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$345+ 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 55 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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 November 20, 2025.

This Trip.com deal was found by Cheapflights users on 11/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2212:10 amSEA - CCU
2 stops35h 55mMultiple Airlines
Sun 12/72:35 amCCU - SEA
2 stops24h 50mMultiple Airlines
Deal found 11/18$945
This Trip.com deal was found by Cheapflights users on 11/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:10 amSEA - CCU
2 stops35h 55mMultiple Airlines
Sun 12/72:35 amCCU - SEA
2 stops29h 05mMultiple Airlines
Deal found 11/18$970
This Trip.com deal was found by Cheapflights users on 11/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/210:00 amSEA - CCU
2 stops32h 20mMultiple Airlines
Fri 12/510:00 pmCCU - SEA
2 stops23h 30mMultiple Airlines
Deal found 11/18$1,136

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 November 20, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$784
(oojo)

One-way from

$345
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,122
Provider with most accurate pricing for Seattle/Tacoma Intl-Kolkata Netaji S. Chandra flight deals.
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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. 13% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 November 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

Sun 2/1

8:50 pm-10:25 pm

2 stops36h 05m

Kolkata Netaji S. Chandra

Sat 3/7

11:40 pm-7:10 am

1 stop21h 00m

$1,022

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 1/7

2:10 pm-9:55 am

2 stops30h 15m

Kolkata Netaji S. Chandra

Wed 1/28

8:15 pm-11:25 am

2 stops28h 40m

$1,143

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 1/7

2:10 pm-9:55 am

2 stops30h 15m

Kolkata Netaji S. Chandra

Mon 1/26

8:15 pm-11:25 am

2 stops28h 40m

$1,143

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 1/5

2:10 pm-7:45 am

2 stops28h 05m

Kolkata Netaji S. Chandra

Mon 1/26

8:15 pm-11:50 am

2 stops29h 05m

$1,143

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 2/19

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Mon 2/23

11:40 pm-7:10 am

1 stop21h 00m

$1,199

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 4/24

9:25 pm-10:15 pm

2 stops36h 20m

Kolkata Netaji S. Chandra

Sat 5/9

11:30 pm-6:47 pm

3 stops31h 47m

$1,218

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 2/3

9:20 pm-10:25 pm

2 stops35h 35m

Kolkata Netaji S. Chandra

Tue 2/10

11:40 pm-6:42 pm

3 stops32h 32m

$1,324

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 1/31

8:45 am-10:25 pm

1 stop24h 10m

$370

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 2/12

8:45 am-10:25 pm

1 stop24h 10m

$429

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 1/17

8:45 am-11:50 pm

2 stops25h 35m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 16 results
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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
GurufarePrice Accuracy2 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*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 Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Seattle-Kolkata flight deals on Cheapflights vs. Justfly.com >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 Justfly.com the most. Justfly.com 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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Kolkata. Price data was last updated on November 14, 2025.

The best time to book flights from Seattle to Kolkata is 55 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 $586). Flying from Seattle to Kolkata in June is currently the most expensive (average of $1,091). 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 November 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 in the evening, which can drop the price by up to 53% 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 November 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
3,419 reviews

Overall

8.1

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

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
3,419 reviews
Emirates
8.1
Very good
3,419 reviews

Overall

8.1

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

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
1,407 reviews
Emirates
8.1
Very good
3,419 reviews

Overall

8.1

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

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
3,664 reviews
Emirates
8.1
Very good
3,419 reviews

Overall

8.1

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

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
4,043 reviews
Emirates
8.1
Very good
3,419 reviews

Overall

8.1

Boarding

8.1

Crew

8.3

Entertainment

8.2

Comfort

8.0

Food

7.9

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 KLM fly from Seattle to Kolkata in about 30h 15m. 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 $717 on this airline. Additional options worth looking into are Qatar Airways and Turkish Airlines, starting at $1,102 and $1,137 round-trip. Singapore Airlines is 37% 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 $586). Flying from Seattle to Kolkata in June is currently the most expensive (average of $1,091). 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$717Average$1,103FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,102Average$2,890FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,137Average$1,262FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,497Average$2,773FlexibilityNo cancel feeOn-time75%

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