In terms of precipitation, rainfall in Redmond ranges from 0.0 - 0.8 inches per month. January is typically the wettest month, when rainfall can reach 0.8 in. July is typically the driest time to visit Redmond when rainfall is around 0.0 in.

If weather is an important factor for your trip to Redmond, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

To save up to 118% on this flight, we recommend booking at least 35 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip, New York to Redmond from $512 1-2 weeks out and tickets from $751 for flights departing within the next 72 hours.

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

The best pricing can be found in the month of October. Prices to Redmond from Islip, New York average $526. You can even find prices in October for less than $526, as users have found deals to Redmond from as low as $322. The month of December appears to be one of the more expensive times to travel to Redmond from Islip, New York. Flying in the targeted month can save you up to 45%.

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

When flying from Islip, New York to Redmond, 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 Redmond that include hotel bookings?

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

How can I find direct flights from Islip to Redmond?

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

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

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

$524+ Flights from Islip, NY to Redmond

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Cheap flight deals from Islip to Redmond

Popular in	December
Cheapest in	October
Average price	$529

Highest demand for flights based on searches. 12% potential increase in price ($74 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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One-way flights from Islip to Redmond
Search for one-way flight options from Islip to Redmond. Find affordable one-way fares based on user searches. Data last updated agosto 14, 2025.

jue. 9/182:19 pmISP - RDM

2 stops25h 18mMultiple Airlines

Deal found 8/13

$524

Fly from

Fly to

Route

Depart

Return

Price

IslipRedmond

ISP - RDM

ISPRDM

Islip Long Island

jue. 9/18

2:19 pm-12:37 pm

2 stops25h 18m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Islip to Redmond

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

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

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Redmond (average of $336). Flying from Islip, New York to Redmond in June is currently the most expensive (average of $476). 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 Redmond that include hotel bookings?
Yes. In addition to deals on Islip to Redmond flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Redmond?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Redmond.
Can I find deals for business class flights from Islip to Redmond?
Yes. Cheapflights offers flight deals from Islip to Redmond 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 Redmond?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to Redmond (average of $336). Flying from Islip, New York to Redmond in June is currently the most expensive (average of $476). 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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$524+ Cheap flights from Islip, NY to Redmond (ISP - RDM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.

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One-way flights from Islip to RedmondSearch for one-way flight options from Islip to Redmond. Find affordable one-way fares based on user searches. Data last updated agosto 14, 2025.

Search for one-way flight options from Islip to Redmond. Find affordable one-way fares based on user searches. Data last updated agosto 14, 2025.

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

Best time to book a flight from Islip to Redmond

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

Cheapflights Insights

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

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

Related info for your journey

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

How can I find direct flights from Islip to Redmond?

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

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

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One-way flights from Islip to Redmond
Search for one-way flight options from Islip to Redmond. Find affordable one-way fares based on user searches. Data last updated agosto 14, 2025.