The displayed fares were last found on: Thu | 21 January 10:07 AM(EST) . Fares are round trip.
The list of round-trip Seattle to Boston flights displayed here were recently found on our flight booking website. The fares are unwarranted as they are dynamic. Airlines may update them as per demand and availability. Your airline ticket fare is inclusive of base fare, fuel surcharges, airline/airport/government taxes, and our service fee. More booking details available with Terms and Conditions.
Search, Compare and Book Seattle to Boston Cheap Tickets
Yes, you head that right! We enable travelers or customers to wisely compare airline ticket cost taking into consideration departure and arrival timing, date and time of departure, season, availability of free checked-in baggage, and much more. From seat-selection to travel insurance to EMI payment options, enjoy all the flexibility to plan your travel. We have also provided OTP (On-Time Performance) rating of airlines to help you with your decision making.
Seattle to Boston Flight Information
Departure Airport in Seattle, WA
Seattle Airport
Official Name: Seattle–Tacoma International Airport (
Airport Code: SEA
Location: 14 miles (23 km) south of Downtown Seattle and 18 miles (29 km) north-northeast of Downtown Tacoma
Quick Facts about SEA: The airport is a hub for Alaska Airlines and Delta Air Lines.
On Time Performance Ranking
Departure: 9 | Arrival: 17
Arrival Airport in Boston
Official Name: Boston Logan International Airport
Airport Code: BOS
Location: Boston International Airport sits mostly in East Boston and partially in Winthrop, Massachusetts, United States
Quick Facts About Boston Airport: The airport serves as the focus city for JetBlue Airways (Low Cost) and American Airlines (Flagship Major airline).
On Time Performance Ranking
Departure: 20 | Arrival: 27
Flight Distance, Time
Flight distance: 2,492 miles (4011 km)
Flight time: 04 hours 45 minutes
Time Difference: Boston is 03 hours ahead
The flight time is calculated by assuming the aircraft speed as 804.67 km or 500 miles per hour. The flight distance is straight aerial distance between the two points. Also, the flight time is only the time spent in the air, i.e., it doesn’t include the take-off and landing times. If there is a technical stop-over or layover, the overall travel time increases further.
Carrier Choices
| Airlines | Carrier Type | Flights by Stop | Connection Airport |
| Alaska (AS) | Mainline | Nonstop | Not required |
| American (AA) | Mainline | 1-Stop | Chicago (ORD) |
| American (AA) | Mainline | 1-Stop | Dallas Fort Worth (DFW) |
| United (UA) | Mainline | 1-Stop | Chicago (ORD) |
| United (UA) | Mainline | 1-Stop | San Francisco (SFO) |
| American (AA) | Mainline | 2-Stop | Dallas Fort Worth (DFW), Washington National (DWA) |
Boston Tourism Season
High
Summer (May to July)
Fall (September to October)
Low
Winter
(January to February)
Shoulder
End of summer (August)
Early spring (March to April)
Frequently Asked Questions
What percentage of departure flights take off on time at Seattle International Airport?
Eighty percent of the total domestic departure flights (21,469k) took off on time at the airport, according to the Bureau of Transportation Statistics, DOT, Govt. of USA. The average delayed minutes equaled 57.24.
What percentage of arrival flights gets delayed at Boston Airport?
In 2019, 26% of the total arrival flights (16,821k) were delayed. The average delayed minutes equaled 78.60. Get in touch with your airline to know the arrival of your flight precisely.
Which is the best airline to fly from Seattle to Boston?
Alaska Airlines (AS) tops the list of carriers operating on this route by on-time performance. The data is sourced from OAG OTP Report (June ’18 – May ’19)
| Airlines | On-Time Flight % | Total Flights |
| Alaska Airlines (AS) | 80.7 | 456,996 |
| American Airlines | 78.9 | 2,320,441 |
| United Airlines | 76.9 | 1,769,122 |
Which airline offers the cheapest fare?
American Airlines. However, it has only connecting flights to Boston from Seattle.
