HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Fort Myers

$74+ Cheap flights from John F Kennedy Intl, NY (JFK) to Fort Myers (RSW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — RSW
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from John F Kennedy Intl to Fort Myers with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from New York John F Kennedy Intl to Fort Myers SW Florida Intl are usually found in October or September, booked 69 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from John F Kennedy Intl to Fort Myers

Cheapest flights from John F Kennedy Intl to Fort Myers
Explore the most affordable flight options available from John F Kennedy Intl to Fort Myers. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 17, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:29 pm
JFK
-
RSW
1 stop18h 47m
Multiple Airlines
Tue 3/177:35 am
RSW
-
JFK
1 stop7h 54m
Multiple Airlines
Deal found 2/17$152
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:29 pm
JFK
-
RSW
1 stop18h 23m
Multiple Airlines
Wed 3/116:00 am
RSW
-
JFK
1 stop9h 29m
Multiple Airlines
Deal found 2/15$157
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:29 pm
JFK
-
RSW
1 stop18h 53m
Multiple Airlines
Tue 3/106:00 am
RSW
-
JFK
1 stop9h 29m
Multiple Airlines
Deal found 2/15$161
This Kiwi.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2510:00 am
JFK
-
RSW
1 stop8h 32m
Frontier
Mon 3/303:43 pm
RSW
-
JFK
1 stop18h 18m
Frontier
Deal found 2/16$162
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1110:00 am
JFK
-
RSW
1 stop8h 15m
Frontier
Mon 3/167:35 pm
RSW
-
JFK
1 stop5h 38m
Frontier
Deal found 2/17$163
This Kiwi.com deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:29 pm
JFK
-
RSW
1 stop18h 47m
Multiple Airlines
Wed 3/117:10 pm
RSW
-
JFK
1 stop6h 03m
Multiple Airlines
Deal found 2/16$164
This SmartFares deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:28 pm
JFK
-
RSW
Nonstop3h 22m
Delta
Sat 3/77:50 pm
RSW
-
JFK
1 stop5h 01m
Delta
Deal found 2/15$173
This Super.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:30 pm
JFK
-
RSW
Nonstop3h 23m
JetBlue
Thu 3/127:09 pm
RSW
-
JFK
Nonstop2h 50m
JetBlue
Deal found 2/17$174
This Super.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/88:29 pm
JFK
-
RSW
Nonstop3h 23m
JetBlue
Thu 3/127:09 pm
RSW
-
JFK
Nonstop2h 50m
JetBlue
Deal found 2/17$175
This Cheapflightsfares deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:23 pm
JFK
-
RSW
Nonstop3h 22m
JetBlue
Wed 4/225:55 pm
RSW
-
JFK
Nonstop2h 58m
JetBlue
Deal found 2/14$176
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:28 pm
JFK
-
RSW
Nonstop3h 22m
Delta
Fri 3/67:59 pm
RSW
-
JFK
Nonstop3h 01m
Delta
Deal found 2/17$177

Find flight deals from John F Kennedy Intl to Fort Myers

Discover tips and strategies to find the most affordable flight options for your journey from John F Kennedy Intl (JFK) to Fort Myers (RSW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(Kiwi.com)

One-way from

$74
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$297
Provider with most accurate pricing for New York John F Kennedy Intl-Fort Myers SW Florida Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York John F Kennedy Intl-Fort Myers SW Florida Intl flights.
Search Deals
From New York John F Kennedy Intl to Fort Myers SW Florida Intl
Search Deals
One-way flight from New York John F Kennedy Intl to Fort Myers SW Florida Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from John F Kennedy Intl to Fort Myers 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, Cheapflights users made 2,558,603 searches. Data last updated February 17, 2026.
Use the filters below to find and compare flights from New York John F Kennedy Intl Airport to Fort Myers that are best for you.

