| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 15 | SEA | BOS | 00:22 | 08:16 |
En-Route
|
Track > |
| Oct 14 | SEA | BOS | 00:13 | 07:48 |
Landed
|
Track > |
| Oct 13 | SEA | BOS | 00:40 | 08:13 |
Landed
|
Track > |
| Oct 12 | SEA | BOS | 00:28 | 08:13 |
Landed
|
Track > |
| Oct 11 | SEA | BOS | 00:17 | 08:10 |
Landed
|
Track > |
| Oct 10 | SEA | BOS | 23:58 | 07:45 |
Landed
|
Track > |
| Oct 09 | SEA | BOS | 01:39 | 09:27 |
Delayed
|
Track > |
| Oct 08 | SEA | BOS | 00:23 | 07:54 |
Landed
|
Track > |
| Oct 07 | SEA | BOS | 23:48 | 07:10 |
Landed
|
Track > |
| Oct 06 | SEA | BOS | 23:56 | 07:26 |
Landed
|
Track > |
TAP Portugal Flight TP4478 connects Seattle, United States to Boston, United States, taking off from Seattle Tacoma International Airport SEA and landing at Boston Logan International Airport BOS.
How long is the TP4478 flight from Seattle to Boston?
The average flight time from Seattle to Boston is 4 hours and 38 minutes. The flight distance is 4005 km / 2489 miles and the average flight speed is 853 km/h / 530 mph.
How many TP4478 flights are operated per week?
7 flights per week. The flight TP4478 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of TAP Portugal Flight TP4478 Seattle to Boston?
The Airportia On-Time Performance Rating for TAP Portugal Flight TP4478 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight TP4478 arriving at?
Flight TP4478 arrives at Boston Logan International Airport (BOS) Terminal C.
When was the latest TP4478 flight?
The latest flight took off on Friday, October 16th, 2026 with the flight status being En-Route on 08:16.
How else can the flight TP4478 be referenced as?
This TAP Portugal flight can also be referenced as TAP4478, TP 4478, TAP 4478.
How often is flight TP4478 delayed?
On average, 10% of all TP4478 flights are delayed. The average delay is 71 minutes.
Can I get compensation for my delayed or cancelled TP4478 flight or baggage issues?
If your TP4478 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our TP4478 Flight Tracker above for more details.
Other flights departing from Seattle SEA: DL953, B6398, AA2379, DL652
Other flights arriving at Boston BOS: UA1665, AA2453, B6398, YX5793
All flights connecting Seattle SEA to Boston BOS.
