SEA - CCU

C$ 857 Find Cheap Flights from Seattle to Kolkata – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 1,522
Typical prices: C$ 1,371-C$ 2,149
Multiple Airlines
Sun 4/3Tue 20/3
SEA - CCU • 2 stops
Cheapest one-way flights
C$ 857
Typical prices: C$ 864-C$ 1,722
Multiple Airlines
Sun 25/11
SEA - CCU • 2 stops
When to book
in advance
Our data shows that travellers who book at least 18 weeks in advance save around 45% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 1,790 (round-trip)
Shortest trip • 21h 06m (one-way)
Insights
Insights
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We hope you enjoy your trip to Kolkata!
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Flight Deals

Cheap Flights from Seattle to Kolkata (SEA-CCU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Kolkata

Thu, 4 Mar - Sat, 20 Mar
Multiple Airlines Logo
11:30 p.m. - 9:00 a.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
44h 00m2 stops Taipei City Taiwan Taoyuan Intl New Delhi Indira Gandhi Intl
Multiple Airlines Logo
7:05 p.m. - 7:20 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
60h 45m2 stops New Delhi Indira Gandhi Intl Taipei City Taiwan Taoyuan Intl
C$ 1,522Multiple Airlines
Sat, 9 Jan - Fri, 19 Feb
Turkish Airlines Logo
7:05 p.m. - 3:20 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
30h 45m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
6:45 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
35h 55m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,689Turkish Airlines
Tue, 24 Nov - Tue, 19 Jan
Turkish Airlines Logo
7:05 p.m. - 12:50 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
28h 15m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
6:45 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
35h 55m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,689Turkish Airlines
Thu, 12 Nov - Mon, 30 Nov
Multiple Airlines Logo
11:30 p.m. - 4:15 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
27h 15m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:55 p.m. - 6:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
58h 45m2 stops New Delhi Indira Gandhi Intl Taipei City Taiwan Taoyuan Intl
C$ 1,692Multiple Airlines
Mon, 16 Nov - Mon, 7 Dec
Turkish Airlines Logo
7:05 p.m. - 12:50 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
28h 15m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
6:45 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
35h 55m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,731Turkish Airlines
Wed, 11 Nov - Tue, 8 Dec
Turkish Airlines Logo
7:05 p.m. - 3:20 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
30h 45m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
9:30 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
33h 10m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,731Turkish Airlines
Wed, 11 Nov - Sun, 6 Dec
Turkish Airlines Logo
7:05 p.m. - 12:50 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
28h 15m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
6:45 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
35h 55m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,731Turkish Airlines
Tue, 20 Oct - Sun, 6 Dec
Turkish Airlines Logo
7:15 p.m. - 3:30 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
31h 45m2 stops Istanbul Mumbai Chhatrapati Shivaji Intl
Turkish Airlines Logo
9:30 p.m. - 5:10 p.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
33h 10m2 stops Mumbai Chhatrapati Shivaji Intl Istanbul
C$ 1,731Turkish Airlines
Wed, 25 Nov - Thu, 21 Jan
Singapore Airlines Logo
8:40 a.m. - 10:30 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
24h 20m1 stop Singapore Changi
Singapore Airlines Logo
11:20 p.m. - 7:05 a.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
21h 15m1 stop Singapore Changi
C$ 2,319Singapore Airlines
Sat, 21 Nov - Tue, 19 Jan
Singapore Airlines Logo
8:40 a.m. - 10:25 p.m.SEA  Seattle/Tacoma Intl-CCU Kolkata Netaji S. Chandra
24h 15m1 stop Singapore Changi
Singapore Airlines Logo
11:20 p.m. - 7:05 a.m.CCU  Kolkata Netaji S. Chandra-SEA Seattle/Tacoma Intl
21h 15m1 stop Singapore Changi
C$ 2,504Singapore Airlines
Booking Insights

Price, demand, and travel trends for Seattle to Kolkata flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Seattle to Kolkata with more confidence.

What's the cheapest day of the week to fly from Seattle to Kolkata?

Sunday is the cheapest day of the week to fly from Seattle to Kolkata and is 8% cheaper than the average day. Wednesday is the most expensive day with flight prices 6% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • March is the cheapest month to fly from Seattle to Kolkata at C$ 1,279 round-trip.
  • December (C$ 2,563) and July (C$ 1,806) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 100% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Kolkata the cheapest?

Flights from Seattle to Kolkata are cheapest 18 weeks before departure. Booking in this window typically costs about 45% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Seattle to Kolkata flights

Low season

September

Cheapest flight

C$ 857
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly (57% more expensive on average)
Flights from Seattle to Kolkata

When to book flights from Seattle to Kolkata

Are your dates flexible? Find out the best times to travel from Seattle to Kolkata based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Kolkata flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What’s the easiest way to get from the city to Seattle–Tacoma International Airport?

    You can evade traffic and even save money on parking by purchasing a ticket or using an ORCA card to catch the Link light rail from downtown Seattle to the airport.

  • Where can I park at Seattle–Tacoma International Airport?

    Depending on your stay in Kolkata, you can use on-airport long-term parking lots like the General Parking on the 1st to 3rd floors and 5th to 8th floors. You can reserve covered parking lots at Sea-Tac’s official website.

