Last Updated on July 25, 2026 by Daniel Globe
Long Island MacArthur Airport, identified by the airport code ISP, is the main commercial airport serving Islip and much of central Long Island. As of July 26, 2026, the airport lists six airline partners: Avelo Airlines, Breeze Airways, Cape Air, Frontier Airlines, JetBlue Airways, and Southwest Airlines. Routes and operating days can change by season, so always confirm your dates before booking.
Quick Answer
The airlines currently flying from Islip’s Long Island MacArthur Airport are Avelo Airlines, Breeze Airways, Cape Air, Frontier Airlines, JetBlue Airways, and Southwest Airlines. ISP lists 16 nonstop destinations, including Boston, Baltimore/Washington, Orlando, Tampa, Fort Lauderdale, Fort Myers, Palm Beach, Charleston, and Charlotte/Concord.
Key Takeaways
- Six airlines currently serve Long Island MacArthur Airport: Avelo, Breeze, Cape Air, Frontier, JetBlue, and Southwest.
- The airport’s current nonstop network is entirely domestic, although connecting itineraries can reach destinations in the United States, Mexico, and the Caribbean.
- American, Spirit, Delta, United, Allegiant, and Sun Country are not currently listed as ISP airline partners.
- Some flights operate only on selected days or during certain seasons.
- Compare the total fare after adding bags, seats, and other optional services.
Airlines That Fly to Islip in 2026
The current airline lineup at ISP includes a mix of traditional, low-cost, ultra-low-cost, and regional carriers. This gives travelers several choices for Florida trips, northeastern connections, southern vacation destinations, and access to wider airline networks.
| Airline | Current or Advertised ISP Routes | Best Fit |
|---|---|---|
| Avelo Airlines | Charlotte/Concord through Concord-Padgett Regional Airport | Travelers visiting the Charlotte region who prefer a smaller airport |
| Breeze Airways | Charleston, Fort Myers, Myrtle Beach, Norfolk, Raleigh-Durham, Richmond, Vero Beach, Wilmington, and other schedule-dependent service | Leisure routes and smaller or underserved city pairs |
| Cape Air | Boston | Boston trips and connections through Boston Logan |
| Frontier Airlines | Fort Lauderdale, Fort Myers, Myrtle Beach, Orlando, Palm Beach, and Tampa | Travelers prioritizing low base fares |
| JetBlue Airways | Fort Lauderdale, Orlando, Palm Beach, and selected seasonal service to Fort Myers and Tampa | Florida travel with a traditional cabin-service experience |
| Southwest Airlines | Baltimore/Washington, Orlando, Palm Beach, and Tampa | Travelers seeking nonstop flights or connections through Baltimore/Washington |
Note: A route appearing on an airline or airport page does not mean it operates every day. Seasonal service, limited weekly schedules, and route changes are common at smaller airports. Check the official ISP flight-information page and the airline’s booking calendar for your dates.
Southwest Airlines
Southwest Airlines has served Long Island MacArthur Airport for many years and currently advertises nonstop service to Baltimore/Washington, Orlando, Palm Beach, and Tampa. Baltimore/Washington can also provide connections to other destinations in Southwest’s network.
One important change is that Southwest no longer uses its former open-seating system. For flights departing on or after January 27, 2026, Southwest uses assigned seating. Depending on the fare, passengers may select an eligible seat during booking, purchase another seat option, or receive a standard seat assignment at check-in.
Travelers should also avoid assuming that every Southwest ticket includes two free checked bags. Under the airline’s current fare structure, checked-bag fees may apply to Basic, Choice, and Choice Preferred fares. Free checked-bag benefits depend on the purchased fare, Rapid Rewards status, or eligible credit-card benefits. A standard carry-on bag remains included, subject to the airline’s size rules.
Pro Tip: Before selecting Southwest based on its historical baggage policy, open the fare details and confirm exactly how many checked bags your ticket includes. Review the airline’s current fare benefits.
