Cheap flights from Islip to Washington, D.C. from $68

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 11/12. 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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Cheap round-trip flights

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Multiple Airlines Logo
6:27 pm - 10:45 pmISP-BWI
28h 18m1 stop
Multiple Airlines Logo
9:11 pm - 10:37 amBWI-ISP
13h 26m1 stop
$149Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 14
Frontier Logo
4:58 pm - 9:21 amISP-BWI
16h 23m1 stop
Frontier Logo
11:19 am - 10:37 amBWI-ISP
23h 18m1 stop
$164Frontier
Find Deal
Fri, Oct 31 - Tue, Nov 4
Multiple Airlines Logo
6:27 pm - 10:24 amISP-BWI
39h 57m2 stops
Multiple Airlines Logo
9:11 pm - 10:37 amBWI-ISP
13h 26m1 stop
$169Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 14
Frontier Logo
4:58 pm - 8:34 amISP-BWI
15h 36m1 stop
Frontier Logo
8:21 pm - 10:37 amBWI-ISP
14h 16m1 stop
$182Frontier
Find Deal
Wed, Oct 29 - Sun, Nov 2
Multiple Airlines Logo
6:37 pm - 8:34 amISP-BWI
13h 57m1 stop
Multiple Airlines Logo
9:36 pm - 10:37 amBWI-ISP
37h 01m2 stops
$187Multiple Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
Multiple Airlines Logo
6:37 pm - 8:34 amISP-BWI
13h 57m1 stop
Multiple Airlines Logo
4:52 pm - 5:42 pmBWI-ISP
24h 50m1 stop
$229Multiple Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
Southwest Logo
3:55 pm - 5:10 pmISP-BWI
1h 15mnonstop
Southwest Logo
10:40 pm - 11:50 pmBWI-ISP
1h 10mnonstop
$255Southwest
Find Deal
Wed, Nov 5 - Thu, Nov 6
Southwest Logo
5:40 am - 7:00 amISP-BWI
1h 20mnonstop
Southwest Logo
10:40 pm - 11:50 pmBWI-ISP
1h 10mnonstop
$315Southwest
Find Deal
Tue, Nov 4 - Thu, Nov 6
Southwest Logo
6:00 am - 7:20 amISP-BWI
1h 20mnonstop
Southwest Logo
10:05 pm - 11:20 pmBWI-ISP
1h 15mnonstop
$339Southwest
Find Deal
Sat, Apr 11 - Sat, Apr 18
Southwest Logo
5:40 am - 7:00 amISP-BWI
1h 20mnonstop
Southwest Logo
10:40 pm - 11:50 pmBWI-ISP
1h 10mnonstop
$344Southwest
Find Deal
Tue, Nov 4 - Fri, Nov 14

Southwest flights from Islip to Baltimore

Our best Southwest deals on Islip to Baltimore flight tickets
Southwest
Nov 5
ISP3:55 pmIslip Long Island
1h 15m
BWI5:10 pmBaltimore/Washington
Nov 6
BWI10:40 pmBaltimore/Washington
1h 10m
ISP11:50 pmIslip Long Island
Southwest
Nov 4
ISP5:40 amIslip Long Island
1h 20m
BWI7:00 amBaltimore/Washington
Nov 6
BWI10:40 pmBaltimore/Washington
1h 10m
ISP11:50 pmIslip Long Island
Southwest
Apr 11
ISP6:00 amIslip Long Island
1h 20m
BWI7:20 amBaltimore/Washington
Apr 18
BWI10:05 pmBaltimore/Washington
1h 15m
ISP11:20 pmIslip Long Island

Frontier flights from Islip to Baltimore

Our best Frontier deals on Islip to Baltimore flight tickets
Frontier
Oct 31
ISP4:58 pmIslip Long Island
16h 23m
1 stop
BWI9:21 amBaltimore/Washington
Nov 4
BWI11:19 amBaltimore/Washington
23h 18m
1 stop
ISP10:37 amIslip Long Island
Frontier
Oct 29
ISP4:58 pmIslip Long Island
15h 36m
1 stop
BWI8:34 amBaltimore/Washington
Nov 2
BWI8:21 pmBaltimore/Washington
14h 16m
1 stop
ISP10:37 amIslip Long Island
Frontier
Oct 29
ISP4:58 pmIslip Long Island
25h 37m
2 stops
BWI6:35 pmBaltimore/Washington
Nov 2
BWI8:21 pmBaltimore/Washington
14h 16m
1 stop
ISP10:37 amIslip Long Island

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 October 16, 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

Tue 11/4

6:27 pm-10:45 pm

1 stop28h 18m

Baltimore/Washington

Fri 11/14

9:11 pm-10:37 am

1 stop13h 26m

$149

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 10/31

4:58 pm-9:21 am

1 stop16h 23m

Baltimore/Washington

Tue 11/4

11:19 am-10:37 am

1 stop23h 18m

$164

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 11/4

6:27 pm-10:24 am

2 stops39h 57m

Baltimore/Washington

Fri 11/14

9:11 pm-10:37 am

1 stop13h 26m

$169

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 10/29

4:58 pm-8:34 am

1 stop15h 36m

Baltimore/Washington

Sun 11/2

8:21 pm-10:37 am

1 stop14h 16m

$182

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 10/30

6:37 pm-8:34 am

1 stop13h 57m

Baltimore/Washington

Mon 11/3

9:36 pm-10:37 am

2 stops37h 01m

$187

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Thu 10/30

6:37 pm-8:34 am

1 stop13h 57m

Baltimore/Washington

Mon 11/3

4:52 pm-5:42 pm

1 stop24h 50m

$229

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 11/5

3:55 pm-5:10 pm

Nonstop1h 15m

Baltimore/Washington

Thu 11/6

10:40 pm-11:50 pm

Nonstop1h 10m

$255

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 11/4

5:40 am-7:00 am

Nonstop1h 20m

Baltimore/Washington

Thu 11/6

10:40 pm-11:50 pm

Nonstop1h 10m

$315

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sat 4/11

6:00 am-7:20 am

Nonstop1h 20m

Baltimore/Washington

Sat 4/18

10:05 pm-11:20 pm

Nonstop1h 15m

$339

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 11/4

5:40 am-7:00 am

Nonstop1h 20m

Baltimore/Washington

Fri 11/14

10:40 pm-11:50 pm

Nonstop1h 10m

$344

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 typical price of a round-trip flight between Islip and Baltimore?

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 $297.

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 $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 to Baltimore flights?

No. A direct flight is the cheapest option for a flight between Islip to Baltimore.

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

$145

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 $145. The best round-trip flight deal from Islip to Baltimore found on momondo in the last 72 hours is $338.
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)
  • 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 $265Free CancellationRating
8.0
4,241 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 $383, but momondo users have found Southwest deals from Islip to Baltimore from as low as $265 round-trip. Southwest has been scored 8.0/10 in 4,241 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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1 adult
Sat 11/15
Sat 11/22

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