Cheap Flights from Islip to Baltimore Washington International

Compare Islip to Baltimore Washington International flight deals

Find the cheapest month or even day of the year to fly to Baltimore Washington International

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Flight deals from Islip to Baltimore Washington International

Looking for a cheap last-minute deal or the best return flight from Islip Airport to Baltimore Washington International Airport? If you want to travel next month, return fares start from $425. Find the lowest prices on one-way and return tickets right here.

Washington D.C..$425 per passenger.Departing Wed, 22 Jul, returning Tue, 28 Jul.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Islip on Wed, 22 Jul, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 28 Jul, arriving in Islip.Price includes taxes and charges.From $425, select.

Washington D.C..$428 per passenger.Departing Wed, 29 Jul, returning Tue, 4 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Islip on Wed, 29 Jul, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 4 Aug, arriving in Islip.Price includes taxes and charges.From $428, select.

Washington D.C..$428 per passenger.Departing Tue, 11 Aug, returning Tue, 18 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Islip on Tue, 11 Aug, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 18 Aug, arriving in Islip.Price includes taxes and charges.From $428, select.

Find the cheapest month to fly from Islip to Baltimore Washington International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Islip to Baltimore Washington International flights are currently cheapest in July.

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Direct flights from Islip to Baltimore Washington International

Islip to Baltimore Washington International: Alternative routes

Compare routes from Islip to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Baltimore Washington International.

Islip to Washington D.C.: Flight information

The things to know before you go.

Cheapest flight found	$425
Cheapest month to fly	July
Average flight time	1 hr, 19 mins
Most popular airline	Southwest Airlines
Average flights per week	26

Finding cheap flights from Islip to Baltimore Washington International: Frequently asked questions

How much are return flights from Islip to Baltimore Washington International?

The best price we found for a return flight from Islip to Baltimore Washington International is $425. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Islip to Baltimore Washington International?

1 hour and 19 minutes is the average flight time from Islip to Baltimore Washington International.

Which airlines fly direct from Islip to Baltimore Washington International?

Southwest Airlines flies direct from Islip to Baltimore Washington International.

How many flights are there a week from Islip to Baltimore Washington International?

As of June 2026, there are 26 flights per week flying from Islip to Baltimore Washington International.

When is the cheapest time to fly from Islip to Baltimore Washington International?

The cheapest month to fly from Islip to Baltimore Washington International is usually July.

Which upcoming date is cheapest to fly from Islip Airport to Baltimore Washington International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Islip Airport to Baltimore Washington International Airport on Wednesday, 22 July 2026.

Can I get a direct flight from Islip Airport to Baltimore Washington International Airport?

Yes – the average flight time is 1 hour and 19 minutes.

How can I find the best flight deal to Baltimore Washington International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Baltimore Washington International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Washington D.C.?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Islip Airport to Baltimore Washington International with?

Currently, Southwest Airlines offers the cheapest flight tickets to Baltimore Washington International.

Travelling from Islip Airport (ISP) to Baltimore Washington International Airport (BWI): what you need to know

Hop on a direct flight from Islip Airport to Baltimore Washington International Airport and you'll be travelling for an average of 1 hour 15 minutes.
Islip and Washington DC follow the same timezone, UTC-5.
Each week, there are 16 Islip Airport to Baltimore Washington International Airport flights. To take off early, pick the 05:25 Southwest Airlines flight. If you'd rather make the most of your day before flying, the last departure is at 18:30 with Southwest Airlines.
Arrive at the airport on time so you don't miss your ISP to BWI flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.
Travelling during a peak time like July? Major public holidays and other popular seasons can lead to longer lines and delays at check-in and security. Be extra cautious and get there up to four hours before international flights and two hours before domestic departures.
Southwest Airlines offers direct flights from Islip Airport to Baltimore Washington International Airport. Book with this popular airline, then get ready to discover the sights in Washington DC — and maybe even more of the United States if time allows.
Southwest Airlines is the airline most travellers choose for this route.
Southwest Airlines is the most punctual carrier offering ISP to BWI flights. An impressive 85.67% of its departures on this route arrive as planned.
Consider adding a stopover when booking your ticket from Islip Airport to Baltimore Washington International Airport. Just uncheck 'Direct flights only' to break up your journey, or visit a new city along the way. Here are some options between ISP and BWI:
- Raleigh / Durham Airport
- Charleston Airport
- Myrtle Beach International Airport

Handy information about Islip Airport (ISP)

You'll find ISP at 100 Arrivals Avenue.
76% of flights that depart Islip Airport arrive at their destination on time.
To reach Islip Airport from central Islip, it takes around 10 minutes if you're going by car. Of course, this depends on traffic. It's approximately 6 kilometres from the airport to the city centre.
The trip when using public transport will take about 30 minutes.
Get your break off to a stress-free start by staying near ISP. Whether you've booked an early flight from Islip Airport to Baltimore Washington International Airport or just don't want to be rushed, these hotels have you covered:

Arriving at Baltimore Washington International Airport (BWI)

The last thing you need is a lengthy trip to your hotel if you're landing late on a Islip Airport to Baltimore Washington International Airport flight. Stay at one of these accommodation options near BWI instead:
Grab a Baltimore Washington International Airport rental car and discover Washington DC and beyond with your own wheels. Dollar, Thrifty and Budget are leading providers to choose from here.
Lock in the lowest price by reserving your vehicle from Baltimore Washington International Airport about two weeks before your trip.

Getting from Baltimore Washington International Airport (BWI) to central Washington DC

Baltimore Washington International Airport is roughly 48 kilometres from the centre of Washington DC. The drive time takes around 40 minutes.
It takes roughly 50 minutes to get there using public transport.

When to fly to Baltimore Washington International Airport (BWI)

The quietest month for a flight from Islip Airport to Baltimore Washington International Airport is March, while July is the busiest. Choose the ideal time to visit Washington DC based on whether you prefer a more fast-paced or easygoing experience.
Book your flight from Islip Airport to Baltimore Washington International Airport for July if you want to go to Washington DC during its warmest month. Expect temperatures of between 19ºC and 33ºC.
January has average temperatures of between -6ºC and 10ºC. Look for cheap tickets from ISP to BWI around that time if you'd rather travel in cooler conditions.

Explore more of the United States

Washington DC has plenty to offer, but there are so many other corners of the United States you should also see. About 322 kilometres north-east of Washington DC, a trip to New York will keep you busy. Start with attractions like Central Park, Statue of Liberty and Metropolitan Museum of Art.
Philadelphia is another sought-after destination in the United States and is around 193 kilometres north-east of Washington DC. No journey is complete without dropping by Independence Hall, Liberty Bell and Philadelphia Museum of Art.