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$72+ Cheap flights from Islip to Baltimore (ISP - BWI)

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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BWI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Islip to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Baltimore (BWI). 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 September 11, 2025.

Round-trip from

$185
(Southwest)

One-way from

$72
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$281
From Islip Long Island to Baltimore/Washington
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One-way flight from Islip Long Island to Baltimore/Washington
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Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Islip to Baltimore

Cheapest flights from Islip to Baltimore
Explore the most affordable flight options available from Islip to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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.
Tue 10/216:00 amISP - BWI
Nonstop1h 15mSouthwest
Tue 10/283:00 pmBWI - ISP
Nonstop1h 05mSouthwest
Deal found 9/9$185
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:40 amISP - BWI
1 stop8h 52mFrontier
Fri 10/38:21 amBWI - ISP
1 stop8h 06mFrontier
Deal found 9/10$195
This Southwest deal was found by Cheapflights users on 9/9. 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.
Tue 9/306:05 amISP - BWI
Nonstop1h 15mSouthwest
Tue 9/3010:45 amBWI - ISP
Nonstop1h 10mSouthwest
Deal found 9/9$196
This Southwest deal was found by Cheapflights users on 9/10. 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.
Sat 10/113:10 pmISP - BWI
Nonstop1h 15mSouthwest
Sat 10/118:25 pmBWI - ISP
Nonstop1h 10mSouthwest
Deal found 9/10$216
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:37 pmISP - BWI
1 stop10h 57mFrontier
Sun 10/1211:31 amBWI - ISP
1 stop9h 21mFrontier
Deal found 9/10$221
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:37 pmISP - BWI
1 stop15h 03mMultiple Airlines
Tue 10/2811:19 amBWI - ISP
1 stop23h 18mMultiple Airlines
Deal found 9/9$234
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1711:35 amISP - BWI
1 stop21h 48mFrontier
Thu 9/189:37 pmBWI - ISP
1 stop13h 03mFrontier
Deal found 9/11$235
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:54 amISP - BWI
1 stop7h 29mFrontier
Thu 11/64:15 pmBWI - ISP
2 stops16h 39mFrontier
Deal found 9/10$238
This Southwest deal was found by Cheapflights users on 9/10. 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.
Mon 11/312:55 pmISP - BWI
Nonstop1h 15mSouthwest
Thu 11/63:45 pmBWI - ISP
Nonstop1h 10mSouthwest
Deal found 9/10$244
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2811:25 amISP - BWI
1 stop8h 22mMultiple Airlines
Tue 9/308:52 pmBWI - ISP
1 stop13h 48mMultiple Airlines
Deal found 9/8$250

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Baltimore 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 September 11, 2025.
Use the filters below to find and compare flights from Islip to Baltimore that are best for you.

Fly from

Islip

Fly to

Baltimore

Route

Depart

Return

Price

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/21

6:00 am-7:15 am

Nonstop1h 15m

Baltimore/Washington

Tue 10/28

3:00 pm-4:05 pm

Nonstop1h 05m

$185

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 10/2

11:40 am-8:32 pm

1 stop8h 52m

Baltimore/Washington

Fri 10/3

8:21 am-4:27 pm

1 stop8h 06m

$195

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 9/30

6:05 am-7:20 am

Nonstop1h 15m

Baltimore/Washington

Tue 9/30

10:45 am-11:55 am

Nonstop1h 10m

$196

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sat 10/11

3:10 pm-4:25 pm

Nonstop1h 15m

Baltimore/Washington

Sat 10/11

8:25 pm-9:35 pm

Nonstop1h 10m

$216

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/28

6:00 am-7:15 am

Nonstop1h 15m

Baltimore/Washington

Thu 10/30

10:35 pm-11:45 pm

Nonstop1h 10m

$216

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 10/9

9:37 pm-8:34 am

1 stop10h 57m

Baltimore/Washington

Sun 10/12

11:31 am-8:52 pm

1 stop9h 21m

$221

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/21

9:37 pm-12:40 pm

1 stop15h 03m

Baltimore/Washington

Tue 10/28

11:19 am-10:37 am

1 stop23h 18m

$234

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/28

6:27 pm-12:40 pm

1 stop18h 13m

Baltimore/Washington

Thu 10/30

8:30 pm-10:37 am

1 stop14h 07m

$235

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 11/3

9:54 am-5:23 pm

1 stop7h 29m

Baltimore/Washington

Thu 11/6

4:15 pm-8:54 am

2 stops16h 39m

$238

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 11/3

12:55 pm-2:10 pm

Nonstop1h 15m

Baltimore/Washington

Thu 11/6

3:45 pm-4:55 pm

Nonstop1h 10m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

Best time to book a flight from Islip to Baltimore

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

What is the cheapest month to book a flight from Islip to Baltimore?

Currently, August is the cheapest month in which you can book a flight from Islip to Baltimore (average of $241). Flying from Islip to Baltimore in March is currently the most expensive (average of $290). 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 BWI?

Find hourly flight availability from Islip to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Islip to Baltimore, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 11% versus a flight at noon.

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Islip to Baltimore, such as Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • What airports do I use to fly from Islip to Baltimore?

    To fly from Islip to Baltimore, you need to book a flight from Long Island (ISP) to Baltimore/Washington (BWI). Nonstop flights to Baltimore/Washington from Islip Long Island take 1h 15m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Long Island to Baltimore/Washington offered by 1 airline.

  • How popular is this Islip to Baltimore flight route?

    The Islip Long Island to Baltimore/Washington flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Islip to Baltimore?

    Departing from Islip to Baltimore will take you 1h 15m. Islip and Baltimore are separated by a distance of 219 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Islip to Baltimore round-trip?

    Currently priced at $273, Southwest will fly you from Islip to Baltimore and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Southwest is currently priced 33% below the average price you’ll pay for this route.

  • What are the cheapest flights from Islip to Baltimore?

    Looking at all options, your cheapest flight can be booked for $104. While the most popular route (Islip Long Island - Baltimore/Washington) can be booked for $216 on average, our data indicates $317 when flying from Islip to Baltimore.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Islip to Baltimore (average of $241). Flying from Islip to Baltimore in March is currently the most expensive (average of $290). 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

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Alternative routes for Islip to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to Baltimore

Discover the top airline that operate flights from Islip to Baltimore. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$273Average$370FlexibilityNo cancel feeOn-time63%

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