Icelandair Flight FI631 Deals & Information (2025/2026)

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Icelandair Flight 631 Route Deals From $430

The cheapest prices found with in the last 7 days for return flights were $520 and $430 for one-way flights to Logan Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 4 - Wed, Nov 12
KEF
Keflavik Intl.
BOS
Logan Intl.
$520 Roundtrip, found 6 days ago
$520
Roundtrip
found 6 days ago
Select Icelandair flight, departing Tue, Nov 4 from Keflavik Intl. to Logan Intl., returning Wed, Nov 12, priced at $520 found 6 days ago

Frequently asked questions

What route does flight number FI631 take?
You’ll be arriving into BOS from Reykjavik Airport (KEF-Keflavik Intl.) if you’ve booked a ticket on flight number FI631. You’ll be in the air for 5 hours and 35 minutes during this trip. What’s more, it conveniently travels non-stop.
How often is FI631 on time?
If you’ve booked tickets with Icelandair flight number FI631 between KEF and BOS, it’s comforting to know that 82% of these services arrive according to schedule. If your plane does happen to be delayed, the average wait time is roughly 1 hour and 3 minutes. This service has a 1.35-star rating.
What kind of plane is on flight number FI631?
The Boeing 767-300 is the type of plane predominantly used for flight FI631. More often than not, this flight sets off from Reykjavík–Keflavík Airport and comes in to land at Logan Intl. Airport.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your FI631 flight with Travelocity, please visit our Customer Service Portal.