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Cheap Flights from Washington D.C. to Islip starting at S$ 177

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Washington D.C. to Islip

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.
Cheapest Airlines flying from Washington D.C. to Islip

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Jetblue Airways
From S$ 177
American Airlines
From S$ 197
United Airlines
From S$ 225
Sun Country Airlines
From S$ 249
Delta Air Lines
From S$ 297
Southwest Airlines
From S$ 300
Frontier Airlines
From S$ 439
ANA airlines

Find more flights and airlines

Alternative Routes from Washington D.C. to Islip

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Washington D.C. to Islip.

  • Cheapest
    Jetblue Airways
    DCA
    06:00
    10h 37m
    1 transfer
    ISP
    16:37
    Ronald Reagan Washington National Airport - Long Island Macarthur Airport
    Wed, Apr 3Jetblue Airways
    S$ 177
  • United Airlines
    IAD
    08:55
    7h 42m
    1 transfer
    ISP
    16:37
    Dulles International Airport - Long Island Macarthur Airport
    Wed, Apr 3United Airlines
    S$ 225
  • United Airlines
    IAD
    08:55
    7h 42m
    1 transfer
    ISP
    16:37
    Dulles International Airport - Long Island Macarthur Airport
    Wed, Apr 3United Airlines
    S$ 225
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from Washington D.C. (WAS) to Islip (ISP) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Islip based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much is a flight from Washington D.C. (WAS) to Islip (ISP) cost?

    According to Trip.com's data, the lowest price is around S$ 488.
  • What is the transportation method from the main airport to downtown in Islip?

    • The distance from Long Island Macarthur Airport to downtown is about 11km, by taxi about 30 minutes.
  • What's the most popular airline for direct flights from Washington D.C. (WAS) to Islip (ISP)?

    Airdialog LLC operates 1 direct flights from Washington D.C. (WAS) to Islip (ISP).
  • How many airports in Islip?

    There are 1 airports near Islip: Long Island Macarthur Airport.

Find cheapest flight ticket from Washington D.C. to Islip

Cheapest direct flight price

S$ 176

Cheapest month

January

Peak season for travel

May