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Cheap flights from Seattle to Kolkata from $437

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 1/13. 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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0 bags

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Find the cheapest flights from Seattle to Kolkata

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:45 am - 10:25 pm
SEA
-
CCU
24h 10m1 stop
Multiple Airlines Logo
11:40 pm - 1:55 pm
CCU
-
SEA
26h 45m2 stops
$735Multiple Airlines
Sat, Feb 21 - Tue, Mar 10
Singapore Airlines Logo
9:45 am - 10:25 pm
SEA
-
CCU
24h 10m1 stop
Singapore Airlines Logo
11:30 pm - 8:45 am
CCU
-
SEA
21h 45m1 stop
$764Singapore Airlines
Fri, Mar 20 - Thu, Apr 16
Singapore Airlines Logo
10:15 am - 10:15 pm
SEA
-
CCU
23h 30m1 stop
Singapore Airlines Logo
11:40 pm - 8:45 am
CCU
-
SEA
21h 35m1 stop
$845Singapore Airlines
Fri, Apr 24 - Sat, May 9
Multiple Airlines Logo
8:41 pm - 10:25 pm
SEA
-
CCU
36h 14m2 stops
Multiple Airlines Logo
11:40 pm - 1:55 pm
CCU
-
SEA
26h 45m2 stops
$879Multiple Airlines
Sat, Feb 21 - Tue, Mar 10
Singapore Airlines Logo
10:15 am - 10:15 pm
SEA
-
CCU
23h 30m1 stop
Singapore Airlines Logo
11:40 pm - 8:45 am
CCU
-
SEA
21h 35m1 stop
$897Singapore Airlines
Fri, Apr 24 - Sat, May 9
Multiple Airlines Logo
2:53 pm - 10:35 pm
SEA
-
CCU
43h 12m2 stops
Multiple Airlines Logo
11:40 pm - 8:45 am
CCU
-
SEA
21h 35m1 stop
$902Multiple Airlines
Wed, Apr 1 - Wed, Apr 15
Multiple Airlines Logo
9:24 pm - 10:15 pm
SEA
-
CCU
36h 21m2 stops
Multiple Airlines Logo
11:40 pm - 8:45 am
CCU
-
SEA
21h 35m1 stop
$905Multiple Airlines
Fri, Apr 24 - Sat, May 9
Singapore Airlines Logo
8:45 am - 10:25 pm
SEA
-
CCU
24h 10m1 stop
Singapore Airlines Logo
11:40 pm - 8:10 am
CCU
-
SEA
21h 00m1 stop
$922Singapore Airlines
Fri, Feb 20 - Wed, Mar 11
Multiple Airlines Logo
9:24 pm - 10:15 pm
SEA
-
CCU
36h 21m2 stops
Multiple Airlines Logo
11:40 pm - 8:45 am
CCU
-
SEA
21h 35m1 stop
$948Multiple Airlines
Fri, May 1 - Sat, May 16
Multiple Airlines Logo
2:15 pm - 10:05 am
SEA
-
CCU
30h 20m2 stops
Multiple Airlines Logo
6:30 pm - 11:40 am
CCU
-
SEA
30h 40m2 stops
$966Multiple Airlines
Wed, Feb 4 - Sun, Feb 15

Turkish Airlines flights from Seattle to Kolkata

Our best Turkish Airlines deals on Seattle to Kolkata flight tickets
Turkish Airlines
Jan 16
SEA7:00 pmSeattle/Tacoma Intl
31h 15m
2 stops
CCU3:45 pmKolkata Netaji S. Chandra
Jan 30
CCU9:30 pmKolkata Netaji S. Chandra
33h 05m
2 stops
SEA5:05 pmSeattle/Tacoma Intl
$1,090
Find similar
Turkish Airlines
Feb 11
SEA7:00 pmSeattle/Tacoma Intl
26h 40m
2 stops
CCU11:10 amKolkata Netaji S. Chandra
Feb 21
CCU10:30 pmKolkata Netaji S. Chandra
32h 05m
2 stops
SEA5:05 pmSeattle/Tacoma Intl
$1,119
Find similar
Turkish Airlines
Jan 11
SEA7:00 pmSeattle/Tacoma Intl
31h 15m
2 stops
CCU3:45 pmKolkata Netaji S. Chandra
Jan 23
CCU10:30 pmKolkata Netaji S. Chandra
32h 05m
2 stops
SEA5:05 pmSeattle/Tacoma Intl
$1,155
Find similar