American Airlines
| ISP Service Metric | Current Status |
|---|---|
| Listed as an ISP airline partner | No |
| Scheduled nonstop ISP routes | None shown on the current airport airline list |
| Can an American itinerary use the ISP airport code? | Do not assume so; search the exact travel dates on American’s website |
| Alternative New York-area airports | JFK, LaGuardia, and Newark may offer more American Airlines options, depending on the route |
American Airlines is not currently listed by Long Island MacArthur Airport as an airline partner. Older guides may still describe American flights from ISP, but travelers should not plan around those historical routes.
Passengers who prefer American Airlines should search nearby New York-area airports and compare the extra driving time, tolls, parking expenses, and airport congestion against the convenience of departing from ISP on another airline.
Frontier Airlines
Frontier Airlines is a current ISP carrier and focuses on low base fares. Its airport page advertises nonstop service to Fort Lauderdale, Fort Myers, Myrtle Beach, Orlando, Palm Beach, and Tampa. Not every route necessarily operates throughout the year or on every day of the week.
Frontier’s lowest advertised fare may not include every service a traveler needs. Carry-on bags, checked bags, seat selection, priority services, and bundles can increase the final price. Compare the complete checkout total rather than comparing only the first fare displayed in search results.
Frontier can be a strong choice for a traveler taking a short trip with a small personal item. A family checking several bags may find that another airline has a more competitive total cost after all extras are included.
JetBlue Airways
JetBlue currently operates from Long Island MacArthur Airport. The airport advertises daily nonstop JetBlue flights to Fort Lauderdale, Orlando, and Palm Beach, with selected seasonal flights to Fort Myers and Tampa.
JetBlue may appeal to travelers who want a more traditional onboard experience while still avoiding the larger New York City airports. However, baggage allowances, seat-selection benefits, change rules, and boarding order depend on the fare purchased.
When comparing JetBlue with Southwest or Frontier, check whether the flight is available on the required day and whether the included baggage and seat benefits justify any fare difference.
Spirit Airlines
Spirit Airlines is not currently listed as an airline partner at Long Island MacArthur Airport. Claims that Spirit presently offers ISP flights to Fort Lauderdale, Las Vegas, or other cities should be treated as outdated unless a new route is officially announced.
Travelers who specifically want Spirit may need to search departures from LaGuardia, Newark, or another nearby airport. Before choosing an alternative airport, include ground transportation, parking, tolls, and travel time in the comparison.
Delta Air Lines
Delta Air Lines is not currently listed as an ISP carrier. The former descriptions of direct ISP flights to Atlanta or Detroit are not supported by the airport’s present airline and destination information.
Passengers seeking Delta service should search nearby airports. JFK and LaGuardia generally provide more Delta options, but the convenience of the flight should be balanced against the longer and less predictable ground trip from central or eastern Long Island.
United Airlines
United Airlines is not currently listed as a carrier serving Long Island MacArthur Airport. The article’s former claim that United flies directly from ISP to Newark is outdated.
United travelers can compare Newark service with the current ISP airlines. Even when an itinerary from Newark has a lower airfare or better connection, the total journey may be less convenient after accounting for travel across the New York metropolitan area.
Other Airlines Serving Islip
Three current ISP airlines deserve special attention because they expand the airport beyond the better-known national carriers.
Avelo Airlines
Avelo Airlines currently connects ISP with the Charlotte region through Concord-Padgett Regional Airport, whose airport code is USA. Concord is northeast of central Charlotte and may be convenient for travelers whose final destination is on that side of the metropolitan area.
Check the location carefully before booking. A flight marked Charlotte/Concord does not arrive at Charlotte Douglas International Airport.
Breeze Airways
Breeze Airways has expanded rapidly at ISP. Its advertised destinations include Charleston, Fort Myers, Myrtle Beach, Norfolk, Raleigh-Durham, Richmond, Vero Beach, and Wilmington, North Carolina. Other routes may appear seasonally or as the airline updates its schedule.
Breeze also advertises some BreezeThru itineraries. These involve one stop without changing aircraft and should not be confused with nonstop flights.
