Boston to Seattle (BOS-SEA): Nonstop Upgrade & Award Space
Alaska Airlines, Inc., Delta Air Lines, British Airways, and JetBlue Airways fly nonstop between Boston (BOS) and Seattle (SEA), roughly 75 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every BOS to SEA departure, so you know which flights have space before you book.
Data current as of July 22, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.
Confirmed upgrade & award space on every BOS to SEA departure
2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Boston to Seattle to see which departures have real space, or watch the route and get alerted when space opens.
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.
- Alaska Airlines, Inc.
- Delta Air Lines
- British Airways
- JetBlue Airways
Frequently asked questions about BOS to SEA
How far is Seattle from Boston?
Which airlines fly nonstop from BOS to SEA?
How many flights a week are there from BOS to SEA?
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Never miss BOS to SEA upgrade or award space
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