How often are flights from Kolkata to San Francisco delayed?

About 39% of weekly flights between Kolkata and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for Kolkata to San Francisco flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Kolkata to San Francisco flights?

Over the past year, Air India have had the lowest number of delays on this route, with just 39% of flights being delayed.

How long is the flight from Kolkata to San Francisco?

Airlines like Qatar Airways fly from Kolkata to San Francisco in about 22h 50m. The time it takes to get you to your destination can typically vary by up to . The distance between Kolkata and San Francisco is about 7810 mi.

Weekly flight availability from Kolkata to San Francisco

The most flights from CCU to SFO are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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

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

How can I find direct flights from Kolkata to San Francisco?

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

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

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

£563+ Cheap Flights from Kolkata to San Francisco

Cheap flight deals from Kolkata to San Francisco

Enter your travel dates to find the best prices.

Cheapest

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Cheapest flights from Kolkata to San Francisco
Explore the most affordable flight options available from Kolkata to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Thu 10/1218:45 -

2 stops30h 30m

Mon 11/115:10 -

2 stops28h 15m

Deal found 10/9£747

Sun 8/1116:15 -

2 stops33h 00m

Thu 21/113:50 -

2 stops28h 15m

Deal found 8/9£748

Thu 10/1216:15 -

2 stops33h 00m

Sat 9/113:50 -

2 stops28h 15m

Deal found 10/9£785

Tue 22/919:00 -

2 stops29h 15m

Sun 4/1020:10 -

2 stops47h 35m

Deal found 8/9£795

Fri 25/903:50 -

2 stops33h 36m

Fri 12/307:01 -

2 stops47h 24m

Deal found 11/9£813

Thu 26/1121:05 -

2 stops28h 10m

Mon 11/115:10 -

2 stops29h 40m

Deal found 6/9£823

Mon 14/919:15 -

2 stops35h 15m

Mon 21/913:45 -

2 stops30h 55m

Deal found 7/9£824

Wed 23/918:45 -

2 stops35h 45m

Sun 4/1020:10 -

2 stops47h 35m

Deal found 8/9£833

Wed 23/921:30 -

2 stops34h 56m

Tue 16/311:55 -

2 stops50h 00m

Deal found 11/9£833

Fri 16/1021:30 -

2 stops39h 59m

Fri 30/1022:56 -

2 stops56h 29m

Deal found 11/9£840

Mon 21/903:50 -

2 stops30h 20m

Wed 30/922:46 -

2 stops33h 14m

Deal found 10/9£844

Find flight deals from Kolkata to San Francisco

Round-trip from	£747
One-way from	£563
Popular in	July
Cheapest in	November
Average price	£912

KLM
10/12-11/1
4 total stops
58h 45m total
Kolkata to San Francisco

Search Deals

Emirates
23/9-31/12
1 total stop
40h 50m total
Kolkata to San Francisco

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£96 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Kolkata to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Wed 2/12

20:25-12:50

1 stop29h 55m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£576

Fastest return journey

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Mon 21/9

04:00-14:20

1 stop22h 50m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£590

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Sun 27/9

20:55-14:10

1 stop29h 45m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£593

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Sun 29/11

21:30-16:30

2 stops56h 30m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£624

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Sat 28/11

18:45-16:30

2 stops59h 15m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£624

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Sun 10/1

21:30-16:30

2 stops56h 30m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£624

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Wed 23/9

20:55-14:10

1 stop29h 45m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£660

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Wed 16/9

09:50-14:10

1 stop40h 50m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£661

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Sun 20/9

09:50-14:10

1 stop40h 50m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£680

KolkataSan Francisco

CCU Kolkata Netaji S. Chandra - SFO San Francisco

CCUSFO

Kolkata Netaji S. Chandra

Tue 12/1

09:15-12:50

1 stop41h 05m

San Francisco

Wed 31/12

00:00-13:30

Nonstop0h 00m

£700

Flights are sorted by cheapest return flights first.

