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Cheap Flights from Seattle to Boston (BOS)
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1 Passenger
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Adults 18+
Children 2-11
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Average price per month
- Low Season: April
- High Season: July
- Prices for this route are volatile and fluctuate from month to month.
- The cheapest flights are usually bought in April, December and January.
- High season months are November, September and July. However, it's not the rule and you should always search current flight deals.
- For example, the flight from Seattle to Boston is currently 29% cheaper than average.
Price increase as travel date approaches
- Flight prices for this route increase by 49% if you book last minute. Hover on the graph above to see for yourself!.
- To grab the lowest price possible, you should buy your flight around 32 days before departure!
- Consider booking at least 16 days before departure to increase your chances of getting a low price.
- Generally, it's safe to book between 90 and 60 days in advance.
Seattle to Boston Flight Information
| Flights Depart From | Seattle (SEA) |
| Flights Arriving To | Boston (BOS) |
| Distance | 4005 km |
| Current Discount | 29 % |
| Average Price | $342.75 |
| Good Deal | $214.28 |
| Cheapest Airlines | JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, American Airlines, United Airlines |
| Popular Airlines | JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Sun Country Airlines, American Airlines, United Airlines |
| Flight Duration | 05 hours 20 minutes |
| Flights Depart From |
| Seattle (SEA) |
| Flights Arrive In |
| Boston (BOS) |
| Distance |
| 4005 km |
| Flight Duration |
| 05 hours 20 minutes |
| Current Discount |
| 29 % |
| Average Price |
| $342.75 |
| Good Deal |
| $214.28 |
| Cheapest Airlines |
| JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, American Airlines, United Airlines |
| Popular Airlines |
| JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Sun Country Airlines, American Airlines, United Airlines |
Most Reliable Airlines flying to Boston
- According to our data, JetBlue, Alaska Airlines and Delta Air Lines have the highest overall rating.
- The following airlines have the highest chance of on time arrivals: Alaska Airlines, Delta Air Lines and American Airlines.
- If legroom is important for you then you should consider flying with JetBlue, Alaska Airlines and American Airlines.
| Airline | Overall Rating | On time arrival | Check-in & Boarding | Cleanliness | Customer Service | Food & Beverage | Entertainment | Legroom | Seat Comfort |
|---|---|---|---|---|---|---|---|---|---|
JetBlue |
4.2 | 4.0 | 4.5 | 4.5 | 4.0 | 4.0 | 4.0 | 4.5 | 4.0 |
Alaska Airlines |
4.1 | 4.5 | 4.5 | 4.5 | 4.5 | 3.5 | 3.5 | 4.0 | 4.0 |
Delta Air Lines |
3.8 | 4.5 | 4.0 | 4.0 | 4.0 | 3.5 | 4.0 | 3.5 | 3.5 |
Hawaiian Airlines |
3.8 | - | 4.0 | 4.0 | 4.0 | 3.5 | 3.5 | 4.0 | 3.5 |
Sun Country Airlines |
3.5 | - | 4.0 | 4.0 | 4.0 | 3.0 | 2.5 | 3.5 | 3.5 |
American Airlines |
3.3 | 4.0 | 3.5 | 3.5 | 3.5 | 3.0 | 3.0 | 3.5 | 3.0 |
United Airlines |
3.3 | 4.0 | 3.5 | 3.5 | 3.5 | 3.0 | 3.0 | 3.0 | 3.0 |
Overall Rating
4.0
On time arrival
4.0
Check-in & Boarding
4.5
Cleanliness
4.5
Customer Service
4.0
Food & Beverage
4.0
Entertainment
4.0
Legroom
4.5
Seat Comfort
4.0
Overall Rating
4.0
On time arrival
4.5
Check-in & Boarding
4.5
Cleanliness
4.5
Customer Service
4.5
Food & Beverage
3.5
Entertainment
3.5
Legroom
4.0
Seat Comfort
4.0
Overall Rating
4.0
On time arrival
4.5
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.5
Entertainment
4.0
Legroom
3.5
Seat Comfort
3.5
Overall Rating
4.0
On time arrival
-
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.5
Entertainment
3.5
Legroom
4.0
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
-
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.0
Entertainment
2.5
Legroom
3.5
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.5
Seat Comfort
3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.0
Seat Comfort
3.0
Good to know:
- Logan International is the major airport in Boston and surrounding area.
Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boston flight deals.
Track the flight prices from Seattle to Boston by subscribing to Fare Alerts to never miss the best deals possible.
Did you know that you could find even better deals when you use our Mobile App?. How to get the cheapest flight to Boston?
Currently there is a 29% discount on flights to Boston. This price won't stay too long and you should consider buying now.
