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Flights from Seattle to Kolkata

What to know about flights from Seattle to Kolkata?

The distance between Seattle and Kolkata is approximately 11,634.37 km. Based on Trip.com's data, travel demand peaks in July.

Cheapest one-way
$769
American Airlines American Airlines SEA-CCU 21h 35m · 1 stop Wed, Sep 9
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Cheapest round-trip
$1,298
Singapore Airlines Singapore Airlines SEA-CCU 23h 50m · 2 stops Wed, Sep 23 - Thu, Oct 1
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Recommended airlines
American Airlines American Airlines Cheapest · From $769 Delta Air Lines Delta Air Lines Most booked
When to travel
September
Cheapest
July
Peak season for travel
Route details
11,634.37 km
Flight distance

Explore the cheapest one-way and round-trip flights from Seattle to Kolkata over the next 90 days, with one-way fares from $769 and round-trip from $1,298. Based on Trip.com's latest 7-day flight data.

      • SEA 10:15 AM
        23h 50m
        1 stop
        CCU 10:35 PM
        Seattle - Kolkata | Wed, Sep 23 | Singapore Airlines
        CCU 11:30 PM
        21h 45m
        1 stop
        SEA 8:45 AM
        Kolkata - Seattle | Thu, Oct 1 | Singapore Airlines
        $1,298 $1,786
        27% off
        27% off
        $1,786 $1,298
      • SEA 4:25 PM
        21h 15m
        1 stop
        CCU 2:10 AM
        Seattle - Kolkata | Fri, Oct 2 | Qatar Airways
        CCU 3:40 AM
        21h 15m
        1 stop
        SEA 12:25 PM
        Kolkata - Seattle | Fri, Oct 9 | Qatar Airways
        $1,316 $1,786
        26% off
        26% off
        $1,786 $1,316
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Wed, Sep 23 | Qatar Airways
        CCU 4:00 AM
        21h 35m
        1 stop
        SEA 1:05 PM
        Kolkata - Seattle | Thu, Oct 1 | Qatar Airways
        $1,317 $1,786
        26% off
        26% off
        $1,786 $1,317
      • SEA 4:25 PM
        21h 15m
        1 stop
        CCU 2:10 AM
        Seattle - Kolkata | Wed, Oct 7 | Qatar Airways
        CCU 3:40 AM
        21h 15m
        1 stop
        SEA 12:25 PM
        Kolkata - Seattle | Wed, Oct 14 | Qatar Airways
        $1,317
        26% off
        $1,786 $1,317
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Mon, Sep 21 | Qatar Airways
        CCU 4:00 AM
        21h 15m
        1 stop
        SEA 12:45 PM
        Kolkata - Seattle | Mon, Sep 28 | Qatar Airways
        $1,358
        24% off
        $1,786 $1,358
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Mon, Sep 21 | American Airlines
        CCU 4:00 AM
        21h 15m
        1 stop
        SEA 12:45 PM
        Kolkata - Seattle | Mon, Sep 28 | Qatar Airways
        $1,434
        20% off
        $1,786 $1,434
      • SEA 3:50 PM
        20h 35m
        1 stop
        CCU 1:55 AM
        Seattle - Kolkata | Wed, Nov 4 | Qatar Airways
        CCU 3:25 AM
        21h 45m
        1 stop
        SEA 11:40 AM
        Kolkata - Seattle | Tue, Nov 10 | Qatar Airways
        $1,444
        19% off
        $1,786 $1,444
      • SEA 10:15 AM
        23h 50m
        1 stop
        CCU 10:35 PM
        Seattle - Kolkata | Fri, Sep 25 | Singapore Airlines
        CCU 11:30 PM
        21h 45m
        1 stop
        SEA 8:45 AM
        Kolkata - Seattle | Thu, Oct 1 | Singapore Airlines
        $1,465
        18% off
        $1,786 $1,465
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Tue, Sep 22 | Qatar Airways
        CCU 4:00 AM
        21h 15m
        1 stop
        SEA 12:45 PM
        Kolkata - Seattle | Sat, Sep 26 | Qatar Airways
        $1,494
        16% off
        $1,786 $1,494
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Wed, Sep 9 | Qatar Airways
        CCU 4:00 AM
        21h 35m
        1 stop
        SEA 1:05 PM
        Kolkata - Seattle | Tue, Sep 15 | Qatar Airways
        $1,518
        15% off
        $1,786 $1,518
      • SEA 1:00 PM
        17h 25m
        1 stop
        CCU 2:00 PM
        Seattle - Kolkata | Wed, Sep 9 | Normal Airline
        CCU 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Kolkata - Seattle | Fri, Sep 11 | Normal Airline
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        Find more flights
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Wed, Sep 9 | American Airlines
        $769 $1,295
        41% off
        41% off
        $1,295 $769
      • SEA 4:25 PM
        21h 15m
        1 stop
        CCU 2:10 AM
        Seattle - Kolkata | Thu, Oct 15 | Qatar Airways
        $983 $1,295
        24% off
        24% off
        $1,295 $983
      • SEA 4:25 PM
        21h 35m
        1 stop
        CCU 2:30 AM
        Seattle - Kolkata | Fri, Sep 11 | American Airlines
        $1,059 $1,295
        18% off
        18% off
        $1,295 $1,059
      • SEA 5:15 PM
        26h 25m
        1 stop
        CCU 8:10 AM
        Seattle - Kolkata | Wed, Sep 9 | Emirates
        $1,061
        18% off
        $1,295 $1,061
      • SEA 3:50 PM
        20h 35m
        1 stop
        CCU 1:55 AM
        Seattle - Kolkata | Fri, Nov 6 | Qatar Airways
        $1,095
        15% off
        $1,295 $1,095
      • SEA 10:15 AM
        23h 50m
        1 stop
        CCU 10:35 PM
        Seattle - Kolkata | Fri, Sep 11 | Singapore Airlines
        $1,096
        15% off
        $1,295 $1,096
      • SEA 10:15 AM
        23h 50m
        1 stop
        CCU 10:35 PM
        Seattle - Kolkata | Wed, Sep 9 | Singapore Airlines
        $1,100
        15% off
        $1,295 $1,100
      • SEA 1:00 PM
        17h 25m
        1 stop
        CCU 2:00 PM
        Seattle - Kolkata | Wed, Sep 9 | Normal Airline
        Find more flights
        Find more flights

