In terms of precipitation, rainfall in New Delhi ranges from 0.3 - 9.8 inches per month. August is typically the wettest month, when rainfall can reach 9.8 in. November is typically the driest time to visit New Delhi when rainfall is around 0.3 in.

If weather is an important factor for your trip to New Delhi, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

How far in advance should I book a flight from Islip, New York to New Delhi?

To save on the cost of your flight from Islip, New York to New Delhi, book at least 61 days before your planned departure. Booking around this time can save you about 21% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $909 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,062.

What is the cheapest month to fly from Islip, New York to New Delhi?

Flights from Islip, New York to New Delhi lean towards being more expensive in December. Prices are generally better when you fly from Islip, New York to New Delhi in September, with the cheapest ticket starting at $573.

What is the cheapest time of day to fly from ISP to DEL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to New Delhi as you normally would.

Can I find deals for flights from Islip to New Delhi that include hotel bookings?

Yes. In addition to deals on Islip to New Delhi flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to New Delhi?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to New Delhi.

Can I find deals for business class flights from Islip to New Delhi?

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

$1,163+ Flights from Islip, NY to New Delhi

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Cheap flight deals from Islip to New Delhi

Round-trip from	$1,163 (oojo)
Popular in	December
Cheapest in	September
Average price	$1,047

From Islip Long Island to New Delhi Indira Gandhi Intl

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Highest demand for flights based on searches. 14% potential increase in price ($154 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Islip to New Delhi

Cheapest flights from Islip to New Delhi
Explore the most affordable flight options available from Islip to New Delhi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Wed 7/3012:35 pmISP - DEL

2 stops40h 20mAir India

Tue 8/52:45 amDEL - ISP

2 stops43h 11mAir India

Deal found 7/2

$1,163

Wed 7/302:19 pmISP - DEL

2 stops29h 11mMultiple Airlines

Wed 8/64:50 amDEL - ISP

2 stops24h 41mMultiple Airlines

Deal found 7/2

$1,791

Best flights from Islip to New Delhi
Discover carefully curated flight deals from Islip to New Delhi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Wed 7/3012:35 pmISP - DEL

2 stops40h 20mAir India

Tue 8/52:45 amDEL - ISP

2 stops43h 11mAir India

Deal found 7/2

$1,163

Wed 7/302:19 pmISP - DEL

2 stops29h 11mMultiple Airlines

Wed 8/64:50 amDEL - ISP

2 stops24h 41mMultiple Airlines

Deal found 7/2

$1,791

Last-minute flights from Islip to New Delhi
Discover last-minute flight deals from Islip to New Delhi. Data last updated July 2, 2025 and is based on user searches.

Wed 7/3012:35 pmISP - DEL

2 stops40h 20mAir India

Tue 8/52:45 amDEL - ISP

2 stops43h 11mAir India

Deal found 7/2

$1,163

Wed 7/302:19 pmISP - DEL

2 stops29h 11mMultiple Airlines

Wed 8/64:50 amDEL - ISP

2 stops24h 41mMultiple Airlines

Deal found 7/2

$1,791

One-way flights from Islip to New Delhi
Search for one-way flight options from Islip to New Delhi. Find affordable one-way fares based on user searches. Data last updated July 2, 2025.

Sat 7/197:30 amISP - DEL

2 stops34h 15mMultiple Airlines

Deal found 7/2

$16,001

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to New Delhi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipNew Delhi

ISP - DEL

ISPDEL

Islip Long Island

Wed 7/30

12:35 pm-2:25 pm

2 stops40h 20m

New Delhi Indira Gandhi Intl

Tue 8/5

2:45 am-12:26 pm

2 stops43h 11m

$1,163

IslipNew Delhi

ISP - DEL

ISPDEL

Islip Long Island

Wed 7/30

2:19 pm-5:00 am

2 stops29h 11m

New Delhi Indira Gandhi Intl

Wed 8/6

4:50 am-8:01 pm

2 stops24h 41m

$1,791

IslipNew Delhi

ISP - DEL

ISPDEL

Islip Long Island

Sat 7/19

7:30 am-3:15 am

2 stops34h 15m

$16,001

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Islip to New Delhi

Have a flexible travel schedule? Discover the best time to fly to New Delhi from Islip with our price prediction graph.

Estimated round-trip 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 Islip to New Delhi

What is the cheapest month to book a flight from Islip, New York to New Delhi?

Currently, September is the cheapest month in which you can book a flight from Islip, New York to New Delhi (average of $809). Flying from Islip, New York to New Delhi in December is currently the most expensive (average of $1,347). 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.

Reviews of airlines servicing New Delhi

See what other customers who have flown with Air India from Islip to New Delhi have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air India

5.5

Fair

2,924 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Sep 2024

SFO - DEL

It wasn't what I expected. The aircraft was falling apart literally. Was dirty, the tv didn't work,food was horrible, my trip was delayed 20 hours at the Last minute. I would not travel with air India any more

Air India

5.5

Fair

2,924 reviews

Air India

5.5

Fair

2,924 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Sep 2024

SFO - DEL

Related info for your journey

Can I find deals for flights from Islip to New Delhi that include hotel bookings?
Yes. In addition to deals on Islip to New Delhi flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to New Delhi?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to New Delhi.
Can I find deals for business class flights from Islip to New Delhi?
Yes. Cheapflights offers flight deals from Islip to New Delhi 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 Islip, New York to New Delhi?
Currently, September is the cheapest month in which you can book a flight from Islip, New York to New Delhi (average of $809). Flying from Islip, New York to New Delhi in December is currently the most expensive (average of $1,347). 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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$1,163+ Cheap flights from Islip, NY (ISP) to New Delhi (DEL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to New Delhi with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to New Delhi

Round-trip from

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Find flight deals from Islip to New Delhi

Cheapest flights from Islip to New DelhiExplore the most affordable flight options available from Islip to New Delhi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Islip to New Delhi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to New Delhi that are best for you.

Best time to book a flight from Islip to New Delhi

Have a flexible travel schedule? Discover the best time to fly to New Delhi from Islip with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Islip to New Delhi

What is the cheapest month to book a flight from Islip, New York to New Delhi?

Reviews of airlines servicing New Delhi

See what other customers who have flown with Air India from Islip to New Delhi have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Islip to New Delhi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Islip to New Delhi that include hotel bookings?

How can I find direct flights from Islip to New Delhi?

Can I find deals for business class flights from Islip to New Delhi?

What is the cheapest month to book a flight from Islip, New York to New Delhi?

Traveling to a place near Islip?

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Cheapest flights from Islip to New Delhi
Explore the most affordable flight options available from Islip to New Delhi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.