| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 31 | BOS | LHR | 20:23 | 06:30 |
En-Route
|
Track > |
| Oct 30 | BOS | LHR | 20:34 | 06:27 |
Landed
|
Track > |
| Oct 29 | BOS | LHR | 21:21 | 07:30 |
Landed Late
|
Track > |
| Oct 28 | BOS | LHR | 20:26 | 06:22 |
Landed
|
Track > |
| Oct 27 | BOS | LHR | 21:48 | 07:45 |
Delayed
|
Track > |
| Oct 26 | BOS | LHR | 20:09 | 06:10 |
Landed
|
Track > |
| Oct 25 | BOS | LHR | 21:58 | 07:53 |
Delayed
|
Track > |
| Oct 24 | BOS | LHR | 20:11 | 06:13 |
Landed
|
Track > |
| Oct 23 | BOS | LHR | 20:11 | 07:25 |
Landed
|
Track > |
| Oct 22 | BOS | LHR | 20:25 | 07:02 |
Landed
|
Track > |
Finnair Flight AY3778 connects Boston, United States to London, United Kingdom, taking off from Boston Logan International Airport BOS and landing at London Heathrow Airport LHR.
How long is the AY3778 flight from Boston to London?
The average flight time from Boston to London is 5 hours and 35 minutes. The flight distance is 5239 km / 3256 miles and the average flight speed is 946 km/h / 588 mph.
How many AY3778 flights are operated per week?
7 flights per week. The flight AY3778 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Finnair Flight AY3778 Boston to London?
The Airportia On-Time Performance Rating for Finnair Flight AY3778 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight AY3778 arriving at?
Flight AY3778 arrives at London Heathrow Airport (LHR) Terminal 3.
When was the latest AY3778 flight?
The latest flight took off on Sunday, November 1st, 2026 with the flight status being En-Route on 06:30.
How else can the flight AY3778 be referenced as?
This Finnair flight can also be referenced as FIN3778, AY 3778, FIN 3778.
How often is flight AY3778 delayed?
On average, 30% of all AY3778 flights are delayed. The average delay is 42 minutes.
Can I get compensation for my delayed or cancelled AY3778 flight or baggage issues?
If your AY3778 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 AY3778 Flight Tracker above for more details.
Other flights departing from Boston BOS: B61303, AA108, B6561, B61620
Other flights arriving at London LHR: CX237, BA138, AA108, BA228
All flights connecting Boston BOS to London LHR.