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$109+ Cheap flights from Islip, NY 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BWI
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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Cheap 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 April 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/55:38 pm
ISP
-
BWI
2 stops45h 46m
Frontier
Tue 5/121:20 pm
BWI
-
ISP
1 stop20h 45m
Frontier
Deal found 4/20$168
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/55:38 pm
ISP
-
BWI
2 stops45h 46m
Frontier
Wed 5/133:26 pm
BWI
-
ISP
1 stop19h 01m
Frontier
Deal found 4/20$177
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/1311:00 am
ISP
-
BWI
1 stop22h 15m
Frontier
Tue 5/191:20 pm
BWI
-
ISP
1 stop20h 45m
Frontier
Deal found 4/20$180
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/1311:00 am
ISP
-
BWI
1 stop22h 15m
Multiple Airlines
Mon 5/186:02 pm
BWI
-
ISP
2 stops40h 03m
Multiple Airlines
Deal found 4/21$184
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/55:38 pm
ISP
-
BWI
2 stops45h 46m
Frontier
Mon 5/113:26 pm
BWI
-
ISP
1 stop19h 34m
Frontier
Deal found 4/20$185
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Thu 5/711:12 am
ISP
-
BWI
1 stop9h 52m
Frontier
Tue 5/121:20 pm
BWI
-
ISP
1 stop20h 45m
Frontier
Deal found 4/21$196
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Thu 5/711:12 am
ISP
-
BWI
1 stop9h 52m
Frontier
Thu 5/149:59 pm
BWI
-
ISP
1 stop12h 06m
Frontier
Deal found 4/20$200

Find 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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$168
(Kiwi.com)

One-way from

$109
(Kiwi.com)

Popular in

February

Cheapest in

January

Average price

$343
Provider with most accurate pricing for Islip Long Island-Baltimore/Washington flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Baltimore/Washington flights.
Search Deals
From Islip Long Island to Baltimore/Washington
Search Deals
One-way flight from Islip Long Island to Baltimore/Washington
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 24, 2026.
Use the filters below to find and compare flights from Islip to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sat 5/16

11:00 am-10:57 pm

2 stops11h 57m

Baltimore/Washington

Wed 5/20

3:26 pm-10:27 am

1 stop19h 01m

$248

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sat 5/16

4:40 pm-6:00 pm

Nonstop1h 20m

Baltimore/Washington

Wed 5/20

9:00 pm-10:10 pm

Nonstop1h 10m

$260

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 5/18

6:00 am-7:20 am

Nonstop1h 20m

Baltimore/Washington

Wed 5/20

10:45 am-11:55 am

Nonstop1h 10m

$268

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 5/20

4:10 pm-5:30 pm

Nonstop1h 20m

Baltimore/Washington

Fri 5/22

7:10 pm-8:25 pm

Nonstop1h 15m

$311

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 5/14

8:35 am-9:55 am

Nonstop1h 20m

Baltimore/Washington

Fri 5/15

7:10 pm-8:25 pm

Nonstop1h 15m

$320

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 5/13

4:10 pm-5:30 pm

Nonstop1h 20m

Baltimore/Washington

Sun 5/17

10:40 am-11:50 am

Nonstop1h 10m

$344

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 5/26

12:30 pm-1:45 pm

Nonstop1h 15m

Baltimore/Washington

Thu 5/28

7:10 pm-8:25 pm

Nonstop1h 15m

$370

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 8/21

12:35 pm-1:50 pm

Nonstop1h 15m

Baltimore/Washington

Mon 8/24

8:25 am-9:40 am

Nonstop1h 15m

$381
Quickest round-trip

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 5/8

12:30 pm-1:45 pm

Nonstop1h 15m

Baltimore/Washington

Tue 5/12

12:40 pm-1:50 pm

Nonstop1h 10m

$398

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 5/7

4:30 pm-5:50 pm

Nonstop1h 20m

Baltimore/Washington

Mon 5/11

10:20 pm-11:30 pm

Nonstop1h 10m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/19

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Islip to Baltimore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Baltimore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Baltimore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Baltimore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, New York to Baltimore?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Baltimore (average of $255). Flying from Islip, New York to Baltimore in February is currently the most expensive (average of $649). 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 April 24, 2026.

When flying from Islip, New York 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 19% versus a flight at noon.

How much does it cost to fly round-trip from Islip, New York to Baltimore?

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 April 24, 2026.
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
4,334 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 3 outbound flights from Long Island to Baltimore/Washington offered by 1 airline.

  • How popular is this Islip, New York to Baltimore flight route?

    This flight path from Islip Long Island to Baltimore/Washington was viewed by 21 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, New York to Baltimore?

    A quick flight from Islip, New York to Baltimore can take about 1h 20m. Frontier provides one of the quickest options available for as low as $260. The distance from Islip, New York to Baltimore is about 219 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Southwest ($237), offers the cheapest pricing from Islip, New York to Baltimore. Southwest is priced at 43% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Islip, New York to Baltimore?

    Looking at all options, your cheapest flight can be booked for $129. While the most popular route (Islip Long Island - Baltimore/Washington) can be booked for $244 on average, our data indicates $367 when flying from Islip, New York 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, New York to Baltimore?

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to Baltimore (average of $255). Flying from Islip, New York to Baltimore in February is currently the most expensive (average of $649). 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

Browse thousands of different options on Cheapflights for your next trip

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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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$237Average$411FlexibilityNo cancel feeOn-time63%

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