Find flights
When to book
Airlines
FAQs

Cheap flights from Kolkata to Seattle from ₹ 58,204

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
CCU — SEA
13 Sep — 20 Sep1
1 adult

The best prices from Kolkata Netaji S. Chandra to Seattle/Tacoma Intl are usually found in April or June, booked 40 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Kolkata to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kolkata (CCU) to Seattle (SEA). 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 8 September 2024.

Round-trip from

₹ 95,747

One-way from

₹ 58,204

Popular in

August

Cheapest in

April
14/10-26/10
  • 14/10-26/10
  • 4 total stops
  • 60h 45m total
  • Kolkata to Seattle
Search Deals
Qatar Airways
  • Qatar Airways
  • 29/1
  • 1 total stop
  • 21h 50m total
  • Kolkata to Seattle
Search Deals
High demand for flights, 21% potential price rise
Search Deals
Best time to find cheap flights, 13% potential price drop
Search Deals

Cheap Emirates flights from Kolkata to Seattle

Explore cheap flight options specifically provided by Emirates for the route between Kolkata and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 334,853 searches. Data last updated 8 September 2024.
Peruse some of the lowest-priced Emirates flights we've found from Kolkata to Seattle. Make sure to check back often as deals are often changing.
Mon 7/1009:45CCU - SEA
1 stop40h 10mEmirates
Mon 14/1017:15SEA - CCU
1 stop26h 30mEmirates
Deal found 7/9₹ 114,057
Mon 14/1009:45CCU - SEA
1 stop40h 10mEmirates
Sat 26/1017:15SEA - CCU
1 stop25h 55mEmirates
Deal found 7/9₹ 134,718
Sun 6/1001:30CCU - SEA
1 stop24h 25mEmirates
Fri 18/1017:15SEA - CCU
1 stop42h 45mEmirates
Deal found 7/9₹ 600,185
Mon 7/1009:45CCU - SEA
1 stop40h 10mEmirates
Fri 18/1017:15SEA - CCU
1 stop26h 30mEmirates
Deal found 7/9₹ 614,212

Cheap Qatar Airways flights from Kolkata to Seattle

Explore cheap flight options specifically provided by Qatar Airways for the route between Kolkata and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 334,853 searches. Data last updated 8 September 2024.
Have a look at some of the cheapest available Qatar Airways flights departing from Kolkata and landing in Seattle. Make sure to examine the flight information before completing your reservation.
Sun 13/1003:50CCU - SEA
2 stops27h 35mQatar Airways
Sat 26/1011:25SEA - CCU
2 stops25h 50mQatar Airways
Deal found 8/9₹ 136,734
Sun 13/1003:50CCU - SEA
2 stops27h 35mQatar Airways
Sat 26/1011:25SEA - CCU
2 stops25h 50mQatar Airways
Deal found 7/9₹ 136,818
Tue 24/903:50CCU - SEA
1 stop21h 10mQatar Airways
Wed 25/916:30SEA - CCU
1 stop21h 20mQatar Airways
Deal found 7/9₹ 145,049

