Icelandair Flight 521 Deals & Information (2026/2027)

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Icelandair Flight 521 Route Deals From $360

The cheapest prices found with in the last 7 days for return flights were $404 and $360 for one-way flights to Keflavik Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jan 12 - Wed, Jan 20
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$404 Roundtrip, found 5 days ago
$404
Roundtrip
found 5 days ago
Select Icelandair flight, departing Tue, Jan 12 from Frankfurt Intl. to Keflavik Intl., returning Wed, Jan 20, priced at $404 found 5 days ago
Mon, Jun 1 - Thu, Mar 18
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$416 Roundtrip, found 2 days ago
$416
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Jun 1 from Frankfurt Intl. to Keflavik Intl., returning Thu, Mar 18, priced at $416 found 2 days ago
Mon, Jun 1 - Sun, Mar 14
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$428 Roundtrip, found 2 days ago
$428
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Jun 1 from Frankfurt Intl. to Keflavik Intl., returning Sun, Mar 14, priced at $428 found 2 days ago
Sun, Aug 23 - Mon, Aug 31
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$468 Roundtrip, found 21 hours ago
$468
Roundtrip
found 21 hours ago
Select Icelandair flight, departing Sun, Aug 23 from Frankfurt Intl. to Keflavik Intl., returning Mon, Aug 31, priced at $468 found 21 hours ago
Mon, Jun 1 - Sun, Mar 14
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$472 Roundtrip, found 2 days ago
$472
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Jun 1 from Frankfurt Intl. to Keflavik Intl., returning Sun, Mar 14, priced at $472 found 2 days ago
Tue, Jan 12 - Wed, Jan 20
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$481 Roundtrip, found 5 days ago
$481
Roundtrip
found 5 days ago
Select Icelandair flight, departing Tue, Jan 12 from Frankfurt Intl. to Keflavik Intl., returning Wed, Jan 20, priced at $481 found 5 days ago
Fri, Jun 19 - Wed, Jul 1
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$483 Roundtrip, found 4 days ago
$483
Roundtrip
found 4 days ago
Select Icelandair flight, departing Fri, Jun 19 from Frankfurt Intl. to Keflavik Intl., returning Wed, Jul 1, priced at $483 found 4 days ago
Mon, Jun 8 - Mon, Jun 15
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$497 Roundtrip, found 6 days ago
$497
Roundtrip
found 6 days ago
Select Icelandair flight, departing Mon, Jun 8 from Frankfurt Intl. to Keflavik Intl., returning Mon, Jun 15, priced at $497 found 6 days ago
Mon, Mar 22 - Fri, Mar 26
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$498 Roundtrip, found 1 day ago
$498
Roundtrip
found 1 day ago
Select Icelandair flight, departing Mon, Mar 22 from Frankfurt Intl. to Keflavik Intl., returning Fri, Mar 26, priced at $498 found 1 day ago
Mon, Jun 1 - Thu, Nov 19
FRA
Frankfurt Intl.
KEF
Keflavik Intl.
$500 Roundtrip, found 2 days ago
$500
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Jun 1 from Frankfurt Intl. to Keflavik Intl., returning Thu, Nov 19, priced at $500 found 2 days ago

Frequently asked questions

What route does flight number FI521 take?
You'll be touching down at Keflavik Intl. Airport (KEF) from FRA if you're traveling on flight number FI521. You'll be in the sky for 3 hours and 35 minutes on this trip. What's more, the flight conveniently travels non-stop.
How often is FI521 on time?
About 100% of FI521 flights head off on time — so if you're flying between Frankfurt am Main Airport and Keflavik Intl. Airport (KEF), you can kick back knowing that you will get where you need to as quickly as possible. In the rare event that your Icelandair trip encounters a delay, the average wait is about 7 minutes. Thanks to the airline's first-rate service, this route has a star rating of 4.
What terminal does FI521 fly out of?
You'll likely be climbing aboard the plane at Terminal 2 if you're flying on FI521 direct from Frankfurt Intl. Airport (FRA) to Reykjavík–Keflavík Airport.
What kind of plane is on flight number FI521?
The route for flight number FI521 is nearly always Frankfurt Intl. Airport (FRA) to Reykjavík–Keflavík Airport, and the Boeing 767-300 is the type of plane you're likely to be flying with.
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 FI521 flight with Travelocity, please visit our Customer Service Portal.