This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOS
29 Dec — 5 Jan1
Round-trip
1 adult
Economy
The best prices from Seattle/Tacoma Intl to Boston Logan Intl are usually found in January or February, booked 38 days in advance, depart on a Sunday or Monday and return on a Wednesday
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 December 2024.
Explore the most affordable flight options available from Seattle to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 December 2024.
Mon 30/129:10 p.m.SEA - BOS
Nonstop5h 20mAlaska Airlines
Sat 11/15:55 p.m.BOS - SEA
Nonstop6h 39mAlaska Airlines
Deal found 22/12C$ 413
Mon 30/125:30 a.m.SEA - BOS
1 stop8h 22mDelta
Thu 9/17:10 a.m.BOS - SEA
Nonstop6h 35mDelta
Deal found 22/12C$ 528
Mon 30/127:10 p.m.SEA - BOS
1 stop7h 47mUnited Airlines
Mon 6/14:53 p.m.BOS - SEA
1 stop9h 24mUnited Airlines
Deal found 23/12C$ 533
Sat 28/121:50 p.m.SEA - BOS
Nonstop5h 07mJetBlue
Fri 3/19:16 a.m.BOS - SEA
Nonstop6h 22mJetBlue
Deal found 24/12C$ 585
Wed 25/128:25 a.m.SEA - BOS
1 stop12h 15mSouthwest
Sun 5/17:10 p.m.BOS - SEA
1 stop8h 40mSouthwest
Deal found 22/12C$ 799
Thu 26/1211:59 p.m.SEA - BOS
1 stop20h 10mSun Country Air
Mon 30/1211:46 a.m.BOS - SEA
1 stop25h 49mSun Country Air
Deal found 23/12C$ 942
Mon 30/1212:31 a.m.SEA - BOS
1 stop7h 55mAmerican Airlines
Sun 5/17:25 a.m.BOS - SEA
1 stop10h 25mAmerican Airlines
Deal found 22/12C$ 2,338
Best flights from Seattle to Boston
Discover carefully curated flight deals from Seattle to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 24 December 2024.
Thu 9/17:30 a.m.SEA - BOS
Nonstop5h 29mDelta
Sat 18/17:10 a.m.BOS - SEA
Nonstop6h 35mDelta
Deal found 24/12C$ 283
Thu 9/13:20 p.m.SEA - BOS
Nonstop5h 10mJetBlue
Wed 15/110:45 a.m.BOS - SEA
Nonstop6h 25mJetBlue
Deal found 23/12C$ 285
Thu 23/13:45 p.m.SEA - BOS
Nonstop5h 14mAlaska Airlines
Wed 29/15:24 p.m.BOS - SEA
1 stop19h 06mAlaska Airlines
Deal found 23/12C$ 296
Sat 11/15:00 a.m.SEA - BOS
2 stops9h 23mUnited Airlines
Thu 16/18:00 a.m.BOS - SEA
1 stop10h 45mUnited Airlines
Deal found 24/12C$ 375
Mon 6/12:16 p.m.SEA - BOS
2 stops19h 18mSpirit Airlines
Mon 13/17:13 a.m.BOS - SEA
3 stops44h 06mSpirit Airlines
Deal found 23/12C$ 427
Wed 8/17:30 a.m.SEA - BOS
2 stops11h 10mSouthwest
Tue 14/12:05 p.m.BOS - SEA
1 stop11h 35mSouthwest
Deal found 23/12C$ 433
Thu 17/46:20 p.m.SEA - BOS
1 stop26h 14mSun Country Air
Mon 21/411:31 a.m.BOS - SEA
1 stop8h 48mSun Country Air
Deal found 23/12C$ 633
Direct flights from Seattle to Boston
Explore direct flight options from Seattle to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 24 December 2024.
Thu 9/17:30 a.m.SEA - BOS
Nonstop5h 29mDelta
Sat 18/17:10 a.m.BOS - SEA
Nonstop6h 35mDelta
Deal found 24/12C$ 283
Thu 9/13:20 p.m.SEA - BOS
Nonstop5h 10mJetBlue
Wed 15/110:45 a.m.BOS - SEA
Nonstop6h 25mJetBlue
Deal found 23/12C$ 285
Sat 1/28:26 a.m.SEA - BOS
Nonstop5h 29mAlaska Airlines
Sat 1/25:55 p.m.BOS - SEA
Nonstop6h 39mAlaska Airlines
Deal found 24/12C$ 303
Last-minute flights from Seattle to Boston
Discover last-minute flight deals from Seattle to Boston. Data last updated 24 December 2024 and is based on user searches.
Thu 26/1211:59 p.m.SEA - BOS
1 stop20h 10mSun Country Air
Mon 30/1211:46 a.m.BOS - SEA
1 stop25h 49mSun Country Air
Deal found 23/12C$ 942
Mon 30/127:10 p.m.SEA - BOS
1 stop7h 47mUnited Airlines
Mon 6/14:53 p.m.BOS - SEA
1 stop9h 24mUnited Airlines
Deal found 23/12C$ 533
Mon 30/129:50 a.m.SEA - BOS
2 stops11h 30mSouthwest
Sat 4/15:10 a.m.BOS - SEA
2 stops12h 05mSouthwest
Deal found 23/12C$ 871
Mon 30/1212:31 a.m.SEA - BOS
1 stop7h 55mAmerican Airlines
Sun 5/17:25 a.m.BOS - SEA
1 stop10h 25mAmerican Airlines
Deal found 22/12C$ 2,338
Wed 1/11:50 p.m.SEA - BOS
Nonstop5h 07mJetBlue
Wed 22/110:45 a.m.BOS - SEA
Nonstop6h 25mJetBlue
Deal found 24/12C$ 413
Fri 3/17:15 p.m.SEA - BOS
1 stop7h 18mAlaska Airlines
Fri 10/15:55 p.m.BOS - SEA
Nonstop6h 39mAlaska Airlines
Deal found 22/12C$ 426
Fri 3/111:35 p.m.SEA - BOS
Nonstop5h 27mDelta
Wed 8/17:05 p.m.BOS - SEA
Nonstop6h 20mDelta
Deal found 22/12C$ 456
Mon 6/12:16 p.m.SEA - BOS
2 stops19h 18mSpirit Airlines
Mon 13/17:13 a.m.BOS - SEA
3 stops44h 06mSpirit Airlines
Deal found 23/12C$ 427
Wed 8/17:30 a.m.SEA - BOS
2 stops11h 10mSouthwest
Tue 14/12:05 p.m.BOS - SEA
1 stop11h 35mSouthwest
Deal found 23/12C$ 433
Thu 9/17:30 a.m.SEA - BOS
Nonstop5h 29mDelta
Sat 18/17:10 a.m.BOS - SEA
Nonstop6h 35mDelta
Deal found 24/12C$ 283
Thu 9/13:20 p.m.SEA - BOS
Nonstop5h 10mJetBlue
Wed 15/110:45 a.m.BOS - SEA
Nonstop6h 25mJetBlue
Deal found 23/12C$ 285
Sat 11/15:00 a.m.SEA - BOS
2 stops9h 23mUnited Airlines
Thu 16/18:00 a.m.BOS - SEA
1 stop10h 45mUnited Airlines
Deal found 24/12C$ 375
One-way flights from Seattle to Boston
Search for one-way flight options from Seattle to Boston. Find affordable one-way fares based on user searches. Data last updated 24 December 2024.
Tue 14/17:30 a.m.SEA - BOS
Nonstop5h 29mDelta
Deal found 23/12C$ 142
Wed 5/212:45 a.m.SEA - BOS
1 stop9h 52mAmerican Airlines
Deal found 24/12C$ 157
Fri 10/16:00 p.m.SEA - BOS
1 stop8h 56mUnited Airlines
Deal found 23/12C$ 184
Thu 8/511:19 p.m.SEA - BOS
Nonstop5h 10mJetBlue
Deal found 23/12C$ 200
Thu 6/27:10 a.m.SEA - BOS
2 stops23h 18mSpirit Airlines
Deal found 24/12C$ 214
Thu 23/16:55 a.m.SEA - BOS
2 stops12h 17mAlaska Airlines
Deal found 23/12C$ 234
Tue 8/47:35 a.m.SEA - BOS
2 stops11h 55mSouthwest
Deal found 24/12C$ 249
Sat 5/45:15 a.m.SEA - BOS
2 stops35h 25mMultiple Airlines
Deal found 23/12C$ 2,071
Sun 22/69:00 a.m.SEA - BOS
2 stops31h 40mTurkish Airlines
Deal found 23/12C$ 9,799
Find flights from Seattle to Boston within your budget
Customize your flight search to find flights from Seattle to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 24 December 2024.
Fly from
Any airport
Fly to
Any airport
Route
Depart
Return
Price
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 9/1
7:30 a.m.-3:59 p.m.
Nonstop5h 29m
Boston Logan Intl
Sat 18/1
7:10 a.m.-10:45 a.m.
Nonstop6h 35m
C$ 283
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 9/1
3:20 p.m.-11:30 p.m.
Nonstop5h 10m
Boston Logan Intl
Wed 15/1
10:45 a.m.-2:10 p.m.
Nonstop6h 25m
C$ 285
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 23/1
3:45 p.m.-11:59 p.m.
Nonstop5h 14m
Boston Logan Intl
Wed 29/1
5:24 p.m.-9:30 a.m.
1 stop19h 06m
C$ 296
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Sat 11/1
5:00 a.m.-5:23 p.m.
2 stops9h 23m
Boston Logan Intl
Thu 16/1
8:00 a.m.-3:45 p.m.
1 stop10h 45m
C$ 375
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Mon 6/1
2:16 p.m.-12:34 p.m.
2 stops19h 18m
Boston Logan Intl
Mon 13/1
7:13 a.m.-12:19 a.m.
3 stops44h 06m
C$ 427
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 8/1
7:30 a.m.-9:40 p.m.
2 stops11h 10m
Boston Logan Intl
Tue 14/1
2:05 p.m.-10:40 p.m.
1 stop11h 35m
C$ 433
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Thu 17/4
6:20 p.m.-11:34 p.m.
1 stop26h 14m
Boston Logan Intl
Mon 21/4
11:31 a.m.-5:19 p.m.
1 stop8h 48m
C$ 633
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Tue 14/1
7:30 a.m.-3:59 p.m.
Nonstop5h 29m
C$ 142
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Wed 5/2
12:45 a.m.-1:37 p.m.
1 stop9h 52m
C$ 157
SeattleBoston
SEA - BOS
SEABOS
Seattle/Tacoma Intl
Mon 24/2
11:48 p.m.-8:03 a.m.
Nonstop5h 15m
C$ 171
Flights are sorted by cheapest round-trip flights first.
Deals found on 23/12
Showing 1-10 of 16 results
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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 round-trip 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.
Travel insights for flights from Seattle to Boston
Get recent, data-driven insights about flights from Seattle to Boston including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from Seattle to Boston?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Boston. Price data was last updated on 20 December 2024.
Booking 38 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Boston?
Currently, January is the cheapest month in which you can book a flight from Seattle to Boston (average of C$ 298). Flying from Seattle to Boston in April is currently the most expensive (average of C$ 350). 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.
What is the cheapest time of day to fly from SEA to BOS?
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 December 2024.
A simple way to save on the total cost of your ticket is to fly from Seattle to Boston in the morning. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight in the afternoon.
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 December 2024.
The most flights from SEA to BOS are scheduled on a Monday (29 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).
Rainfall in Boston by month
Plan your trip to Boston by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 mm per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.
Temperature in Boston by month
Plan your trip to Boston by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 24 December 2024.
To help decide which airline to fly from Seattle to Boston, see what other customers have to say about Alaska Airlines, United Airlines and Southwest. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
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 airports do I use to fly from Seattle to Boston?
Booking a flight from Seattle/Tacoma Intl (SEA) to Boston Logan Intl (BOS) is your only option if you wish to fly from Seattle to Boston. On a typical day, there are 19 flights from Seattle/Tacoma Intl to Logan Intl, all of which are around 5h 20m for a nonstop flight. You can also purchase a plane ticket from 3 airlines when you book a flight from Seattle/Tacoma Intl to Boston.
How popular is this Seattle to Boston flight route?
The Seattle/Tacoma Intl to Boston Logan Intl flight path was viewed by 61 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from Seattle to Boston round-trip?
Delta, at C$ 283, was found to be the cheapest airline from Seattle to Boston.Alternate airlines to your destination round-trip include JetBlue and Alaska Airlines. You may be able to fly from Seattle to Boston for 47% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Seattle to Boston one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as C$ 142. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Seattle to Boston for a low price.
What are the most reliable airlines from Seattle to Boston?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Boston on time: KLM (100%), EL AL (100%), LATAM Airlines (100%).
What are the cheapest flights from Seattle to Boston?
While on average a flight from Seattle to Boston is generally C$ 539, our data shows the cheapest flight currently is C$ 233. When looking at the most popular route, (Seattle/Tacoma Intl - Boston Logan Intl), you can expect to pay C$ 326 for that flight.
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.
What is the cheapest month to book a flight from Seattle to Boston?
Currently, January is the cheapest month in which you can book a flight from Seattle to Boston (average of C$ 298). Flying from Seattle to Boston in April is currently the most expensive (average of C$ 350). 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.
Browse thousands of different options on Cheapflights for your next trip
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Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 24 December 2024.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 24 December 2024.
Discover the top 3 airlines that operate flights from Seattle to Boston. 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 629,999 searches. Data last updated 24 December 2024.
Find the best flight deals on Cheapflights, where travelers 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?
Cheapflights helps you search for flights from Seattle to Boston via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Boston?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Boston.
Can Cheapflights find flights from Seattle to Boston with no change fees?
Yes! Cheapflights helps users easily find flights from Seattle to Boston with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to Boston become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Boston from Seattle today and book when prices fit your budget.
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