Cheap Kolkata to Seattle flights in September & October 2024

Find cheap flight options from Kolkata to Seattle specifically for the months of September and October 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 334,853 searches. Prices were last updated on 8 September 2024.
Listed are some of the best fares we've found on flights departing from Kolkata to Seattle in 2024. Check back in a little while for more flight options.
Mon 14/1018:45CCU - SEA
2 stops29h 05mMultiple Airlines
Sat 26/1013:35SEA - CCU
2 stops31h 40mMultiple Airlines
Deal found 8/9₹ 95,747
Mon 14/1020:30CCU - SEA
2 stops26h 45mMultiple Airlines
Sat 26/1013:35SEA - CCU
2 stops31h 40mMultiple Airlines
Deal found 7/9₹ 97,427
Mon 7/1019:30CCU - SEA
2 stops34h 50mMultiple Airlines
Mon 14/1013:25SEA - CCU
2 stops30h 40mMultiple Airlines
Deal found 7/9₹ 100,955
Mon 7/1009:45CCU - SEA
1 stop40h 10mEmirates
Mon 14/1017:15SEA - CCU
1 stop26h 30mEmirates
Deal found 7/9₹ 114,057
Mon 7/1009:45CCU - SEA
1 stop40h 10mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops38h 08mMultiple Airlines
Deal found 7/9₹ 117,081
Sun 6/1003:50CCU - SEA
1 stop21h 10mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops36h 33mMultiple Airlines
Deal found 7/9₹ 119,684
Sun 6/1003:50CCU - SEA
2 stops32h 24mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops36h 33mMultiple Airlines
Deal found 7/9₹ 122,456
Sun 13/1003:50CCU - SEA
1 stop21h 10mMultiple Airlines
Sat 26/1016:30SEA - CCU
1 stop20h 45mMultiple Airlines
Deal found 8/9₹ 131,275
Mon 14/1023:30CCU - SEA
2 stops35h 00mMultiple Airlines
Sat 26/1010:15SEA - CCU
1 stop23h 40mMultiple Airlines
Deal found 7/9₹ 132,535

Kolkata to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Kolkata and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 334,853 searches. Data last updated 8 September 2024.
Listed are some of the best fares we've found on flights departing from Kolkata to Seattle in 2024. Check back in a little while for more flight options.
Mon 14/1018:45CCU - SEA
2 stops29h 05mMultiple Airlines
Sat 26/1013:35SEA - CCU
2 stops31h 40mMultiple Airlines
Deal found 8/9₹ 95,747
Mon 14/1020:30CCU - SEA
2 stops26h 45mMultiple Airlines
Sat 26/1013:35SEA - CCU
2 stops31h 40mMultiple Airlines
Deal found 7/9₹ 97,427
Mon 7/1019:30CCU - SEA
2 stops34h 50mMultiple Airlines
Mon 14/1013:25SEA - CCU
2 stops30h 40mMultiple Airlines
Deal found 7/9₹ 100,955
Mon 7/1009:45CCU - SEA
1 stop40h 10mEmirates
Mon 14/1017:15SEA - CCU
1 stop26h 30mEmirates
Deal found 7/9₹ 114,057
Mon 7/1009:45CCU - SEA
1 stop40h 10mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops38h 08mMultiple Airlines
Deal found 7/9₹ 117,081
Sun 6/1003:50CCU - SEA
1 stop21h 10mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops36h 33mMultiple Airlines
Deal found 7/9₹ 119,684
Sun 6/1003:50CCU - SEA
2 stops32h 24mMultiple Airlines
Mon 14/1021:42SEA - CCU
2 stops36h 33mMultiple Airlines
Deal found 7/9₹ 122,456
Sun 13/1003:50CCU - SEA
1 stop21h 10mMultiple Airlines
Sat 26/1016:30SEA - CCU
1 stop20h 45mMultiple Airlines
Deal found 8/9₹ 131,275
Mon 14/1023:30CCU - SEA
2 stops35h 00mMultiple Airlines
Sat 26/1010:15SEA - CCU
1 stop23h 40mMultiple Airlines
Deal found 7/9₹ 132,535

