Boston to Seattle (BOS-SEA): nonstop upgrade & award space

Alaska Airlines, Delta Air Lines, and JetBlue Airways fly nonstop between Boston (BOS) and Seattle (SEA), roughly 80 times a week. Alaska Airlines carries most of this long-haul schedule, so one carrier's release pattern decides when premium space appears, and it is rarely all at once. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, on every BOS 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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80
Nonstop flights a week
2,489 mi
Nonstop distance
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Boston to Seattle flight schedule

Scheduled nonstop departures for BOS 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 Boston (BOS) to Seattle (SEA)
Date Flight Airline Departs BOS Arrives SEA Duration Aircraft
B6 397JetBlue Airways07:0910:306h 21m321
AS 459Alaska Airlines, Inc.07:1210:256h 13m73J
DL 384Delta Air Lines07:5511:136h 18m32Q
AS 338Alaska Airlines, Inc.09:0012:236h 23m73J
AS 215Alaska Airlines, Inc.10:0313:156h 12m73J
DL 332Delta Air Lines11:4414:556h 11m32Q
DL 2889Delta Air Lines15:3019:006h 30m32Q
AS 289Alaska Airlines, Inc.16:4820:016h 13m7M9
AS 304Alaska Airlines, Inc.17:5621:266h 30m73J
B6 197JetBlue Airways19:3022:536h 23m320
DL 324Delta Air Lines19:4523:006h 15m32Q
AS 306Alaska Airlines, Inc.19:5923:126h 13m73J
AS 459Alaska Airlines, Inc.07:1210:256h 13m7M9
DL 384Delta Air Lines07:5511:136h 18m32Q
AS 338Alaska Airlines, Inc.09:0012:236h 23m73J
AS 215Alaska Airlines, Inc.10:0313:156h 12m7M9
DL 332Delta Air Lines11:4414:556h 11m32Q
DL 2889Delta Air Lines15:3019:006h 30m32Q
AS 289Alaska Airlines, Inc.16:4820:016h 13m7M9
AS 304Alaska Airlines, Inc.17:5621:266h 30m73J
B6 397JetBlue Airways19:2022:376h 17m321
DL 324Delta Air Lines19:4523:006h 15m32Q
AS 306Alaska Airlines, Inc.19:5923:126h 13m73J
AS 459Alaska Airlines, Inc.07:1210:256h 13m7M9
DL 384Delta Air Lines07:5511:136h 18m32Q
AS 338Alaska Airlines, Inc.09:0012:236h 23m73J
AS 215Alaska Airlines, Inc.10:0313:156h 12m7M9
DL 332Delta Air Lines11:4414:556h 11m32Q
AS 1506Alaska Airlines, Inc.15:2618:456h 19m7M9
DL 2889Delta Air Lines15:3019:006h 30m32Q
AS 289Alaska Airlines, Inc.16:4820:016h 13m7M9
AS 304Alaska Airlines, Inc.17:5621:266h 30m73J
B6 397JetBlue Airways19:2022:376h 17m321
DL 324Delta Air Lines19:4523:006h 15m32Q
AS 306Alaska Airlines, Inc.19:5923:126h 13m7M9
AS 459Alaska Airlines, Inc.07:1210:256h 13m7M9
DL 384Delta Air Lines07:5511:136h 18m32Q
AS 338Alaska Airlines, Inc.09:0012:236h 23m73J
AS 215Alaska Airlines, Inc.10:0313:156h 12m7M9
DL 332Delta Air Lines11:4414:556h 11m32Q

Showing the first 40 of 81 scheduled BOS to SEA departures across the next 7 days with service. Every remaining date is 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 BOS to SEA date on the interactive map

Confirmed upgrade & award space on BOS to SEA departures

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

Airlines flying Boston to Seattle nonstop

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

See BOS to SEA on the interactive map →

Frequently asked questions about BOS to SEA

How far is Seattle from Boston?
BOS to SEA covers about 2,489 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 BOS to SEA?
Alaska Airlines, Delta Air Lines, and JetBlue Airways fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, and award seats on JetBlue Airways.
How many flights a week are there from BOS to SEA?
About 80 nonstop flights a week run between Boston and Seattle in the current schedule, operated by Alaska Airlines, Delta Air Lines, and JetBlue Airways. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from BOS to SEA depart?
Scheduled BOS to SEA nonstops in the next 7 days with service leave between 07:09 and 19:59, local time at Boston. 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 BOS to SEA?
Open the BOS to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on 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.

Never miss BOS 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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