How far in advance should I book a flight from Islip to Québec City?

To save on the cost of your flight from Islip to Québec City, book at least 15 days before your planned departure. Booking around this time can save you about 70% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $475 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $649.

What is the cheapest month to fly from Islip to Québec City?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, April can be a great choice for travel to Québec City. Flights to Québec City from Islip in April are about $557 on average during April, but can be found for as low as $188.

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

When flying from Islip to Québec City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Islip to Québec City that include hotel bookings?

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

How can I find direct flights from Islip to Québec City?

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

Can I find deals for business class flights from Islip to Québec City?

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

$2,821+ Cheap Flights from Islip to Québec City

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Cheap flight deals from Islip to Québec City

Round-trip from	$2,821 (United)
Popular in	June
Cheapest in	April
Average price	$542

From Islip Long Island to Québec City

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($30 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Islip to Québec City

Cheapest flights from Islip to Québec City
Explore the most affordable flight options available from Islip to Québec City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Sun 9/147:30 amISP - YQB

2 stops8h 30mMultiple Airlines

Tue 9/166:00 amYQB - ISP

2 stops9h 21mMultiple Airlines

Deal found 9/10

$2,821

Best flights from Islip to Québec City
Discover carefully curated flight deals from Islip to Québec City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Sat 10/1111:53 amISP - YQB

2 stops10h 48mMultiple Airlines

Sat 10/186:00 amYQB - ISP

2 stops14h 01mMultiple Airlines

Deal found 9/11

$2,821

Last-minute flights from Islip to Québec City
Discover last-minute flight deals from Islip to Québec City. Data last updated September 11, 2025 and is based on user searches.

Sun 9/147:30 amISP - YQB

2 stops8h 30mMultiple Airlines

Tue 9/166:00 amYQB - ISP

2 stops9h 21mMultiple Airlines

Deal found 9/10

$2,821

Cheapflights Fare Finder

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

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Route

Depart

Return

Price

IslipQuébec City

ISP - YQB

ISPYQB

Islip Long Island

Sat 10/11

11:53 am-10:41 pm

2 stops10h 48m

Québec City

Sat 10/18

6:00 am-8:01 pm

2 stops14h 01m

$2,821

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Islip to Québec City

Have a flexible travel schedule? Discover the best time to fly to Québec City 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 Québec City

What is the cheapest month to book a flight from Islip to Québec City?

Currently, February is the cheapest month in which you can book a flight from Islip to Québec City (average of $363). Flying from Islip to Québec City in September is currently the most expensive (average of $584). 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 Islip to Québec City that include hotel bookings?
Yes. In addition to deals on Islip to Québec City flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Québec City?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Québec City.
Can I find deals for business class flights from Islip to Québec City?
Yes. Cheapflights offers flight deals from Islip to Québec City 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 to Québec City?
Currently, February is the cheapest month in which you can book a flight from Islip to Québec City (average of $363). Flying from Islip to Québec City in September is currently the most expensive (average of $584). 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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$2,821+ Cheap flights from Islip (ISP) to Québec City (YQB)

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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Québec City with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Islip to Québec City

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Find flight deals from Islip to Québec City

Cheapest flights from Islip to Québec CityExplore the most affordable flight options available from Islip to Québec City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Islip to Québec City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Islip to Québec City

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

Cheapflights Insights

Everything you need to know about your flight from Islip to Québec City

What is the cheapest month to book a flight from Islip to Québec City?

Related info for your journey

Find useful and relevant information for your journey from Islip to Québec City. 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 Québec City that include hotel bookings?

How can I find direct flights from Islip to Québec City?

Can I find deals for business class flights from Islip to Québec City?

What is the cheapest month to book a flight from Islip to Québec City?

Browse thousands of different options on Cheapflights for your next trip

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Cheapest flights from Islip to Québec City
Explore the most affordable flight options available from Islip to Québec City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.