How many flights from Boston to Seattle are non-stop?

Historically, approximately 56.9% of flights from Boston to Seattle have been non-stop. This indicates that a majority of travelers on this route can typically find direct options. For flights that do include stopovers, the median number of connections observed has been 2. This information, gathered over a 90-day trailing period, can help travelers plan their journey based on their preference for direct or connecting flights.

How long does it take to fly from Boston to Seattle?

A direct flight from Boston to Seattle typically takes approximately 6 hours and 22 minutes. This is based on a median direct flight time of 382 minutes. For flights that include one stop, the median travel time increases to about 10 hours and 13 minutes, or 613 minutes. The total distance covered on this route is approximately 4006 kilometers.

How often do Boston to Seattle flight prices drop?

Historically, flight prices for the Boston to Seattle route have shown frequent drops. This suggests that travelers monitoring this route may often find opportunities for price reductions. The frequency of these price changes has been observed over a 30-day trailing period, indicating a dynamic pricing environment for this particular route.

Flights From Boston

To Seattle

Cheap Flights from Boston to Seattle

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Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to Seattle

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from Boston to Seattle

Explore current cheapest deals departing from Boston to Seattle

2026-09-15 – 2026-09-29
BOS - Seattle
73% AI deal score
$265
$272
Round trip
2026-09-16 – 2026-09-23
BOS - Seattle
76% AI deal score
$293
$272
Round trip
2026-10-07 – 2026-10-13
BOS - Seattle
76% AI deal score
$292
$272
Round trip
2026-10-06 – 2026-10-14
BOS - Seattle
75% AI deal score
$280
$272
Round trip
2026-10-07 – 2026-10-14
BOS - Seattle
75% AI deal score
$292
$281
Round trip
2026-09-12 – 2026-09-15
BOS - Seattle
76% AI deal score
$307
$282
Round trip
2026-09-05 – 2026-09-09
BOS - Seattle
76% AI deal score
$307
$282
Round trip
2026-09-26 – 2026-09-30
BOS - Seattle
76% AI deal score
$309
$283
Round trip
2026-09-01 – 2026-09-05
BOS - Seattle
73% AI deal score
$308
$291
Round trip
2026-09-22 – 2026-09-26
BOS - Seattle
76% AI deal score
$310
$291
Round trip

Boston to Seattle: Overview

Insights for flights from Boston to Seattle

A typical journey from Boston to Seattle, including connections, takes about 6h 22m. This route is classified as long-haul, covering a distance of 4006 km. Given that a meaningful share of itineraries are non-stop, the overall median journey time reflects both direct and connecting options.

For travelers seeking cheap flights from Boston to Seattle, fares typically range from $315–$547, with a median of $387. Right now, current fares are above the typical level for this route. Only 1% of recent fares were classified as a good price, indicating that finding exceptional deals can be challenging.

The cheapest time to fly from Boston to Seattle is often in January, with a median fare of $246. Other cost-effective months include May, where the median fare is $297, and March, with a median of $303. These months present better value compared to the overall median fare for the route.

A meaningful share of itineraries on this route are non-stop, with 56.9% of recent fares being direct flights from Boston to Seattle. For itineraries that do include connections, the typical number of stopovers is 2. This mix of direct and connecting options provides flexibility for travelers, though connecting flights will naturally extend the overall journey time.

How much is a round trip from Boston to Seattle

Regular price: $232 - $413

Prices for flights from Boston to Seattle are currently within the regular range.

The regular price range for flights from Boston to Seattle is between $232 and $413. The current lowest deal is $272 with JetBlue Airways for travel from Sep 15-Sep 29.

now $272

Low $232

High $413

The cheapest time to fly from Boston to Seattle

The cheapest month to fly from Boston to Seattle is December, with a median price of $199. The most expensive month is April, with a median price of $992. Generally, prices are lower from January to December.

December

Cheapest

Flights from $199

April

Most Expensive

Flights from $992

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to Seattle

Alaska Airlines, Inc.