Awesome Deals
notifications_active In the past few days the following airlines offered the lowest prices from Seattle to Boston: JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, American Airlines and United Airlines..
JetBlueThu, 21 Aug SEA BOS
Mon, 25 Aug BOS SEA Trip duration: 4 days$196.97
Alaska AirlinesSat, 13 Sep SEA BOS
Tue, 16 Sep BOS SEA Trip duration: 3 days$216.6
JetBlueWed, 08 Oct SEA BOS
Sun, 12 Oct BOS SEA Trip duration: 4 days$216.96
JetBlueFri, 17 Oct SEA BOS
Mon, 27 Oct BOS SEA Trip duration: 10 days$216.96
Delta Air LinesWed, 29 Oct SEA BOS
Mon, 03 Nov BOS SEA Trip duration: 6 days$216.96
Hawaiian AirlinesFri, 03 Oct SEA BOS
Tue, 14 Oct BOS SEA Trip duration: 11 days$226.59
American AirlinesWed, 27 Aug SEA BOS
Sun, 07 Sep BOS SEA Trip duration: 11 days$236.48
Alaska AirlinesSat, 11 Oct SEA BOS
Fri, 17 Oct BOS SEA Trip duration: 6 days$236.78
JetBlueThu, 07 Aug SEA BOS
Wed, 13 Aug BOS SEA Trip duration: 6 days$246.97
United AirlinesThu, 07 Aug SEA BOS
Sat, 16 Aug BOS SEA Trip duration: 9 days$256.37
JetBlueFri, 01 Aug SEA BOS
Sun, 10 Aug BOS SEA Trip duration: 9 days$271.96
JetBlueWed, 30 Jul SEA BOS
Mon, 04 Aug BOS SEA Trip duration: 5 days$276.97
Alaska AirlinesThu, 14 Aug SEA BOS
Sun, 17 Aug BOS SEA Trip duration: 3 days$296.18
United AirlinesFri, 15 Aug SEA BOS
Fri, 15 Aug BOS SEA Trip duration: 0 days$296.38
United AirlinesWed, 23 Jul SEA BOS
Sat, 02 Aug BOS SEA Trip duration: 10 days$327.5
JetBlueFri, 01 Aug SEA BOS
Sun, 03 Aug BOS SEA Trip duration: 2 days$356.97
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Frequently Asked Questions
- How long is a direct flight from Seattle to Boston?A direct flight from Seattle to Boston takes roughly 05 hours 20 minutes.
- How many direct flights are there between Seattle to Boston daily?On average, there are 34 direct flights from Seattle to Boston each day.
- Which airlines offer cheap airfare from Seattle to Boston?That may change at any time. But in the past 14 days, the cheapest tickets we've found were with JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, American Airlines and United Airlines.
- Do I need my passport to fly from Seattle to Boston?Nope, not this time.
- Which airlines fly from Seattle to Boston most often?JetBlue, Alaska Airlines, Delta Air Lines, Hawaiian Airlines, Sun Country Airlines, American Airlines and United Airlines are the top.
- What's the cheapest day to fly from Seattle to Boston?That depends. Recently, the cheapest day to fly from Seattle to Boston has been Saturday. And the cheapest return flight from Wednesday has been. That said, the cheapest departure days are constantly changing.
- Which airport will I be flying from in Seattle?When departing from Seattle you'll be flying out of Seattle-Tacoma International.
- Which airport will I be flying from in Boston?When departing from Boston you'll be flying out of Logan International.
- How is Justfly.com so good at finding cheap flights?We've taken an oath of secrecy and vowed never to say. Just kidding. Our team and technology allows us to browse through hundreds of airlines and hundreds of thousands of flights to find the lowest prices. Then we pass the savings on to you.
- Can Justfly.com help me save money in any other way?We're glad you asked. We help you save money with our Fare Alerts, Price Trend charts and multi-ticket bookings. We also help you save on hotels and car rentals.
- How many airlines does Justfly.com search to find affordable flights?We typically search over 400 airlines.
- Can Justfly.com's Price Trend tool really tell me the best time to buy tickets?Absolutely! That's why we've made it accessible to you.
- Will the price of my flight change?Flight prices and availability change often. To counter this, we update the important data as often as possible every step of the way.
- How will I receive my booking confirmation and travel information?We'll send you an email with the important details!
- Can you cancel or change Justfly.com flights?You sure can. But give us a call first. We'll do our best to find a solution. However, in some cases, if we cancel your booking, we'll have to charge an administrative fee of $75 (domestic), $125 (trans-border between Canada and USA) and $200 (international).
- Are Justfly.com's tickets refundable?All bookings are currently non-refundable.
- How do I contact Justfly.com?To find answers to all of your questions, click here to visit our support page.