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$376+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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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 January 8, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$902
(oojo)

One-way from

$376
(Singapore Airlines)

Popular in

December

Cheapest in

September

Average price

$931
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.
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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. 4% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 8, 2026.

This Indian Eagle deal was found by Cheapflights users on 1/7. 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 10/1310:15 amSEA - CCU
1 stop23h 30mSingapore Airlines
Sat 10/2411:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 1/7$826
This Indian Eagle deal was found by Cheapflights users on 1/6. 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 10/1510:15 amSEA - CCU
1 stop23h 30mSingapore Airlines
Sat 10/2411:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 1/6$871
This oojo deal was found by Cheapflights users on 1/6. 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.
Fri 4/2410:15 amSEA - CCU
1 stop23h 30mSingapore Airlines
Sat 5/911:40 pmCCU - SEA
1 stop21h 35mSingapore Airlines
Deal found 1/6$902
This oojo deal was found by Cheapflights users on 1/6. 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.
Fri 4/249:24 pmSEA - CCU
2 stops36h 21mMultiple Airlines
Sat 5/911:40 pmCCU - SEA
1 stop21h 35mMultiple Airlines
Deal found 1/6$906
This oojo deal was found by Cheapflights users on 1/6. 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.
Thu 4/910:15 amSEA - CCU
1 stop47h 30mMultiple Airlines
Sun 5/311:40 pmCCU - SEA
2 stops32h 36mMultiple Airlines
Deal found 1/6$908
This Indian Eagle deal was found by Cheapflights users on 1/7. 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.
Sun 3/89:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Sun 3/1511:40 pmCCU - SEA
1 stop45h 00mSingapore Airlines
Deal found 1/7$921
This oojo deal was found by Cheapflights users on 1/6. 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.
Thu 4/910:15 amSEA - CCU
1 stop47h 30mSingapore Airlines
Sun 5/311:40 pmCCU - SEA
1 stop45h 35mSingapore Airlines
Deal found 1/6$925
This Justfly.com deal was found by Cheapflights users on 1/7. 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.
Sat 2/218:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Mon 3/3011:30 pmCCU - SEA
1 stop21h 45mSingapore Airlines
Deal found 1/7$927
This oojo deal was found by Cheapflights users on 1/7. 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 3/89:45 amSEA - CCU
1 stop24h 10mMultiple Airlines
Sun 3/1511:40 pmCCU - SEA
2 stops26h 45mMultiple Airlines
Deal found 1/7$948
This oojo deal was found by Cheapflights users on 1/7. 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 2/228:45 amSEA - CCU
1 stop24h 10mMultiple Airlines
Sun 3/111:40 pmCCU - SEA
3 stops34h 48mMultiple Airlines
Deal found 1/7$955
This Air France deal was found by Cheapflights users on 1/7. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:40 pmSEA - CCU
2 stops30h 55mMultiple Airlines
Sat 4/47:05 pmCCU - SEA
2 stops29h 10mMultiple Airlines
Deal found 1/7$965

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 January 8, 2026.
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

Sat 3/7

8:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Sat 3/21

11:40 pm-8:10 am

1 stop21h 00m

$760

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 3/7

8:41 pm-10:25 pm

2 stops36h 14m

Kolkata Netaji S. Chandra

Sat 3/21

11:40 pm-8:10 am

1 stop21h 00m

$901

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Thu 2/19

1:40 pm-10:05 am

2 stops30h 55m

Kolkata Netaji S. Chandra

Sat 4/4

7:05 pm-11:45 am

2 stops29h 10m

$965

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 3/17

9:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Fri 4/3

11:30 pm-8:45 am

1 stop21h 45m

$972

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 2/15

3:05 pm-7:45 am

2 stops27h 10m

Kolkata Netaji S. Chandra

Tue 3/31

7:00 pm-4:30 pm

2 stops34h 00m

$1,046

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 2/20

3:05 pm-10:05 am

2 stops29h 30m

Kolkata Netaji S. Chandra

Tue 3/31

7:00 pm-4:30 pm

2 stops34h 00m

$1,046

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 2/4

3:05 pm-7:45 am

2 stops27h 10m

Kolkata Netaji S. Chandra

Mon 2/16

6:30 pm-11:25 am

2 stops30h 25m

$1,047

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 2/2

12:10 am-1:35 am

3 stops35h 55m

Kolkata Netaji S. Chandra

Tue 2/10

9:30 pm-7:16 pm

3 stops35h 16m

$1,109

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 3/17

9:45 am-10:25 pm

1 stop24h 10m

Kolkata Netaji S. Chandra

Thu 4/2

11:30 pm-8:45 am

1 stop21h 45m

$1,109

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Fri 2/20

3:05 pm-10:05 am

2 stops29h 30m

Kolkata Netaji S. Chandra

Mon 3/30

4:20 pm-11:15 am

2 stops31h 25m

$1,120

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 20 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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 January 2, 2026.

The best time to book flights from Seattle to Kolkata is 62 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, October is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $605). Flying from Seattle to Kolkata in June is currently the most expensive (average of $1,107). 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 January 8, 2026.
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
3,462 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Overall

8.1

Boarding

8.1

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
3,462 reviews
Emirates
8.1
Very good
3,462 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Overall

8.1

Boarding

8.1

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
1,429 reviews
Emirates
8.1
Very good
3,462 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Overall

8.1

Boarding

8.1

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
3,701 reviews
Emirates
8.1
Very good
3,462 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Overall

8.1

Boarding

8.1

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
4,150 reviews
Emirates
8.1
Very good
3,462 reviews

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Overall

8.1

Boarding

8.1

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 and KLM 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 3h. 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 $718 on this airline. Additional options worth looking into are Qatar Airways and Turkish Airlines, starting at $728 and $1,137 round-trip. Singapore Airlines is 36% 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 $334. However, be on the lookout for offers from Turkish Airlines and Qatar Airways, 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, October is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $605). Flying from Seattle to Kolkata in June is currently the most expensive (average of $1,107). 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$718Average$1,121FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$897Average$2,178FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,137Average$1,293FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,497Average$3,064FlexibilityNo cancel feeOn-time75%

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