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Cheap flights from Islip, New York to Washington, D.C. from $89

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Washington, D.C. departing on 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:07 pm - 4:40 pm
ISP
-
BWI
24h 33m
1 stop
Frontier Logo
10:00 pm - 9:13 am
BWI
-
ISP
11h 13m
1 stop
$235Frontier
Thu, May 14 - Sun, May 17
Southwest Logo
5:45 am - 7:05 am
ISP
-
BWI
1h 20mnonstop
Southwest Logo
10:30 am - 11:40 am
BWI
-
ISP
1h 10mnonstop
$263Southwest
Tue, Mar 17 - Tue, Mar 24
Frontier Logo
4:07 pm - 8:12 am
ISP
-
BWI
16h 05m
2 stops
Frontier Logo
10:00 pm - 9:13 am
BWI
-
ISP
11h 13m
1 stop
$265Frontier
Fri, May 15 - Sun, May 17
Multiple Airlines Logo
4:07 pm - 11:57 pm
ISP
-
BWI
7h 50m
1 stop
Multiple Airlines Logo
7:34 pm - 11:10 am
BWI
-
ISP
39h 36m
2 stops
$267Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
4:07 pm - 11:01 am
ISP
-
BWI
18h 54m
1 stop
Multiple Airlines Logo
10:00 pm - 9:13 am
BWI
-
ISP
11h 13m
1 stop
$269Multiple Airlines
Fri, May 15 - Sun, May 17
Southwest Logo
12:20 pm - 1:35 pm
ISP
-
BWI
1h 15mnonstop
Southwest Logo
9:40 pm - 10:50 pm
BWI
-
ISP
1h 10mnonstop
$272Southwest
Wed, Mar 11 - Wed, Mar 11
Multiple Airlines Logo
9:33 am - 7:30 pm
ISP
-
BWI
9h 57m
1 stop
Multiple Airlines Logo
9:39 pm - 1:31 pm
BWI
-
ISP
15h 52m
2 stops
$274Multiple Airlines
Wed, Mar 4 - Thu, Mar 5
Multiple Airlines Logo
9:33 am - 7:30 pm
ISP
-
BWI
9h 57m
1 stop
Multiple Airlines Logo
4:53 pm - 5:46 pm
BWI
-
ISP
24h 53m
2 stops
$279Multiple Airlines
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
3:50 pm - 4:59 pm
ISP
-
BWI
25h 09m
2 stops
Frontier Logo
10:00 pm - 9:13 am
BWI
-
ISP
11h 13m
1 stop
$280Frontier
Fri, Apr 17 - Thu, Apr 30
Southwest Logo
5:45 am - 7:05 am
ISP
-
BWI
1h 20mnonstop
Southwest Logo
4:10 pm - 5:20 pm
BWI
-
ISP
1h 10mnonstop
$281Southwest
Wed, Mar 11 - Mon, Mar 16

Southwest flights from Islip, New York to Baltimore

Our best Southwest deals on Islip, New York to Baltimore flight tickets
Southwest
Mar 17
ISP5:45 amIslip Long Island
1h 20m
BWI7:05 amBaltimore/Washington
Mar 24
BWI10:30 amBaltimore/Washington
1h 10m
ISP11:40 amIslip Long Island
$263
Southwest
Mar 11
ISP12:20 pmIslip Long Island
1h 15m
BWI1:35 pmBaltimore/Washington
Mar 11
BWI9:40 pmBaltimore/Washington
1h 10m
ISP10:50 pmIslip Long Island
$272
Southwest
Mar 11
ISP5:45 amIslip Long Island
1h 20m
BWI7:05 amBaltimore/Washington
Mar 16
BWI4:10 pmBaltimore/Washington
1h 10m
ISP5:20 pmIslip Long Island
$281

Frontier flights from Islip, New York to Baltimore

Our best Frontier deals on Islip, New York to Baltimore flight tickets
Frontier
May 14
ISP4:07 pmIslip Long Island
24h 33m
1 stop
BWI4:40 pmBaltimore/Washington
May 17
BWI10:00 pmBaltimore/Washington
11h 13m
1 stop
ISP9:13 amIslip Long Island
$235
Frontier
Feb 26
ISP3:34 pmIslip Long Island
28h 45m
1 stop
BWI8:19 pmBaltimore/Washington
Mar 1
BWI5:08 pmBaltimore/Washington
14h 30m
1 stop
ISP7:38 amIslip Long Island
$241
Frontier
May 15
ISP4:07 pmIslip Long Island
16h 05m
2 stops
BWI8:12 amBaltimore/Washington
May 17
BWI10:00 pmBaltimore/Washington
11h 13m
1 stop
ISP9:13 amIslip Long Island
$265

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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, momondo users made 832,500 searches. Data last updated February 19, 2026.
Use the filters below to find and compare flights from Islip, New York to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 5/14

