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$479+ Cheap flights from Seattle (SEA) to Kolkata (CCU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
Aug 15 — Aug 221
Sat 8/15
Sat 8/22
1 adult, Economy
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Cheap flight deals from Seattle to Kolkata

Cheapest flights from Seattle to Kolkata
Explore the most affordable flight options available from Seattle to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.

This oojo deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:18 am
SEA
-
CCU
2 stops26h 47m
Multiple Airlines
Wed 9/3011:30 pm
CCU
-
SEA
1 stop21h 45m
Multiple Airlines
Deal found 7/14$993
This Indian Eagle deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:45 pm
SEA
-
CCU
2 stops38h 40m
Etihad Airways
Wed 9/99:30 pm
CCU
-
SEA
2 stops35h 42m
Etihad Airways
Deal found 7/16$1,049
This Trip.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:45 am
SEA
-
CCU
2 stops25h 35m
Multiple Airlines
Wed 11/1812:50 am
CCU
-
SEA
2 stops43h 50m
Multiple Airlines
Deal found 7/14$1,073
This Indian Eagle deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:55 pm
SEA
-
CCU
2 stops38h 30m
Etihad Airways
Wed 9/309:30 pm
CCU
-
SEA
2 stops35h 42m
Etihad Airways
Deal found 7/13$1,074
This Etihad Airways deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:55 pm
SEA
-
CCU
2 stops32h 05m
Etihad Airways
Sat 9/193:50 am
CCU
-
SEA
2 stops53h 22m
Etihad Airways
Deal found 7/12$1,080
This oojo deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:15 am
SEA
-
CCU
1 stop23h 50m
Singapore Airlines
Wed 9/3011:30 pm
CCU
-
SEA
1 stop21h 45m
Singapore Airlines
Deal found 7/14$1,084
This Etihad Airways deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:45 pm
SEA
-
CCU
2 stops38h 40m
Multiple Airlines
Wed 9/99:30 pm
CCU
-
SEA
2 stops37h 38m
Multiple Airlines
Deal found 7/16$1,092
This oojo deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:45 am
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Sun 11/2911:40 pm
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 7/11$1,131
This oojo deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:45 am
SEA
-
CCU
1 stop24h 10m
Singapore Airlines
Sun 11/1511:40 pm
CCU
-
SEA
1 stop45h 00m
Singapore Airlines
Deal found 7/11$1,170
This Trip.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:20 pm
SEA
-
CCU
2 stops22h 55m
Multiple Airlines
Mon 8/242:00 am
CCU
-
SEA
2 stops45h 30m
Multiple Airlines
Deal found 7/12$1,188
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:15 am
SEA
-
CCU
1 stop23h 50m
Multiple Airlines
Wed 9/3011:55 am
CCU
-
SEA
2 stops40h 45m
Multiple Airlines
Deal found 7/14$1,205

Find flight deals from Seattle to Kolkata

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Kolkata (CCU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$993
(oojo)

One-way from

$479
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,302
Provider with most accurate pricing for Seattle/Tacoma Intl-Kolkata Netaji S. Chandra flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kolkata Netaji S. Chandra flights.
Search Deals
From Seattle/Tacoma Intl to Kolkata Netaji S. Chandra
Search Deals
One-way flight from Seattle/Tacoma Intl to Kolkata Netaji S. Chandra
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 16, 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

Wed 9/16

11:55 pm-8:30 pm

2 stops32h 05m

Kolkata Netaji S. Chandra

Sat 9/19

3:50 am-8:42 pm

2 stops53h 22m

$1,080

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 11/9

7:05 pm-3:45 pm

2 stops31h 10m

Kolkata Netaji S. Chandra

Sat 11/21

9:30 pm-5:10 pm

2 stops33h 10m

$1,248
Quickest round-trip

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 11/15

7:05 pm-12:25 pm

2 stops27h 50m

Kolkata Netaji S. Chandra

Thu 11/26

8:45 pm-5:10 pm

2 stops33h 55m

$1,278

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 11/20

7:05 pm-12:25 pm

2 stops27h 50m

Kolkata Netaji S. Chandra

Fri 12/25

8:45 pm-5:10 pm

2 stops33h 55m

$1,344

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 11/20

7:05 pm-3:45 pm

2 stops31h 10m

Kolkata Netaji S. Chandra

Sat 12/26

9:30 pm-5:10 pm

2 stops33h 10m

$1,379

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 11/28

7:05 pm-3:45 pm

2 stops31h 10m

Kolkata Netaji S. Chandra

Sun 12/27

6:30 pm-5:10 pm

2 stops36h 10m

$1,394
Cheapest one-way

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 8/30

10:15 am-8:15 am

3 stops33h 30m

$582

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 8/26

7:15 pm-12:30 pm

2 stops28h 45m

$632

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 8/18

7:15 pm-9:55 pm

3 stops38h 10m

$633

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 8/21

7:15 pm-12:30 pm

2 stops28h 45m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Kolkata

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Kolkata in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Kolkata flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Kolkata flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Kolkata flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Kolkata flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Kolkata flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Kolkata

How far ahead should I book a flight from Seattle to Kolkata?

The best time to book flights from Seattle to Kolkata is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Kolkata?

Currently, March is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $922). Flying from Seattle to Kolkata in December is currently the most expensive (average of $1,909). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Kolkata?

Reviews of airlines servicing Kolkata

Get insights into the airlines that provide service to Kolkata. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kolkata. Reviews last updated July 16, 2026.
Read through reviews of airlines operating flights from Seattle to Kolkata, such as Singapore Airlines and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very good
1,573 reviews

Entertainment

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Singapore Airlines
8.2
Very good
1,573 reviews
Singapore Airlines
8.2
Very good
1,573 reviews

Entertainment

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Qatar Airways
7.3
Good
3,743 reviews
Singapore Airlines
8.2
Very good
1,573 reviews

Entertainment

8.1

Boarding

8.3

Food

7.8

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Kolkata. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Kolkata?

    Airlines like Etihad Airways and Turkish Airlines fly from Seattle to Kolkata in about 31h 10m. The time it takes to get you to your destination can typically vary by up to 55m. Airlines will cover a distance of 7224 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Kolkata round-trip?

    Our cheapest airline available from Seattle to Kolkata is Singapore Airlines. Our recent data shows that you can find tickets from as low as $717 on this airline. An additional option worth looking into is Qatar Airways, starting at $1,072. Singapore Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Kolkata one-way?

    The cheapest airline one-way is Singapore Airlines, with whom users have recently found tickets for as low as $344. However, be on the lookout for offers from Qatar Airways and Turkish Airlines, as they are both options that can get you from Seattle to Kolkata for a low price.

  • Can I find deals for flights from Seattle to Kolkata that include hotel bookings?

    Yes. In addition to deals on Seattle to Kolkata flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Kolkata?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Kolkata.

  • Can I find deals for business class flights from Seattle to Kolkata?

    Yes. Cheapflights offers flight deals from Seattle to Kolkata by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Kolkata?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $922). Flying from Seattle to Kolkata in December is currently the most expensive (average of $1,909). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Kolkata

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Kolkata flights

Top 2 airlines flying from Seattle to Kolkata

Discover the top 2 airlines that operate flights from Seattle to Kolkata. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$717Average$1,080FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,072Average$1,183FlexibilityNo cancel feeOn-time68%

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