HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$6,865+ Cheap flights from Islip, NY (ISP) to Oslo

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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — OSL
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to Oslo 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 Islip to Oslo

Cheapest flights from Islip to Oslo
Explore the most affordable flight options available from Islip to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This Ovago deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/289:59 am
ISP
-
OSL
2 stops26h 16m
Multiple Airlines
Sat 4/49:55 am
OSL
-
ISP
2 stops14h 49m
Multiple Airlines
Deal found 2/11$6,865

Find flight deals from Islip to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 13, 2026.

Round-trip from

$6,865
(Ovago)

Popular in

December

Cheapest in

May

Average price

$552
From Islip Long Island to Oslo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Oslo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Islip to Oslo that are best for you.

Fly from

Islip

Fly to

Oslo

Route

Depart

Return

Price

IslipOslo

ISP - OSL

ISPOSL

Islip Long Island

Sat 3/28

9:59 am-5:15 pm

2 stops26h 16m

Oslo Gardermoen

Sat 4/4

9:55 am-6:44 pm

2 stops14h 49m

$6,865

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Best time to book a flight from Islip to Oslo

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

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

Currently, June is the cheapest month in which you can book a flight from Islip, New York to Oslo (average of $231). Flying from Islip, New York to Oslo in February is currently the most expensive (average of $412). 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

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

  • What airport do you fly from for flights from Islip to Oslo?

    Islip Long Island (ISP), located 7.2 mi from the city center, is the airport you fly out of when you book flights from Islip to Oslo. 0 airlines have flights from Long Island to Oslo on a regular basis. Booking flights from Islip Long Island to Oslo should not be difficult; the airport handles an average of 0 outbound flights to Oslo per day.

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

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

  • How can I find direct flights from Islip to Oslo?

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

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

    Yes. Cheapflights offers flight deals from Islip to Oslo 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 Oslo?

    Currently, June is the cheapest month in which you can book a flight from Islip, New York to Oslo (average of $231). Flying from Islip, New York to Oslo in February is currently the most expensive (average of $412). 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

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.

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.