4:07 pm-4:40 pm

1 stop24h 33m

Baltimore/Washington

Sun 5/17

10:00 pm-9:13 am

1 stop11h 13m

$235

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 3/17

5:45 am-7:05 am

Nonstop1h 20m

Baltimore/Washington

Tue 3/24

10:30 am-11:40 am

Nonstop1h 10m

$263

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 5/15

4:07 pm-8:12 am

2 stops16h 05m

Baltimore/Washington

Sun 5/17

10:00 pm-9:13 am

1 stop11h 13m

$265

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 4/16

4:07 pm-11:57 pm

1 stop7h 50m

Baltimore/Washington

Mon 4/20

7:34 pm-11:10 am

2 stops39h 36m

$267

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 5/15

4:07 pm-11:01 am

1 stop18h 54m

Baltimore/Washington

Sun 5/17

10:00 pm-9:13 am

1 stop11h 13m

$269

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 3/11

12:20 pm-1:35 pm

Nonstop1h 15m

Baltimore/Washington

Wed 3/11

9:40 pm-10:50 pm

Nonstop1h 10m

$272

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 3/4

9:33 am-7:30 pm

1 stop9h 57m

Baltimore/Washington

Thu 3/5

9:39 pm-1:31 pm

2 stops15h 52m

$274

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 3/4

9:33 am-7:30 pm

1 stop9h 57m

Baltimore/Washington

Sat 3/7

4:53 pm-5:46 pm

2 stops24h 53m

$279

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 4/17

3:50 pm-4:59 pm

2 stops25h 09m

Baltimore/Washington

Thu 4/30

10:00 pm-9:13 am

1 stop11h 13m

$280

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 3/11

5:45 am-7:05 am

Nonstop1h 20m

Baltimore/Washington

Mon 3/16

4:10 pm-5:20 pm

Nonstop1h 10m

$281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Islip, New York to Baltimore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Baltimore?

If you’re not able to fly to Baltimore in January, then April is your next best option. Flight prices from Islip, New York to Baltimore during April average around $297.

What is the cheapest time of day to depart on your flight to Baltimore?

Flying to Baltimore from Islip, New York in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $413 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $544.

What is the cheapest Islip Long Island to Baltimore/Washington flight route?

Fly from Islip Long Island to Baltimore/Washington for the best Islip Long Island - Baltimore/Washington flight prices

What cabin class options are available on Islip Long Island to Baltimore/Washington flights?

There is only 1 cabin class available to choose from on Islip Long Island to Baltimore/Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Islip, New York to Baltimore flights?

You could potentially save up to 30% on your flight if you consider stops on a Islip, New York to Baltimore flight.

When to book flights from Islip, New York to Baltimore

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Baltimore according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Baltimore (ISP to BWI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Baltimore

Best Price Found

$162

Fastest flight time

1h 15m

Direct flights

Mon, Tue, Wed, Thu, Sat and Sun

Airports in Baltimore

1 airport
The best one-way flight to Baltimore from Islip, New York in the past 72 hours is $162. The best round-trip flight deal from Islip, New York to Baltimore found on momondo in the last 72 hours is $344.
The fastest flight from Islip, New York to Baltimore takes 1h 15m
Direct flights go from Islip, New York to Baltimore on Monday, Tuesday, Wednesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Baltimore. From Islip, New York there are direct flights to Baltimore/Washington (BWI).
Search flight deals

  • How far is Islip Long Island to Baltimore/Washington by plane?

    The distance between Islip Long Island and Baltimore/Washington is about 205.5 mi. 1h 15m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Islip Long Island Airport to Baltimore/Washington Airport?

    Prices for flights from Islip Long Island Airport to Baltimore/Washington Airport refresh daily.

  • How many operators does momondo search for flights from Islip Long Island Airport to Baltimore/Washington Airport?

  • How old do you have to be to fly from Islip Long Island Airport to Baltimore/Washington Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Baltimore/Washington Airport.

  • What documentation or ID do you need to fly to Baltimore/Washington Airport?

    The travel and health documents required for your trip to Baltimore/Washington Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Baltimore/Washington Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Islip, New York to Baltimore?

  • What is the most popular airline from Islip, New York to Baltimore?

Best airlines flying from Islip, New York to Baltimore

Compare and see reviews for airlines that fly from Islip, New York to Baltimore with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $242Free CancellationRating
8.0
4,295 reviews
Search Southwest flights

  • Southwest Flights From Islip, New York to Baltimore

    Southwest operates around 22 flights from Islip, New York to Baltimore every week. The average price of these flights found in the last 72 hours has been $371, but momondo users have found Southwest deals from Islip, New York to Baltimore from as low as $242 round-trip. Southwest has been scored 8.0/10 in 4,295 reviews.

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Baltimore?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Baltimore from Islip.

Can I find flights from Islip to Baltimore with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Islip to Baltimore flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to Baltimore?

Once all potential Islip to Baltimore flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Islip to Baltimore right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Islip to Baltimore flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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