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Cheap flights from Seattle to Kolkata from $430

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 8/14. 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

Find the cheapest flights from Seattle to Kolkata

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
8:45 am - 10:25 pm
SEA
-
CCU
24h 10m
1 stop
Singapore Airlines Logo
11:40 pm - 7:10 am
CCU
-
SEA
21h 00m
1 stop
$1,039Singapore Airlines
Wed, Nov 18 - Fri, Dec 25
Singapore Airlines Logo
8:45 am - 10:25 pm
SEA
-
CCU
24h 10m
1 stop
Singapore Airlines Logo
11:40 pm - 7:10 am
CCU
-
SEA
21h 00m
1 stop
$1,079Singapore Airlines
Sat, Nov 14 - Thu, Dec 10
Multiple Airlines Logo
8:15 pm - 10:25 pm
SEA
-
CCU
36h 40m
2 stops
Multiple Airlines Logo
11:40 pm - 7:10 am
CCU
-
SEA
21h 00m
1 stop
$1,205Multiple Airlines
Mon, Nov 16 - Tue, Dec 8
Turkish Airlines Logo
7:15 pm - 10:45 am
SEA
-
CCU
27h 00m
2 stops
Turkish Airlines Logo
8:45 pm - 7:10 pm
CCU
-
SEA
34h 55m
2 stops
$1,208Turkish Airlines
Mon, Sep 28 - Sat, Oct 31
Multiple Airlines Logo
7:15 pm - 11:50 am
SEA
-
CCU
28h 05m
2 stops
Multiple Airlines Logo
8:35 pm - 6:10 pm
CCU
-
SEA
35h 05m
2 stops
$1,210Multiple Airlines
Tue, Sep 8 - Fri, Nov 6
Multiple Airlines Logo
8:30 pm - 10:35 pm
SEA
-
CCU
37h 35m
2 stops
Multiple Airlines Logo
11:40 pm - 8:10 am
CCU
-
SEA
21h 00m
1 stop
$1,212Multiple Airlines
Mon, Sep 28 - Sat, Oct 31
Turkish Airlines Logo
8:05 pm - 3:45 pm
SEA
-
CCU
30h 10m
2 stops
Turkish Airlines Logo
6:30 pm - 5:10 pm
CCU
-
SEA
36h 10m
2 stops
$1,218Turkish Airlines
Wed, Nov 4 - Thu, Dec 3
Turkish Airlines Logo
8:05 pm - 3:45 pm
SEA
-
CCU
30h 10m
2 stops
Turkish Airlines Logo
8:45 pm - 5:10 pm
CCU
-
SEA
33h 55m
2 stops
$1,220Turkish Airlines
Thu, Nov 5 - Wed, Dec 2
Turkish Airlines Logo
7:15 pm - 10:45 am
SEA
-
CCU
27h 00m
2 stops
Turkish Airlines Logo
8:45 pm - 7:10 pm
CCU
-
SEA
34h 55m
2 stops
$1,226Turkish Airlines
Sun, Oct 11 - Sat, Oct 31
Turkish Airlines Logo
7:05 pm - 12:25 pm
SEA
-
CCU
27h 50m
2 stops
Turkish Airlines Logo
8:45 pm - 5:10 pm
CCU
-
SEA
33h 55m
2 stops
$1,248Turkish Airlines
Sat, Nov 14 - Mon, Dec 7

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Singapore Airlines flights from Seattle to Kolkata

Our best Singapore Airlines deals on Seattle to Kolkata flight tickets
Singapore Airlines
Nov 18
SEA8:45 amSeattle/Tacoma Intl
24h 10m
1 stop
CCU10:25 pmKolkata Netaji S. Chandra
Dec 25
CCU11:40 pmKolkata Netaji S. Chandra
21h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,039
Singapore Airlines
Nov 14
SEA8:45 amSeattle/Tacoma Intl
24h 10m
1 stop
CCU10:25 pmKolkata Netaji S. Chandra
Dec 10
CCU11:40 pmKolkata Netaji S. Chandra
21h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,079
Singapore Airlines
Oct 11
SEA10:15 amSeattle/Tacoma Intl
23h 50m
1 stop
CCU10:35 pmKolkata Netaji S. Chandra
Oct 31
CCU11:40 pmKolkata Netaji S. Chandra
21h 00m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,268

Qatar Airways flights from Seattle to Kolkata

Our best Qatar Airways deals on Seattle to Kolkata flight tickets
Qatar Airways
Sep 8
SEA4:25 pmSeattle/Tacoma Intl
21h 35m
1 stop
CCU2:30 amKolkata Netaji S. Chandra
Nov 5
CCU3:25 amKolkata Netaji S. Chandra
21h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,323
Qatar Airways
Nov 5
SEA3:50 pmSeattle/Tacoma Intl
20h 35m
1 stop
CCU1:55 amKolkata Netaji S. Chandra
Dec 1
CCU3:25 amKolkata Netaji S. Chandra
21h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,325
Qatar Airways
Nov 15
SEA3:50 pmSeattle/Tacoma Intl
20h 35m
1 stop
CCU1:55 amKolkata Netaji S. Chandra
Dec 9
CCU3:25 amKolkata Netaji S. Chandra
21h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,346

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated July 3, 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 round-trip
Quickest round-trip

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 11/18

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Fri 12/25

11:40 pm-7:10 am

1 stop21h 00m

$1,039

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 11/14

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 12/10

11:40 pm-7:10 am

1 stop21h 00m

$1,079

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 11/16

8:15 pm-10:25 pm

2 stops36h 40m

Kolkata Netaji S. Chandra

Tue 12/8

11:40 pm-7:10 am

1 stop21h 00m

$1,205

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 9/28

7:15 pm-10:45 am

2 stops27h 00m

Kolkata Netaji S. Chandra

Sat 10/31

8:45 pm-7:10 pm

2 stops34h 55m

$1,208

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 9/8

7:15 pm-11:50 am

2 stops28h 05m

Kolkata Netaji S. Chandra

Fri 11/6

8:35 pm-6:10 pm

2 stops35h 05m

$1,210

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 9/28

8:30 pm-10:35 pm

2 stops37h 35m

Kolkata Netaji S. Chandra

Sat 10/31

11:40 pm-8:10 am

1 stop21h 00m

$1,212

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 11/4

8:05 pm-3:45 pm

2 stops30h 10m

Kolkata Netaji S. Chandra

Thu 12/3

6:30 pm-5:10 pm

2 stops36h 10m

$1,218

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 11/5

8:05 pm-3:45 pm

2 stops30h 10m

Kolkata Netaji S. Chandra

Wed 12/2

8:45 pm-5:10 pm

2 stops33h 55m

$1,220

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 10/11

7:15 pm-10:45 am

2 stops27h 00m

Kolkata Netaji S. Chandra

Sat 10/31

8:45 pm-7:10 pm

2 stops34h 55m

$1,226

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 11/14

7:05 pm-12:25 pm

2 stops27h 50m

Kolkata Netaji S. Chandra

Mon 12/7

8:45 pm-5:10 pm

2 stops33h 55m

$1,248

Flights are sorted by cheapest round-trip 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 typical price of a round-trip flight between Seattle and Kolkata?

What is the cheapest month to fly to Kolkata?

The month of March is, on average, the cheapest month to fly to Kolkata from Seattle, with most prices found around $922. If you aren’t able to travel during the month of March, then book flights to Kolkata from Seattle during January instead. Flights to Kolkata in January, while not as cheap as those in March, still average around $974.

How far in advance should I book a flight from Seattle 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 $1,140 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kolkata from Seattle for as low as $846 on momondo.

Can stopping save me money on Seattle to Kolkata flights?

You could potentially save up to 16% on your flight if you consider stops on a Seattle to Kolkata flight.

How have Seattle to Kolkata flight prices changed over time?

As of July 2026, prices for Seattle to Kolkata flights are approximately 3% more expensive 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 round-trip 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

23h 50m

Direct flights

None
The fastest flight from Seattle to Kolkata takes 23h 50m
There are no direct flights from Seattle to Kolkata. There are no popular flight routes from Seattle to Kolkata.
Search flight deals

Frequently asked questions about flying from Seattle to Kolkata

  • 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 7221.3 mi. 23h 50m is a normal flight duration for this route.

  • 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 refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kolkata Netaji S. Chandra Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

  • What is the most popular airline from Seattle to Kolkata?

Best airlines flying from Seattle to Kolkata

Compare and see reviews for airlines that fly from Seattle to Kolkata with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $717Free CancellationRating
8.2
1,559 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $1,008Free CancellationRating
7.3
3,742 reviews
Search Qatar Airways flights

Why use momondo?

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

Finding the right flight to Kolkata from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kolkata quick and easy, saving you time and money.

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?

momondo provides multiple filters to help you find the best flight to Kolkata from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Seattle to Kolkata flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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