Fly from

John F Kennedy Intl

Fly to

Fort Myers

Route

Depart

Return

Price

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Mon 3/9

7:05 am-10:20 am

Nonstop3h 15m

Fort Myers SW Florida Intl

Tue 3/10

7:27 pm-10:29 pm

Nonstop3h 02m

$177

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Wed 3/4

7:05 am-10:29 am

Nonstop3h 24m

Fort Myers SW Florida Intl

Wed 3/11

7:27 pm-10:29 pm

Nonstop3h 02m

$177

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Wed 3/4

7:05 am-10:29 am

Nonstop3h 24m

Fort Myers SW Florida Intl

Wed 3/4

7:59 pm-11:00 pm

Nonstop3h 01m

$177

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Sun 5/24

5:15 pm-8:37 pm

Nonstop3h 22m

Fort Myers SW Florida Intl

Thu 5/28

6:25 am-9:13 am

Nonstop2h 48m

$182

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Mon 5/11

6:30 am-9:35 am

Nonstop3h 05m

Fort Myers SW Florida Intl

Fri 5/15

5:55 pm-8:53 pm

Nonstop2h 58m

$182

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Tue 3/10

7:05 am-10:20 am

Nonstop3h 15m

Fort Myers SW Florida Intl

Tue 3/17

7:27 pm-10:29 pm

Nonstop3h 02m

$182

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Wed 3/11

7:05 am-10:20 am

Nonstop3h 15m

Fort Myers SW Florida Intl

Fri 3/20

7:27 pm-10:29 pm

Nonstop3h 02m

$182

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Sat 8/1

7:30 pm-10:50 pm

Nonstop3h 20m

Fort Myers SW Florida Intl

Sun 8/9

6:05 am-9:04 am

Nonstop2h 59m

$187

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Sat 4/18

7:15 am-10:33 am

Nonstop3h 18m

Fort Myers SW Florida Intl

Sat 4/25

5:30 am-10:15 am

1 stop4h 45m

$187

New YorkFort Myers

JFK - RSW

JFKRSW

New York John F Kennedy Intl

Sat 5/30

8:00 am-11:20 am

Nonstop3h 20m

Fort Myers SW Florida Intl

Mon 6/1

7:50 pm-1:06 am

1 stop5h 16m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 20 results
1
2

Compare providers for flights from John F Kennedy Intl to Fort Myers

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from John F Kennedy Intl to Fort Myers in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
BudgetAirPrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New York John F Kennedy Intl Airport-Fort Myers flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York John F Kennedy Intl Airport-Fort Myers flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York John F Kennedy Intl Airport-Fort Myers flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New York John F Kennedy Intl Airport-Fort Myers flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York John F Kennedy Intl Airport-Fort Myers flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from John F Kennedy Intl to Fort Myers

Have a flexible travel schedule? Discover the best time to fly to Fort Myers from John F Kennedy Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New York John F Kennedy Intl Airport to Fort Myers

How far ahead should I book a flight from New York John F Kennedy Intl Airport to Fort Myers?

Use this chart to determine the optimal time to book a round-trip flight from John F Kennedy Intl to Fort Myers. Price data was last updated on February 13, 2026.

The best time to book flights from New York John F Kennedy Intl Airport to Fort Myers is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from New York John F Kennedy Intl Airport to Fort Myers?

Currently, March is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Fort Myers (average of $68). Flying from New York John F Kennedy Intl Airport to Fort Myers in September is currently the most expensive (average of $117). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from JFK to RSW?

Find hourly flight availability from John F Kennedy Intl to Fort Myers. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 17, 2026.

It’s optimal to fly from New York John F Kennedy Intl Airport to Fort Myers in the afternoon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from New York John F Kennedy Intl Airport to Fort Myers?

Use this chart to determine the cheapest time to fly round-trip from John F Kennedy Intl to Fort Myers. Price data was last updated on February 17, 2026.

Travelers seeking maximum savings on their New York John F Kennedy Intl Airport to Fort Myers flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Fort Myers

Get insights into the airlines that provide service to Fort Myers. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fort Myers. Reviews last updated February 17, 2026.
Read reviews from past customers who have flown Delta, American Airlines, and JetBlue from New York John F Kennedy Intl Airport to Fort Myers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,208 reviews

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
7.9
Good
8,208 reviews
Delta
7.9
Good
8,208 reviews

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.2
Good
11,304 reviews
Delta
7.9
Good
8,208 reviews

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
JetBlue
7.2
Good
2,900 reviews
Delta
7.9
Good
8,208 reviews

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.2

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Related info for your journey

Find useful and relevant information for your journey from John F Kennedy Intl to Fort Myers. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Fort Myers from New York John F Kennedy Intl?

