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Cheap flights from Seattle to Kolkata from $512

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 9/16. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Kolkata

Cheap round-trip flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
11:55 pm - 3:00 am
SEA
-
CCU
38h 35m
2 stops
Etihad Airways Logo
4:10 am - 8:42 pm
CCU
-
SEA
53h 02m
2 stops
$1,087Etihad Airways
Tue, Sep 22 - Tue, Oct 6
Singapore Airlines Logo
10:15 am - 10:15 pm
SEA
-
CCU
23h 30m
1 stop
Singapore Airlines Logo
11:30 pm - 8:45 am
CCU
-
SEA
45h 45m
1 stop
$1,157Singapore Airlines
Tue, Sep 22 - Tue, Oct 6
Etihad Airways Logo
11:55 pm - 8:30 pm
SEA
-
CCU
32h 05m
2 stops
Etihad Airways Logo
4:10 am - 9:15 pm
CCU
-
SEA
29h 35m
2 stops
$1,161Etihad Airways
Wed, Oct 7 - Sat, Oct 24
Etihad Airways Logo
11:55 pm - 8:30 pm
SEA
-
CCU
32h 05m
2 stops
Etihad Airways Logo
4:10 am - 9:15 pm
CCU
-
SEA
29h 35m
2 stops
$1,162Etihad Airways
Wed, Oct 7 - Sat, Oct 24
Multiple Airlines Logo
7:10 pm - 1:45 am
SEA
-
CCU
42h 05m
2 stops
Multiple Airlines Logo
7:30 pm - 5:05 pm
CCU
-
SEA
35h 05m
2 stops
$1,171Multiple Airlines
Wed, Oct 7 - Sun, Jan 31
Multiple Airlines Logo
10:15 am - 10:15 pm
SEA
-
CCU
23h 30m
1 stop
Multiple Airlines Logo
11:30 pm - 7:57 pm
CCU
-
SEA
32h 57m
2 stops
$1,177Multiple Airlines
Tue, Sep 22 - Tue, Oct 6
Multiple Airlines Logo
4:20 pm - 10:15 pm
SEA
-
CCU
41h 25m
2 stops
Multiple Airlines Logo
11:40 pm - 8:10 am
CCU
-
SEA
21h 00m
1 stop
$1,188Multiple Airlines
Wed, Oct 7 - Sat, Oct 24
Qatar Airways Logo
4:25 pm - 2:30 am
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
4:00 am - 12:25 pm
CCU
-
SEA
20h 55m
1 stop
$1,193Qatar Airways
Tue, Jun 16 - Wed, Jul 8
Qatar Airways Logo
4:25 pm - 2:30 am
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
4:00 am - 12:25 pm
CCU
-
SEA
20h 55m
1 stop
$1,197Qatar Airways
Tue, Jul 21 - Tue, Aug 11
Qatar Airways Logo
4:25 pm - 2:30 am
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
3:25 am - 11:40 am
CCU
-
SEA
21h 45m
1 stop
$1,218Qatar Airways
Wed, Oct 7 - Sat, Jan 30

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Qatar Airways flights from Seattle to Kolkata

Our best Qatar Airways deals on Seattle to Kolkata flight tickets
Qatar Airways
Jun 16
SEA4:25 pmSeattle/Tacoma Intl
21h 35m
1 stop
CCU2:30 amKolkata Netaji S. Chandra
Jul 8
CCU4:00 amKolkata Netaji S. Chandra
20h 55m
1 stop
SEA12:25 pmSeattle/Tacoma Intl
$1,193
Qatar Airways
Jul 21
SEA4:25 pmSeattle/Tacoma Intl
21h 35m
1 stop
CCU2:30 amKolkata Netaji S. Chandra
Aug 11
CCU4:00 amKolkata Netaji S. Chandra
20h 55m
1 stop
SEA12:25 pmSeattle/Tacoma Intl
$1,197
Qatar Airways
Oct 7
SEA4:25 pmSeattle/Tacoma Intl
21h 35m
1 stop
CCU2:30 amKolkata Netaji S. Chandra
Jan 30
CCU3:25 amKolkata Netaji S. Chandra
21h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,218

