In terms of precipitation, rainfall in Chennai ranges from 10.0 - 330.0 inches per month. November is typically the wettest month, when rainfall can reach 330.0 mm. February is typically the driest time to visit Chennai when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Chennai, use this chart to help with planning. For those seeking warmer temperatures, May is the ideal time of year to visit, when temperatures reach an average of 33.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

What is the cheapest time of day to fly from STL to MAA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Chennai as you normally would.

Can I find deals for flights from St. Louis to Chennai that include hotel bookings?

Yes. In addition to deals on St. Louis to Chennai flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from St. Louis to Chennai?

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

Can I find deals for business class flights from St. Louis to Chennai?

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

₹ 61,699+ Cheap Flights from St. Louis to Chennai

Cheap flight deals from St. Louis to Chennai

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from St. Louis to Chennai
Explore the most affordable flight options available from St. Louis to Chennai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Mon 28/908:54 -

2 stops31h 46m

Fri 16/1004:05 -

2 stops30h 44m

Deal found 24/9₹ 97,298

Thu 8/1011:31 -

2 stops34h 24m

Sun 11/1004:05 -

2 stops27h 22m

Deal found 24/9₹ 98,066

Tue 6/1007:29 -

2 stops33h 11m

Wed 21/1004:05 -

2 stops30h 44m

Deal found 29/9₹ 99,218

Tue 13/1007:29 -

2 stops26h 11m

Wed 28/1009:55 -

2 stops48h 34m

Deal found 29/9₹ 100,177

Tue 3/1108:10 -

2 stops43h 25m

Tue 17/1103:55 -

2 stops41h 01m

Deal found 28/9₹ 106,606

Sun 1/1109:08 -

2 stops42h 27m

Sat 7/1103:55 -

2 stops40h 51m

Deal found 26/9₹ 106,990

Tue 20/1013:06 -

2 stops27h 14m

Wed 4/1116:10 -

2 stops32h 10m

Deal found 29/9₹ 107,758

Tue 3/1106:02 -

2 stops32h 43m

Tue 17/1103:15 -

2 stops26h 32m

Deal found 27/9₹ 111,500

Tue 6/1010:59 -

2 stops29h 11m

Tue 24/1103:15 -

2 stops27h 42m

Deal found 25/9₹ 112,267

Tue 6/1010:59 -

2 stops29h 11m

Fri 9/1004:05 -

2 stops27h 22m

Deal found 28/9₹ 118,792

Fri 4/1207:00 -

2 stops44h 35m

Sun 27/1216:10 -

2 stops35h 26m

Deal found 24/9₹ 121,095

Find flight deals from St. Louis to Chennai

Round-trip from	₹ 97,298
One-way from	₹ 61,699
Popular in	June
Cheapest in	March
Average price	₹ 167,058

3/2-24/2
4 total stops
68h 59m total
St. Louis to Chennai

Search Deals

Qatar Airways
1/11-31/12
2 total stops
32h 43m total
St. Louis to Chennai

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (₹ 975,149 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (₹ 533,170 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Sun 1/11

15:40-08:45

3 stops53h 35m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 77,436

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Wed 3/2

10:27-08:05

2 stops34h 08m

Chennai

Wed 24/2

16:10-15:31

2 stops34h 51m

₹ 97,298

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Fri 5/2

07:21-19:50

2 stops24h 59m

Chennai

Sun 21/2

21:50-19:30

2 stops33h 10m

₹ 98,066

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Sat 6/2

05:05-08:05

2 stops39h 30m

Chennai

Sun 21/2

21:50-18:08

2 stops31h 48m

₹ 98,066

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Fri 4/12

07:00-15:05

2 stops44h 35m

Chennai

Sun 27/12

16:10-16:06

2 stops35h 26m

₹ 121,095

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Sat 9/1

07:27-02:15

2 stops31h 18m

Chennai

Sat 17/4

04:20-23:46

2 stops29h 56m

₹ 131,267

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Sun 18/10

21:40-21:30

2 stops61h 20m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 443,696

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Wed 16/12

09:59-11:50

3 stops38h 21m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 505,396

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Wed 16/12

08:10-15:05

2 stops43h 25m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 513,072

St. LouisChennai

STL Lambert-St Louis - MAA Chennai

STLMAA

Lambert-St Louis

Sun 18/10

15:30-00:10

1 stop22h 10m

Chennai

Wed 31/12

00:00-12:30

Nonstop0h 00m

₹ 517,486

Flights are sorted by cheapest return flights first.