One-way flights to Seattle from Kolkata

Search for one-way flight options from Kolkata to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 334,853 searches. Data last updated 8 September 2024.
Users travelling one-way from Kolkata to Seattle can select one of these great deals. Those needing a return flight from Kolkata to Seattle can use the search form above.
Wed 29/103:20CCU - SEA
1 stop21h 50mQatar Airways
Deal found 6/9₹ 58,204
Mon 27/103:20CCU - SEA
2 stops33h 28mMultiple Airlines
Deal found 6/9₹ 59,128
Tue 28/103:20CCU - SEA
1 stop21h 50mQatar Airways
Deal found 6/9₹ 59,968
Sun 26/103:20CCU - SEA
2 stops27h 05mQatar Airways
Deal found 6/9₹ 60,892
Sat 1/203:20CCU - SEA
1 stop21h 50mQatar Airways
Deal found 7/9₹ 63,664
Thu 30/103:20CCU - SEA
2 stops27h 05mQatar Airways
Deal found 7/9₹ 64,588
Fri 31/103:20CCU - SEA
1 stop21h 50mQatar Airways
Deal found 7/9₹ 65,679
Fri 31/103:20CCU - SEA
2 stops27h 05mQatar Airways
Deal found 7/9₹ 68,367
Sun 2/223:40CCU - SEA
1 stop45h 00mSingapore Airlines
Deal found 7/9₹ 71,139

Find flights from Kolkata to Seattle within your budget

Customise your flight search to find flights from Kolkata to Seattle 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 334,853 searches. Data last updated 8 September 2024.

Fly from

Any airport

Fly to

Any airport

Budget

₹ 95,747 - ₹ 140,766

Route

Depart

Return

Price

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 14/10

2 stops29h 05m

Seattle/Tacoma Intl

Sat 26/10

2 stops31h 40m

₹ 95,747

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 14/10

2 stops26h 45m

Seattle/Tacoma Intl

Sat 26/10

2 stops31h 40m

₹ 97,427

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 7/10

2 stops34h 50m

Seattle/Tacoma Intl

Mon 14/10

2 stops30h 40m

₹ 100,955

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 7/10

1 stop40h 10m

Seattle/Tacoma Intl

Mon 14/10

1 stop26h 30m

₹ 114,057

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 7/10

1 stop40h 10m

Seattle/Tacoma Intl

Mon 14/10

2 stops38h 08m

₹ 117,081

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 14/10

1 stop40h 10m

Seattle/Tacoma Intl

Sat 26/10

1 stop25h 55m

₹ 134,718

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Sun 13/10

2 stops27h 35m

Seattle/Tacoma Intl

Sat 26/10

2 stops25h 50m

₹ 136,734

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Sun 13/10

2 stops27h 35m

Seattle/Tacoma Intl

Sat 26/10

2 stops25h 50m

₹ 136,818

Kolkata Netaji S. ChandraSeattle/Tacoma Intl

CCU - SEA

CCUSEA

Kolkata Netaji S. Chandra

Mon 14/10

1 stop21h 45m

Seattle/Tacoma Intl

Sat 26/10

1 stop23h 40m

₹ 140,766

Flights are sorted by cheapest first

Deals found on 8/9

Best time to book a flight from Kolkata to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Kolkata with our price prediction graph.
Estimated return 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.

Travel insights for flights from Kolkata to Seattle

Get recent, data-driven insights about flights from Kolkata to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Kolkata to Seattle. Price data was last updated on 6 September 2024.

The price you pay for your flight from Kolkata to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Find deals

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

Currently, June is the cheapest month in which you can book a flight from Kolkata to Seattle (average of ₹ 79,454). Flying from Kolkata to Seattle in January is currently the most expensive (average of ₹ 126,571). 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.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 8 September 2024.
Read through reviews of airlines operating flights from Kolkata to Seattle, such as Emirates and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,336 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Food

7.7

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Singapore Airlines
8.2
Very Good
1,336 reviews
Singapore Airlines
8.2
Very Good
1,336 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Food

7.7

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Emirates
8.1
Very Good
3,647 reviews
Singapore Airlines
8.2
Very Good
1,336 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Food

7.7

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Qatar Airways
7.6
Good
4,007 reviews
Singapore Airlines
8.2
Very Good
1,336 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Food

7.7

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Air Canada
6.9
Okay
7,600 reviews
Singapore Airlines
8.2
Very Good
1,336 reviews
Check prices

Entertainment

8.1

Boarding

8.3

Food

7.7

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 10

Everything was poor and I had asked for some food and they told me to go to the serving place and get it . They weren’t very friendly and again I wanted upgrade to business and seats were empty and they said it was full . Will never fly with Singapore airlines

Related info for your journey

Find useful and relevant information for your journey from Kolkata to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Kolkata to Seattle for under ₹ 95,800 on Cheapflights?