Which airlines are the most popular for Seattle to Kolkata flights?

The most popular airlines flying from Seattle to Kolkata are Delta Air Lines, Asiana Airlines, and Singapore Airlines, among 3 carriers on this route. American Airlines offers the lowest fares. Based on Trip.com's flight booking data from the previous 12 months.
Delta Air Lines logo Delta Air Lines
Asiana Airlines logo Asiana Airlines
Singapore Airlines logo Singapore Airlines
Airlines are determined based on actual purchased flight tickets from Seattle to Kolkata according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Kolkata (SEA-CCU)?

    Based on Trip.com data, American Airlines offers one-way fares as low as $769 on Cheapest nonstop routes (e.g. SEA to CCU on Wed, Sep 9), while Singapore Airlines offers Cheapest nonstop round-trips from $1,298 departing on Wed, Sep 23 and returning on Thu, Oct 1.
  • At the moment, you can catch a nonstop flight from Seattle to Kolkata with the following airlines, including: Asiana Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Kolkata is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seattle to Kolkata, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 9, with one-way flights priced at just $769.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Kolkata travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Kolkata is September, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Seattle to Kolkata on September 13, 2026 with Singapore Airlines, with prices starting at $458.
  • You can arrive at any of the following airports in Kolkata: Netaji Subhash Chandra Bose International Airport (CCU). Flights from Seattle-Tacoma International Airport to Netaji Subhash Chandra Bose International Airport (SEA-CCU) are by far the most popular option for this route.
  • The time difference between Kolkata and Seattle is 13h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Kolkata is $1,213. Fares vary by travel date, airline and availability.
  • Enter Seattle and Kolkata, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.