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Cheap flights from Seattle to Boston

SEA — BOS
29 May — 5 Jun1
1 adult
Wed 29/5
Wed 5/6

Cheap flight deals from Seattle to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Boston (BOS). 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 24 May 2024.

Popular in

July

Cheapest in

January

Average price

£307

Round-trip from

£394
High demand for flights, 26% potential price rise
Best time to find cheap flights, 39% potential price drop
Average for round-trip flights in May 2024
From Seattle/Tacoma Intl to Boston Logan Intl

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

Find a great deal and save up to 44% by booking at least 42 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 Seattle to Boston within the next two weeks, with the cheapest ticket starting at £267.

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

January can be a great time to fly to Boston from Seattle with a flight ticket averaging about £296. Cheapflights users have found deals in the month of January for as cheap as £78. The most expensive prices can be found in the month of July.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Boston as you normally would.

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

Use this chart to determine the optimal time to book a return flight from Seattle to Boston. Price data was last updated on 22 May 2024.
The best time to book flights from Seattle to Boston is 41 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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Best time to book a flight from Seattle to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Seattle 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 Boston by month

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

BOS

Temperature

-1 - 23 °C

Related info for your journey

Find useful and relevant information for your journey from Seattle to Boston. 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 Seattle to Boston?

    Days when direct flights are available for this flight are: Tuesday, Friday, Saturday.

  • How popular is this Seattle to Boston flight route?

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

    On average, you can expect to see 7 flights from Seattle to Boston a day.
    Early Morning (Midnight to 6am) - 43% of flight departures
    Afternoon (Midday - 6pm) - 43% of flight departures
    Evening (6pm - Midnight) - 14% of flight departures

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

    The top 3 most reliable airlines when flying from Seattle to Boston are EL AL (92%), KLM (91%) and China Eastern (83%).

  • What does SEA to BOS mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Seattle/Tacoma Intl Airport to Boston Logan Intl Airport flight would often be abbreviated as a SEA to BOS flight.

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

    The amount of baggage you can bring on your Seattle to Boston 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 Seattle to Boston with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Boston 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 Seattle to Boston that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Boston 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 Seattle to Boston that allow pets onboard?

    Many airlines flying from Seattle to Boston 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 Seattle to Boston?

    Yes, you can often find last-minute deals on Seattle to Boston 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 Seattle to Boston?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Boston (average of £501). Flying from Seattle to Boston in July is currently the most expensive (average of £697). 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

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Search flights from Seattle to Boston by cabin class

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

Hourly flight availability from Seattle to Boston

Find hourly flight availability from Seattle to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 May 2024.
7%of flight departuresEarly morningMidnight to 6 am
49%of flight departuresMorning6 am to noon
35%of flight departuresAfternoonNoon to 6 pm
9%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Weekly flight availability from Seattle to Boston

Explore weekly flight availability from Seattle to Boston. 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 24 May 2024.
Monday23daily flights
Tuesday23daily flights
Wednesday22daily flights
Thursday24daily flights
Friday22daily flights
Saturday20daily flights
Sunday21daily 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 Seattle to Boston?

Deals for Seattle to Boston flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Boston from Seattle.

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

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

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

Not ready to book yet? You can track prices for flights from Seattle to Boston on Cheapflights with our Price Alert feature and get notified when better prices are available.

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