Cheap Flights from Seattle to Boston
Low fares from $349. Non-stop options in about 5h 39m. Call now and let an expert beat the price you see online.
- Exclusive phone-only fares you won't see online
- Experts help with changes, cancellations & refunds
- No hidden booking fees — pay what you're quoted
- 24/7 US-based travel agents on call
About flights from Seattle to Boston
The Seattle to Boston route covers roughly 2,488 miles (4,004 km), departing from Seattle-Tacoma International Airport (SEA) and arriving at Logan International Airport (BOS). A non-stop journey takes about 5h 39m. Because this is a domestic route, fares swing widely by season, day of week and how far ahead you book — which is exactly where a quick phone call pays off.
Our travel experts hold consolidator and negotiated fare contracts that aren't shown on public booking sites. Call +1 (855) 302-0422 and we'll search live inventory for your exact dates, hold the best fare, and book it for you — 24/7.
Airlines flying SEA → BOS
- American Airlines
- Delta Air Lines
- United Airlines
- JetBlue Airways
When is the cheapest time to fly Seattle to Boston?
Fares on the Seattle–Boston route are usually lowest when you book 3 to 10 weeks ahead and fly mid-week (Tuesday or Wednesday). Prices climb sharply in the final two weeks and around holidays and long weekends. Because airlines release a small number of discounted seats on each flight, the best fare can disappear within hours — that's why a quick call often beats refreshing booking sites for days.
Seattle to Boston: route at a glance
| Departure airport | Seattle-Tacoma International Airport (SEA), Seattle |
|---|---|
| Arrival airport | Logan International Airport (BOS), Boston |
| Distance | 2,488 mi (4,004 km) |
| Typical flight time | ~5h 39m (non-stop) |
| Route type | Domestic |
| Fares from | $349 (call for live pricing) |
How to change or cancel a Seattle–Boston flight
Plans change. If you need to move your dates, switch passengers, or cancel altogether, the rules depend on your fare type and airline. Many tickets allow changes for a fee (or free within 24 hours of booking), and some qualify for a full refund. Rather than navigate each airline's fine print, call us — we'll review your options, waive avoidable fees where possible, and rebook you fast. Learn more in our guide to cancelling a flight and getting a refund and how to change your flight date without paying a fee.
Frequently asked questions
How much is a flight from Seattle to Boston?
Fares from Seattle to Boston start around $349 one-way, but the best last-minute deals change daily. Call +1 (855) 302-0422 to get the lowest live fare for your dates.
How long is the flight from Seattle to Boston?
The distance is about 2,488 miles, so a non-stop flight takes roughly 5h 39m.
Which airlines fly from Seattle to Boston?
Carriers commonly serving this route include American Airlines, Delta Air Lines, United Airlines, JetBlue Airways.
Can I get a cheaper fare by calling?
Yes. Our agents have access to consolidator and discounted fares that are often lower than online prices. Call +1 (855) 302-0422 — it's free and available 24/7.