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Cheap flights from Seattle to Kolkata from ₹ 38,891

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Kolkata departing on 25/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:15 - 22:15
SEA
-
CCU
23h 30m
1 stop
Multiple Airlines Logo
23:40 - 16:56
CCU
-
SEA
29h 46m
2 stops
₹ 80,587Multiple Airlines
Fri, 18 Sep - Sun, 27 Sep
Singapore Airlines Logo
10:15 - 22:15
SEA
-
CCU
23h 30m
1 stop
Singapore Airlines Logo
23:40 - 08:45
CCU
-
SEA
45h 35m
1 stop
₹ 89,095Singapore Airlines
Fri, 18 Sep - Sun, 27 Sep
Singapore Airlines Logo
10:15 - 22:35
SEA
-
CCU
23h 50m
1 stop
Singapore Airlines Logo
23:30 - 08:45
CCU
-
SEA
21h 45m
1 stop
₹ 89,469Singapore Airlines
Thu, 17 Sep - Mon, 28 Sep
Qatar Airways Logo
16:25 - 02:30
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
04:00 - 12:45
CCU
-
SEA
21h 15m
1 stop
₹ 94,050Qatar Airways
Mon, 6 Apr - Mon, 20 Apr
Singapore Airlines Logo
10:15 - 22:15
SEA
-
CCU
23h 30m
1 stop
Singapore Airlines Logo
23:40 - 08:45
CCU
-
SEA
21h 35m
1 stop
₹ 94,143Singapore Airlines
Fri, 18 Sep - Sat, 26 Sep
Multiple Airlines Logo
13:30 - 08:15
SEA
-
CCU
30h 15m
2 stops
Multiple Airlines Logo
22:30 - 11:47
CCU
-
SEA
25h 47m
2 stops
₹ 94,798Multiple Airlines
Thu, 17 Sep - Sun, 27 Sep
Multiple Airlines Logo
13:30 - 05:30
SEA
-
CCU
27h 30m
2 stops
Multiple Airlines Logo
19:00 - 11:15
CCU
-
SEA
28h 45m
2 stops
₹ 94,891Multiple Airlines
Thu, 17 Sep - Sat, 26 Sep
Qatar Airways Logo
16:30 - 02:30
SEA
-
CCU
21h 30m
1 stop
Qatar Airways Logo
04:00 - 12:45
CCU
-
SEA
21h 15m
1 stop
₹ 96,480Qatar Airways
Tue, 5 May - Tue, 12 May
Qatar Airways Logo
08:10 - 02:30
SEA
-
CCU
29h 50m
2 stops
Qatar Airways Logo
04:00 - 12:25
CCU
-
SEA
20h 55m
1 stop
₹ 97,322Qatar Airways
Thu, 17 Sep - Mon, 28 Sep
Qatar Airways Logo
16:25 - 02:30
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
04:00 - 12:45
CCU
-
SEA
21h 15m
1 stop
₹ 97,789Qatar Airways
Mon, 6 Apr - Sat, 18 Apr

Singapore Airlines flights from Seattle to Kolkata

Our best Singapore Airlines deals on Seattle to Kolkata flight tickets
Singapore Airlines
1 Sept
SEA10:15Seattle/Tacoma Intl
23h 30m
1 stop
CCU22:15Kolkata Netaji S. Chandra
30 Sept
CCU23:40Kolkata Netaji S. Chandra
21h 35m
1 stop
SEA08:45Seattle/Tacoma Intl
₹ 54,317
Singapore Airlines
18 Sept
SEA10:15Seattle/Tacoma Intl
23h 30m
1 stop
CCU22:15Kolkata Netaji S. Chandra
27 Sept
CCU23:40Kolkata Netaji S. Chandra
45h 35m
1 stop
SEA08:45Seattle/Tacoma Intl
₹ 89,095
Singapore Airlines
17 Sept
SEA10:15Seattle/Tacoma Intl
23h 50m
1 stop
CCU22:35Kolkata Netaji S. Chandra
28 Sept
CCU23:30Kolkata Netaji S. Chandra
21h 45m
1 stop
SEA08:45Seattle/Tacoma Intl
₹ 89,469