Cape Air
Cape Air connects Long Island MacArthur Airport with Boston Logan International Airport. The route can serve passengers visiting Boston, connecting to another flight, or traveling onward toward New England.
Cape Air uses smaller aircraft than the mainline airlines at ISP. Travelers should review baggage limits and aircraft information before booking, especially when carrying large or heavy luggage.
Allegiant Air and Sun Country Airlines
Allegiant Air and Sun Country Airlines are not on the airport’s current airline-partner list. Older seasonal-service references should not be treated as present-day options without confirmation from the airport or airline.
Current Nonstop Destinations From Islip
Long Island MacArthur Airport currently lists the following nonstop destinations:
- Baltimore/Washington, Maryland
- Boston, Massachusetts
- Charleston, South Carolina
- Charlotte/Concord, North Carolina
- Fort Lauderdale, Florida
- Fort Myers, Florida
- Myrtle Beach, South Carolina
- Norfolk, Virginia
- Orlando, Florida
- Palm Beach, Florida
- Raleigh-Durham, North Carolina
- Richmond, Virginia
- Sarasota, Florida
- Tampa, Florida
- Vero Beach, Florida
- Wilmington, North Carolina
The exact airline, frequency, and operating period vary by route. A destination can disappear from the booking calendar during part of the year and return in another season.
A nonstop destination list is only a starting point. Your travel dates determine which airline and route are actually available.
Are There International Flights From Islip?
ISP does not currently list any scheduled international nonstop destinations. All of the airport’s published nonstop cities are within the United States.
Travelers can still reach international destinations by connecting through another airport. For example, an ISP flight to Baltimore/Washington, Boston, Orlando, or another connecting city may be combined with a second flight to Mexico, the Caribbean, Canada, Europe, or another region.
When booking a connecting itinerary, confirm that all segments appear on the same reservation whenever possible. Separate tickets can create additional risk if the first flight is delayed and causes the second flight to be missed.
How to Choose the Best Airline From Islip
Start With the Route
A nonstop flight is usually the simplest choice because it avoids missed connections and reduces total travel time. Start by checking whether any ISP airline flies directly to your destination on your required day.
Compare the Final Price
Add the cost of carry-on bags, checked bags, seat assignments, fare bundles, and change flexibility. An airline with a higher base fare may be less expensive after all required services are included.
Check the Weekly Schedule
Some ISP routes operate only a few times per week. A lower outbound fare may not help if the return flight requires staying several extra days.
Review Connection Quality
If no nonstop flight is available, compare total itinerary time, connection length, airport layout, and the number of flights available later in the day. A route with several backup flights can be safer than a connection with only one daily departure.
Consider the Entire Airport Journey
ISP may offer fewer flights than JFK, LaGuardia, or Newark, but its location can reduce driving time, parking complexity, and terminal walking. Compare the door-to-door journey rather than airfare alone.
Pro Tip: Search ISP first, then compare the same trip from JFK, LaGuardia, and Newark. Include bags, parking, tolls, fuel, train fares, and the value of your travel time before deciding.
Planning Your Trip Through Long Island MacArthur Airport
Parking
Long Island MacArthur Airport offers short-term, long-term, economy, and permit-based resident parking. The public lots are close to the terminal, and standard parking does not require an advance reservation. Rates can change, so review the official ISP parking page before leaving home.
Rental Cars and Ride-Hailing
The airport’s Ground Transportation Center is next to the main terminal and centralizes rental cars, shuttles, and ride-hailing pickups. Follow airport signs and verify the driver and vehicle before entering a requested ride.
Long Island Rail Road
The Ronkonkoma/MacArthur Airport LIRR station is north of the airport. Trains from Ronkonkoma provide service toward Penn Station and Grand Central. Travelers still need to arrange the connection between the rail station and the airport terminal, such as a ride-hailing vehicle or other local transportation.
Bus Service
Suffolk County Transit Route 6 serves Long Island MacArthur Airport. Bus schedules, fares, and stop locations can change, so consult the current transit schedule rather than relying on an older article or screenshot.
