HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kolkata

$350+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CCU
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Kolkata with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,047
(Orbitz)

One-way from

$350
(Ovago)

Popular in

December

Cheapest in

September

Average price

$1,131
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. 15% potential increase in price ($226 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($88 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 March 31, 2025.

This Justfly.com deal was found by Cheapflights users on 3/31. 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.
Thu 11/68:45 amSEA - CCU
1 stop24h 10mSingapore Airlines
Fri 11/1411:40 pmCCU - SEA
1 stop21h 00mSingapore Airlines
Deal found 3/31$684
This Orbitz deal was found by Cheapflights users on 3/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/303:36 pmSEA - CCU
2 stops29h 24mMultiple Airlines
Wed 5/288:55 pmCCU - SEA
2 stops30h 13mMultiple Airlines
Deal found 3/30$1,047
This Etihad Airways deal was found by Cheapflights users on 3/30. 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.
Mon 4/2811:55 pmSEA - CCU
2 stops31h 55mEtihad Airways
Tue 5/273:45 amCCU - SEA
2 stops53h 39mEtihad Airways
Deal found 3/30$1,228
This Justfly.com deal was found by Cheapflights users on 3/30. 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 4/297:10 pmSEA - CCU
2 stops28h 35mTurkish Airlines
Wed 5/2110:30 pmCCU - SEA
2 stops31h 15mTurkish Airlines
Deal found 3/30$1,254
This Indian Eagle deal was found by Cheapflights users on 3/30. 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.
Mon 4/212:15 pmSEA - CCU
2 stops30h 15mLufthansa
Thu 5/19:20 pmCCU - SEA
2 stops32h 09mLufthansa
Deal found 3/30$1,422

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 March 31, 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

Wed 4/30

3:36 pm-9:30 am

2 stops29h 24m

Kolkata Netaji S. Chandra

Wed 5/28

8:55 pm-2:38 pm

2 stops30h 13m

$1,047

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 5/6

7:00 am-10:15 pm

2 stops26h 45m

Kolkata Netaji S. Chandra

Wed 7/9

11:30 pm-8:45 am

1 stop21h 45m

$1,076

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 4/28

11:55 pm-8:20 pm

2 stops31h 55m

Kolkata Netaji S. Chandra

Tue 5/27

3:45 am-8:54 pm

2 stops53h 39m

$1,228

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Tue 4/29

7:10 pm-12:15 pm

2 stops28h 35m

Kolkata Netaji S. Chandra

Wed 5/21

10:30 pm-5:15 pm

2 stops31h 15m

$1,254

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 4/21

2:15 pm-9:00 am

2 stops30h 15m

Kolkata Netaji S. Chandra

Thu 5/1

9:20 pm-4:59 pm

2 stops32h 09m

$1,422

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sun 4/27

10:15 am-10:15 pm

1 stop23h 30m

$350

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/30

11:59 pm-6:05 pm

2 stops29h 36m

$427

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Sat 5/3

7:10 pm-12:55 pm

2 stops29h 15m

$622

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Mon 4/28

5:15 pm-8:10 am

1 stop26h 25m

$947

SeattleKolkata

SEA - CCU

SEACCU

Seattle/Tacoma Intl

Wed 4/16

4:30 pm-2:20 am

1 stop21h 20m

$1,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 12 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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
GurufarePrice 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 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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Kolkata. Price data was last updated on March 28, 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 $989). 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 March 31, 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 afternoon, which can drop the price by up to 27% versus a flight at noon.

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.

Rainfall in Kolkata by month

Plan your trip to Kolkata by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kolkata ranges from 0.3 - 14.0 inches per month. August is typically the wettest month, when rainfall can reach 14.0 in. December is typically the driest time to visit Kolkata when rainfall is around 0.3 in.

Temperature in Kolkata by month

Plan your trip to Kolkata by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kolkata, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 87.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 March 31, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Emirates and Thai Airways from Seattle to Kolkata by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.1
Very good
1,286 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Emirates
8.0
Very good
3,192 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Thai Airways
7.8
Good
319 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Qatar Airways
7.4
Good
3,541 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Etihad Airways
7.4
Good
1,181 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Overall

8.1

Food

7.7

Crew

8.6

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

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.

  • 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 $1,076 on this airline. Additional options worth looking into are Etihad Airways and Turkish Airlines, starting at $1,228 and $1,254 round-trip. Singapore Airlines is 15% 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 $350. However, be on the lookout for offers from Turkish Airlines and Emirates, 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, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of $989). 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

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
Spokane to Kolkata flights

Top 5 airlines flying from Seattle to Kolkata

Discover the top 5 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$759Average$1,141FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,137Average$2,129FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,334Average$2,715FlexibilityNo cancel feeOn-time68%
LufthansaCheapest$1,463Average$1,575FlexibilityNo cancel feeOn-time76%
EmiratesCheapest$1,497Average$2,654FlexibilityNo cancel feeOn-time75%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.