In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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

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

Most accurate provider : When it comes to deals on Redmond-Islip, New York flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Redmond-Islip, New York flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Redmond-Islip, New York flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Redmond-Islip, New York flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Redmond-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Redmond to Islip?

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

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

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

$1,066+ Flights from Redmond to Islip, NY

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Redmond to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Redmond to Islip

Best flights from Redmond to Islip
Discover carefully curated flight deals from Redmond to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Mon 6/16:21 pmRDM - ISP

2 stops13h 44mMultiple Airlines

Fri 6/59:59 amISP - RDM

2 stops17h 17mMultiple Airlines

Deal found 12/3

$1,066

Find flight deals from Redmond to Islip

Most accurate provider	Expedia 2 stars
Most trusted provider	Expedia 3 stars
Round-trip from	$1,066 (Travelocity)
Popular in	December
Cheapest in	April
Average price	$605

Provider with most accurate pricing for Bend/Redmond-Islip Long Island flight deals.

Search Deals

Provider most trusted by Cheapflights users for Bend/Redmond-Islip Long Island flights.

Search Deals

From Bend/Redmond to Islip Long Island

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

RedmondIslip

RDM - ISP

RDMISP

Bend/Redmond

Mon 6/1

6:21 pm-11:05 am

2 stops13h 44m

Islip Long Island

Fri 6/5

9:59 am-12:16 am

2 stops17h 17m

$1,066

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Most accurate provider: When it comes to deals on Redmond-Islip, New York flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Redmond-Islip, New York flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Redmond-Islip, New York flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Redmond-Islip, New York flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Redmond-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Redmond to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Redmond 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 Redmond to Islip

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

Currently, April is the cheapest month in which you can book a flight from Redmond to Islip, New York (average of $272). Flying from Redmond to Islip, New York in December is currently the most expensive (average of $427). 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 Redmond to Islip that include hotel bookings?
Yes. In addition to deals on Redmond to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Redmond to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Redmond to Islip.
Can I find deals for business class flights from Redmond to Islip?
Yes. Cheapflights offers flight deals from Redmond to Islip 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 Redmond to Islip, New York?
Currently, April is the cheapest month in which you can book a flight from Redmond to Islip, New York (average of $272). Flying from Redmond to Islip, New York in December is currently the most expensive (average of $427). 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

Riverhead

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$1,066+ Cheap flights from Redmond to Islip, NY (RDM - ISP)

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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Redmond to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Redmond to Islip

Best flights from Redmond to IslipDiscover carefully curated flight deals from Redmond to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Discover carefully curated flight deals from Redmond to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Find flight deals from Redmond to Islip

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Redmond to Islip

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

Cheapflights Insights

Everything you need to know about your flight from Redmond to Islip

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

Related info for your journey

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

How can I find direct flights from Redmond to Islip?

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

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

Traveling to a place near Islip?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Redmond to Islip

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

100% Free

Book with Flexibility

Travel Smart

Best flights from Redmond to Islip
Discover carefully curated flight deals from Redmond to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.