Deals found on 6/9

Showing 1-10 of 18 resultsSorted by cheapest first

Best time to book a flight from Kolkata to San Francisco

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

CCU-SFO

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.

Cheapflights Insights

Everything you need to know about your flight from Kolkata to San Francisco

Prices

Airlines

Delays

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

The price you pay for your flight from Kolkata to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Kolkata to San Francisco (average of £725). Flying from Kolkata to San Francisco in July is currently the most expensive (average of £1,245). 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 CCU to SFO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kolkata to San Francisco as you normally would.

How much does it cost for a return flight from Kolkata to San Francisco?

Airfare is below average for this route at the moment.

Kolkata to San Francisco flights typically cost between £868 and £1,096 in December.
The cheapest return price found within the last 5 days was £747 on KLM (10 Dec–11 Jan).

Related info for your journey

How long is the flight from Kolkata to San Francisco?
Airlines like Qatar Airways fly from Kolkata to San Francisco in about 22h 50m. The time it takes to get you to your destination can typically vary by up to . The distance between Kolkata and San Francisco is about 7810 mi.
Can I find deals for flights from Kolkata to San Francisco that include hotel bookings?
Yes. In addition to deals on Kolkata to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Kolkata to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kolkata to San Francisco.
Can I find deals for business class flights from Kolkata to San Francisco?
Yes. Cheapflights offers flight deals from Kolkata to San Francisco 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 Kolkata to San Francisco?
Currently, November is the cheapest month in which you can book a flight from Kolkata to San Francisco (average of £725). Flying from Kolkata to San Francisco in July is currently the most expensive (average of £1,245). 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.

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

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

Yes! Cheapflights helps users easily find flights from Kolkata to San Francisco with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Kolkata today and book when prices fit your budget.

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Cheap flights from Kolkata to San Francisco from £563

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kolkata to San Francisco

Cheapest flights from Kolkata to San FranciscoExplore the most affordable flight options available from Kolkata to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Explore the most affordable flight options available from Kolkata to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Kolkata to San FranciscoDiscover carefully curated flight deals from Kolkata to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Kolkata to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Kolkata to San FranciscoDiscover last-minute flight deals from Kolkata to San Francisco. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Kolkata to San Francisco. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Kolkata to San FranciscoSearch for one-way flight options from Kolkata to San Francisco. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from Kolkata to San Francisco. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Kolkata to San Francisco that are best for you.

Best time to book a flight from Kolkata to San Francisco

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

Cheapflights Insights

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

The price you pay for your flight from Kolkata to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kolkata to San Francisco as you normally would.

How much does it cost for a return flight from Kolkata to San Francisco?

Airfare is below average for this route at the moment.

Kolkata to San Francisco flights typically cost between £868 and £1,096 in December.The cheapest return price found within the last 5 days was £747 on KLM (10 Dec–11 Jan).

Weekly flight availability from Kolkata to San Francisco

The most flights from CCU to SFO are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How often are flights from Kolkata to San Francisco delayed?

About 39% of weekly flights between Kolkata and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for Kolkata to San Francisco flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Kolkata to San Francisco flights?

Over the past year, Air India have had the lowest number of delays on this route, with just 39% of flights being delayed.

Related info for your journey

How long is the flight from Kolkata to San Francisco?

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

How can I find direct flights from Kolkata to San Francisco?

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

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

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

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Cheapest flights from Kolkata to San Francisco
Explore the most affordable flight options available from Kolkata to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from Kolkata to San Francisco
Discover carefully curated flight deals from Kolkata to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Kolkata to San Francisco
Discover last-minute flight deals from Kolkata to San Francisco. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Kolkata to San Francisco
Search for one-way flight options from Kolkata to San Francisco. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Kolkata to San Francisco flights typically cost between £868 and £1,096 in December.
The cheapest return price found within the last 5 days was £747 on KLM (10 Dec–11 Jan).