Question 1

What’s the cheapest layover airport for flights from Seattle to Kolkata?

Accepted Answer

Singapore (SIN) is the most affordable 1-stop option, with an average round-trip price of C$ 1,281.

Question 2

What’s the fastest layover option from Seattle to Kolkata?

Accepted Answer

Flights via Doha (DOH) have the shortest average one-way travel time for 1-stop routes: 20h 10m.

Question 3

Which airport typically offers the quickest layover for flights from Seattle to Kolkata?

Accepted Answer

Flights via Doha (DOH) offer the fastest connection on this route, with an average layover time of 1h 18m.

Question 4

What’s the top layover airport for flights from Seattle to Kolkata?

Accepted Answer

Singapore (SIN) – chosen by Cheapflights users on 71% of one-stop itineraries from Seattle to Kolkata on Cheapflights.

Question 5

What is the cheapest airline to fly from Seattle to Kolkata round-trip?

Accepted Answer

Currently priced at C$ 1,089, Singapore Airlines will fly you from Seattle to Kolkata and back. In addition to Singapore Airlines, many other airlines offer competitively priced options for your trip. Singapore Airlines is currently priced 35% below the average price you’ll pay for this route.

Question 6

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

Accepted Answer

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Kolkata. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 7

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

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from Seattle to Kolkata (average of C$ 1,137). Flying from Seattle to Kolkata in December is currently the most expensive (average of C$ 1,822). 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.

Question 8

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

Accepted Answer

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

Question 9

E

Accepted Answer

In terms of precipitation, rainfall in Kolkata ranges from 7.0 - 356.0 mm per month. August is typically the wettest month, when rainfall can reach 356.0 mm. December is typically the driest time to visit Kolkata when rainfall is around 7.0 mm.

Question 10

E

Accepted Answer

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 31.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

Question 11

What is the cheapest day to fly round-trip from Seattle to Kolkata?

Accepted Answer

Departing on a Saturday is a good option for securing a great price. You can expect to save up to 35% when planning your travel around this day of the week.

Question 12

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

Accepted Answer

To save on the cost of your flight from Seattle to Kolkata, book at least 22 days before your planned departure. Booking around this time can save you about 17% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 1,405 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 3,009.

Question 13

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

Accepted Answer

September is one of the best times of the year to fly to Kolkata from Seattle. Prices for September average C$ 1,681 per person but you can even find prices for as low as C$ 810. The most expensive prices can be found in the month of December. Opting for a September flight can save you 72% on your journey compared to booking in December

Question 14

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

Accepted Answer

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 morning, which can drop the price by up to 24% versus a flight at noon.

Question 15

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

Accepted Answer

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

Question 16

How can I find direct flights from Seattle to Kolkata?

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

How does Cheapflights help users find flights from Seattle to Kolkata?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Kolkata from Seattle today with Cheapflights!

Question 19

Why should you use Cheapflights to find cheap flight tickets from Seattle to Kolkata?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Seattle to Kolkata by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 20

Can Cheapflights find flights from Seattle to Kolkata with no change fees?

Accepted Answer

Need flexible booking options for your flight to Kolkata from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 21

Can Cheapflights notify me if prices for flights from Seattle to Kolkata become cheaper?

Accepted Answer

Yes! Start tracking prices for Seattle to Kolkata flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Popular in	December
Cheapest in	September
Average price	C$ 1,735

Cheap flights from Seattle to Kolkata

Cheap flight deals from Seattle to Kolkata

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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.

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 8 August 2025.

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

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 18 August 2025.

What’s the top layover airport for flights from Seattle to Kolkata?

Share of one-stop round-trip flights from Seattle to Kolkata chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Seattle to Kolkata?

Average round-trip fare for 1-stop flights from Seattle to Kolkata, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Seattle to Kolkata?

Shortest average travel time for 1-stop one-way flights from Seattle to Kolkata, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Seattle to Kolkata?

Average layover duration for 1-stop one-way flights from Seattle to Kolkata, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Kolkata

Check out reviews from past customers who have flown with Singapore Airlines from Seattle to Kolkata to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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 is the cheapest airline to fly from Seattle to Kolkata round-trip?

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

How can I find direct flights from Seattle to Kolkata?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Complete your trip to Kolkata by adding a car rental and/or hotel reservation to your travel itinerary.

Top airline flying from Seattle to Kolkata

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How does Cheapflights help users find flights from Seattle to Kolkata?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Kolkata?

Can Cheapflights find flights from Seattle to Kolkata with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Kolkata become cheaper?

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