Cheap flights from Seattle to Reykjavik from $655 BFI, SEA → KEF
Boeing Field International Airport (BFI), Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF)
The cheapest return found recently is $655 with Icelandair, 9 Apr 2027 – 16 Apr 2027, found yesterday.
- Cheapest return found recently
- $655, 9 Apr 2027 to 16 Apr 2027
- Usual return price
- $606 to $679
- Cheapest month to fly
- February 2027, return fares from $557 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $606 to $679.
Cheapest return found recently
$655
9 Apr 2027 – 16 Apr 2027 · Icelandair
Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF)
Leaves 7:00 p.m. · Return leaves 7:45 p.m. · 15 h 20 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$655
9 Apr 2027 – 16 Apr 2027 · Icelandair
Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF)
Leaves 7:00 p.m. · Return leaves 7:45 p.m. · 15 h 20 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$655 9 Apr 2027 – 16 Apr 2027found yesterdaySee prices for these dates
$557 9 Feb 2027 – 25 Feb 2027found 3 days agoSee prices for these dates
What have prices looked like?
Over 34 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $557 to $748.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 8 Dec to 9 Apr 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 7-night return fares leaving within 3 days of 9 Apr 2027 to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 8 Dec – 13 Dec | $702 | United Airlines | Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF) | out 2 stops, back 1 stop | found yesterday | See prices for these dates |
| 9 Feb 2027 – 25 Feb 2027 | $557 | Icelandair | Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 9 Apr 2027 – 16 Apr 2027 | $655 | Icelandair | Seattle-Tacoma International Airport (SEA) → Keflavik International Airport (KEF) | out nonstop, back nonstop | found yesterday | See prices for these dates |
Which month looks cheapest?
February 2027 is the cheapest month — from $557.
Airlines on the cheapest dates: Icelandair, United Airlines.
Premium cabin fares from Seattle to Reykjavik
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 9 Apr 2027 – 16 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seattle to Reykjavik?
Return
The cheapest fares were 60 to 89 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (34 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $565 | $557 | Cheapest seen | 9 |
| 90–179 days | $692 | $557 | +23% | 11 |
| 180+ days | $727 | $721 | +29% | 27 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Everett → Reykjavik
34 km from Seattle
$1,100
$445 more than flying from Seattle
8 Dec – 13 Dec · PAE → KEF · out 1 stop, back 1 stop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 9 Apr 2027 – 16 Apr 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Seattle to Reykjavik?
The cheapest return found recently is $655 with Icelandair, 9 Apr 2027 to 16 Apr 2027, found yesterday. The cheapest return we hold, of any age, is $557 with Icelandair, 9 Feb 2027 to 25 Feb 2027, found 3 days ago. The cheapest return fare on each of 3 departure dates is usually $606 to $679.
What is the cheapest month to fly from Seattle to Reykjavik?
February 2027 is the cheapest month for a return, from $557, 9 Feb 2027 to 25 Feb 2027, found 3 days ago.
How far ahead should I book a flight from Seattle to Reykjavik?
In 34 days of prices between 24 Sept and 12 Nov, return fares were cheapest 60 to 89 days before departure.
Is there a direct flight from Seattle to Reykjavik?
Yes, the cheapest nonstop return found recently is $655 with Icelandair, 9 Apr 2027 to 16 Apr 2027, found yesterday.
Which airlines have the cheapest flights from Seattle to Reykjavik?
Between 8 Dec and 9 Apr 2027, Icelandair has the cheapest return on 2 of the 3 departure dates we hold, and United Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work