found 4/5₹ 111,148
Thu 15/1010:15
SEA
-
CCU
1 stop23h 30m
Multiple Airlines
Tue 27/1023:40
CCU
-
SEA
2 stops31h 23m
Multiple Airlines
Deal found 3/5₹ 111,432

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 7 May 2026.

Round-trip from

₹ 103,479

One-way from

₹ 41,657

Popular in

December

Cheapest in

September

Average price

₹ 104,710
Singapore Airlines
  • Singapore Airlines
  • 1/11-8/12
  • 2 total stops
  • 69h 10m total
  • Seattle to Kolkata
Search Deals
Singapore Airlines
  • Singapore Airlines
  • 23/8
  • 1 total stop
  • 23h 50m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (₹ 1,239,096 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (₹ 544,285 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 7 May 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

Thu 17/9

10:15-22:35

1 stop23h 50m

Kolkata Netaji S. Chandra

Mon 21/9

23:30-08:45

1 stop21h 45m

₹ 122,887
Fastest return journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 1/7

16:25-02:30

1 stop21h 35m

Kolkata Netaji S. Chandra

Tue 4/8

04:00-12:25

1 stop20h 55m

₹ 124,781

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 17/6

08:53-02:30

2 stops29h 07m

Kolkata Netaji S. Chandra

Sat 11/7

04:00-18:00

2 stops26h 30m

₹ 126,864

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

23:55-03:00

2 stops38h 35m

Kolkata Netaji S. Chandra

Mon 21/9

21:30-20:42

2 stops35h 42m

₹ 127,432

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 12/6

18:50-05:30

2 stops46h 10m

Kolkata Netaji S. Chandra

Sat 27/6

19:00-11:37

2 stops29h 07m

₹ 128,568

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

19:10-12:50

2 stops29h 10m

Kolkata Netaji S. Chandra

Mon 21/9

22:30-17:15

2 stops31h 15m

₹ 135,668

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 7/10

18:55-22:15

2 stops38h 50m

Kolkata Netaji S. Chandra

Sun 31/1

23:40-20:31

3 stops34h 21m

₹ 143,905
Cheapest one-way

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 25/5

17:05-20:15

2 stops38h 40m

₹ 51,692

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 22/10

19:10-16:55

2 stops33h 15m

₹ 63,905

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 19/7

00:10-11:40

2 stops47h 00m

₹ 66,367

Flights are sorted by cheapest return flights first.

Deals found on 5/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
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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 ₹ 74,887). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 166,911). 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 ₹ 124,781, Singapore Airlines can have you in Kolkata from Seattle in 21h 35m. 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 ₹ 74,887). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 166,911). 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

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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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