Direct flights from Seattle to Boston SEA → BOS

Alaska Airlines, Delta Air Lines and JetBlue Airways fly nonstop from Seattle (SEA) to Boston (BOS), several times daily. The flight takes about 5h 38m and covers 2,489 miles (4,006 km). Arrivals run on time 80.8% at SEA and 75.4% at BOS — BTS data for the last three months, counting arrivals within 15 minutes of schedule. Schedule data from 16 August 2026.

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Alaska Airlines AS JetBlue Airways B6 Delta Air Lines DL

Departure Schedule typical week

Typical weekly schedule · 79 flights per week (~11 per day) · Updated 14d ago

Alaska Airlines
32 flights per week (~5 per day)
Arrives Terminal B
Sun, Mon, Thu, Fri, Sat
06:03 → 14:23
Daily
08:23 → 16:53 10:13 → 18:41 15:36 → 23:59
Sun, Mon, Tue, Wed, Thu, Fri
23:18 → 07:40
JetBlue Airways
14 flights per week (~2 per day)
Arrives Terminal C
Daily
11:40 → 20:09 23:45 → 08:04
Delta Air Lines
33 flights per week (~5 per day)
Arrives Terminal AArrives Terminal E
Daily
07:29 → 16:00 07:38 → 16:10 23:13 → 07:35
Sun, Mon, Tue, Wed, Thu, Fri
11:15 → 19:43 15:59 → 00:17

More nonstops from Seattle

SEA → LAX Los Angeles 7 airlines SEA → PHX Phoenix 7 airlines SEA → DEN Denver 6 airlines SEA → LAS Las Vegas 5 airlines SEA → ONT Ontario 4 airlines SEA → ORD Chicago 4 airlines SEA → PDX Portland 4 airlines SEA → SAN San Diego 4 airlines

Frequently asked questions

Is there a direct flight from Seattle to Boston?

Yes, Alaska Airlines, Delta Air Lines and 1 more airline operate nonstop flights from Seattle (SEA) to Boston (BOS).

Which airlines fly direct from Seattle to Boston?

Alaska Airlines, Delta Air Lines, JetBlue Airways operate nonstop flights from Seattle to Boston.

How long is the flight from Seattle to Boston?

The nonstop flight from Seattle to Boston takes ~5h 38m (approximately 4006 km).

How often do direct flights operate from Seattle to Boston?

Nonstop flights from Seattle to Boston operate multiple daily — 79 flights per week (~11 per day).

What is the on-time performance for flights from Seattle to Boston?

Arrivals run on time 80.8% at SEA and 75.4% at BOS — BTS data for the last three months, counting arrivals within 15 minutes of schedule.

What days of the week are there direct flights from Seattle to Boston?

Direct flights from Seattle to Boston operate every day of the week. Alaska Airlines flies daily, JetBlue Airways flies daily, and Delta Air Lines flies daily.

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SEA All direct flights from Seattle BOS All direct flights from Boston BOS → SEA Return: Boston to Seattle

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