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Cheap flights from Seattle to Kolkata from $409

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 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Singapore Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Singapore Airlines Logo
11:40 pm - 7:10 amCCU-SEA
21h 00m1 stop
$747Singapore Airlines
Find Deal
Sun, Feb 1 - Thu, Mar 5
Singapore Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Singapore Airlines Logo
11:40 pm - 8:10 amCCU-SEA
21h 00m1 stop
$757Singapore Airlines
Find Deal
Thu, Jan 22 - Mon, Mar 9
Multiple Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Multiple Airlines Logo
11:40 pm - 4:04 pmCCU-SEA
28h 54m2 stops
$761Multiple Airlines
Find Deal
Thu, Jan 22 - Mon, Mar 9
Multiple Airlines Logo
8:45 am - 11:50 pmSEA-CCU
25h 35m2 stops
Multiple Airlines Logo
12:50 am - 7:10 amCCU-SEA
43h 50m2 stops
$838Multiple Airlines
Find Deal
Tue, Jan 6 - Wed, Jan 28
Multiple Airlines Logo
12:10 am - 11:50 pmSEA-CCU
34h 10m2 stops
Multiple Airlines Logo
12:50 am - 1:55 pmCCU-SEA
50h 35m2 stops
$853Multiple Airlines
Find Deal
Mon, Jan 5 - Wed, Jan 28
Multiple Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Multiple Airlines Logo
11:40 pm - 8:58 pmCCU-SEA
33h 48m3 stops
$856Multiple Airlines
Find Deal
Thu, Jan 22 - Mon, Mar 9
Multiple Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Multiple Airlines Logo
11:40 pm - 8:47 pmCCU-SEA
33h 37m2 stops
$902Multiple Airlines
Find Deal
Tue, Jan 6 - Sun, Mar 8
Multiple Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Multiple Airlines Logo
11:40 pm - 8:47 pmCCU-SEA
34h 37m2 stops
$909Multiple Airlines
Find Deal
Sun, Feb 1 - Thu, Mar 5
Singapore Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Singapore Airlines Logo
11:40 pm - 7:10 amCCU-SEA
21h 00m1 stop
$922Singapore Airlines
Find Deal
Tue, Jan 6 - Wed, Jan 28
Singapore Airlines Logo
8:45 am - 10:25 pmSEA-CCU
24h 10m1 stop
Singapore Airlines Logo
11:40 pm - 7:10 amCCU-SEA
21h 00m1 stop
$928Singapore Airlines
Find Deal
Tue, Jan 6 - Thu, Jan 29

Singapore Airlines flights from Seattle to Kolkata

Our best Singapore Airlines deals on Seattle to Kolkata flight tickets
Singapore Airlines
Feb 1
SEA8:45 amSeattle/Tacoma Intl
24h 10m
1 stop
CCU10:25 pmKolkata Netaji S. Chandra
Mar 5
CCU11:40 pmKolkata Netaji S. Chandra
21h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$747
Find similar
Singapore Airlines
Jan 22
SEA8:45 amSeattle/Tacoma Intl
24h 10m
1 stop
CCU10:25 pmKolkata Netaji S. Chandra
Mar 9
CCU11:40 pmKolkata Netaji S. Chandra
21h 00m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$757
Find similar
Singapore Airlines
Mar 26
SEA9:45 amSeattle/Tacoma Intl
24h 10m
1 stop
CCU10:25 pmKolkata Netaji S. Chandra
Apr 25
CCU11:30 pmKolkata Netaji S. Chandra
21h 45m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$873
Find similar

KLM flights from Seattle to Kolkata

Our best KLM deals on Seattle to Kolkata flight tickets
KLM
Dec 30
SEA1:40 pmSeattle/Tacoma Intl
28h 00m
2 stops
CCU7:10 amKolkata Netaji S. Chandra
Jan 21
CCU8:15 pmKolkata Netaji S. Chandra
28h 40m
2 stops
SEA11:25 amSeattle/Tacoma Intl
$1,032
Find similar
KLM
Nov 16
SEA3:00 pmSeattle/Tacoma Intl
29h 25m
2 stops
CCU9:55 amKolkata Netaji S. Chandra
Nov 26
CCU9:30 pmKolkata Netaji S. Chandra
27h 45m
2 stops
SEA11:45 amSeattle/Tacoma Intl
$1,335
Find similar
KLM
Nov 17
SEA3:00 pmSeattle/Tacoma Intl
28h 25m
2 stops
CCU8:55 amKolkata Netaji S. Chandra
Dec 8
CCU9:30 pmKolkata Netaji S. Chandra
27h 50m
2 stops
SEA11:50 amSeattle/Tacoma Intl
$1,433
Find similar

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 November 13, 2025.
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

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 2/1

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 3/5

11:40 pm-7:10 am

1 stop21h 00m

$747

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 1/22

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 3/9

11:40 pm-8:10 am

1 stop21h 00m

$757

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 1/22

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 3/9

11:40 pm-4:04 pm

2 stops28h 54m

$761

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 1/6

8:45 am-11:50 pm

2 stops25h 35m

Kolkata Netaji S. Chandra

Wed 1/28

12:50 am-7:10 am

2 stops43h 50m

$838

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 1/5

12:10 am-11:50 pm

2 stops34h 10m

Kolkata Netaji S. Chandra

Wed 1/28

12:50 am-1:55 pm

2 stops50h 35m

$853

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 1/22

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 3/9

11:40 pm-8:58 pm

3 stops33h 48m

$856

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 1/6

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Sun 3/8

11:40 pm-8:47 pm

2 stops33h 37m

$902

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 2/1

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 3/5

11:40 pm-8:47 pm

2 stops34h 37m

$909

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 1/6

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Wed 1/28

11:40 pm-7:10 am

1 stop21h 00m

$922

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 1/6

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 1/29

11:40 pm-7:10 am

1 stop21h 00m

$928

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 cheapest month to fly to Kolkata?

The month of September is, on average, the cheapest month to fly to Kolkata from Seattle, with most prices found around $788. If you aren’t able to travel during the month of September, then book flights to Kolkata from Seattle during February instead. Flights to Kolkata in February, while not as cheap as those in September, still average around $894.

What is the cheapest day to depart on your flight to Kolkata?

On average, the least expensive day to fly to Kolkata from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $1,171. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Kolkata on Sunday is $1,676.

What is the cheapest Seattle/Tacoma Intl to Kolkata Netaji S. Chandra flight route?

Fly from Seattle/Tacoma Intl to Kolkata Netaji S. Chandra for the best Seattle/Tacoma Intl - Kolkata Netaji S. Chandra flight prices

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 $1,149 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 $848 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Kolkata Netaji S. Chandra flights?

There is only 1 cabin class available to choose from on Seattle/Tacoma Intl to Kolkata Netaji S. Chandra flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Kolkata flights?

You could potentially save up to 27% 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 November 2025, prices for Seattle to Kolkata flights are approximately 13% 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 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

Direct flights

None
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 7221.3 mi. 23h 30m 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
8.1
1,400 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $1,102Free CancellationRating
7.4
3,661 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,137Free CancellationRating
7.3
4,044 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,497Free CancellationRating
8.1
3,407 reviews
Search Emirates 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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