Cheap Flights from Boston to Seattle (BOS - SEA) | Best Price Finder

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Flights deals from Boston to Seattle (BOS - SEA)

Flights from Boston to Seattle (BOS - SEA)

Best Deal

Hawaiian Airlines

31 August (One way)

Only 6 seats left

$171.20

Cheap Flights from Boston to Seattle

Flights between Boston and Seattle vary depending on seasonality, demand, and airline competition. Our data-driven system analyzes millions of fares to help you book at the right time.

Find the best deals from Boston to Seattle. Prices start from $171.2.

Cheapest date: 2026-08-31

Best deal: $171.2 on 2026-08-31

Flight Price Trends

Prediction: Prices are stable ➖

Insights

Flight prices from Boston to Seattle are currently .

Booking early can help you save more. Based on recent trends, mid-week flights tend to be cheaper than weekends.

Cheapest Days to Fly

Best Weekdays

When is the cheapest time to fly from Boston to Seattle ?

The lowest fares are typically found in August 2026, with the best deals around MONDAY, 31 Aug. Flying on MONDAYs can help you save more, with prices starting from $171.20.

Smart Tip: Based on recent data, the cheapest flights from BOS to SEA are typically available on Monday, 31 Aug.

Best tips to get cheap flights from Boston to Seattle

Choose the cheapest days: Flights on Mondays are currently the most affordable for Boston to Seattle, based on recent trends.
Book in advance: Booking 3–6 weeks in advance usually gives the best prices for this route.
Avoid peak travel seasons: Prices tend to be highest in August 2026 . Try to travel during other months for better deals.
Compare multiple airlines: Airlines like HA are currently offering lower fares on this route. Compare options to get the best deal.
Be flexible with dates: Even shifting your travel by 1–2 days can significantly reduce ticket prices.
Book early morning or late-night flights: These flights are often cheaper than peak-time departures.
Set price alerts: Track fare changes and book when prices drop for BOS to SEA flights.

Why book with us?

We analyze millions of flight prices daily to help you find the cheapest flights from Boston to Seattle . Our smart algorithms identify the best time to book, helping you save more on every trip.

Frequently asked questions

Best deal: $171.2 on AUGUST 31, 2026

MONDAY has the lowest fares starting at $171.2

Average fare is around $171.2

Airline HA offers fares starting at $171.2

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