Cheap flights from Boston to Seattle (BOS - SEA) from $89

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight to Seattle departing on 3/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — SEA
Mar 3 — Mar 101

The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in January or February, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 February 27, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$243

One-way from

$91
High demand for flights, 30% potential price rise
Best time to find cheap flights, 39% potential price drop
From Boston Logan Intl to Seattle/Tacoma Intl
One-way flight from Boston Logan Intl to Seattle/Tacoma Intl

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

Monday is generally a great day to depart. Flying on this day could help you save up to 9%.

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 28 days in advance, which can save you up to 28% on flights from Boston to Seattle compared to booking the week you need them. Waiting 28 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 $335. For sooner than that we have options available in the next 3 days from $521.

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 $357. Cheapflights users have found deals in the month of January for as cheap as $108. 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 in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.

Cheap Spirit Airlines flights from Boston to Seattle

Explore cheap flight options specifically provided by Spirit Airlines for the route between Boston and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
Find some of the cheapest Spirit Airlines flights traveling from Boston to Seattle. Make sure to double check the flight details before booking.
Mon 4/221:42 pmBOS - SEA
2 stops22h 03mSpirit Airlines
Wed 5/89:42 amSEA - BOS
1 stop11h 28mSpirit Airlines
Deal found 2/26$190
Tue 5/1412:17 pmBOS - SEA
1 stop23h 22mSpirit Airlines
Tue 5/2110:00 pmSEA - BOS
1 stop23h 10mSpirit Airlines
Deal found 2/26$204
Wed 5/14:10 pmBOS - SEA
2 stops19h 35mSpirit Airlines
Wed 5/811:57 amSEA - BOS
1 stop9h 13mSpirit Airlines
Deal found 2/25$213
Mon 4/221:42 pmBOS - SEA
2 stops22h 03mSpirit Airlines
Wed 5/810:00 pmSEA - BOS
2 stops23h 32mSpirit Airlines
Deal found 2/26$225
Mon 4/221:42 pmBOS - SEA
2 stops22h 03mSpirit Airlines
Mon 4/299:12 pmSEA - BOS
2 stops15h 04mSpirit Airlines
Deal found 2/26$248
Tue 3/1212:57 pmBOS - SEA
2 stops34h 24mSpirit Airlines
Wed 3/2011:01 amSEA - BOS
2 stops19h 59mSpirit Airlines
Deal found 2/26$257
Wed 5/812:17 pmBOS - SEA
1 stop11h 38mSpirit Airlines
Tue 5/149:42 amSEA - BOS
1 stop11h 28mSpirit Airlines
Deal found 2/25$274
Wed 3/203:56 pmBOS - SEA
2 stops19h 55mSpirit Airlines
Tue 3/269:41 amSEA - BOS
2 stops29h 56mSpirit Airlines
Deal found 2/26$275
Wed 3/2012:57 pmBOS - SEA
3 stops22h 54mSpirit Airlines
Tue 3/269:41 amSEA - BOS
2 stops29h 56mSpirit Airlines
Deal found 2/26$278
  • If you’re traveling from Boston to Seattle, one of the more common airlines traveling that route is Spirit Airlines. Boston to Seattle flights are typically 51% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $372.42 RT. The cheapest Spirit Airlines flight found for this route was $130. When traveling from Boston to Seattle on Spirit Airlines, the most popular airport to depart from is Boston Logan Intl Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from Boston to Seattle, Spirit Airlines flights are 9% more popular than any other airline flying that same route.

Cheap Sun Country Air flights from Boston to Seattle

Explore cheap flight options specifically provided by Sun Country Air for the route between Boston and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
Some of the lowest-priced Sun Country Air flights we've found at this time heading from Boston to Seattle. Deals frequently update to provide users with more options.
Mon 4/112:25 pmBOS - SEA
1 stop8h 05mSun Country Air
Mon 4/86:30 pmSEA - BOS
1 stop13h 13mSun Country Air
Deal found 2/26$256
Thu 3/2810:45 amBOS - SEA
1 stop10h 20mSun Country Air
Wed 4/38:00 pmSEA - BOS
1 stop11h 43mSun Country Air
Deal found 2/26$270
Thu 3/2810:45 amBOS - SEA
1 stop10h 20mSun Country Air
Sun 3/3111:59 pmSEA - BOS
1 stop8h 29mSun Country Air
Deal found 2/26$284
Wed 4/2411:30 amBOS - SEA
1 stop8h 25mSun Country Air
Sat 5/43:15 pmSEA - BOS
1 stop16h 18mSun Country Air
Deal found 2/26$285
Thu 5/211:30 amBOS - SEA
1 stop8h 25mSun Country Air
Sun 5/54:45 pmSEA - BOS
1 stop14h 48mSun Country Air
Deal found 2/25$309
  • Sun Country Air is one of the most popular airlines used for those traveling from Boston to Seattle. Flights on this route from Sun Country Air typically cost $377.81 RT, a price that is 68% more expensive than the average Boston to Seattle flight. The cheapest flight found was $139 RT. 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, Sun Country Air flights are 9% more popular than any other airline flying that same route.

Cheap Boston to Seattle flights in February & March 2024

Find cheap flight options from Boston to Seattle specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,397,584 searches. Prices were last updated on February 27, 2024.
The lowest fares we've come across on flights traveling from Boston to Seattle in February and March 2024. Check back soon for alternative fares.
Fri 3/298:45 amBOS - SEA
Nonstop6h 20mMultiple Airlines
Sun 4/711:59 pmSEA - BOS
1 stop7h 44mMultiple Airlines
Deal found 2/26$224
Thu 3/2810:45 amBOS - SEA
1 stop10h 20mMultiple Airlines
Tue 4/28:41 pmSEA - BOS
2 stops24h 18mMultiple Airlines
Deal found 2/27$229
Mon 3/185:00 pmBOS - SEA
2 stops30h 21mMultiple Airlines
Wed 3/276:31 pmSEA - BOS
1 stop12h 15mMultiple Airlines
Deal found 2/26$234
Mon 3/188:45 amBOS - SEA
Nonstop6h 20mMultiple Airlines
Wed 3/276:31 pmSEA - BOS
1 stop12h 15mMultiple Airlines
Deal found 2/26$244
Mon 3/46:50 amBOS - SEA
Nonstop6h 39mDelta
Wed 3/67:15 amSEA - BOS
Nonstop5h 29mDelta
Deal found 2/26$247
Thu 3/2810:45 amBOS - SEA
1 stop10h 20mMultiple Airlines
Tue 4/29:17 pmSEA - BOS
3 stops23h 42mMultiple Airlines
Deal found 2/27$248
Tue 3/2612:57 pmBOS - SEA
2 stops34h 57mMultiple Airlines
Wed 4/38:00 pmSEA - BOS
1 stop11h 43mMultiple Airlines
Deal found 2/26$251
Mon 3/45:00 pmBOS - SEA
Nonstop6h 35mMultiple Airlines
Mon 3/118:59 pmSEA - BOS
2 stops42h 38mMultiple Airlines
Deal found 2/26$253
Mon 3/257:00 amBOS - SEA
Nonstop6h 20mMultiple Airlines
Sun 3/3111:59 pmSEA - BOS
1 stop8h 29mMultiple Airlines
Deal found 2/27$254

Boston to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Boston and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
The lowest fares we've come across on flights traveling from Boston to Seattle in February and March 2024. Check back soon for alternative fares.
Mon 5/1312:17 pmBOS - SEA
1 stop23h 22mSpirit Airlines
Tue 5/2110:00 pmSEA - BOS
1 stop23h 10mSpirit Airlines
Deal found 2/27$174
Mon 5/1312:17 pmBOS - SEA
1 stop23h 22mSpirit Airlines
Wed 5/2211:57 amSEA - BOS
1 stop9h 13mSpirit Airlines
Deal found 2/27$184
Mon 4/221:42 pmBOS - SEA
2 stops22h 03mSpirit Airlines
Wed 5/89:42 amSEA - BOS
1 stop11h 28mSpirit Airlines
Deal found 2/26$190
Mon 4/2912:28 pmBOS - SEA
2 stops24h 16mMultiple Airlines
Wed 5/811:57 amSEA - BOS
1 stop9h 13mMultiple Airlines
Deal found 2/25$197
Tue 5/1412:17 pmBOS - SEA
1 stop23h 22mSpirit Airlines
Tue 5/2110:00 pmSEA - BOS
1 stop23h 10mSpirit Airlines
Deal found 2/26$204
Fri 5/310:05 pmBOS - SEA
2 stops25h 27mMultiple Airlines
Wed 5/811:57 amSEA - BOS
1 stop9h 13mMultiple Airlines
Deal found 2/26$210
Wed 5/14:10 pmBOS - SEA
2 stops19h 35mSpirit Airlines
Wed 5/811:57 amSEA - BOS
1 stop9h 13mSpirit Airlines
Deal found 2/25$213
Wed 4/244:10 pmBOS - SEA
2 stops19h 25mMultiple Airlines
Wed 5/811:57 amSEA - BOS
1 stop9h 13mMultiple Airlines
Deal found 2/27$220
Fri 3/298:45 amBOS - SEA
Nonstop6h 20mMultiple Airlines
Sun 4/711:59 pmSEA - BOS
1 stop7h 44mMultiple Airlines
Deal found 2/26$224

Non-stop flights to Seattle from Boston

Discover non-stop flight options from Boston to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
Consider booking one of these non-stop flights heading from Boston to Seattle. If you're looking for other options for flights from Boston to Seattle, make sure to update the search form at the top of page.
Fri 3/228:45 amBOS - SEA
Nonstop6h 20mAlaska Airlines
Mon 3/253:41 pmSEA - BOS
Nonstop5h 18mAlaska Airlines
Deal found 2/27$267
Fri 3/155:39 pmBOS - SEA
Nonstop6h 25mJetBlue
Tue 3/1910:20 pmSEA - BOS
Nonstop5h 16mJetBlue
Deal found 2/26$268
Tue 3/198:45 amBOS - SEA
Nonstop6h 20mAlaska Airlines
Tue 3/193:41 pmSEA - BOS
Nonstop5h 18mAlaska Airlines
Deal found 2/25$276
Mon 4/227:59 pmBOS - SEA
Nonstop6h 14mAlaska Airlines
Fri 4/263:39 pmSEA - BOS
Nonstop5h 20mAlaska Airlines
Deal found 2/25$280
Fri 3/298:45 amBOS - SEA
Nonstop6h 20mAlaska Airlines
Fri 3/293:41 pmSEA - BOS
Nonstop5h 18mAlaska Airlines
Deal found 2/26$281
Sat 4/67:00 amBOS - SEA
Nonstop6h 20mAlaska Airlines
Mon 4/89:26 pmSEA - BOS
Nonstop5h 19mAlaska Airlines
Deal found 2/27$282
Sat 3/165:50 pmBOS - SEA
Nonstop6h 20mAlaska Airlines
Wed 3/203:41 pmSEA - BOS
Nonstop5h 18mAlaska Airlines
Deal found 2/26$283
Wed 3/205:39 pmBOS - SEA
Nonstop6h 25mJetBlue
Fri 3/2210:20 pmSEA - BOS
Nonstop5h 16mJetBlue
Deal found 2/27$286
Mon 3/257:00 amBOS - SEA
Nonstop6h 20mAlaska Airlines
Fri 3/293:41 pmSEA - BOS
Nonstop5h 18mAlaska Airlines
Deal found 2/27$287

Boston to Seattle flights leaving soon

Find last-minute flight options from Boston to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
Book one of these great deals on flights from Boston to Seattle. Tip: verify your flight details before completing your reservation.
Mon 3/46:50 amBOS - SEA
Nonstop6h 39mDelta
Wed 3/67:15 amSEA - BOS
Nonstop5h 29mDelta
Deal found 2/26$247
Mon 3/45:00 pmBOS - SEA
Nonstop6h 35mMultiple Airlines
Mon 3/118:59 pmSEA - BOS
2 stops42h 38mMultiple Airlines
Deal found 2/26$253
Mon 3/46:50 amBOS - SEA
Nonstop6h 39mDelta
Tue 3/127:25 amSEA - BOS
Nonstop5h 20mDelta
Deal found 2/26$257
Mon 3/45:00 pmBOS - SEA
Nonstop6h 35mMultiple Airlines
Mon 3/118:59 pmSEA - BOS
2 stops42h 38mMultiple Airlines
Deal found 2/26$258
Mon 3/45:00 pmBOS - SEA
Nonstop6h 35mMultiple Airlines
Mon 3/118:59 pmSEA - BOS
2 stops42h 38mMultiple Airlines
Deal found 2/26$260
Tue 3/55:00 pmBOS - SEA
Nonstop6h 35mMultiple Airlines
Mon 3/118:59 pmSEA - BOS
2 stops42h 38mMultiple Airlines
Deal found 2/27$263
Tue 3/55:18 amBOS - SEA
1 stop10h 23mAmerican Airlines
Wed 3/611:25 pmSEA - BOS
1 stop8h 41mAmerican Airlines
Deal found 2/26$264
Mon 3/42:17 pmBOS - SEA
1 stop10h 11mAmerican Airlines
Wed 3/611:25 pmSEA - BOS
1 stop8h 41mAmerican Airlines
Deal found 2/26$266
Tue 3/511:05 amBOS - SEA
2 stops13h 55mUnited Airlines
Thu 3/77:15 pmSEA - BOS
1 stop7h 34mUnited Airlines
Deal found 2/27$271

One-way flights to Seattle from Boston

Search for one-way flight options from Boston to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,397,584 searches. Data last updated February 27, 2024.
If you're seeking multiple options on one-way flights from Boston to Seattle, be sure to check out these deals, which are updated often. For those needing a return trip from Boston, there is a search form available above.
Thu 3/2810:45 amBOS - SEA
1 stop10h 20mSun Country Air
Deal found 2/26$89
Thu 4/411:40 amBOS - SEA
1 stop14h 01mSun Country Air
Deal found 2/26$91
Tue 4/306:10 amBOS - SEA
2 stops29h 45mMultiple Airlines
Deal found 2/26$109
Tue 3/1212:57 pmBOS - SEA
2 stops34h 57mMultiple Airlines
Deal found 2/27$116
Tue 3/2612:57 pmBOS - SEA
2 stops34h 57mMultiple Airlines
Deal found 2/26$118
Mon 3/2510:37 pmBOS - SEA
2 stops49h 17mMultiple Airlines
Deal found 2/26$119
Mon 3/45:00 pmBOS - SEA
Nonstop6h 35mAlaska Airlines
Deal found 2/26$122
Tue 5/1412:17 pmBOS - SEA
1 stop23h 22mSpirit Airlines
Deal found 2/26$123
Tue 3/56:15 pmBOS - SEA
Nonstop6h 42mDelta
Deal found 2/26$124

Find flights from Boston to Seattle within your budget

Customize your flight search to find flights from Boston to Seattle 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 3,397,584 searches. Data last updated February 27, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$190 - $282

Route

Depart

Return

Price

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 4/22

2 stops22h 03m

Seattle/Tacoma Intl

Wed 5/8

1 stop11h 28m

$190

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 4/29

2 stops24h 16m

Seattle/Tacoma Intl

Wed 5/8

1 stop9h 13m

$197

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 5/14

1 stop23h 22m

Seattle/Tacoma Intl

Tue 5/21

1 stop23h 10m

$204

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 4/1

1 stop8h 05m

Seattle/Tacoma Intl

Mon 4/8

1 stop13h 13m

$256

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 3/22

Nonstop6h 25m

Seattle/Tacoma Intl

Wed 3/27

Nonstop5h 16m

$267

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 3/15

1 stop9h 15m

Seattle/Tacoma Intl

Tue 3/19

1 stop7h 18m

$271

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 3/20

1 stop12h 33m

Seattle/Tacoma Intl

Tue 3/26

1 stop9h 13m

$279

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 3/29

Nonstop6h 20m

Seattle/Tacoma Intl

Fri 3/29

Nonstop5h 18m

$281

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Fri 3/22

Nonstop6h 32m

Seattle/Tacoma Intl

Wed 3/27

Nonstop5h 25m

$282

Flights are sorted by cheapest first

Deals found on 2/26

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Seattle. Price data was last updated on January 28, 2024.
The price you pay for your flight from Boston to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 27 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from Boston to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Boston to Seattle. Price data was last updated on February 25, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to Seattle flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Seattle by month

Plan your trip from Boston to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to Seattle is currently $112 while a round-trip flight costs $247. Price data was last updated on February 18, 2024.

Currently, December is the cheapest month in which you can book a flight from Boston to Seattle (average of $243). Flying from Boston to Seattle in June is currently the most expensive (average of $424). 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.

January

$247

February

$254

March

$283

April

$299

May

$338

June

$424

July

$414

August

$347

September

$278

October

$257

November

$258

December

$243

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

41 - 66.2 °F

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 27, 2024.
To help decide which airline to fly from Boston to Seattle, see what other customers have to say about Spirit Airlines, Sun Country Air and JetBlue. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

8.1
Very good
9,255 reviews
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

8.1
Very good
11,830 reviews
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

7.7
Good
5,196 reviews
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

7.6
Good
3,142 reviews
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

7.4
Good
11,817 reviews
8.1
Very good
9,255 reviews

Overall

8.1

Food

7.4

Entertainment

7.4

Comfort

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

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 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 8 different airlines have flights from Logan Intl (BOS) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 22 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 05m.

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 Spirit Airlines for just $190, but on average you can expect to pay $232.

Are there nonstop flights from Boston to Seattle for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to Seattle under $300. A good price for a nonstop flight from Boston to Seattle is less than $301.

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, Tuesday, Wednesday, Thursday, Friday.

How popular is this Boston to Seattle flight route?

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

11 flight departures from Boston to Seattle per day on average.
Morning (6am - Noon) - 64% of flight departures
Afternoon (Noon - 6pm) - 36% of flight departures

How long is the flight from Boston to Seattle?

Departing from Boston to Seattle will take you 6h 25m. The distance between Boston and Seattle is about 2502 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Boston to Seattle round-trip?

According to our current data, Spirit Airlines ($190), Sun Country Air ($256), and JetBlue ($267) offers the cheapest pricing from Boston to Seattle. These flights start at 46% 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 $89 on Sun Country Air. Other airlines that offer cheap prices include Alaska Airlines from $122 and Spirit Airlines from $123 one-way.

What are the most popular airlines that fly from Boston to Seattle?

What are the most reliable airlines from Boston to Seattle?

Consider Condor (94%), Air France (94%) or China Eastern (92%) 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 $1,036 for a flight from Boston to Seattle. The cheapest flight overall is $118 while the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl) is currently priced at $190.

What does BOS to SEA mean?

Boston Logan Intl Airport is BOS and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

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.

Fly from Boston to Seattle on these airlines
Choose from the following airlines for your flight from Boston to Seattle. Flights are based on user searches made on Cheapflights and were last updated on February 27, 2024.

Top 7 airlines flying from Boston to Seattle

Discover the top 7 airlines 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 3,397,584 searches. Data last updated February 27, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$117Average$290FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
United AirlinesCheapest$128Average$288FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest$130Average$372FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
JetBlueCheapest$134Average$398FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
DeltaCheapest$139Average$378FlexibilityNo cancel feeOn-timeN/A
Search Delta flights