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Cheap flights from Islip (ISP) to Washington, D.C. (WAS) from $135

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 7/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ISP — WAS
jun. 11 — jun. 181
From?
To?
mar. 6/11
mar. 6/18
1 adult, Economy
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Cheap flight deals from Islip to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Washington, D.C. (WAS). 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 junio 6, 2024.

Round-trip from

$234

One-way from

$135
From Islip Long Island to Washington, D.C. (WAS)
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One-way flight from Islip Long Island to Washington, D.C. (WAS)
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How far in advance should I book a flight from Islip, New York to Washington, D.C.?

To save on the cost of your flight from Islip, New York to Washington, D.C., book at least 51 days before your planned departure. Booking around this time can save you about 132% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $263 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $423.

What is the cheapest month to fly from Islip, New York to Washington, D.C.?

October is one of the best times of the year to fly to Washington, D.C. from Islip, New York. Prices for October average $220 per person but you can even find prices for as low as $108. The most expensive prices can be found in the month of February. Opting for a October flight can save you 10% on your journey compared to booking in February

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

When flying from Islip, New York to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Islip to Washington, D.C. flights in June & July 2024

Find cheap flight options from Islip to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on junio 6, 2024.
jue. 7/45:45 pmISP - BWI
1 stop14h 05mFrontier
jue. 7/119:43 pmBWI - ISP
1 stop12h 46mFrontier
Deal found 6/4$258
mar. 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
mar. 7/93:37 pmBWI - ISP
1 stop16h 21mFrontier
Deal found 6/4$266
jue. 7/41:05 pmISP - BWI
2 stops19h 30mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/4$294
jue. 7/41:05 pmISP - BWI
2 stops19h 30mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/6$299
jue. 7/41:05 pmISP - BWI
3 stops27h 26mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/6$316
jue. 7/41:05 pmISP - BWI
3 stops27h 26mMultiple Airlines
jue. 7/119:45 pmBWI - ISP
2 stops19h 22mMultiple Airlines
Deal found 6/4$322
jue. 7/45:45 pmISP - BWI
1 stop14h 05mFrontier
vie. 7/128:20 pmBWI - ISP
1 stop14h 31mFrontier
Deal found 6/5$327
lun. 7/294:52 pmISP - BWI
1 stop21h 55mFrontier
lun. 8/52:23 pmBWI - ISP
1 stop18h 16mFrontier
Deal found 6/4$336
jue. 7/41:05 pmISP - BWI
3 stops27h 26mMultiple Airlines
jue. 7/111:05 pmBWI - ISP
3 stops28h 02mMultiple Airlines
Deal found 6/6$357

Islip to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Islip and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
jue. 9/1910:00 amISP - BWI
1 stop10h 45mFrontier
lun. 9/303:25 pmBWI - ISP
1 stop17h 01mFrontier
Deal found 6/5$234
mar. 9/103:03 pmISP - BWI
1 stop5h 23mFrontier
mié. 9/253:25 pmBWI - ISP
1 stop17h 01mFrontier
Deal found 6/5$246
jue. 7/45:45 pmISP - BWI
1 stop14h 05mFrontier
jue. 7/119:43 pmBWI - ISP
1 stop12h 46mFrontier
Deal found 6/4$258
mar. 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
mar. 7/93:37 pmBWI - ISP
1 stop16h 21mFrontier
Deal found 6/4$266
vie. 9/610:00 amISP - BWI
1 stop10h 45mFrontier
lun. 9/99:10 pmBWI - ISP
1 stop11h 45mFrontier
Deal found 6/5$278
jue. 7/41:05 pmISP - BWI
2 stops19h 30mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/4$294
jue. 7/41:05 pmISP - BWI
2 stops19h 30mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/6$299
jue. 7/41:05 pmISP - BWI
3 stops27h 26mMultiple Airlines
jue. 7/1110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/6$316
jue. 7/41:05 pmISP - BWI
3 stops27h 26mMultiple Airlines
jue. 7/119:45 pmBWI - ISP
2 stops19h 22mMultiple Airlines
Deal found 6/4$322

