Possible delays for WN 4840 (SAV→HOU, MDW→PDX, MCO→ISP) as of 6:51 PM ET. It arrived on time 50.6% of the time in June-August 2026. When it was late, the average delay was 1h 8m. 1.2% of flights were cancelled. MCO has delays (RWY:Disabled Aircraft, 16 minutes to 30 minutes (increasing)).
Likely delayed
Leg 3 of 3 (MCO → ISP): Likely delayed: MCO has delays (RWY:Disabled Aircraft, 16 minutes to 30 minutes (increasing)). Scheduled to leave at 8:55 PM local time. This flight number flew about 5 days a week in June-August 2026, so it may not operate today.
Cancellation risk: High 1.2% of its flights were cancelled in June-August 2026; MCO has major delays; rough weather at HOU.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Southwest for official times. Live position: adsb.lol (open data, ODbL).
Book a backup seat SAV → ISPThis flight is cancelled often; a refundable backup costs little
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SAV → HOU Savannah, GA to Houston, TX | 3:00 PM → 4:25 PM | 75% |
| MDW → PDX Chicago, IL to Portland, OR | 8:50 PM → 11:05 PM | 12% |
| MCO → ISP Orlando, FL to Islip, NY | 8:55 PM → 11:40 PM | 59% |
Local times. Schedules change; check your booking.
How reliable is WN 4840?
| Arrived on time (within 15 min) | 50.6% |
| Average delay when late | 68 min |
| Cancelled | 1.2% |
| Diverted | 0% |
| Flights tracked | 80 |
Best and worst days to fly WN 4840
WN 4840 was most reliable on Sundays (85% on time) and least reliable on Wednesdays (25%).
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| Tuesday | |
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Southwest to the Department of Transportation.
Other flights MCO → ISP
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Southwest app.
Southwest delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is WN 4840 delayed today?
MCO has delays (RWY:Disabled Aircraft, 16 minutes to 30 minutes (increasing)). Checked 6:51 PM ET. For this flight's gate and exact status, check the Southwest app.
Is WN 4840 usually on time?
WN 4840 arrived within 15 minutes of schedule 50.6% of the time in June-August 2026, with an average delay of 68 minutes when late.
How often is WN 4840 cancelled?
1.2% of WN 4840 flights were cancelled in June-August 2026.