Cheap flights from Boston to Seattle (BOS - SEA)
The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in January or February, booked 29 days in advance, depart on a Wednesday or Thursday and return on a Tuesday
How to find the cheapest flight from Boston (BOS) to Seattle (SEA)
All the information you need to plan the best BOS to SEA flight in 2023: compare Boston to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
BOS - SEA Price | $217 - $644 |
|---|---|
SEA Temperature | 41 - 66.2 °F |
SEA Rainfall | 0.7 - 6.6 inches |
| Popular in | June | High demand for flights, 38% potential price rise |
|---|---|---|
| Cheapest in | January | Best time to find cheap flights, 45% potential price drop |
| Round-trip from | $217 | From Boston Logan Intl to Seattle/Tacoma Intl |
| One-way from | $106 | One-way flight from Boston Logan Intl to Seattle/Tacoma Intl |
What is the cheapest day to fly round-trip from Boston to Seattle?
Tuesday is generally a great day to depart. Flying on this day could help you save up to 23%.
How far in advance should I book a flight from Boston to Seattle?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 29 days in advance, which can save you up to 35% on flights from Boston to Seattle compared to booking the week you need them. Waiting 29 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $437. For sooner than that we have options available in the next 3 days from $554.
What is the cheapest month to fly from Boston to Seattle?
January can be a great time to fly to Seattle from Boston with a flight ticket averaging about $396. Cheapflights users have found deals in the month of January for as cheap as $191. The most expensive prices can be found in the month of June.
When is the cheapest time to fly from Boston to Seattle (BOS - SEA)?
One of the essential ways to save on airfare from Boston to Seattle is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.
Cheap flights from Boston to Seattle in February, March 2023
The best prices found for BOS to SEA flights for February, March
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston to Seattle 2023 flight deals
Cheap flights to Seattle from Boston found for this year
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Cheap Alaska Airlines flights from Boston to Seattle
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Alaska Airlines is one of the most popular airlines used for those traveling from Boston to Seattle. Flights on this route from Alaska Airlines typically cost $337.20 RT, a price that is 53% cheaper than the average Boston to Seattle flight. The cheapest flight found was $119 RT. Boston Logan Intl Airport is the most common Boston airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Boston to Seattle, Alaska Airlines flights are 36% more popular than any other airline flying that same route.
Cheap American Airlines flights from Boston to Seattle
Boston Logan Intl
Seattle/Tacoma Intl
1 stop
11h 59mSeattle/Tacoma Intl
Boston Logan Intl
1 stop
10h 11mAmerican Airlines
Boston Logan Intl
Seattle/Tacoma Intl
1 stop
11h 59mSeattle/Tacoma Intl
Boston Logan Intl
1 stop
8h 13mAmerican Airlines
Boston Logan Intl
Seattle/Tacoma Intl
1 stop
11h 59mSeattle/Tacoma Intl
Boston Logan Intl
2 stops
11h 20mAmerican Airlines
If you’re traveling from Boston to Seattle, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $457.64 RT. This price is typically 47% more expensive than other airlines that offer Boston to Seattle flights. When booking this route, the cheapest RT price found was $149. The most popular departure airport in Boston when flying to Seattle is Boston Logan Intl Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from Boston to Seattle, American Airlines flights are 34% more popular than any other airline flying that same route.
Non-stop flights to Seattle from Boston
Save time with Boston to Seattle direct flight deals
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 33mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 15mAlaska Airlines
Last minute flights from Boston to Seattle
Late deals on return flights to Seattle from Boston, departing today and this week
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 16mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 16mAlaska Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mSeattle/Tacoma Intl
Boston Logan Intl
Nonstop
5h 07mMultiple Airlines
One-way flights to Seattle from Boston
The cheapest one-way flights from Boston to Seattle
Boston Logan Intl
Seattle/Tacoma Intl
2 stops
30h 38mMultiple Airlines
Boston Logan Intl
Seattle/Tacoma Intl
2 stops
23h 03mSpirit Airlines
Boston Logan Intl
Seattle/Tacoma Intl
Nonstop
6h 30mUndisclosed Carrier
Reviews of Airlines Servicing Seattle
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Overall
Food
Boarding
Entertainment
Crew
Comfort
Reviews
No in flight entertainment and had to preorder and pay for food on a six and a half hour flight!
Related info for your journey
Useful info, stats and facts about Boston to Seattle flights.
What airports do I use to fly from Boston to Seattle?
You will need to book a flight from Boston Logan Intl to Seattle/Tacoma Intl if you want to fly from Boston to Seattle. At least 13 different airlines have flights from Logan Intl (BOS) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 19 flights to Seattle from the Boston airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BOS to SEA to be around 6h 17m.
Which airlines flying from Boston Logan Intl to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?
Delta, Alaska Airlines, and JetBlue are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
Can I find flights from Boston to Seattle for under $200 on Cheapflights?
Yes, there are multiple flights from Boston to Seattle for under $200. The cheapest flight booked recently is on Alaska Airlines for just $178, but on average you can expect to pay $198.
Are there nonstop flights from Boston to Seattle for under $200 on Cheapflights?
Cheapflights has at least 20 direct flights from Boston to Seattle under $200. A good price for a nonstop flight from Boston to Seattle is less than $206.
Are there last-minute flights available from Boston to Seattle for under $300?
There are currently 20+ open flights from Boston to Seattle within the next 7 days for less than $300.
What days are nonstop flights available from Boston to Seattle?
Nonstop flights can be found on the following days: Sunday, Monday, Thursday, Saturday.
How popular is this Boston to Seattle flight route?
Flights from Boston Logan Intl to Seattle/Tacoma Intl have been viewed 168 times in the past calendar month.
How many flights depart from Boston to Seattle on average per day?
9 flight departures from Boston to Seattle per day on average.
Morning (6am - Noon) - 89% of flight departures
Evening (6pm - Midnight) - 11% of flight departures
How long is the flight from Boston to Seattle?
Departing from Boston to Seattle will take you 6h 30m. The distance between Boston and Seattle is about 2502 mi. Generally, flights for this route are nonstop.
What are the cheapest airlines flying from Boston to Seattle round-trip?
According to our current data, Alaska Airlines ($178), Undisclosed Carrier ($195), and JetBlue ($208) offers the cheapest pricing from Boston to Seattle. These flights start at 55% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Boston to Seattle one-way?
One-way options have recently been found by users for as low as $94 on Spirit Airlines. Other airlines that offer cheap prices include Undisclosed Carrier from $96 and Alaska Airlines from $99 one-way.
What are the most popular airlines that fly from Boston to Seattle?
Before booking your flight from Boston to Seattle check out the most popular airlines for this route: Undisclosed Carrier, Endeavor Airlines or American Airlines.
What are the most reliable airlines from Boston to Seattle?
Consider EL AL (100%), Japan Airlines (88%) or Air Tahiti Nui (86%) when booking your flight. These represent the most reliable airlines when flying from Boston to Seattle.
What are the cheapest flights from Boston to Seattle?
On average you can expect to pay $1,044 for a flight from Boston to Seattle. The cheapest flight overall is $99 while the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl) is currently priced at $197.
Other flights from Boston
Flights to Seattle from Boston
Alternative routes for Boston to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Boston to Seattle
The chart below displays the airlines Cheapflights users traveling from Boston to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Hourly flight availability from Boston to Seattle
See what time of day planes typically take off from Boston to Seattle
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 42%of flight departures | Morning6 am to noon |
| 35%of flight departures | AfternoonNoon to 6 pm |
| 22%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Boston to Seattle
See how many times per day planes take to the skies headed from Boston to Seattle
| Sunday | 20daily flights |
|---|---|
| Monday | 22daily flights |
| Tuesday | 20daily flights |
| Wednesday | 20daily flights |
| Thursday | 17daily flights |
| Friday | 20daily flights |
| Saturday | 19daily flights |