Direct flights from Boston to Seattle BOS → SEA

Alaska Airlines, Delta Air Lines and JetBlue Airways fly nonstop from Boston (BOS) to Seattle (SEA), several times daily. The flight takes about 5h 38m and covers 2,489 miles (4,005 km). Round-trip fares typically run around $417. Arrivals run on time 75.4% at BOS and 80.8% at SEA — BTS data for the last three months, counting arrivals within 15 minutes of schedule. Fares last checked 13 August 2026.

60-day flexibility overview based on 2 recent fares across the next 60 days

Cheapest
$407
Typical
$417
Most expensive
$427

Prices last updated 17 days ago. Fares change frequently — check the airline for current pricing.

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Alaska Airlines AS JetBlue Airways B6 Delta Air Lines DL

Departure Schedule typical week

Typical weekly schedule · 78 flights per week (~11 per day) · Updated 87d ago

Alaska Airlines
42 flights per week (~6 per day)
Daily
07:20 09:00 09:01 16:33 16:48 19:11
JetBlue Airways
7 flights per week
Daily
07:00
Delta Air Lines
29 flights per week (~4 per day)
Daily
07:48 11:55 19:30
Sun, Mon, Tue, Wed, Thu, Fri
15:55
Wed, Sat
18:45

More nonstops from Boston

BOS → MIA Miami 6 airlines BOS → ORD Chicago 6 airlines BOS → DEN Denver 5 airlines BOS → LHR London 5 airlines BOS → MCO Orlando 5 airlines BOS → DFW Dallas-Fort Worth 4 airlines BOS → LAX Los Angeles 4 airlines BOS → RDU Raleigh/Durham 4 airlines

Frequently asked questions

Is there a direct flight from Boston to Seattle?

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

Which airlines fly direct from Boston to Seattle?

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

How long is the flight from Boston to Seattle?

The nonstop flight from Boston to Seattle takes ~5h 38m (approximately 4005 km).

How often do direct flights operate from Boston to Seattle?

Nonstop flights from Boston to Seattle operate multiple daily — 78 flights per week (~11 per day).

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

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

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

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

How much is a round-trip flight from Boston to Seattle?

Round-trip flights from Boston (BOS) to Seattle (SEA) start at $407, with a typical fare around $417. Based on 2 recent fare combinations.

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

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