Cheap flights from San Francisco to Kolkata from $597

The month of January is, on average, the cheapest month to fly to Kolkata from San Francisco, with most prices found around $870. If you aren’t able to travel during the month of January, then book flights to Kolkata from San Francisco during August instead. Flights to Kolkata in August, while not as cheap as those in January, still average around $921.

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 $933. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Kolkata on Saturday is $1,086.

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 $900. Flying to Kolkata in the evening is an ideal time because this is during off-peak travel hours. Flights to Kolkata are more costly in the morning, with an average ticket price of $1,084. Departure times in the morning 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 $1,152 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 $896 on momondo.

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

No. A direct flight is the cheapest option for a flight between San Francisco to Kolkata.

As of May 2026, prices for San Francisco to Kolkata flights are approximately 3% cheaper when compared to flights at the same time last year.

KLM and IndiGo 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 58% of people opting to fly with this airline when traveling to Kolkata. Keep in mind that there are 8 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: 77% 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 47m.

Doha (DOH) has the shortest average layover time for this route: 1h 17m.

As of May 2026, 1 flights take off from San Francisco and land in Kolkata each day. The most common flight departure time for this route is 10:00AM, with 100% of daily flights taking off at noon.

7 flights are operational weekly from San Francisco to Kolkata as of May 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.