Cheap Flights from St Louis to Kolkata

Compare St Louis to Kolkata flight deals

Find the cheapest month or even day of the year to fly to Kolkata

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Flight deals from St Louis to Kolkata

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Kolkata Airport? If you want to travel next month, return fares start from $3,203. Find the lowest prices on one-way and return tickets right here.

Kolkata.$1,914 per passenger.Departing Thu, 7 May, returning Sat, 6 Jun.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Thu, 7 May, arriving in Kolkata.Inbound indirect flight with Qatar Airways, departs from Kolkata on Sat, 6 Jun, arriving in St Louis.Price includes taxes and charges.From $1,914, select.

Kolkata.$2,038 per passenger.Departing Sat, 15 Aug, returning Sat, 19 Sep.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Sat, 15 Aug, arriving in Kolkata.Inbound indirect flight with Qatar Airways, departs from Kolkata on Sat, 19 Sep, arriving in St Louis.Price includes taxes and charges.From $2,038, select.

Kolkata.$2,378 per passenger.Departing Wed, 25 Nov, returning Fri, 8 Jan.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Wed, 25 Nov, arriving in Kolkata.Inbound indirect flight with Qatar Airways, departs from Kolkata on Fri, 8 Jan, arriving in St Louis.Price includes taxes and charges.From $2,378, select.

Kolkata.$2,711 per passenger.Departing Wed, 25 Nov, returning Wed, 30 Dec.Return flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Wed, 25 Nov, arriving in Kolkata.Inbound indirect flight with Qatar Airways, departs from Kolkata on Wed, 30 Dec, arriving in St Louis.Price includes taxes and charges.From $2,711, select.

Kolkata.$3,203 per passenger.Departing Fri, 22 May, returning Sun, 31 May.Return flight with Air Canada and Air India.Outbound indirect flight with Air Canada, departs from St Louis on Fri, 22 May, arriving in Kolkata.Inbound indirect flight with Air India, departs from Kolkata on Sun, 31 May, arriving in St Louis.Price includes taxes and charges.From $3,203, select.

Kolkata.$3,331 per passenger.Departing Fri, 22 May, returning Tue, 5 Jan.Return flight with Air Canada and Air India.Outbound indirect flight with Air Canada, departs from St Louis on Fri, 22 May, arriving in Kolkata.Inbound indirect flight with Air India, departs from Kolkata on Tue, 5 Jan, arriving in St Louis.Price includes taxes and charges.From $3,331, select.

Find the cheapest month to fly from St Louis to Kolkata

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Kolkata flights are currently cheapest in May.

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St Louis to Kolkata: Alternative routes

Compare routes from St Louis to Kolkata below. You may find an airport to fly into that's cheaper, faster, or easier than Kolkata.

Kolkata

16km from central Kolkata

ClosestCheapest

from $1,914

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St Louis to Kolkata: Flight information

The things to know before you go.

Cheapest flight found	$1,026
Cheapest month to fly	September

Finding cheap flights from St Louis to Kolkata: Frequently asked questions

How much are return flights from St Louis to Kolkata?

The best price we found for a return flight from St Louis to Kolkata is $1,914. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from St Louis to Kolkata?

Currently, there are no airlines that fly direct from St Louis to Kolkata. But we found flights with one or more stops from $1,914.

How many flights are there a week from St Louis to Kolkata?

As of April 2026, there are no flights flying from St Louis to Kolkata.

When is the cheapest time to fly from St Louis to Kolkata?

The cheapest month to fly from St Louis to Kolkata is usually May.

Which upcoming date is cheapest to fly from St Louis Airport to Kolkata Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Kolkata Airport on Thursday, 7 May 2026.

Can I get a direct flight from St Louis Airport to Kolkata Airport?

No airlines currently offer direct flights between St Louis Airport and Kolkata Airport. Most routes have one or more stops.

How can I find the best flight deal to Kolkata?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kolkata but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Kolkata?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kolkata is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from St Louis Airport to Kolkata with?

Currently, Qatar Airways offers the cheapest flight tickets to Kolkata.

Travelling from Lambert-St. Louis International Airport (STL) to Netaji Subhas Chandra Bose Airport (CCU): what you need to know

The timezone in Kolkata is UTC+5:30, which is ten hours 30 minutes ahead of St Louis.
Your STL to CCU flight won't wait if you're late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
Be prepared for longer lines during popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Netaji Subhas Chandra Bose Airport (CCU)

Currently, $1,026 is the lowest price we've found for a one-way Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport flight. The best price for a return ticket is $1,914. Keep in mind that fares may change due to demand when booking.
To score cheap tickets from STL to CCU, book in advance. Airlines usually offer their most competitively priced fares when flights are first made available.
Getting cheap flights from Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport is easy if you're flexible with your travel dates. Use the 'Whole month' tool to see the best prices across the month and score a great deal.
Save time looking for cheap flights from STL to CCU by creating a Price Alert. You'll get an email or notification through the app when a new discounted fare appears.
Pick your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport.

Handy information about Lambert-St. Louis International Airport (STL)

STL's address is 10701 Lambert International Blvd..
When it comes to Lambert-St. Louis International Airport's on-time performance, 78.04% of flights arrive within the scheduled timeframe.
Central St Louis to Lambert-St. Louis International Airport is around 26 kilometres. Depending on traffic, it'll take about 20 minutes to get there if you're ride-sharing, catching a cab or driving.
The trip on public transport typically takes 35 minutes.
Taking an early flight from Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport? Avoid the hassle of rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels close to STL:

Arriving at Netaji Subhas Chandra Bose Airport (CCU)

Consider booking a hotel close to CCU if you have a late Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport flight. Check in to one of these options and avoid the hassle of a long transfer:
Book a Netaji Subhas Chandra Bose Airport rental car and explore places that require a little more effort to reach. Europcar and Avis can set you up with a set of wheels for your travels through Kolkata and beyond.
Booking your ride from Netaji Subhas Chandra Bose Airport about four weeks in advance can help you secure the lowest rate.

Getting from Netaji Subhas Chandra Bose Airport (CCU) to central Kolkata

Netaji Subhas Chandra Bose Airport to central Kolkata has a drive time of about 40 minutes. It's approximately 16 kilometres away.
It typically takes 55 minutes if you're travelling on public transport.

When to fly to Netaji Subhas Chandra Bose Airport (CCU)

The quietest month for a flight from Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport is April, while July is the most popular. Choose the ideal time to visit Kolkata based on whether you prefer a laid-back vibe or a more bustling atmosphere.
The warmest month in Kolkata is April, with the temperature ranging between 24ºC and 42ºC. Lock in your flights from Lambert-St. Louis International Airport to Netaji Subhas Chandra Bose Airport in this month if you enjoy this type of weather.
January has average temperatures of between 15ºC and 29ºC. Look for cheap tickets from STL to CCU around that time if you'd rather travel in cooler conditions.

Explore more of India

Patna is just one of the many cities in India waiting to be explored after you've seen Kolkata. Around 467 kilometres away to the north-west, its top attractions include Mahatma Gandhi Setu, Bihar Museum and Golghar.
If you want to check out another major destination in India, consider Ranchi, about 322 kilometres west of Kolkata. Rock Garden, Jagannath Temple and Deer Park are among the biggest draws.