Cheap flights from San Francisco to Kolkata from $270

The month of September is, on average, the cheapest month to fly to Kolkata from San Francisco, with most prices found around $867. If you aren’t able to travel during the month of September, then book flights to Kolkata from San Francisco during January instead. Flights to Kolkata in January, while not as cheap as those in September, still average around $884.

On average, the least expensive day to fly to Kolkata from San Francisco is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $883. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Kolkata on Thursday is $1,038.

In the evening is the cheapest time of day to fly from San Francisco to Kolkata when you can find flight prices for as low as $873. Flying to Kolkata in the evening is an ideal time because this is during off-peak travel hours. Flights to Kolkata are more costly at noon, with an average ticket price of $1,080. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from San Francisco to Kolkata Netaji S. Chandra for the best San Francisco - Kolkata Netaji S. Chandra flight prices

You are more likely to see cheaper flights to Kolkata from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Kolkata for around $1,130 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kolkata from San Francisco for as low as $955 on momondo.

There are 3 cabin classes available to choose from on San Francisco to Kolkata Netaji S. Chandra flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 26% on your flight if you consider stops on a San Francisco to Kolkata flight.

As of February 2026, prices for San Francisco to Kolkata flights are approximately 9% cheaper when compared to flights at the same time last year.

Singapore Airlines and Lufthansa are the most popular carriers operating from San Francisco to Kolkata Netaji S. Chandra

Singapore Airlines, Air India and Qatar Airways are the top three most popular airlines that fly to Kolkata from San Francisco according to our data. Singapore Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Kolkata. Keep in mind that there are 7 different airlines that fly to Kolkata on a routine basis, so you have a few additional options to choose from.

Singapore (SIN) was the most common stop: 76% of momondo users choosing 1-stop flights on this route connected there.

Flights via Mumbai (BOM) offer the lowest average round-trip price of $999.

Flights connecting via Doha (DOH) have the shortest average one-way travel time: 21h 48m.

Doha (DOH) has the shortest average layover time for this route: 1h 16m.