What’s the cost of a flight from Washington Dulles to Islip?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Washington and Islip.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

What are the airport options between Washington and Islip?

If both departure and destination cities offer multiple airports, comparing them can help you save time and money.

• Airports in Washington: Washington has 3 airports - Dulles international, Ronald Reagan, Washington International.
• Airports in Islip: Islip has one airport operating, Islip - Long Island MacArthur.

Some airports have different terminals for low-cost and traditional airlines — knowing in advance can save time. You can filter results to see only the airports that suit you.

Customize your flight from Washington Dulles to Islip

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from the best airlines and travel agencies.

Other popular destinations

Thinking about United States? You might also consider: Las Vegas, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.