Islip to Washington, D.C. flights leaving soon

Find last-minute flight options from Islip to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
mié. 6/124:46 pmISP - BWI
1 stop21h 56mFrontier
mié. 6/198:26 pmBWI - ISP
1 stop14h 08mFrontier
Deal found 6/5$664
vie. 6/149:53 amISP - BWI
3 stops11h 35mMultiple Airlines
lun. 6/175:45 amBWI - ISP
2 stops11h 22mMultiple Airlines
Deal found 6/5$707
vie. 6/141:57 pmISP - BWI
2 stops18h 38mMultiple Airlines
lun. 6/175:45 amBWI - ISP
2 stops11h 22mMultiple Airlines
Deal found 6/5$726
jue. 6/131:05 pmISP - BWI
2 stops11h 40mMultiple Airlines
vie. 6/145:45 amBWI - ISP
2 stops11h 22mMultiple Airlines
Deal found 6/4$776
vie. 6/1411:22 amISP - BWI
1 stop28h 33mFrontier
lun. 6/178:38 amBWI - ISP
1 stop23h 02mFrontier
Deal found 6/5$814
jue. 6/1311:37 amISP - BWI
1 stop8h 08mFrontier
vie. 6/148:21 pmBWI - ISP
1 stop14h 08mFrontier
Deal found 6/4$820
vie. 6/144:46 pmISP - BWI
1 stop22h 02mFrontier
lun. 6/178:38 amBWI - ISP
1 stop23h 02mFrontier
Deal found 6/5$826
sáb. 6/154:46 pmISP - BWI
1 stop21h 56mFrontier
dom. 6/169:43 pmBWI - ISP
1 stop12h 46mFrontier
Deal found 6/6$942
mar. 6/119:53 pmISP - BWI
1 stop9h 54mFrontier
jue. 6/139:17 amBWI - ISP
1 stop10h 01mFrontier
Deal found 6/5$988

One-way flights to Washington, D.C. from Islip

Search for one-way flight options from Islip to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
mar. 7/169:43 pmISP - BWI
1 stop10h 07mFrontier
Deal found 6/5$135
jue. 6/201:05 pmISP - BWI
2 stops19h 30mMultiple Airlines
Deal found 6/5$153
lun. 7/295:47 pmISP - BWI
3 stops28h 38mMultiple Airlines
Deal found 6/5$161
vie. 6/211:57 pmISP - BWI
2 stops18h 38mMultiple Airlines
Deal found 6/5$174
dom. 7/218:59 pmISP - BWI
1 stop20h 44mFrontier
Deal found 6/5$179
lun. 7/294:52 pmISP - BWI
1 stop21h 55mFrontier
Deal found 6/5$180
jue. 6/201:05 pmISP - BWI
3 stops23h 32mMultiple Airlines
Deal found 6/5$188
vie. 6/211:57 pmISP - BWI
3 stops26h 34mMultiple Airlines
Deal found 6/5$215
lun. 7/291:57 pmISP - BWI
2 stops18h 43mMultiple Airlines
Deal found 6/5$255

Find flights from Islip to Washington, D.C. within your budget

Customize your flight search to find flights from Islip to Washington, D.C. 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 3,050,429 searches. Data last updated junio 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$234 - $322

