$519 Cheap Flights from Mobile (MOB) to Islip (ISP)

View $519 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)

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Cheap Flights from Mobile to Islip (MOB-ISP)

Prices were available within the past 7 days and start at $519 for one-way flights and $889 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 23 - Tue, Sep 30
MOB
Mobile
ISP
Islip
$889 Roundtrip, found 2 days ago
$889
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 23 from Mobile to Islip, returning Tue, Sep 30, priced at $889 found 2 days ago
United
Mon, Sep 22 - Sat, Sep 27
MOB
Mobile
ISP
Islip
$1,009 Roundtrip, found 2 days ago
$1,009
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from Mobile to Islip, returning Sat, Sep 27, priced at $1,009 found 2 days ago
United
Tue, Sep 23 - Sat, Sep 27
MOB
Mobile
ISP
Islip
$1,021 Roundtrip, found 2 days ago
$1,021
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 23 from Mobile to Islip, returning Sat, Sep 27, priced at $1,021 found 2 days ago
Delta
Sun, Sep 21 - Mon, Sep 22
MOB
Mobile
ISP
Islip
$1,205 Roundtrip, found 2 days ago
$1,205
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Sep 21 from Mobile to Islip, returning Mon, Sep 22, priced at $1,205 found 2 days ago

Frequently asked questions

How much does a flight from Mobile Regional Airport (MOB) to MacArthur Airport (ISP) cost?
Secure a cheap one-way flight from $519 or cheap return flight from $889 from Mobile Regional Airport (MOB) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)?
September is the cheapest month to fly from MOB to ISP. Avoiding peak travel times is often the key to finding better fares.
What is the cheapest airline that flies from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from MOB to ISP. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)?
You'll need to take a flight with a layover when traveling from Mobile Regional Airport (MOB) to MacArthur Airport (ISP). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from MOB to ISP?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)?
Book a flight from Mobile Regional Airport (MOB) to MacArthur Airport (ISP) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Mobile Regional Airport (MOB) to MacArthur Airport (ISP) last-minute?
Booking your ticket from MOB to ISP just before your trip is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a MOB to ISP flight and hotel package?
You'll generally save money by securing a MOB to ISP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your preferred accommodations and flights, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Mobile Regional Airport (MOB) to MacArthur Airport (ISP)?
If you reserved your MOB to ISP flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Mobile Regional
Destination airport
MacArthur
Roundtrip price
$888
Distance
1096 mi

Book with confidence

Book with confidence

Mobile to Islip Flights

The cheapest times to fly from Mobile to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Mobile to Islip are during the month of September. You can find some of the cheapest flights from Mobile to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Mobile to Islip

Sunday is one of the best days to book for cheap flights from Mobile to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Mobile to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Mobile to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $519 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Mobile to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Mobile to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Mobile to Islip Flights

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*Available to One Key members.