    Located just 10.0 mi from the city center, Fort Myers SW Florida Intl is the airport most travelers will use when flying to Fort Myers from New York John F Kennedy Intl. Booking flights from New York John F Kennedy Intl to SW Florida Intl (RSW) should be relatively easy as there are 20 daily inbound flights from New York John F Kennedy Intl from 3 different airlines.

  • How long is the flight from New York John F Kennedy Intl Airport to Fort Myers?

    Departing from New York John F Kennedy Intl Airport to Fort Myers will take you 3h 15m. There are 1075 mi between New York John F Kennedy Intl Airport and Fort Myers. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from New York John F Kennedy Intl Airport to Fort Myers round-trip?

    Currently priced at $78, Delta will fly you from New York John F Kennedy Intl Airport to Fort Myers and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and American Airlines - these airlines can fly you to your destination from $98 and $180, respectively. Delta is priced at 66% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from New York John F Kennedy Intl Airport to Fort Myers one-way?

    $57 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Delta, with prices starting from $68 and $73, respectively.

  • What are the most reliable airlines from New York John F Kennedy Intl Airport to Fort Myers?

    The top 3 most reliable airlines when flying from New York John F Kennedy Intl Airport to Fort Myers are LATAM Airlines (87%), Korean Air (84%) and China Eastern (82%).

  • What are the cheapest flights from New York John F Kennedy Intl Airport to Fort Myers?

    On average you can expect to pay $305 for a flight from New York John F Kennedy Intl Airport to Fort Myers. The cheapest flight overall is $64 while the most popular route, (New York John F Kennedy Intl - Fort Myers SW Florida Intl) is currently priced at $174.

  • Can I find deals for flights from John F Kennedy Intl to Fort Myers that include hotel bookings?

    Yes. In addition to deals on John F Kennedy Intl to Fort Myers flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from John F Kennedy Intl to Fort Myers?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from John F Kennedy Intl to Fort Myers.

  • Can I find deals for business class flights from John F Kennedy Intl to Fort Myers?

    Yes. Cheapflights offers flight deals from John F Kennedy Intl to Fort Myers by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New York John F Kennedy Intl Airport to Fort Myers?

    Currently, March is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Fort Myers (average of $68). Flying from New York John F Kennedy Intl Airport to Fort Myers in September is currently the most expensive (average of $117). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Fort Myers?

Book flights to Fort Myers if you plan to visit one of these locations
Sanibel
North Fort Myers
Estero
Lehigh Acres

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for John F Kennedy Intl to Fort Myers

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Fort Lauderdale flights
Newark to Fort Lauderdale flights
Newark to Miami flights
John F Kennedy Intl to Miami flights
LaGuardia to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Newark to West Palm Beach flights
John F Kennedy Intl to West Palm Beach flights
LaGuardia to Orlando flights
Newark to Orlando flights
Newark to Tampa flights
John F Kennedy Intl to Tampa flights
LaGuardia to West Palm Beach flights
LaGuardia to Tampa flights
Newark to Fort Myers flights
John F Kennedy Intl to Sarasota flights
Newark to Sarasota flights
John F Kennedy Intl to Jacksonville flights
LaGuardia to Fort Myers flights
LaGuardia to Sarasota flights
Stewart to Fort Lauderdale flights
Newark to Jacksonville flights
Newark to Key West flights
LaGuardia to Jacksonville flights
Stewart to Orlando flights
John F Kennedy Intl to Key West flights
LaGuardia to Key West flights
Stewart to St Petersburg flights
Newark to Daytona Beach flights
John F Kennedy Intl to Daytona Beach flights
LaGuardia to Panama City flights
John F Kennedy Intl to Panama City flights
LaGuardia to Pensacola flights
Newark to Melbourne flights
Newark to Panama City flights
Stewart to Tampa flights
Newark to Pensacola flights
Newark to St Petersburg flights
LaGuardia to Daytona Beach flights
John F Kennedy Intl to Valparaiso flights
John F Kennedy Intl to Pensacola flights
LaGuardia to Melbourne flights
John F Kennedy Intl to Melbourne flights
Newark to Gainesville flights
Newark to Tallahassee flights
LaGuardia to Valparaiso flights
John F Kennedy Intl to Tallahassee flights
LaGuardia to Tallahassee flights

Top 3 airlines flying from John F Kennedy Intl to Fort Myers

Discover the top 3 airlines that operate flights from John F Kennedy Intl to Fort Myers. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$78Average$198FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$98Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$180Average$374FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.