Cancun to Seattle (CUN-SEA): nonstop upgrade & award space

Delta Air Lines and Alaska Airlines fly nonstop between Cancun (CUN) and Seattle (SEA), roughly 14 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 Delta Air Lines and Alaska Airlines, on every CUN to SEA 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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14
Nonstop flights a week
2,684 mi
Nonstop distance
Free
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Cancun to Seattle flight schedule

Scheduled nonstop departures for CUN to SEA, 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 Cancun (CUN) to Seattle (SEA)
Date Flight Airline Departs CUN Arrives SEA Duration Aircraft
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q
DL 604Delta Air Lines17:1521:006h 45m32Q

Showing all 7 scheduled CUN to SEA 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 CUN to SEA date on the interactive map

Confirmed upgrade & award space on CUN to SEA departures

2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines, segment by segment and date by date. Open the calendar for Cancun to Seattle 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 CUN to SEA 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 CUN to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Cancun to Seattle nonstop

Carriers operating CUN to SEA nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See CUN to SEA on the interactive map →

Frequently asked questions about CUN to SEA

How far is Seattle from Cancun?
CUN to SEA covers about 2,684 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 CUN to SEA?
Delta Air Lines and Alaska Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines.
How many flights a week are there from CUN to SEA?
About 14 nonstop flights a week run between Cancun and Seattle in the current schedule, operated by Delta Air Lines and Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from CUN to SEA depart?
In the next 7 days with service, every scheduled CUN to SEA nonstop leaves at 17:15 local time at Cancun. The schedule table on this page lists each departure by date.
How do I check upgrade or award availability on CUN to SEA?
Open the CUN to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines and Alaska Airlines, 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 CUN to SEA 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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