Etihad Airways flights from Seattle to Kolkata

Our best Etihad Airways deals on Seattle to Kolkata flight tickets
Etihad Airways
Sep 22
SEA11:55 pmSeattle/Tacoma Intl
38h 35m
2 stops
CCU3:00 amKolkata Netaji S. Chandra
Oct 6
CCU4:10 amKolkata Netaji S. Chandra
53h 02m
2 stops
SEA8:42 pmSeattle/Tacoma Intl
$1,087
Etihad Airways
Oct 7
SEA11:55 pmSeattle/Tacoma Intl
32h 05m
2 stops
CCU8:30 pmKolkata Netaji S. Chandra
Oct 24
CCU4:10 amKolkata Netaji S. Chandra
29h 35m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$1,161
Etihad Airways
Oct 7
SEA11:55 pmSeattle/Tacoma Intl
32h 05m
2 stops
CCU8:30 pmKolkata Netaji S. Chandra
Oct 24
CCU4:10 amKolkata Netaji S. Chandra
29h 35m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$1,162

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 May 4, 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

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 9/22

11:55 pm-3:00 am

2 stops38h 35m

Kolkata Netaji S. Chandra

Tue 10/6

4:10 am-8:42 pm

2 stops53h 02m

$1,087

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 9/22

10:15 am-10:15 pm

1 stop23h 30m

Kolkata Netaji S. Chandra

Tue 10/6

11:30 pm-8:45 am

1 stop45h 45m

$1,157

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 10/7

11:55 pm-8:30 pm

2 stops32h 05m

Kolkata Netaji S. Chandra

Sat 10/24

4:10 am-9:15 pm

2 stops29h 35m

$1,161

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 10/7

11:55 pm-8:30 pm

2 stops32h 05m

Kolkata Netaji S. Chandra

Sat 10/24

4:10 am-9:15 pm

2 stops29h 35m

$1,162

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 10/7

7:10 pm-1:45 am

2 stops42h 05m

Kolkata Netaji S. Chandra

Sun 1/31

7:30 pm-5:05 pm

2 stops35h 05m

$1,171

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 9/22

10:15 am-10:15 pm

1 stop23h 30m

Kolkata Netaji S. Chandra

Tue 10/6

11:30 pm-7:57 pm

2 stops32h 57m

$1,177

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 10/7

4:20 pm-10:15 pm

2 stops41h 25m

Kolkata Netaji S. Chandra

Sat 10/24

11:40 pm-8:10 am

1 stop21h 00m

$1,188
Quickest round-trip

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 6/16

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Wed 7/8

4:00 am-12:25 pm

1 stop20h 55m

$1,193

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 7/21

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Tue 8/11

4:00 am-12:25 pm

1 stop20h 55m

$1,197

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 10/7

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Sat 1/30

3:25 am-11:40 am

1 stop21h 45m

$1,218

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 September is, on average, the cheapest month to fly to Kolkata from Seattle, with most prices found around $791. If you aren’t able to travel during the month of September, then book flights to Kolkata from Seattle during March instead. Flights to Kolkata in March, while not as cheap as those in September, still average around $818.

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 $1,095 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 $815 on momondo.

Can stopping save me money on Seattle to Kolkata flights?

You could potentially save up to 10% 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 May 2026, prices for Seattle to Kolkata flights are approximately 9% 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

21h 35m

Direct flights

None
The fastest flight from Seattle to Kolkata takes 21h 35m
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. 21h 35m 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 $698Free CancellationRating
8.2
1,506 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $1,008Free CancellationRating
7.4
3,723 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,155Free CancellationRating
7.4
4,344 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,768Free CancellationRating
8.1
3,568 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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