Route

Depart

Return

Price

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 9/19

1 stop10h 45m

Baltimore/Washington

lun. 9/30

1 stop17h 01m

$234

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

mar. 9/10

1 stop5h 23m

Baltimore/Washington

mié. 9/25

1 stop17h 01m

$246

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 7/4

1 stop14h 05m

Baltimore/Washington

jue. 7/11

1 stop12h 46m

$258

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

mar. 7/2

1 stop10h 04m

Baltimore/Washington

mar. 7/9

1 stop16h 21m

$266

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

vie. 9/6

1 stop10h 45m

Baltimore/Washington

lun. 9/9

1 stop11h 45m

$278

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 7/4

2 stops19h 30m

Baltimore/Washington

jue. 7/11

2 stops18h 27m

$282

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 7/4

2 stops19h 30m

Baltimore/Washington

jue. 7/11

2 stops18h 27m

$294

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 7/4

3 stops27h 26m

Baltimore/Washington

jue. 7/11

2 stops18h 27m

$311

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

jue. 7/4

3 stops27h 26m

Baltimore/Washington

jue. 7/11

2 stops19h 22m

$322

Flights are sorted by cheapest first

Deals found on 6/5

What is the cheapest day to fly from Islip, New York to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Islip to Washington, D.C.. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Islip, New York to Washington, D.C. flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Islip to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

If weather is an important factor for your trip to Washington, D.C., 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 Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated junio 6, 2024.
Frontier
6.2
Okay
3,985 reviews

Boarding

6.5

Overall

6.2

Comfort

5.8

Entertainment

4.9

Food

5.1

Crew

7.0

Reviews

1 / 10

I'd thought there would be a complimentary drink atleast.

Frontier
6.2
Okay
3,985 reviews
Frontier
6.2
Okay
3,985 reviews

Boarding

6.5

Overall

6.2

Comfort

5.8

Entertainment

4.9

Food

5.1

Crew

7.0

Reviews

1 / 10

I'd thought there would be a complimentary drink atleast.

Related info for your journey

Find useful and relevant information for your journey from Islip to Washington, D.C.. 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 Washington, D.C.?

    Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Washington, D.C. from Islip. Booking flights from Long Island (ISP) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 0 different airlines.

  • Can I find flights from Islip, New York to Washington, D.C. for under $300 on Cheapflights?

    Yes, there are multiple flights from Islip, New York to Washington, D.C. for under $300. The cheapest flight booked recently is on Frontier for just $234, but on average you can expect to pay $330.

  • Are there last-minute flights available from Islip, New York to Washington, D.C. for under $700?

    There are currently 11+ open flights from Islip, New York to Washington, D.C. within the next 7 days for less than $700.

  • What is the cheapest airline to fly from Islip, New York to Washington, D.C. round-trip?

    According to our current data, Frontier ($234), offers the cheapest pricing from Islip, New York to Washington, D.C..

  • What does ISP to IAD mean?

    ISP stands for Islip Long Island Airport, while IAD stands for Washington, D.C. Dulles Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Ready for more IATA code knowledge? These are related airports for your current travel destination: Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA).

  • Can I find deals for flights from Islip to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your Islip to Washington, D.C. flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Islip to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter Islip to Washington, D.C. flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Islip to Washington, D.C. that include hotel bookings?

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

  • How can I find direct flights from Islip to Washington, D.C.?

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

  • Can I find deals for business class flights from Islip to Washington, D.C.?

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

  • Can I find deals for flights from Islip to Washington, D.C. that allow pets onboard?

    Many airlines flying from Islip to Washington, D.C. offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Islip to Washington, D.C.?

    Yes, you can often find last-minute deals on Islip to Washington, D.C. flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Islip, New York to Washington, D.C. flight deals updated?

    The Islip, New York to Washington, D.C. flight deals you see on this page were last updated on 6/6.

  • What is the cheapest month to book a flight from Islip, New York to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to Washington, D.C. (average of $278). Flying from Islip, New York to Washington, D.C. in June is currently the most expensive (average of $382). 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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Alternative routes for Islip to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.

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Search flights from Islip to Washington, D.C. by cabin class

Find flights from Islip to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
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Prem Econ Class
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Hourly flight availability from Islip to Washington, D.C.

Find hourly flight availability from Islip to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 6, 2024.
25%of flight departuresEarly morningMidnight to 6 am
50%of flight departuresMorning6 am to noon
25%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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