Seattle to Miami (SEA-MIA): nonstop upgrade & award space

Alaska Airlines, American Airlines, and Delta Air Lines fly nonstop between Seattle (SEA) and Miami (MIA), roughly 19 times a week. Long-haul cabins on a corridor this busy are large but never idle: premium cabin inventory reshuffles around every schedule change, and the best dates go first. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, American Airlines, and Delta Air Lines, on every SEA to MIA departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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19
Nonstop flights a week
2,721 mi
Nonstop distance
Free
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Seattle to Miami flight schedule

Scheduled nonstop departures for SEA to MIA, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to Miami (MIA)
Date Flight Airline Departs SEA Arrives MIA Duration Aircraft
DL 506Delta Air Lines07:5917:076h 8m32Q
AS 305Alaska Airlines, Inc.08:0017:136h 13m73J
AA 1471American Airlines20:2105:105h 49m32Q
DL 506Delta Air Lines07:5917:076h 8m32Q
AS 305Alaska Airlines, Inc.08:1217:176h 5m7M8
DL 506Delta Air Lines07:5917:076h 8m32Q
AS 305Alaska Airlines, Inc.08:1217:176h 5m7M8
AA 1471American Airlines20:5005:405h 50m32Q
DL 506Delta Air Lines07:5917:076h 8m32Q
AS 305Alaska Airlines, Inc.08:1217:176h 5m7M8
AA 1471American Airlines20:5005:405h 50m32Q
AS 305Alaska Airlines, Inc.08:0017:136h 13m7M9
DL 506Delta Air Lines08:0017:096h 9m32Q
AA 1471American Airlines20:5005:405h 50m32Q
AS 305Alaska Airlines, Inc.08:0017:136h 13m7M9
DL 506Delta Air Lines08:2517:326h 7m32Q
AA 1471American Airlines20:5005:405h 50m32Q
AS 305Alaska Airlines, Inc.08:0017:136h 13m7M9
DL 506Delta Air Lines08:0017:096h 9m32Q
AA 1471American Airlines20:5005:405h 50m32Q

Showing all 20 scheduled SEA to MIA departures across the next 7 days with service. 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 has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SEA to MIA date on the interactive map

Confirmed upgrade & award space on SEA to MIA departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines, American 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.

See real availability

Confirmed upgrade and award seats on each SEA to MIA departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are 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. 2LNR tracks confirmed upgrade and award space on each of them.

See SEA to MIA on the interactive map →

Frequently asked questions about SEA to MIA

How far is Miami from Seattle?
SEA to MIA covers about 2,721 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SEA to MIA?
Alaska Airlines, American Airlines, and Delta Air Lines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, American Airlines, and Delta Air Lines.
How many flights a week are there from SEA to MIA?
About 19 nonstop flights a week run between Seattle and Miami in the current schedule, operated by Alaska Airlines, American 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 07:59 and 20:50, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time 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 Alaska Airlines, American 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.

Never miss SEA to MIA upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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