Last-minute flights going from Boston to Seattle

Mon, Jul 27

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

Alaska Airlines, Inc.

$447

$418

One-way

Tue, Aug 4

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

Alaska Airlines, Inc.

$342

$336

One-way

Tue, Aug 18

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

United Airlines

$309

$292

One-way

Tue, Aug 18

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

American Airlines

$323

$302

One-way

Wed, Aug 19

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

$324

$293

One-way

Wed, Aug 19

⌛ Last-Minute

BOS - Seattle

Boston (BOS) - Seattle (SEA)

Alaska Airlines, Inc.

$344

$367

One-way

Biggest price drops on these dates for flights from Boston to Seattle

6 nights

Aug 22 - Aug 28

$520 → $364

30%

7 nights

Sep 12 - Sep 19

$473 → $344

27%

6 nights

Aug 20 - Aug 26

$520 → $440

15%

3 nights

Nov 12 - Nov 15

$383 → $330

14%

Popular Airports to fly from Boston to Seattle

Boston - Seattle route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Boston to Seattle are above the typical level at $272.

📅 Best time to fly

December is historically the cheapest month

Historically, December is the cheapest month to fly from Boston to Seattle, with a median price of $199.

⏱️ Flight duration

Direct flights take 6h 22m

Direct flights from Boston to Seattle typically take 6 hours and 22 minutes.

✈️ Airlines & availability

56.9% of recent flights are direct

Historically, 56.9% of flights from Boston to Seattle are direct, with connecting flights having 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights

Alaska Airlines, Inc. provides direct flights on this route, with 1 direct deal recently found.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from Boston to Seattle are frequent, appearing within a 30-day window.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Logan International Airport is a convenient option for flights from Boston to Seattle.

📍 ~4 km from Boston (reachable by car, bus, or subway)

💸 Flights from ~$222

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International is a key arrival airport for flights from Boston, offering many connections.

📍 ~18 km from Seattle (reachable by car)

💸 Flights from ~$222

Airports nearby Seattle used as alternative

Paine Field Everett (PAE)

Paine Field Everett is a practical alternative for travelers in North Seattle or Snohomish County.

📍 ~40 km from Seattle (reachable by car)

💸 Flights from ~$335

Business & First Class Flight Deals to Seattle

86% AI deal score

$1,573

$1,180

Save $393

Frequently Asked Questions About Flights to Seattle

Historically, the optimal booking window for flights from Boston to Seattle is typically between 28 and 59 days prior to departure. During this period, the average price for a ticket has been observed at approximately $363. Prices tend to be significantly higher for bookings made closer to the travel date, with flights purchased 0-6 days out averaging around $962. Conversely, booking more than 60 days in advance also shows a higher average price of $480, suggesting that the sweet spot for savings is within the 28-59 day window.

Across the trailing quarter, a good price for a flight from Boston to Seattle is considered to be $315 or less. This threshold represents a price point at which 25% of all observed fares were found to be at or below. The median price for this route over the same period was $387, while prices in the higher range could reach up to $547. Aiming for a fare of $315 or lower typically indicates a favorable deal.

Historically, January has been the most affordable month to fly from Boston to Seattle, with a median price of $246. May also offers competitive pricing, with a median fare of $297. March, while also one of the cheaper months, had a slightly higher median price of $303. The annual median price for this route is $387, indicating that these months offer significant savings compared to the yearly average.

Boston to Seattle: Overview

Insights for flights from Boston to Seattle

How much is a round trip from Boston to Seattle

Regular price: $232 - $413

Prices for flights from Boston to Seattle are currently within the regular range.

The regular price range for flights from Boston to Seattle is between $232 and $413. The current lowest deal is $272 with JetBlue Airways for travel from Sep 15-Sep 29.

now $272

Low $232

High $413

The cheapest time to fly from Boston to Seattle

December

Cheapest

Flights from $199

April

Most Expensive

Flights from $992

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec