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Cheap flights from Boston to Seattle

BOS — SEA
27 May — 3 Jun1
1 adult
Mon 27/5
Mon 3/6

The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in January or February, booked 30 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Boston to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 May 2024.

Popular in

August

Cheapest in

January

Average price

£301

Round-trip from

£453
High demand for flights, 27% potential price rise
Best time to find cheap flights, 33% potential price drop
Average for round-trip flights in May 2024
From Boston Logan Intl to Seattle/Tacoma Intl

What is the cheapest day to fly round-trip from Boston to Seattle?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 52% on the overall cost on flights from Boston to Seattle.

How far in advance should I book a flight from Boston to Seattle?

Find a great deal and save up to 33% by booking at least 31 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Boston to Seattle within the next two weeks, with the cheapest ticket starting at £260.

What is the cheapest month to fly from Boston to Seattle?

Our data shows that January tends to be the cheapest month to fly to Seattle from Boston. Users have commonly found prices around £281 for the month, but tickets can be as low as £78. Due to multiple factors, prepare for potentially higher prices in August.

When is the cheapest time to fly from Boston to Seattle (BOS - SEA)?

It’s typically best to fly out from Boston to Seattle at midday. Doing so could potentially save you 65% on the flight price compared to flying in the morning, which is usually more expensive.

When is the best time to book a flight from Boston to Seattle?

Use this chart to determine the optimal time to book a return flight from Boston to Seattle. Price data was last updated on 10 May 2024.
The best time to book flights from Boston to Seattle is 30 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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When is the cheapest time to fly from Boston to Seattle?

Use this chart to determine the cheapest time to fly return from Boston to Seattle. Price data was last updated on 19 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Boston to Seattle flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Boston to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Boston with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

5 - 19 °C

Related info for your journey

Find useful and relevant information for your journey from Boston to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What days are direct flights available from Boston to Seattle?

    Direct flights are available for this route on the following days: Sunday, Monday, Wednesday, Thursday, Saturday.

  • How popular is this Boston to Seattle flight route?

  • How many flights depart from Boston to Seattle on average per day?

    13 flight departures from Boston to Seattle per day on average.
    Morning (6am - Midday) - 69% of flight departures
    Afternoon (Midday - 6pm) - 31% of flight departures

  • What are the most reliable airlines from Boston to Seattle?

    Consider China Eastern (95%), Air Tahiti Nui (90%) or Virgin Atlantic (89%) when booking your flight. These represent the most reliable airlines when flying from Boston to Seattle.

  • What does BOS to SEA mean?

    BOS stands for Boston Logan Intl Airport, while SEA stands for Seattle/Tacoma Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Boston to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Boston to Seattle that include hotel bookings?

    Yes. In addition to deals on Boston to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Boston to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Seattle.

  • Can I find deals for business class flights from Boston to Seattle?

    Yes. Cheapflights offers flight deals from Boston to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Boston to Seattle that allow pets onboard?

    Many airlines flying from Boston to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to Seattle?

    Yes, you can often find last-minute deals on Boston to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • When is the best time to book a flight from Boston to Seattle?

    Currently, December is the cheapest month in which you can book a flight from Boston to Seattle (average of £576). Flying from Boston to Seattle in July is currently the most expensive (average of £805). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Boston to Seattle

Discover the top airline that operate flights from Boston to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 863,249 searches. Data last updated 22 May 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£147Average£274FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Search flights from Boston to Seattle by cabin class

Find flights from Boston to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Boston to Seattle

Find hourly flight availability from Boston to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 May 2024.
9%of flight departuresEarly morningMidnight to 6 am
58%of flight departuresMorning6 am to noon
30%of flight departuresAfternoonNoon to 6 pm
3%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Boston to Seattle

Explore weekly flight availability from Boston to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 22 May 2024.
Monday23daily flights
Tuesday25daily flights
Wednesday21daily flights
Thursday22daily flights
Friday25daily flights
Saturday20daily flights
Sunday22daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Seattle?

When you search for this flight from Boston to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Boston to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Boston to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Boston to Seattle become cheaper?

Of course! You can now track prices for flights from Boston to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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