Seattle (SEA) to Miami (MIA) flights: who flies it

Seattle to Miami flight schedule

Scheduled nonstop departures for SEA to MIA starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Seattle (SEA) to Miami (MIA)
Date	Flight	Airline	Departs SEA	Arrives MIA	Duration	Aircraft
Fri, Oct 23	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Fri, Oct 23	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737 MAX 9
Fri, Oct 23	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Sat, Oct 24	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Sat, Oct 24	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737 MAX 9
Sat, Oct 24	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Sun, Oct 25	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Sun, Oct 25	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737 MAX 9
Sun, Oct 25	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Mon, Oct 26	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Mon, Oct 26	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737 MAX 9
Mon, Oct 26	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Tue, Oct 27	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Tue, Oct 27	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737 MAX 9
Tue, Oct 27	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Wed, Oct 28	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Wed, Oct 28	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737-900
Wed, Oct 28	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family
Thu, Oct 29	DL 506	Delta Air Lines	08:05	17:03	5h 58m	Airbus A321neo family
Thu, Oct 29	AS 305	Alaska Airlines, Inc.	08:08	17:15	6h 7m	Boeing 737-900
Thu, Oct 29	AA 1471	American Airlines	20:39	05:22	5h 43m	Airbus A321neo family

Showing all 21 scheduled SEA to MIA departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEA to MIA date on the interactive map

Aircraft on the Seattle to Miami nonstop

In the schedule table on this page, Delta Air Lines flies the Airbus A321neo family. Alaska Airlines flies the Boeing 737 MAX 9 and the Boeing 737-900. American Airlines flies the Airbus A321neo family. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on SEA to MIA departures

2LNR tracks confirmed upgrade and award space on American Airlines, Alaska Airlines, and Delta Air Lines, segment by segment and date by date. Open the calendar for Seattle to Miami to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

In the 7 days to October 19, 2026, 2LNR checked award space on Seattle to Miami departures from October 19 to November 1. American Airlines had space open on 11 of 14 dates checked, Alaska Airlines on 0 of 14 and Delta Air Lines on 14 of 14.

See real availability

Confirmed upgrade or award seats by date on the SEA to MIA departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking.

Plan on the map

See SEA to MIA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Miami nonstop

Carriers operating SEA to MIA nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See SEA to MIA on the interactive map →

Frequently asked questions about SEA to MIA

How long is the flight from Seattle (SEA) to Miami (MIA)?

Scheduled flight times from Seattle (SEA) to Miami (MIA) run from 5h 43m to 6h 7m across the departures in the schedule table on this page. The nonstop covers about 2,721 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from SEA to MIA?

American Airlines, Alaska Airlines, and Delta Air Lines fly SEA to MIA nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines, Alaska Airlines, and Delta Air Lines.

How many flights a week are there from SEA to MIA?

About 21 nonstop flights a week run between Seattle (SEA) and Miami (MIA) in the current schedule, operated by American Airlines, Alaska Airlines, and Delta Air Lines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from SEA to MIA depart?

Scheduled SEA to MIA nonstops in the next 7 days with service leave between 08:05 and 20:39, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Which flights operate SEA to MIA nonstop?

In the schedule table on this page, SEA to MIA nonstops fly as AA 1471 on American Airlines, AS 305 on Alaska Airlines, and DL 506 on Delta Air Lines. The table lists each departure by date with its times and aircraft.

How do I check upgrade or award availability on SEA to MIA?

Open the SEA to MIA route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, Alaska Airlines, and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.