Deals found on 28/9

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from St. Louis to Chennai

Have a flexible travel schedule? Discover the best time to fly to Chennai from St. Louis with our price prediction graph.

STL-MAA

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 St. Louis to Chennai

What is the cheapest month to book a flight from St. Louis to Chennai?

Currently, March is the cheapest month in which you can book a flight from St. Louis to Chennai (average of ₹ 93,460). Flying from St. Louis to Chennai in June is currently the most expensive (average of ₹ 200,546). 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.

Related info for your journey

Can I find deals for flights from St. Louis to Chennai that include hotel bookings?
Yes. In addition to deals on St. Louis to Chennai flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from St. Louis to Chennai?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Chennai.
Can I find deals for business class flights from St. Louis to Chennai?
Yes. Cheapflights offers flight deals from St. Louis to Chennai 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 St. Louis to Chennai?
Currently, March is the cheapest month in which you can book a flight from St. Louis to Chennai (average of ₹ 93,460). Flying from St. Louis to Chennai in June is currently the most expensive (average of ₹ 200,546). 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

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How does Cheapflights help users find flights from St. Louis to Chennai?

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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Chennai?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Chennai for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to Chennai with no change fees?

Certainly. Search results for flights to Chennai from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis to Chennai become cheaper?

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

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Cheap flights from St. Louis to Chennai from ₹ 61,699

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St. Louis to Chennai

Cheapest flights from St. Louis to ChennaiExplore the most affordable flight options available from St. Louis to Chennai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Explore the most affordable flight options available from St. Louis to Chennai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Best flights from St. Louis to ChennaiDiscover carefully curated flight deals from St. Louis to Chennai that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Discover carefully curated flight deals from St. Louis to Chennai that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Last-minute flights from St. Louis to ChennaiDiscover last-minute flight deals from St. Louis to Chennai. Data last updated 29 September 2026 and is based on user searches.

Discover last-minute flight deals from St. Louis to Chennai. Data last updated 29 September 2026 and is based on user searches.

One-way flights from St. Louis to ChennaiSearch for one-way flight options from St. Louis to Chennai. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.

Search for one-way flight options from St. Louis to Chennai. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.

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Best time to book a flight from St. Louis to Chennai

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Cheapflights Insights

What is the cheapest month to book a flight from St. Louis to Chennai?

Related info for your journey

Can I find deals for flights from St. Louis to Chennai that include hotel bookings?

How can I find direct flights from St. Louis to Chennai?

Can I find deals for business class flights from St. Louis to Chennai?

What is the cheapest month to book a flight from St. Louis to Chennai?

Travelling to a place near Chennai?

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Alternative routes for St. Louis to Chennai

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Chennai

Explore flights to Chennai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 September 2026.

Complete your trip

Complete your trip to Chennai by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Tamil Nadu

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Find flights from St. Louis to Chennai, based on your preferred cabin class, be it economy, premium economy, business, or first class.

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Browse other St. Louis and Chennai flight options. Last updated on 29 September 2026.

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Can Cheapflights find flights from St. Louis to Chennai with no change fees?

Can Cheapflights notify me if prices for flights from St. Louis to Chennai become cheaper?

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Cheapest flights from St. Louis to Chennai
Explore the most affordable flight options available from St. Louis to Chennai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Best flights from St. Louis to Chennai
Discover carefully curated flight deals from St. Louis to Chennai that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Last-minute flights from St. Louis to Chennai
Discover last-minute flight deals from St. Louis to Chennai. Data last updated 29 September 2026 and is based on user searches.

One-way flights from St. Louis to Chennai
Search for one-way flight options from St. Louis to Chennai. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.