More details are available on the airport’s ground-transportation page.
Identification and Security
Adult passengers age 18 and older must present acceptable identification at the TSA checkpoint. Common options include a REAL ID-compliant driver’s license, an enhanced driver’s license, a U.S. passport, or another form on the TSA’s accepted-ID list.
Warning: Do not arrive with an expired or unacceptable ID and assume the airline can solve the problem. Check the TSA identification requirements before your trip.
When to Arrive
Follow the airline’s recommended arrival time and allow extra time when checking bags, traveling during a holiday period, flying early in the morning, or needing assistance. Even at a smaller airport, bag-drop and check-in deadlines can close before departure.
Airport Amenities
ISP provides free airport Wi-Fi, charging outlets, food and beverage options, water-bottle filling stations, shops, an outdoor pet-relief area, and a private room for nursing parents. Available hours can vary with the flight schedule.
Conclusion and Tips for Flying to Islip
Long Island MacArthur Airport can be a convenient alternative to JFK, LaGuardia, and Newark for travelers starting or ending a trip on Long Island. The current airlines are Avelo, Breeze, Cape Air, Frontier, JetBlue, and Southwest.
The most important step is to verify the route for the exact travel date. ISP relies heavily on seasonal and limited-weekly service, so an airline that serves a destination during one month may not offer it throughout the year.
Compare the complete fare, including bags and seats, and consider the full ground journey to each airport. A slightly higher ISP fare may still provide better value when it saves several hours of driving, traffic, tolls, parking, and terminal time.
If your Islip or Long Island trip includes fishing, see our guide to the best travel fishing pole before packing your equipment.
Frequently Asked Questions
What airlines fly to Islip in 2026?
Long Island MacArthur Airport currently lists Avelo Airlines, Breeze Airways, Cape Air, Frontier Airlines, JetBlue Airways, and Southwest Airlines as its airline partners.
Which major cities are connected to Islip by nonstop flights?
Current nonstop destinations include Baltimore/Washington, Boston, Charleston, Charlotte/Concord, Fort Lauderdale, Fort Myers, Myrtle Beach, Norfolk, Orlando, Palm Beach, Raleigh-Durham, Richmond, Sarasota, Tampa, Vero Beach, and Wilmington, North Carolina. Availability varies by date and season.
Does American Airlines fly from Islip?
American Airlines is not currently listed as an airline partner at Long Island MacArthur Airport. Older articles may mention historical American service, so check the airport and airline websites rather than relying on an undated route list.
Are there international flights from Islip?
There are currently no scheduled international nonstop destinations on the airport’s published route list. International trips can still be booked with a connection through another U.S. airport.
Does Southwest still use open seating?
No. Southwest transitioned to assigned seating for flights departing on or after January 27, 2026. Seat-selection options depend on the fare, Rapid Rewards status, and eligible credit-card benefits.
Does Southwest include two free checked bags?
Not for every passenger or fare. Checked-bag fees may apply to several Southwest fare types. Complimentary bags depend on the fare purchased, Rapid Rewards tier, or eligible credit-card benefits.
How can I check which airlines and routes are available?
Use the official Long Island MacArthur Airport flight-information page and search the airline’s booking calendar for your exact dates. This is important because several ISP routes are seasonal or operate only on selected days.
What other airports can Long Island travelers compare?
The main alternatives are John F. Kennedy International Airport, LaGuardia Airport, and Newark Liberty International Airport. Compare the full fare and ground journey, including traffic, tolls, trains, parking, and travel time.
Sources
- Long Island MacArthur Airport Flight Information — current airline partners and nonstop destinations
- Long Island MacArthur Airport Southwest Airlines Page — current Southwest destinations and assigned-seating update
- Southwest Fare Types and Benefits — seating and baggage benefits by fare
- Long Island MacArthur Airport Parking — parking options and current policies
- Long Island MacArthur Airport Ground Transportation — rental cars, ride-hailing, LIRR, and bus information
- Transportation Security Administration Identification Guide — acceptable airport-checkpoint identification