Qatar Airways flights from Seattle to Kolkata

Our best Qatar Airways deals on Seattle to Kolkata flight tickets
Qatar Airways
Feb 22
SEA9:41 pmSeattle/Tacoma Intl
38h 44m
2 stops
CCU1:55 amKolkata Netaji S. Chandra
Mar 8
CCU3:25 amKolkata Netaji S. Chandra
29h 52m
2 stops
SEA8:47 pmSeattle/Tacoma Intl
$1,043
Find similar
Qatar Airways
Feb 23
SEA8:15 amSeattle/Tacoma Intl
28h 10m
2 stops
CCU1:55 amKolkata Netaji S. Chandra
Mar 8
CCU3:25 amKolkata Netaji S. Chandra
30h 53m
2 stops
SEA9:48 pmSeattle/Tacoma Intl
$1,118
Find similar
Qatar Airways
Feb 19
SEA8:15 amSeattle/Tacoma Intl
28h 10m
2 stops
CCU1:55 amKolkata Netaji S. Chandra
Mar 10
CCU3:25 amKolkata Netaji S. Chandra
41h 52m
2 stops
SEA8:47 amSeattle/Tacoma Intl
$1,124
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 December 28, 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

Sat 2/21

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Tue 3/10

11:40 pm-1:55 pm

2 stops26h 45m

$735

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 3/20

9:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 4/16

11:30 pm-8:45 am

1 stop21h 45m

$764

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 4/24

10:15 am-10:15 pm

1 stop23h 30m

Kolkata Netaji S. Chandra

Sat 5/9

11:40 pm-8:45 am

1 stop21h 35m

$845

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 2/21

8:41 pm-10:25 pm

2 stops36h 14m

Kolkata Netaji S. Chandra

Tue 3/10

11:40 pm-1:55 pm

2 stops26h 45m

$879

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 4/24

10:15 am-10:15 pm

1 stop23h 30m

Kolkata Netaji S. Chandra

Sat 5/9

11:40 pm-8:45 am

1 stop21h 35m

$897

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/1

2:53 pm-10:35 pm

2 stops43h 12m

Kolkata Netaji S. Chandra

Wed 4/15

11:40 pm-8:45 am

1 stop21h 35m

$902

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 4/24

9:24 pm-10:15 pm

2 stops36h 21m

Kolkata Netaji S. Chandra

Sat 5/9

11:40 pm-8:45 am

1 stop21h 35m

$905

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 2/20

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Wed 3/11

11:40 pm-8:10 am

1 stop21h 00m

$922

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 5/1

9:24 pm-10:15 pm

2 stops36h 21m

Kolkata Netaji S. Chandra

Sat 5/16

11:40 pm-8:45 am

1 stop21h 35m

$948

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 2/4

2:15 pm-10:05 am

2 stops30h 20m

Kolkata Netaji S. Chandra

Sun 2/15

6:30 pm-11:40 am

2 stops30h 40m

$966

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 April instead. Flights to Kolkata in April, while not as cheap as those in September, still average around $968.

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.

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 $1,117 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.

Can stopping save me money on Seattle to Kolkata flights?

You could potentially save up to 82% 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 December 2025, prices for Seattle to Kolkata flights are approximately 17% 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

Fastest flight time

23h 30m

Direct flights

None
The fastest flight from Seattle to Kolkata takes 23h 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 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 $714Free CancellationRating
8.1
1,421 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $897Free CancellationRating
7.4
3,697 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,137Free CancellationRating
7.3
4,125 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,497Free CancellationRating
8.1
3,443 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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