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Cheap flights from Seattle to Kolkata from $510

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 9/11. 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.
Multiple Airlines Logo
10:01 pm - 7:55 pm
SEA
-
CCU
33h 24m
2 stops
Multiple Airlines Logo
8:30 am - 4:11 pm
CCU
-
SEA
44h 11m
2 stops
$1,042Multiple Airlines
Tue, Sep 15 - Tue, Sep 29
Multiple Airlines Logo
3:10 pm - 7:55 pm
SEA
-
CCU
39h 15m
2 stops
Multiple Airlines Logo
9:00 pm - 1:20 pm
CCU
-
SEA
29h 50m
2 stops
$1,058Multiple Airlines
Wed, Jan 20 - Sat, Feb 20
Singapore Airlines Logo
8:45 am - 10:25 pm
SEA
-
CCU
48h 10m
1 stop
Singapore Airlines Logo
11:40 pm - 7:10 am
CCU
-
SEA
21h 00m
1 stop
$1,060Singapore Airlines
Tue, Jan 26 - Mon, Feb 1
Etihad Airways Logo
11:41 pm - 8:30 pm
SEA
-
CCU
32h 19m
2 stops
Etihad Airways Logo
9:30 pm - 8:42 pm
CCU
-
SEA
35h 42m
2 stops
$1,069Etihad Airways
Fri, Sep 4 - Fri, Sep 18
Etihad Airways Logo
11:40 pm - 2:55 am
SEA
-
CCU
38h 45m
2 stops
Etihad Airways Logo
3:50 am - 8:42 pm
CCU
-
SEA
53h 22m
2 stops
$1,076Etihad Airways
Thu, Sep 3 - Fri, Sep 18
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
$1,166Singapore Airlines
Wed, Jan 20 - Sat, Feb 20
Singapore Airlines Logo
10:15 am - 10:35 pm
SEA
-
CCU
23h 50m
1 stop
Singapore Airlines Logo
11:40 pm - 7:10 am
CCU
-
SEA
21h 00m
1 stop
$1,186Singapore Airlines
Thu, Sep 24 - Tue, Nov 3
Qatar Airways Logo
4:25 pm - 2:30 am
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
4:00 am - 12:45 pm
CCU
-
SEA
21h 15m
1 stop
$1,317Qatar Airways
Tue, Aug 25 - Wed, Sep 16
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
$1,318Qatar Airways
Thu, Oct 8 - Thu, Nov 5
Qatar Airways Logo
4:25 pm - 2:30 am
SEA
-
CCU
21h 35m
1 stop
Qatar Airways Logo
4:00 am - 12:45 pm
CCU
-
SEA
21h 15m
1 stop
$1,318Qatar Airways
Tue, Sep 15 - Tue, Sep 29

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Etihad Airways flights from Seattle to Kolkata

Our best Etihad Airways deals on Seattle to Kolkata flight tickets
Etihad Airways
Sep 4
SEA11:41 pmSeattle/Tacoma Intl
32h 19m
2 stops
CCU8:30 pmKolkata Netaji S. Chandra
Sep 18
CCU9:30 pmKolkata Netaji S. Chandra
35h 42m
2 stops
SEA8:42 pmSeattle/Tacoma Intl
$1,069
Etihad Airways
Aug 27
SEA11:45 pmSeattle/Tacoma Intl
38h 40m
2 stops
CCU2:55 amKolkata Netaji S. Chandra
Sep 18
CCU3:50 amKolkata Netaji S. Chandra
53h 22m
2 stops
SEA8:42 pmSeattle/Tacoma Intl
$1,076
Etihad Airways
Sep 2
SEA11:45 pmSeattle/Tacoma Intl
32h 15m
2 stops
CCU8:30 pmKolkata Netaji S. Chandra
Sep 19
CCU3:50 amKolkata Netaji S. Chandra
53h 22m
2 stops
SEA8:42 pmSeattle/Tacoma Intl
$1,079

Turkish Airlines flights from Seattle to Kolkata

Our best Turkish Airlines deals on Seattle to Kolkata flight tickets
Turkish Airlines
Sep 6
SEA7:15 pmSeattle/Tacoma Intl
28h 45m
2 stops
CCU12:30 pmKolkata Netaji S. Chandra
Sep 21
CCU10:30 pmKolkata Netaji S. Chandra
31h 20m
2 stops
SEA5:20 pmSeattle/Tacoma Intl
$1,248
Turkish Airlines
Oct 23
SEA7:15 pmSeattle/Tacoma Intl
28h 40m
2 stops
CCU12:25 pmKolkata Netaji S. Chandra
Nov 20
CCU10:30 pmKolkata Netaji S. Chandra
32h 10m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$1,298

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 31, 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 9/15

10:01 pm-7:55 pm

2 stops33h 24m

Kolkata Netaji S. Chandra

Tue 9/29

8:30 am-4:11 pm

2 stops44h 11m

$1,042

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 1/20

3:10 pm-7:55 pm

2 stops39h 15m

Kolkata Netaji S. Chandra

Sat 2/20

9:00 pm-1:20 pm

2 stops29h 50m

$1,058

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 1/26

8:45 am-10:25 pm

1 stop48h 10m

Kolkata Netaji S. Chandra

Mon 2/1

11:40 pm-7:10 am

1 stop21h 00m

$1,060

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 9/4

11:41 pm-8:30 pm

2 stops32h 19m

Kolkata Netaji S. Chandra

Fri 9/18

9:30 pm-8:42 pm

2 stops35h 42m

$1,069

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 9/3

11:40 pm-2:55 am

2 stops38h 45m

Kolkata Netaji S. Chandra

Fri 9/18

3:50 am-8:42 pm

2 stops53h 22m

$1,076

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 1/20

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Sat 2/20

11:40 pm-7:10 am

1 stop21h 00m

$1,166

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 9/24

10:15 am-10:35 pm

1 stop23h 50m

Kolkata Netaji S. Chandra

Tue 11/3

11:40 pm-7:10 am

1 stop21h 00m

$1,186
Quickest round-trip

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 8/25

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Wed 9/16

4:00 am-12:45 pm

1 stop21h 15m

$1,317

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 10/8

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Thu 11/5

3:25 am-11:40 am

1 stop21h 45m

$1,318

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 9/15

4:25 pm-2:30 am

1 stop21h 35m

Kolkata Netaji S. Chandra

Tue 9/29

4:00 am-12:45 pm

1 stop21h 15m

$1,318

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?

Prices are currently low for flights on this route.

Typical prices usually range from $1,170 to $2,091.
The lowest price recently found on this route was $1,042.

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 April instead. Flights to Kolkata in April, while not as cheap as those in March, still average around $991.

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 $1,158 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 $852 on momondo.

Can stopping save me money on Seattle to Kolkata flights?

You could potentially save up to 2% 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

24h 10m

Direct flights

None
The fastest flight from Seattle to Kolkata takes 24h 10m
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. 24h 10m 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
1,584 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $1,072Free CancellationRating
7.4
3,739 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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