$108+ Cheap flights from Islip, NY (ISP) to District of Columbia
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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Islip to District of Columbia 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 District of Columbia
Keep the following information in mind while searching for Islip to District of Columbia flight deals. Data was last updated March 25, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $195 (JetBlue) |
One-way from | $108 (JetBlue) |
Popular in | December |
Cheapest in | April |
Average price | $263 |
Find flight deals from Islip to District of Columbia
Cheapest flights from Islip to District of ColumbiaExplore the most affordable flight options available from Islip to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.
Explore the most affordable flight options available from Islip to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.
This JetBlue deal was found by Cheapflights users on 3/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to District of Columbia 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 March 25, 2025.
Use the filters below to find and compare flights from Islip to District of Columbia that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
IslipWashington, D.C.
ISP - DCA
ISPDCA
Islip Long Island
Tue 5/6
6:00 am-10:37 am
1 stop4h 37m
Washington, D.C. Reagan-National
Tue 5/13
1:59 pm-9:28 pm
1 stop7h 29m
IslipWashington, D.C.
ISP - DCA
ISPDCA
Islip Long Island
Mon 5/12
5:00 am-11:10 am
1 stop6h 10m
Washington, D.C. Reagan-National
Fri 5/16
1:15 pm-10:30 pm
1 stop9h 15m
IslipWashington, D.C.
ISP - DCA
ISPDCA
Islip Long Island
Tue 6/10
6:00 am-11:37 am
1 stop5h 37m
IslipWashington, D.C.
ISP - DCA
ISPDCA
Islip Long Island
Sun 4/20
4:20 pm-10:35 pm
1 stop6h 15m
Best time to book a flight from Islip to District of Columbia
Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Islip with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Islip to District of Columbia
What is the cheapest month to book a flight from Islip, New York to District of Columbia?
Currently, August is the cheapest month in which you can book a flight from Islip, New York to District of Columbia (average of $309). Flying from Islip, New York to District of Columbia in June is currently the most expensive (average of $387). 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.
What is the cheapest time of day to fly from ISP to DC?
Find hourly flight availability from Islip to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to District of Columbia as you normally would.
Rainfall in District of Columbia by month
Plan your trip to District of Columbia by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in District of Columbia ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit District of Columbia when rainfall is around 2.6 in.
Temperature in District of Columbia by month
Plan your trip to District of Columbia by taking into account the average temperature totals by month.
If weather is an important factor for your trip to District of Columbia, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Reviews of airlines servicing District of Columbia
Get insights into the airlines that provide service to District of Columbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to District of Columbia. Reviews last updated March 25, 2025.
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Ila,Mar 2025
HOU - DAL
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Ila,Mar 2025
HOU - DAL
Food
Overall
Boarding
Crew
Entertainment
Comfort
Reviews
Ila,Mar 2025
HOU - DAL
Related info for your journey
Find useful and relevant information for your journey from Islip to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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 Islip to District of Columbia
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Islip to District of Columbia
Discover the top airline that operate flights from Islip to District of Columbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$368 | FlexibilityNo cancel fee | On-time63% |