  • Are there on-site car rental companies at Kolkata Airport?

    The only major car hire company on-site at Kolkata airport is Avis. However, a local car hire agency called Wenz has a counter in the Arrival Level operated by Wenz International Private Limited and offers a variety of choice vehicles.

  • Can I get a bus from Kolkata Airport to the city?

    Yes. The West Bengal Surface Transport Corporation (WBSTC) bus is a great alternative when you can’t hire a vehicle and need a cost-effective mode of transportation to downtown Kolkata from the airport. Services start at 8 am, and the last bus departs the airport at 9:30 pm.

  • Which airports can I use when flying from Seattle to Kolkata?

    Flights from Seattle to Kolkata usually depart from Seattle/Tacoma Intl (SEA) and arrive at Kolkata Netaji S. Chandra (CCU).

  • Which cabin classes can I book on flights from Seattle to Kolkata?

    Only Economy Class is available on flights from Seattle to Kolkata.

  • Which airports do connecting flights from Seattle to Kolkata pass through?

    One-stop flights from Seattle to Kolkata most commonly connect through:

    • Singapore Changi (SIN) – 80% of one-stop connections
    • Doha Hamad Intl (DOH) – 17% of one-stop connections
    • Dubai Intl (DXB) – 3% of one-stop connections

    Singapore Changi (SIN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Kolkata?

    On the Seattle to Kolkata route, being flexible with your departure day can save you up to 14%. Sunday is the cheapest day at C$ 1,501 round-trip on average, while Wednesday is the most expensive at C$ 1,738 – a C$ 237 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How expensive are last-minute Seattle to Kolkata flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 42% above the route average of C$ 1,629. Book 18 weeks before departure for the lowest fares.

  • How long does a flight from Seattle to Kolkata take?

    There are currently no direct flights available from Seattle to Kolkata. Flights with 1 layover take between 21h 06m and 27h 33m in total, depending on the connection.

  • Do I need a passport to fly from Seattle to Kolkata?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Seattle to Kolkata changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 1,522 to C$ 14,964. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Seattle to Kolkata looking right now?

    One-way fares from Seattle to Kolkata are currently lower than usual. Average one-way flight prices are about C$ 1,047, which is 10% below the typical average for this route.

  • How much time can I save by choosing a different layover airport when travelling from Seattle to Kolkata?

    Flying via Doha Hamad Intl (DOH) gives the shortest average 1-stop total travel time at 21h 06m, compared with 23h 16m via Singapore Changi (SIN) and 27h 33m via Dubai Intl (DXB).

  • What is the time difference between Seattle and Kolkata?

    Kolkata is 12 hours ahead of Seattle (India Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • How much should I expect to pay for a Seattle to Kolkata flight?

    Round-trip flights from Seattle to Kolkata range from C$ 1,371 to C$ 2,149, with an average of C$ 1,629 over the past 12 months. Anything below C$ 1,371 counts as a good deal.

Your guide to booking Seattle to Kolkata flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure instead of Wednesday. On this route, Sunday flights average C$ 1,501 – about C$ 237 less than Wednesday (14% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 18 weeks before you fly. On this route, that window historically saves about 45% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Kolkata trip for March. Fares historically average C$ 1,279 round-trip in that month – typically C$ 1,284 less than the most expensive month, which is December (based on the last 12 months).
  • Also known as Kolkata Airport or Kolkata Netaji S. Chandra, Netaji Subhas Chandra Bose International (CCU) is the airport that serves the Capital of West Bengal state, India, Kolkata. If you’re traveling to India with a companion animal, consider using Air India, Jet Airways, and SpiceJet because they allow pets on board. At Seattle–Tacoma International Airport or Sea-Tac, pets must remain leashed except when visiting Pet Relief Areas on the Subway level of Concourse D, Mezzanine Level of Concourse S, the Mezzanine Level of Central Terminal, etc.
  • As the 10th-busiest airport in the U.S. that serves more than 36 million passengers per year, Seattle–Tacoma International Airport (SEA) can get very busy between 5 am to 7 am, 9 am to 11 am, and 4 pm to 6 pm. TSA recommends that travelers arrive 3h before their departure flight, so there’s ample time to navigate around the terminal, check-in, go through security, and find your gate.
  • If you arrive at Sea-Tac with time to spare before your flight to Kolkata, you can purchase a day pass to access The Club SEA in Concourse A and the Alaska Lounges in Concourses C, D and the North Satellite Terminal. Lounge facilities at Kolkata Airport are located in the Security Hold Areas of the Domestic and International Terminal.
  • Passengers that need to keep their kids entertained can head to Sea-Tac’s children’s play area near gate A, next door to Qdoba or use one of the seven lactation pods situated throughout the four Concourses. Located at Departure Level 3 and arrival Level 1 at Kolkata Airport are child care rooms available for traveling moms that need privacy to breastfeed, pump or change diapers.
  • While post-security wheelchair services are provided by your airline, Seattle–Tacoma International Airport, in conjunction with Prospect Airport Services, provides wheelchairs, including complimentary Meet and Assist services to passengers with disability. Communicating your wheelchair needs while booking your Kolkata tickets through KAYAK is advisable.

More options for your flight from Seattle to Kolkata

Complete your trip to Kolkata with a hotel stay or car rental