Turkish Airlines flights from Seattle to Kolkata

Our best Turkish Airlines deals on Seattle to Kolkata flight tickets
Turkish Airlines
5 Apr
SEA19:10Seattle/Tacoma Intl
28h 50m
2 stops
CCU12:30Kolkata Netaji S. Chandra
23 Apr
CCU21:40Kolkata Netaji S. Chandra
56h 05m
2 stops
SEA17:15Seattle/Tacoma Intl
₹ 105,362
Turkish Airlines
1 May
SEA19:10Seattle/Tacoma Intl
27h 05m
2 stops
CCU10:45Kolkata Netaji S. Chandra
22 May
CCU21:40Kolkata Netaji S. Chandra
32h 05m
2 stops
SEA17:15Seattle/Tacoma Intl
₹ 111,719
Turkish Airlines
5 Apr
SEA19:10Seattle/Tacoma Intl
27h 05m
2 stops
CCU10:45Kolkata Netaji S. Chandra
20 Apr
CCU18:45Kolkata Netaji S. Chandra
59h 00m
2 stops
SEA17:15Seattle/Tacoma Intl
₹ 111,906

momondo 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, momondo users made 59,053 searches. Data last updated 23 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

Fri 18/9

10:15-22:15

1 stop23h 30m

Kolkata Netaji S. Chandra

Sun 27/9

23:40-16:56

2 stops29h 46m

₹ 80,587

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 18/9

10:15-22:15

1 stop23h 30m

Kolkata Netaji S. Chandra

Sun 27/9

23:40-08:45

1 stop45h 35m

₹ 89,095

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

10:15-22:35

1 stop23h 50m

Kolkata Netaji S. Chandra

Mon 28/9

23:30-08:45

1 stop21h 45m

₹ 89,469

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 6/4

16:25-02:30

1 stop21h 35m

Kolkata Netaji S. Chandra

Mon 20/4

04:00-12:45

1 stop21h 15m

₹ 94,050

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 18/9

10:15-22:15

1 stop23h 30m

Kolkata Netaji S. Chandra

Sat 26/9

23:40-08:45

1 stop21h 35m

₹ 94,143

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

13:30-08:15

2 stops30h 15m

Kolkata Netaji S. Chandra

Sun 27/9

22:30-11:47

2 stops25h 47m

₹ 94,798

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

13:30-05:30

2 stops27h 30m

Kolkata Netaji S. Chandra

Sat 26/9

19:00-11:15

2 stops28h 45m

₹ 94,891
Fastest return journey

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 5/5

16:30-02:30

1 stop21h 30m

Kolkata Netaji S. Chandra

Tue 12/5

04:00-12:45

1 stop21h 15m

₹ 96,480

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 17/9

08:10-02:30

2 stops29h 50m

Kolkata Netaji S. Chandra

Mon 28/9

04:00-12:25

1 stop20h 55m

₹ 97,322

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 6/4

16:25-02:30

1 stop21h 35m

Kolkata Netaji S. Chandra

Sat 18/4

04:00-12:45

1 stop21h 15m

₹ 97,789

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kolkata from

How to get the cheapest flight ticket from Seattle to Kolkata

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Kolkata?

If you are unable to visit Kolkata during the month of September, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around ₹ 87,132.

How far in advance should I book a flight to Kolkata?

You are more likely to see cheaper flights to Kolkata from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Kolkata for around ₹ 103,788 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kolkata from Seattle for as low as ₹ 78,437 on momondo.

How have Seattle to Kolkata flight prices changed over time?

As of March 2026, prices for Seattle to Kolkata flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Kolkata

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Kolkata according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to Kolkata (SEA to CCU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Kolkata

Fastest flight time

21h 30m

Direct flights

None
The fastest flight from Seattle to Kolkata takes 21h 30m
There are no direct flights from Seattle to Kolkata. There are no popular flight routes from Seattle to Kolkata.
Search flight deals

  • How far is Seattle/Tacoma Intl to Kolkata Netaji S. Chandra by plane?

    The straight-line distance from Seattle/Tacoma Intl to Kolkata Netaji S. Chandra is 11621.6 km. Flights usually cover this in 21h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Kolkata Netaji S. Chandra Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Kolkata Netaji S. Chandra Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Kolkata Netaji S. Chandra Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Kolkata Netaji S. Chandra Airport.

  • What documentation or ID do you need to fly to Kolkata Netaji S. Chandra Airport?

    The necessary travel and health documents for your Kolkata Netaji S. Chandra Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Kolkata?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Kolkata . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Kolkata with flexible booking policies on momondo?

Flights from Seattle to Kolkata with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Kolkata?

Once all potential Seattle to Kolkata flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Kolkata right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Kolkata flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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