    Yes, there are multiple flights from Kolkata to Seattle for under ₹ 95,800. The cheapest flight booked recently is on Multiple Airlines for just ₹ 95,747, but on average you can expect to pay ₹ 126,739.

  • What are the cheapest airlines flying from Kolkata to Seattle round-trip?

    Our cheapest airline available from Kolkata to Seattle is Emirates. Our recent data shows that you can find tickets from as low as ₹ 114,057 on this airline. Additional options worth looking into are Qatar Airways and Singapore Airlines, starting at ₹ 136,734 and ₹ 140,766 round-trip. You may be able to fly from Kolkata to Seattle for 12% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Kolkata to Seattle one-way?

    The cheapest airline one-way is Qatar Airways, with whom users have recently found tickets for as low as ₹ 58,204. However, be on the lookout for offers from Singapore Airlines and Air Canada, as they are both options that can get you from Kolkata to Seattle for a low price.

  • What does CCU to SEA mean?

    CCU stands for Kolkata Netaji S. Chandra Airport, while SEA stands for Seattle/Tacoma Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Kolkata to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Kolkata to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Kolkata to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Kolkata to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

  • How can I find direct flights from Kolkata to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Kolkata to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Kolkata to Seattle that allow pets onboard?

    Many airlines flying from Kolkata to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Kolkata to Seattle?

    Yes, you can often find last-minute deals on Kolkata to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Kolkata to Seattle flight deals updated?

    The Kolkata to Seattle flight deals you see on this page were last updated on 8/9.

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

    Currently, June is the cheapest month in which you can book a flight from Kolkata to Seattle (average of ₹ 79,454). Flying from Kolkata to Seattle in January is currently the most expensive (average of ₹ 126,571). 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 Kolkata to Seattle
See prices for flight routes from nearby airports that may be better suited for you.

Kolkata to Portland flights

Top 2 airlines flying from Kolkata to Seattle

Discover the top 2 airlines that operate flights from Kolkata to Seattle. 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 334,853 searches. Data last updated 8 September 2024.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest₹ 113,341Average₹ 136,118FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
EmiratesCheapest₹ 115,570Average₹ 132,979FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Amritsar to Dubai flights
Pune to Frankfurt am Main Airport flights
Chennai to Germany flights
Hyderabad to Milan flights
Kolkata to Germany flights
Bengaluru to Indonesia flights
Kochi to Doha flights
New Delhi to Jeddah flights
New Delhi to Milan flights
Kochi to Manchester flights
New Delhi to Belgium flights
Kolkata to Seoul flights

Search flights from Kolkata to Seattle by cabin class

Find flights from Kolkata to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Boracay Godofredo P. Ramos
Flights to Kuching
Flights to Nicosia Ercan
Flights to Des Moines
Flights to Monrovia Roberts Intl
Flights to Rovaniemi
Flights to Port Moresby Jackson Fld
Flights to Chișinău Intl
Flights to Little Rock
Flights to Madison Truax Field
Flights to Kona Intl
Flights to Nadi
Flights to Sarajevo Butmir
Flights to Conakry
Flights to Johor Bahru Sultan Ismail Intl
Flights to Mikonos
Flights to Norfolk
Flights to Bilbao
Flights to Managua Augusto C Sandino
Flights to Bremen
Flights to Bordeaux
Flights to León Del Bajio
Flights to Tallinn Ulemiste
Flights to San Antonio

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Kolkata to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Kolkata.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Kolkata to Seattle flexibly with Cheapflights today.

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

Not ready to book yet? You can track prices for flights from Kolkata to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.
View all available airlines