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$406+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Kolkata Netaji S. Chandra are usually found in September or February, booked 82 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap 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 August 20, 2025.

Round-trip from

$818
(FlightHub)

One-way from

$406
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,256
From Seattle/Tacoma Intl to Kolkata Netaji S. Chandra
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One-way flight from Seattle/Tacoma Intl to Kolkata Netaji S. Chandra
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Highest demand for flights based on searches. 14% potential increase in price ($207 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($80 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 20, 2025.

This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Wed 11/2611:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 8/20$818
This oojo deal was found by Cheapflights users on 8/20. 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.
Tue 10/289:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Tue 12/911:40 pmCCU - SEA
1 stop45h 00mSingapore Airlines
Deal found 8/20$904
This oojo deal was found by Cheapflights users on 8/20. 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.
Tue 10/289:45 amSEA - CCU
1 stop24h 10mMultiple Airlines
Tue 12/911:40 pmCCU - SEA
2 stops30h 26mMultiple Airlines
Deal found 8/20$909
This oojo deal was found by Cheapflights users on 8/18. 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 11/238:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Mon 12/811:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 8/18$917
This Trip.com deal was found by Cheapflights users on 8/19. 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.
Sat 9/202:15 pmSEA - CCU
2 stops45h 14mMultiple Airlines
Fri 10/312:30 amCCU - SEA
2 stops48h 30mMultiple Airlines
Deal found 8/19$971
This Indian Eagle deal was found by Cheapflights users on 8/20. 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.
Tue 11/48:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Mon 11/2411:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 8/20$978
This Justfly.com deal was found by Cheapflights users on 8/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Sun 12/1411:40 pmCCU - SEA
1 stop45h 00mSingapore Airlines
Deal found 8/19$983
This Indian Eagle deal was found by Cheapflights users on 8/18. 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.
Sat 8/3012:59 amSEA - CCU
2 stops31h 01mMultiple Airlines
Mon 10/610:10 amCCU - SEA
2 stops40h 59mMultiple Airlines
Deal found 8/18$1,007
This oojo deal was found by Cheapflights users on 8/18. 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.
Sat 9/2011:59 pmSEA - CCU
2 stops32h 01mAir India
Sat 10/47:00 amCCU - SEA
2 stops51h 50mAir India
Deal found 8/18$1,010

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 August 20, 2025.
Use the filters below to find and compare flights from Seattle to Kolkata that are best for you.

Fly from

Seattle

Fly to

Kolkata

Route

Depart

Return

Price

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 11/4

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Wed 11/26

11:40 pm-7:10 am

1 stop21h 00m

$818

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 11/2

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Tue 11/25

11:40 pm-7:10 am

1 stop45h 00m

$904

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 10/28

9:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Tue 12/9

11:40 pm-7:10 am

1 stop45h 00m

$904

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 10/28

9:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Tue 12/9

11:40 pm-4:36 pm

2 stops30h 26m

$909

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 9/20

2:15 pm-11:59 pm

2 stops45h 14m

Kolkata Netaji S. Chandra

Fri 10/3

12:30 am-12:30 pm

2 stops48h 30m

$971

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 11/4

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 11/24

11:40 pm-7:10 am

1 stop21h 00m

$978

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 11/6

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 11/24

11:40 pm-7:10 am

1 stop21h 00m

$978

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 11/18

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Sun 12/14

11:40 pm-7:10 am

1 stop45h 00m

$983

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 8/30

12:59 am-8:30 pm

2 stops31h 01m

Kolkata Netaji S. Chandra

Mon 10/6

10:10 am-2:39 pm

2 stops40h 59m

$1,007

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 9/20

11:59 pm-8:30 pm

2 stops32h 01m

Kolkata Netaji S. Chandra

Sat 10/4

7:00 am-10:20 pm

2 stops51h 50m

$1,010

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 20 results
1
2

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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Kolkata. Price data was last updated on August 8, 2025.

The best time to book flights from Seattle to Kolkata is 82 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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $974). Flying from Seattle to Kolkata in December is currently the most expensive (average of $1,647). 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.

What is the cheapest time of day to fly from SEA to CCU?

Find hourly flight availability from Seattle to Kolkata. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Seattle to Kolkata, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 27% versus a flight in the morning.

What is the cheapest day to fly from Seattle to Kolkata?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Kolkata. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Kolkata flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 August 20, 2025.
Read through reviews of airlines operating flights from Seattle to Kolkata, such as Emirates, Singapore Airlines, and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,317 reviews

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,317 reviews
Emirates
8.1
Very good
3,317 reviews

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Singapore Airlines
8.1
Very good
1,347 reviews
Emirates
8.1
Very good
3,317 reviews

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,611 reviews
Emirates
8.1
Very good
3,317 reviews

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
3,949 reviews
Emirates
8.1
Very good
3,317 reviews

Overall

8.1

Food

7.8

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 Singapore Airlines fly from Seattle to Kolkata in about 24h 10m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 7224 mi.

  • 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 $733 on this airline. Additional options worth looking into are Turkish Airlines and Qatar Airways, starting at $1,137 and $1,485 round-trip. Singapore Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $974). Flying from Seattle to Kolkata in December is currently the most expensive (average of $1,647). 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

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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
Spokane to Kolkata flights

Top 4 airlines flying from Seattle to Kolkata

Discover the top 4 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$733Average$1,156FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,137Average$1,325FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,485Average$3,221FlexibilityNo cancel feeOn-time68%
EmiratesCheapest$1,497Average$2,654FlexibilityNo cancel feeOn-time75%

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