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Cheap flights from Islip to Washington, D.C. from $82

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 to Washington, D.C. departing on 11/21. 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 to Washington, D.C.

Cheap round-trip flights

Frontier Logo
11:40 am - 8:32 pmISP-BWI
8h 52m1 stop
Frontier Logo
8:21 am - 4:27 pmBWI-ISP
8h 06m1 stop
$161Frontier
Find Deal
Thu, Oct 2 - Fri, Oct 3
Frontier Logo
9:49 am - 8:05 pmISP-BWI
10h 16m1 stop
Frontier Logo
9:37 pm - 10:40 amBWI-ISP
13h 03m1 stop
$201Frontier
Find Deal
Sun, Sep 28 - Thu, Oct 2
Frontier Logo
9:54 am - 5:23 pmISP-BWI
7h 29m1 stop
Frontier Logo
11:19 am - 5:42 pmBWI-ISP
6h 23m1 stop
$203Frontier
Find Deal
Mon, Nov 3 - Tue, Nov 4
Frontier Logo
9:47 pm - 8:34 amISP-BWI
10h 47m1 stop
Frontier Logo
10:00 pm - 9:04 amBWI-ISP
11h 04m1 stop
$225Frontier
Find Deal
Sun, Oct 12 - Sun, Oct 19
Frontier Logo
9:37 pm - 8:34 amISP-BWI
10h 57m1 stop
Frontier Logo
11:31 am - 8:52 pmBWI-ISP
9h 21m1 stop
$226Frontier
Find Deal
Thu, Oct 9 - Sun, Oct 12
Southwest Logo
4:55 pm - 6:10 pmISP-BWI
1h 15mnonstop
Southwest Logo
3:00 pm - 4:05 pmBWI-ISP
1h 05mnonstop
$237Southwest
Find Deal
Tue, Oct 21 - Wed, Oct 22
Logo
9:37 pm - 12:40 pmISP-BWI
15h 03m1 stop
Logo
5:51 pm - 12:00 pmBWI-ISP
18h 09m2 stops
$243
Find Deal
Tue, Oct 21 - Sat, Nov 1
Southwest Logo
4:55 pm - 6:10 pmISP-BWI
1h 15mnonstop
Southwest Logo
8:25 pm - 9:35 pmBWI-ISP
1h 10mnonstop
$246Southwest
Find Deal
Wed, Oct 15 - Sat, Nov 1
Southwest Logo
5:30 am - 6:45 amISP-BWI
1h 15mnonstop
Southwest Logo
10:35 pm - 11:45 pmBWI-ISP
1h 10mnonstop
$255Southwest
Find Deal
Mon, Oct 13 - Mon, Oct 20
Southwest Logo
4:55 pm - 6:10 pmISP-BWI
1h 15mnonstop
Southwest Logo
11:35 am - 12:45 pmBWI-ISP
1h 10mnonstop
$256Southwest
Find Deal
Tue, Oct 28 - Fri, Oct 31

Frontier flights from Islip to Baltimore

Our best Frontier deals on Islip to Baltimore flight tickets
Frontier
Oct 2
ISP11:40 amIslip Long Island
8h 52m
1 stop
BWI8:32 pmBaltimore/Washington
Oct 3
BWI8:21 amBaltimore/Washington
8h 06m
1 stop
ISP4:27 pmIslip Long Island
$161
Find similar
Frontier
Sep 25
ISP11:40 amIslip Long Island
8h 52m
1 stop
BWI8:32 pmBaltimore/Washington
Sep 29
BWI8:21 amBaltimore/Washington
8h 06m
1 stop
ISP4:27 pmIslip Long Island
$188
Find similar
Frontier
Sep 28
ISP9:49 amIslip Long Island
10h 16m
1 stop
BWI8:05 pmBaltimore/Washington
Oct 2
BWI9:37 pmBaltimore/Washington
13h 03m
1 stop
ISP10:40 amIslip Long Island
$201
Find similar

Southwest flights from Islip to Baltimore

Our best Southwest deals on Islip to Baltimore flight tickets
Southwest
Oct 21
ISP4:55 pmIslip Long Island
1h 15m
BWI6:10 pmBaltimore/Washington
Oct 22
BWI3:00 pmBaltimore/Washington
1h 05m
ISP4:05 pmIslip Long Island
$237
Find similar
Southwest
Oct 15
ISP4:55 pmIslip Long Island
1h 15m
BWI6:10 pmBaltimore/Washington
Nov 1
BWI8:25 pmBaltimore/Washington
1h 10m
ISP9:35 pmIslip Long Island
$246
Find similar
Southwest
Oct 13
ISP5:30 amIslip Long Island
1h 15m
BWI6:45 amBaltimore/Washington
Oct 20
BWI10:35 pmBaltimore/Washington
1h 10m
ISP11:45 pmIslip Long Island
$255
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
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

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

$161

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sun 9/28

9:49 am-8:05 pm

1 stop10h 16m

Baltimore/Washington

Thu 10/2

9:37 pm-10:40 am

1 stop13h 03m

$201

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 11/3

9:54 am-5:23 pm

1 stop7h 29m

Baltimore/Washington

Tue 11/4

11:19 am-5:42 pm

1 stop6h 23m

$203

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sun 10/12

9:47 pm-8:34 am

1 stop10h 47m

Baltimore/Washington

Sun 10/19

10:00 pm-9:04 am

1 stop11h 04m

$225

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

$226

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/21

4:55 pm-6:10 pm

Nonstop1h 15m

Baltimore/Washington

Wed 10/22

3:00 pm-4:05 pm

Nonstop1h 05m

$237

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/21

9:37 pm-12:40 pm

1 stop15h 03m

Baltimore/Washington

Sat 11/1

5:51 pm-12:00 pm

2 stops18h 09m

$243

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 10/15

4:55 pm-6:10 pm

Nonstop1h 15m

Baltimore/Washington

Sat 11/1

8:25 pm-9:35 pm

Nonstop1h 10m

$246

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 10/13

5:30 am-6:45 am

Nonstop1h 15m

Baltimore/Washington

Mon 10/20

10:35 pm-11:45 pm

Nonstop1h 10m

$255

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 10/28

4:55 pm-6:10 pm

Nonstop1h 15m

Baltimore/Washington

Fri 10/31

11:35 am-12:45 pm

Nonstop1h 10m

$256

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 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 April, then May is your next best option. Flight prices from Islip to Baltimore during May average around $308.

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

The cheapest day to depart from Islip to Baltimore is on a Tuesday. Travelers who choose to depart for Baltimore on a Tuesday will often find tickets for as low as $347. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $544. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baltimore.

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

Flying to Baltimore from Islip in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $354 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $541.

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.

When to book flights from Islip to Baltimore

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

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

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

Best Price Found

$176

Fastest flight time

1h 15m

Direct flights

Every day

Airports in Baltimore

1 airport
The best one-way flight to Baltimore from Islip in the past 72 hours is $176. The best round-trip flight deal from Islip to Baltimore found on momondo in the last 72 hours is $323.
The fastest flight from Islip to Baltimore takes 1h 15m
Direct flights go from Islip to Baltimore every day.
There is 1 airport near Baltimore: 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 to Baltimore?

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

Best airlines flying from Islip to Baltimore

Compare and see reviews for airlines that fly from Islip to Baltimore with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $273Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

  • Southwest Flights From Islip to Baltimore

    Southwest operates around 15 flights from Islip to Baltimore every week. The average price of these flights found in the last 72 hours has been $372, but momondo users have found Southwest deals from Islip to Baltimore from as low as $273 round-trip. Southwest has been scored 8.0/10 in 4,242 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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