Find flights
When to book
FAQs

Cheap flights from Seattle to Kolkata from ₹ 32,915

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
30 Apr — 7 May1
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 31 March 2026.

Tue 1/910:15
SEA
-
CCU
1 stop23h 30m
Singapore Airlines
Sat 31/1023:40
CCU
-
SEA
1 stop21h 00m
Singapore Airlines
Deal found 27/3₹ 54,796
Wed 2/919:07
SEA
-
CCU
2 stops38h 58m
Multiple Airlines
Wed 21/1023:40
CCU
-
SEA
1 stop21h 35m
Multiple Airlines
Deal found 30/3₹ 78,280
Sun 3/510:15
SEA
-
CCU
1 stop23h 50m
Singapore Airlines
Wed 30/923:40
CCU
-
SEA
1 stop21h 35m
Singapore Airlines
Deal found 27/3₹ 80,921
Wed 5/818:07
SEA
-
CCU
2 stops39h 58m
Multiple Airlines
Wed 14/1023:40
CCU
-
SEA
1 stop21h 35m
Multiple Airlines
Deal found 26/3₹ 81,204
Tue 1/910:15
SEA
-
CCU
1 stop23h 30m
Multiple Airlines
Sat 31/1023:40
CCU
-
SEA
3 stops33h 55m
Multiple Airlines
Deal found 27/3₹ 86,296
Thu 23/710:15
SEA
-
CCU
1 stop23h 50m
Singapore Airlines
Mon 17/823:30
CCU
-
SEA
1 stop21h 45m
Singapore Airlines
Deal found 27/3₹ 89,220
Sun 3/519:04
SEA
-
CCU
2 stops39h 01m
Multiple Airlines
Wed 30/923:40
CCU
-
SEA
1 stop21h 35m
Multiple Airlines
Deal found 27/3₹ 89,880
Tue 1/910:15
SEA
-
CCU
1 stop23h 30m
Singapore Airlines
Wed 21/1023:40
CCU
-
SEA
1 stop21h 35m
Singapore Airlines
Deal found 30/3₹ 90,163
Sun 3/517:35
SEA
-
CCU
2 stops50h 00m
KLM
Wed 30/922:30
CCU
-
SEA
2 stops25h 52m
KLM
Deal found 27/3₹ 90,918
Sun 30/810:15
SEA
-
CCU
1 stop23h 50m
Singapore Airlines
Mon 19/1023:40
CCU
-
SEA
1 stop21h 35m
Singapore Airlines
Deal found 30/3₹ 92,050
Sun 19/416:30
SEA
-
CCU
2 stops34h 05m
Multiple Airlines
Sun 10/522:30
CCU
-
SEA
2 stops26h 45m
Multiple Airlines
Deal found 27/3₹ 92,332
Fri 30/1009:45
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Tue 24/1123:40
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 27/3₹ 93,936

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 31 March 2026.

Round-trip from

₹ 54,796

One-way from

₹ 32,915

Popular in

December

Cheapest in

September

Average price

₹ 97,142
Singapore Airlines
  • Singapore Airlines
  • 1/9-31/10
  • 2 total stops
  • 44h 30m total
  • Seattle to Kolkata
Search Deals
Singapore Airlines
  • Singapore Airlines
  • 25/4
  • 1 total stop
  • 24h 00m total
  • Seattle to Kolkata
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (₹ 609,216 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 374,375 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 31 March 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

Wed 5/8

18:07-22:35

2 stops39h 58m

Kolkata Netaji S. Chandra

Wed 14/10

23:40-08:45

1 stop21h 35m

₹ 81,204
Fastest return journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 1/5

16:30-02:30

1 stop21h 30m

Kolkata Netaji S. Chandra

Fri 22/5

04:00-12:45

1 stop21h 15m

₹ 108,743

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 20/9

19:10-12:50

2 stops29h 10m

Kolkata Netaji S. Chandra

Wed 23/9

18:45-17:15

2 stops35h 00m

₹ 116,005

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 8/5

19:10-12:50

2 stops29h 10m

Kolkata Netaji S. Chandra

Sun 26/7

18:45-17:15

2 stops35h 00m

₹ 120,815

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 2/9

19:10-15:30

2 stops55h 50m

Kolkata Netaji S. Chandra

Sun 6/9

21:40-17:15

2 stops32h 05m

₹ 123,078

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 15/7

07:00-22:35

2 stops27h 05m

Kolkata Netaji S. Chandra

Tue 4/8

23:30-08:45

1 stop45h 45m

₹ 123,361

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 20/9

10:15-22:35

1 stop23h 50m

Kolkata Netaji S. Chandra

Wed 23/9

23:40-08:45

1 stop21h 35m

₹ 126,191

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 10/5

19:10-12:50

2 stops29h 10m

Kolkata Netaji S. Chandra

Thu 23/7

21:40-10:40

2 stops49h 30m

₹ 129,680
Cheapest one-way
Fastest single journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 25/4

09:45-22:15

1 stop24h 00m

₹ 32,915

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 26/4

09:45-22:35

1 stop24h 20m

₹ 42,629

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 16 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?

Use this chart to determine the optimal time to book a return flight from Seattle to Kolkata. Price data was last updated on 13 March 2026.

Booking 68 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 ₹ 45,836). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 97,520). 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 ₹ 108,743, Qatar Airways can have you in Kolkata from Seattle in 21h 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 ₹ 45,836). Flying from Seattle to Kolkata in December is currently the most expensive (average of ₹ 97,520). 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.