What percentage of Seattle to Boston flights are direct?

In the trailing 90 days, approximately 47.5% of flights from Seattle to Boston were direct. For flights that include connections, travelers typically experience a median of 2 stopovers. This indicates that while direct options are available, a significant portion of flights on this route involve at least one stop.

What's the flight time from Seattle to Boston?

A direct flight from Seattle to Boston typically takes around 5 hours and 25 minutes, covering a distance of 4006 kilometers. For flights with one stop, the median travel time increases to approximately 9 hours and 31 minutes. This difference in duration highlights the efficiency of direct routes compared to those with connections.

How often do cheap flights from Seattle to Boston come up?

Cheap flights from Seattle to Boston are classified as frequent. This suggests that travelers have regular opportunities to find favorable prices for this route. The frequency is based on pricing trends observed over a 30-day period.

Flights From Seattle

To Boston

Cheap Flights from Seattle to Boston

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Deals from

Seattle

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

Prices updated 6 days ago

406 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Aug 2, 2026.)

Today’s best flight deals from Seattle to Boston

Explore current cheapest deals departing from Seattle to Boston

2026-08-25 – 2026-08-27
SEA - Boston
86% AI deal score
$435
$259
Round trip
2026-09-25 – 2026-09-29
SEA - Boston
72% AI deal score
$246
$276
Round trip
2026-10-01 – 2026-10-04
SEA - Boston
73% AI deal score
$264
$276
Round trip
2026-10-01 – 2026-10-15
SEA - Boston
71% AI deal score
$232
$276
Round trip
2026-09-22 – 2026-09-29
SEA - Boston
73% AI deal score
$282
$284
Round trip
2026-09-14 – 2026-09-21
SEA - Boston
72% AI deal score
$234
$284
Round trip
2026-10-14 – 2026-10-17
SEA - Boston
76% AI deal score
$310
$284
Round trip
2026-09-25 – 2026-09-28
SEA - Boston
72% AI deal score
$246
$288
Round trip
2026-09-23 – 2026-09-28
SEA - Boston
72% AI deal score
$242
$288
Round trip
2026-09-23 – 2026-09-30
SEA - Boston
71% AI deal score
$234
$288
Round trip

Seattle to Boston: Overview

Insights for flights from Seattle to Boston

A typical journey from Seattle to Boston takes about 5h 25m, including connections. Given that 47.5% of recent fares are non-stop, many itineraries will involve at least one stopover. For connecting flights, the median number of stopovers is 2, which can significantly extend the overall travel time.

Right now, if you are looking for cheap flights from Seattle to Boston, fares are typically between $317–$705, with a median of $427. Current fares are above the typical level. There are no recent fares classified as a good price, indicating that finding a particularly low fare may require more flexibility.

When is the cheapest time to fly from Seattle to Boston? The data indicates that February is typically the most affordable month, with a median fare of $293. Following closely are January, with a median fare of $296, and May, with a median fare of $297. These months offer the lowest median prices for this route.

The route from Seattle to Boston covers a distance of 4006 km. This classifies the journey as a long-haul flight, meaning you should expect a substantial travel time. New deals for this route appear almost daily, offering frequent opportunities to find suitable fares.

How much is a round trip from Seattle to Boston

Regular price: $276 - $396

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

The regular price range for flights from Seattle to Boston is between $276 and $396. The current lowest deal is $274 with Frontier Airlines, for travel from Aug 26 to Sep 14.

now $274

Low $276

High $396

The cheapest time to fly from Seattle to Boston

The cheapest month to fly from Seattle to Boston is April, with a median price of $197. The most expensive month is August, with a median price of $560. Generally, prices are lower from January to December.

April

Cheapest

Flights from $197

August

Most Expensive

Flights from $560

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Boston

JetBlue Airways

Last-minute flights going from Seattle to Boston

Mon, Aug 3

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

JetBlue Airways

$670

$625

One-way

Mon, Aug 3

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

Alaska Airlines, Inc.

$675

$678

One-way

Tue, Aug 4

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

Alaska Airlines, Inc.

$650

$622

One-way

Tue, Aug 4

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

Deutsche Luft Hansa

$646

$652

One-way

Tue, Aug 4

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

JetBlue Airways

$667

$659

One-way

Thu, Aug 6

⌛ Last-Minute

SEA - Boston

Seattle (SEA) - Boston (BOS)

Alaska Airlines, Inc.

$646

$511

One-way

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

4 nights

Aug 6 - Aug 10

$646 → $511

21%

3 nights

Aug 16 - Aug 19

$547 → $444

19%

8 nights

Aug 14 - Aug 22

$420 → $326

22%

4 nights

Aug 26 - Aug 30

$428 → $338

21%

Popular Airports to fly from Seattle to Boston

Seattle - Boston route insights

💸 Price insights

Recent fares are above the typical level.

Recent fares for Seattle to Boston are above the typical level at $274.

📅 Best time to fly

Fly in April for the best prices.

Historically, April is the cheapest month to fly from Seattle to Boston, with a median price of $197.

⏱️ Flight duration

Direct flights take 5h 25m.

The median flight duration for a direct flight from Seattle to Boston is 5h 25m.

✈️ Airlines & availability

47.5% of recent flights are direct.

Historically, 47.5% of flights from Seattle to Boston are direct, with connecting flights having 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights.

JetBlue Airways is an airline that has offered direct flights on this route recently.

🎯 Booking tip

Deals are frequent on this route.

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

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International is a convenient option for flights from Seattle to Boston, offering competitive prices.

📍 ~18 km from Seattle (reachable by car or train)

💸 Flights from ~$273

Boston main airports to arrive at

Logan International (BOS)

Cheapest

Boston Logan International Airport is ideal for direct access to Boston and surrounding areas.

📍 Located ~4 km from Boston (reachable by car, taxi, or public transport).

💸 Flights from ~$222

Airports nearby Boston used as alternative

Rhode Island T. F. Green Int'l Airport (PVD)

Consider PVD for a major regional hub with easy highway access, often featuring lower parking rates.

📍 ~70 km from Boston (reachable by car)

💸 Flights from ~$359

Frequently Asked Questions About Flights to Boston

Historically, the optimal booking window for flights from Seattle to Boston is typically 14-27 days before departure. During this period, the average price observed was $338. Booking within 0-6 days of departure generally sees a significantly higher average price of $837, while booking 7-13 days out shows an average of $1042. Prices tend to increase as the departure date approaches, with flights booked 60+ days out averaging around $589.

Across the trailing quarter, a good price for a flight from Seattle to Boston is considered to be $317 or less. The median price for this route was $427. Fares around $705 or higher are typically on the more expensive side for this route. These figures are based on observations over a 90-day period.

Historically, the cheapest months to fly from Seattle to Boston include February, with a median price of $293, and January, with a median price of $296. May also shows a competitive median price of $297. The annual median price for this route is $427, indicating that these months offer notable savings compared to the overall average.

Seattle to Boston: Overview

Insights for flights from Seattle to Boston

How much is a round trip from Seattle to Boston

Regular price: $276 - $396

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

The regular price range for flights from Seattle to Boston is between $276 and $396. The current lowest deal is $274 with Frontier Airlines, for travel from Aug 26 to Sep 14.

now $274

Low $276

High $396

The cheapest time to fly from Seattle to Boston

April

Cheapest

Flights from $197

August

Most Expensive

Flights from $560

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec