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Cheap flights from Boston to Seattle (BOS - SEA) from $129

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 5/8. 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
Apr 30 — May 71
From?
To?
Tue 4/30
Tue 5/7
1 adult, Economy
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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 Wednesday or Tuesday 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 April 25, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$244

One-way from

$138
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 39% potential price drop
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From Boston Logan Intl to Seattle/Tacoma Intl
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One-way flight from Boston Logan Intl to Seattle/Tacoma Intl
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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 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 35% on airfare.

Cheap American Airlines flights from Boston to Seattle

Explore cheap flight options specifically provided by American 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 3,068,701 searches. Data last updated April 25, 2024.
Find some of the cheapest American Airlines flights traveling from Boston to Seattle. Make sure to double check the flight details before booking.
Tue 5/75:30 amBOS - SEA
1 stop8h 38mAmerican Airlines
Tue 5/711:43 pmSEA - BOS
1 stop9h 31mAmerican Airlines
Deal found 4/24$251
Thu 5/23:30 pmBOS - SEA
1 stop8h 56mAmerican Airlines
Wed 5/812:09 pmSEA - BOS
1 stop9h 52mAmerican Airlines
Deal found 4/24$252
Thu 5/24:31 pmBOS - SEA
1 stop10h 28mAmerican Airlines
Sat 5/46:00 amSEA - BOS
1 stop9h 14mAmerican Airlines
Deal found 4/24$253
Thu 5/22:23 pmBOS - SEA
1 stop9h 31mAmerican Airlines
Fri 5/312:59 amSEA - BOS
1 stop9h 33mAmerican Airlines
Deal found 4/24$254
Thu 5/22:23 pmBOS - SEA
1 stop9h 31mAmerican Airlines
Wed 5/81:22 pmSEA - BOS
1 stop7h 33mAmerican Airlines
Deal found 4/25$255
Fri 5/32:23 pmBOS - SEA
1 stop9h 31mAmerican Airlines
Fri 5/312:59 amSEA - BOS
1 stop9h 33mAmerican Airlines
Deal found 4/24$290
Sun 5/52:05 pmBOS - SEA
1 stop10h 21mAmerican Airlines
Mon 5/611:43 pmSEA - BOS
1 stop9h 31mAmerican Airlines
Deal found 4/24$313
Sun 5/52:05 pmBOS - SEA
1 stop10h 21mAmerican Airlines
Fri 5/101:15 amSEA - BOS
1 stop8h 57mAmerican Airlines
Deal found 4/24$315
Sat 5/48:50 amBOS - SEA
1 stop12h 16mAmerican Airlines
Thu 5/911:43 pmSEA - BOS
1 stop9h 31mAmerican Airlines
Deal found 4/25$324

  • 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 $377.80 RT. This price is typically 67% more expensive than other airlines that offer Boston to Seattle flights. When booking this route, the cheapest RT price found was $138. 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 8% more popular than any other airline flying that same route.

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 3,068,701 searches. Data last updated April 25, 2024.
Some of the lowest-priced Spirit Airlines flights we've found at this time heading from Boston to Seattle. Deals frequently update to provide users with more options.
Tue 5/75:05 amBOS - SEA
3 stops30h 40mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$202
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$209
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/24$212
Tue 5/289:44 pmBOS - SEA
3 stops25h 45mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$213
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:35 amSEA - BOS
3 stops35h 20mSpirit Airlines
Deal found 4/24$221
Tue 5/2811:28 amBOS - SEA
2 stops24h 17mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$222
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Mon 5/139:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/23$223
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/25$232
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Mon 5/139:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/24$236

  • 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 53% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $377.95 RT. The cheapest Spirit Airlines flight found for this route was $138. 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 8% more popular than any other airline flying that same route.

Cheap Boston to Seattle flights in April & May 2024

Find cheap flight options from Boston to Seattle specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,068,701 searches. Prices were last updated on April 25, 2024.
The lowest fares we've come across on flights traveling from Boston to Seattle in April and May 2024. Check back soon for alternative fares.
Tue 5/75:05 amBOS - SEA
3 stops30h 40mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$202
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$209
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/24$212
Tue 5/289:44 pmBOS - SEA
3 stops25h 45mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$213
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:35 amSEA - BOS
3 stops35h 20mSpirit Airlines
Deal found 4/24$221
Tue 5/2811:28 amBOS - SEA
2 stops24h 17mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$222
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Mon 5/139:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/23$223
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/25$232
Sat 5/45:27 pmBOS - SEA
Nonstop6h 14mMultiple Airlines
Tue 5/79:19 pmSEA - BOS
2 stops14h 54mMultiple Airlines
Deal found 4/24$234

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 3,068,701 searches. Data last updated April 25, 2024.
The lowest fares we've come across on flights traveling from Boston to Seattle in April and May 2024. Check back soon for alternative fares.
Tue 5/75:05 amBOS - SEA
3 stops30h 40mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$202
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
3 stops23h 15mSpirit Airlines
Deal found 4/25$209
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/24$212
Tue 5/289:44 pmBOS - SEA
3 stops25h 45mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$213
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Tue 5/149:35 amSEA - BOS
3 stops35h 20mSpirit Airlines
Deal found 4/24$221
Tue 5/2811:28 amBOS - SEA
2 stops24h 17mSpirit Airlines
Tue 6/49:40 pmSEA - BOS
2 stops21h 51mSpirit Airlines
Deal found 4/25$222
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Mon 5/139:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/23$223
Tue 5/710:01 amBOS - SEA
2 stops25h 44mSpirit Airlines
Tue 5/149:40 pmSEA - BOS
2 stops14h 33mSpirit Airlines
Deal found 4/25$232
Sat 5/45:27 pmBOS - SEA
Nonstop6h 14mMultiple Airlines
Tue 5/79:19 pmSEA - BOS
2 stops14h 54mMultiple Airlines
Deal found 4/24$234

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 3,068,701 searches. Data last updated April 25, 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.
Tue 5/74:25 pmBOS - SEA
Nonstop6h 05mJetBlue
Wed 5/88:40 pmSEA - BOS
Nonstop5h 29mJetBlue
Deal found 4/23$297
Thu 5/27:35 pmBOS - SEA
Nonstop6h 19mDelta
Wed 5/87:45 amSEA - BOS
Nonstop5h 37mDelta
Deal found 4/24$312
Fri 5/35:27 pmBOS - SEA
Nonstop6h 14mAlaska Airlines
Sun 5/53:39 pmSEA - BOS
Nonstop5h 20mAlaska Airlines
Deal found 4/24$321
Wed 5/226:30 amBOS - SEA
Nonstop6h 17mDelta
Sat 6/110:31 pmSEA - BOS
Nonstop5h 28mDelta
Deal found 4/24$327
Tue 6/46:55 pmBOS - SEA
Nonstop6h 17mDelta
Wed 6/1211:25 pmSEA - BOS
Nonstop5h 27mDelta
Deal found 4/24$342
Fri 5/176:30 amBOS - SEA
Nonstop6h 17mDelta
Sat 5/257:45 amSEA - BOS
Nonstop5h 37mDelta
Deal found 4/25$347
Wed 5/84:25 pmBOS - SEA
Nonstop6h 05mJetBlue
Tue 5/148:40 pmSEA - BOS
Nonstop5h 29mJetBlue
Deal found 4/24$352
Fri 5/176:30 amBOS - SEA
Nonstop6h 17mDelta
Wed 5/227:45 amSEA - BOS
Nonstop5h 37mDelta
Deal found 4/24$362
Sun 5/127:59 pmBOS - SEA
Nonstop6h 14mUndisclosed Carrier
Sat 5/186:30 amSEA - BOS
Nonstop5h 26mUndisclosed Carrier
Deal found 4/24$363

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 3,068,701 searches. Data last updated April 25, 2024.
Book one of these great deals on flights from Boston to Seattle. Tip: verify your flight details before completing your reservation.
Thu 5/27:00 amBOS - SEA
Nonstop6h 15mMultiple Airlines
Tue 5/79:19 pmSEA - BOS
2 stops14h 54mMultiple Airlines
Deal found 4/24$212
Sat 5/45:27 pmBOS - SEA
Nonstop6h 14mMultiple Airlines
Tue 5/79:19 pmSEA - BOS
2 stops14h 54mMultiple Airlines
Deal found 4/24$234
Thu 5/28:50 amBOS - SEA
1 stop9h 38mUnited Airlines
Sat 5/41:00 pmSEA - BOS
1 stop7h 38mUnited Airlines
Deal found 4/24$249
Thu 5/23:30 pmBOS - SEA
1 stop8h 56mAmerican Airlines
Wed 5/812:09 pmSEA - BOS
1 stop9h 52mAmerican Airlines
Deal found 4/24$252
Thu 5/24:31 pmBOS - SEA
1 stop10h 28mAmerican Airlines
Sat 5/46:00 amSEA - BOS
1 stop9h 14mAmerican Airlines
Deal found 4/24$253
Thu 5/22:23 pmBOS - SEA
1 stop9h 31mAmerican Airlines
Fri 5/312:59 amSEA - BOS
1 stop9h 33mAmerican Airlines
Deal found 4/24$254
Thu 5/22:23 pmBOS - SEA
1 stop9h 31mAmerican Airlines
Wed 5/81:22 pmSEA - BOS
1 stop7h 33mAmerican Airlines
Deal found 4/25$255
Thu 5/28:50 amBOS - SEA
1 stop9h 38mUnited Airlines
Tue 5/77:15 amSEA - BOS
2 stops13h 23mUnited Airlines
Deal found 4/23$259
Wed 5/16:01 amBOS - SEA
2 stops12h 22mUnited Airlines
Sat 5/47:15 amSEA - BOS
2 stops13h 23mUnited Airlines
Deal found 4/24$264

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 3,068,701 searches. Data last updated April 25, 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.
Wed 5/84:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Deal found 4/24$129
Wed 6/59:30 amBOS - SEA
2 stops26h 08mSpirit Airlines
Deal found 4/25$133
Fri 5/179:44 pmBOS - SEA
2 stops19h 14mSpirit Airlines
Deal found 4/24$135
Wed 5/294:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Deal found 4/24$137
Thu 6/67:00 amBOS - SEA
2 stops18h 54mMultiple Airlines
Deal found 4/24$138
Fri 5/103:30 pmBOS - SEA
2 stops20h 15mSpirit Airlines
Deal found 4/25$139
Wed 5/224:08 pmBOS - SEA
2 stops19h 37mSpirit Airlines
Deal found 4/24$140
Wed 5/2210:40 amBOS - SEA
3 stops25h 05mSpirit Airlines
Deal found 4/24$141
Tue 5/2111:28 amBOS - SEA
2 stops24h 17mSpirit Airlines
Deal found 4/25$143

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 3,068,701 searches. Data last updated April 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$202 - $370

Route

Depart

Return

Price

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 5/7

3 stops30h 40m

Seattle/Tacoma Intl

Tue 5/14

3 stops23h 15m

$202

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 5/7

2 stops25h 44m

Seattle/Tacoma Intl

Tue 5/14

3 stops23h 15m

$209

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 5/4

Nonstop6h 14m

Seattle/Tacoma Intl

Tue 5/7

2 stops14h 54m

$234

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Thu 5/2

1 stop9h 38m

Seattle/Tacoma Intl

Sat 5/4

1 stop7h 38m

$249

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 5/7

1 stop8h 38m

Seattle/Tacoma Intl

Tue 5/7

1 stop9h 31m

$251

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Tue 5/7

Nonstop6h 05m

Seattle/Tacoma Intl

Wed 5/8

Nonstop5h 29m

$297

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Wed 5/22

Nonstop6h 17m

Seattle/Tacoma Intl

Sat 6/1

Nonstop5h 28m

$327

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Sat 5/25

1 stop11h 34m

Seattle/Tacoma Intl

Tue 5/28

Nonstop5h 25m

$336

Boston Logan IntlSeattle/Tacoma Intl

BOS - SEA

BOSSEA

Boston Logan Intl

Mon 6/3

1 stop9h 59m

Seattle/Tacoma Intl

Tue 6/11

1 stop14h 02m

$370

Flights are sorted by cheapest first

Deals found on 4/25

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 April 21, 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 $137 while a round-trip flight costs $275. Price data was last updated on April 21, 2024.

Currently, December is the cheapest month in which you can book a flight from Boston to Seattle (average of $244). Flying from Boston to Seattle in July is currently the most expensive (average of $408). 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

$288

April

$295

May

$317

June

$407

July

$408

August

$343

September

$278

October

$257

November

$258

December

$244

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 April 25, 2024.
To help decide which airline to fly from Boston to Seattle, see what other customers have to say about American Airlines, Spirit Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Southwest
8.2
Very good
6,173 reviews
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Alaska Airlines
8.1
Very good
9,114 reviews
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Delta
8.1
Very good
10,975 reviews
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

JetBlue
7.6
Good
4,618 reviews
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

United Airlines
7.4
Good
11,234 reviews
Southwest
8.2
Very good
6,173 reviews
Check prices

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.4

Comfort

8.1

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

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 $300 on Cheapflights?

    Yes, there are multiple flights from Boston to Seattle for under $300. The cheapest flight booked recently is on Spirit Airlines for just $202, but on average you can expect to pay $236.

  • 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 $369.

  • 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, Tuesday, Thursday, Friday, Saturday.

  • How popular is this Boston to Seattle flight route?

    Flights from Boston Logan Intl to Seattle/Tacoma Intl have been viewed 73 times in the past calendar month.

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

    21 flight departures from Boston to Seattle per day on average.
    Morning (6am - Noon) - 52% of flight departures
    Afternoon (Noon - 6pm) - 38% of flight departures
    Evening (6pm - Midnight) - 10% of flight departures

  • How long is the flight from Boston to Seattle?

    Departing from Boston to Seattle will take you 8h 38m. 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 ($202), United Airlines ($249), and American Airlines ($251) offers the cheapest pricing from Boston to Seattle. These flights start at 43% 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 $129 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $149 and Sun Country Air from $155 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, American Airlines or Alaska Airlines.

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

    Consider China Eastern (98%), Air France (97%) or Air Tahiti Nui (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 $1,062 for a flight from Boston to Seattle. The cheapest flight overall is $133 while the most popular route, (Boston Logan Intl - Seattle/Tacoma Intl) is currently priced at $177.

  • 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.

  • 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 vacation 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.

  • How recently were the Boston to Seattle flight deals updated?

    The Boston to Seattle flight deals you see on this page were last updated on 4/25.

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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 April 25, 2024.

Delta flights from Boston Logan Intl to Seattle/Tacoma Intl
Alaska Airlines flights from Boston Logan Intl to Seattle/Tacoma Intl
JetBlue flights from Boston Logan Intl to Seattle/Tacoma Intl

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 3,068,701 searches. Data last updated April 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$116Average$293FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
JetBlueCheapest$129Average$380FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Alaska AirlinesCheapest$138Average$378FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$138Average$378FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$138Average$311FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Sun Country AirCheapest$176Average$322FlexibilityNo cancel feeOn-time83%
Search Sun Country Air flights
American AirlinesCheapest$219Average$510FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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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.
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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 April 25, 2024.
20%of flight departuresEarly morningMidnight to 6 am
63%of flight departuresMorning6 am to noon
9%of flight departuresAfternoonNoon to 6 pm
8%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
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 April 25, 2024.
Sunday22daily flights
Monday23daily flights
Tuesday25daily flights
Wednesday21daily flights
Thursday22daily flights
Friday25daily flights
Saturday20daily flights

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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?

Cheapflights helps you find that perfect flight to Seattle from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to Seattle flexibly with Cheapflights today.

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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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