The Seattle–Boston route
Seattle to Boston is a coast-to-coast domestic pairing: about 2,489 miles between SEA and BOS. Nonstop SEA–BOS is often on the schedule, about 5.5 hours airborne over 2,489 miles. Red-eyes and Saturday-night stays change the total more than the map distance.
For SEA–BOS we show about $149 on the low end and around $255 as a more typical one-way economy total, USD, last reviewed August 2026. A $149 one-way is a sale-shaped guide, not a fare you can screenshot and demand. Taxes, bags, and seats change what you pay on the seller site.
Search SEA to BOS on Azurovia, compare airline-direct and travel-site totals on the same flights, then finish with the seller. We do not ticket. Keep their confirmation for changes.
Distance and time SEA–BOS
Great-circle distance SEA–BOS is about 2,489 miles. Block time on a nonstop is typically near 5.5 hours; wind, routing, and which runway you use still move the clock. Connections on the same city pair add layover time on top of that flying.
Boston is about 3 hours ahead of Seattle on standard time (America/Los_Angeles vs America/New_York). Arrival clocks on BOS are local. That matters more on this pair than on a same-zone hop.
When SEA–BOS has a nonstop, that is usually the cleanest product. One-stop options still appear — they are worth opening only if the USD total is materially lower after you count the extra ground time.
Airports for Seattle to Boston
Both ends are in the United States: Seattle-Tacoma International (SEA) to Logan International (BOS). This is not an international itinerary, so the usual domestic bag and ID rules apply at the seller. Alternate metro airports can still beat this pair on price.
SEA is the only origin code we list in this metro. BOS is the arrival code we treat as primary for Boston. A cheaper nearby airport only wins if the transfer still fits your plan. Search with “include nearby airports” when you want those codes in one results list.
Airport pages: SEA Seattle-Tacoma International · BOS Logan International
City hubs: Flights from Seattle · Flights to Boston
Bags on SEA–BOS
US domestic Seattle–Boston inventory often includes basic economy. Cabin and checked bags may be extra — the result cards say so when we have that fact. A cheaper headline fare can lose once you add a carry-on.
Airlines often shown
JetBlue is among the names that commonly appear on SEA–BOS, alongside Southwest, Spirit, Frontier. That is who often operates or sells this city pair in our catalog, not a daily guarantee. Live search is the inventory that exists for your dates.
When people fly
On Seattle–Boston, demand is often softer in Jan and Feb, with Sep and Oct also worth checking. US holidays still reprice this pair. Move a day on the results strip before you assume the first date you typed is the cheapest.
Save this route
We’ll email you if live fares on this city pair drop. Search with dates for a specific trip.
Questions about this city pair
How long is the flight from Seattle to Boston?
Nonstop SEA–BOS is typically about 5.5 hours over roughly 2,489 miles. Connections take longer; compare total trip time on the results page.
When are Seattle to Boston fares often lower?
Demand is usually softer in Jan and Feb on this route, but live prices move daily. Search a few nearby dates rather than assuming a season is always cheapest.
Which airlines fly Seattle to Boston?
Sellers commonly show JetBlue, Southwest, Spirit, Frontier on this city pair. The set on any given day depends on schedule and which travel sites return a fare.
What do Seattle–Boston tickets usually cost?
Guide one-way economy totals cluster around $255, with sales near $149, in USD. Those are not a quote — live search is the price that matters.
Is SEA–BOS the only airport pair for this trip?
This guide uses SEA and BOS as the primary codes. If a seller offers another airport, it will show on live results when you include nearby airports.
Do I book Seattle–Boston with Azurovia?
No. Azurovia is a US metasearch. You compare airline and travel-site totals here, then complete the ticket with the seller you choose.