--- title: "Reykjavik (KEF) to Seattle (SEA) flights: who flies it" description: "Alaska Airlines and Icelandair fly nonstop from KEF to SEA, about 8 flights a week, covering 3,611 miles. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/kef-sea" url: "https://2lnr.com/routes/kef-sea.md" date_modified: "2026-10-18T05:10:47Z" --- # Reykjavik to Seattle (KEF-SEA): nonstop upgrade & award space Icelandair and Alaska Airlines fly the KEF to SEA nonstop about 8 times a week. The timetable below shows the nonstop scheduled at 7h 55m to 8h 5m for the 3,611 miles. 2LNR checks confirmed upgrade and award space on Alaska Airlines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 24, 2026. See KEF to SEA on the interactive map [Get started free](https://2lnr.com/login) 8 Flights a week, 4-week average 7h 55m to 8h 5m Scheduled flight time 3,611 mi Nonstop distance Free To get started ## Reykjavik to Seattle flight schedule Scheduled nonstop departures for KEF to SEA starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Reykjavik (KEF) to Seattle (SEA) | Date | Flight | Airline | Departs KEF | Arrives SEA | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | FI 681 | Icelandair | 16:50 | 17:55 | 8h 5m | [Airbus A321neo family](https://2lnr.com/seatmaps/fi/a321neo.md) | | Fri, Oct 23 | FI 683 | Icelandair | 19:45 | 20:40 | 7h 55m | Airbus A321neo family | | Sat, Oct 24 | FI 681 | Icelandair | 16:50 | 17:55 | 8h 5m | Airbus A321neo family | | Sat, Oct 24 | FI 683 | Icelandair | 19:45 | 20:40 | 7h 55m | Airbus A321neo family | | Sun, Oct 25 | FI 681 | Icelandair | 17:00 | 18:00 | 8h | Airbus A321neo family | | Sun, Oct 25 | FI 683 | Icelandair | 19:45 | 20:40 | 7h 55m | Airbus A321neo family | | Mon, Oct 26 | FI 681 | Icelandair | 17:00 | 18:00 | 8h | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/fi/737-max-8.md) | | Tue, Oct 27 | FI 681 | Icelandair | 17:00 | 18:00 | 8h | Airbus A321neo family | | Wed, Oct 28 | FI 681 | Icelandair | 17:00 | 18:00 | 8h | Boeing 737 MAX 8 | | Thu, Oct 29 | FI 681 | Icelandair | 17:00 | 18:00 | 8h | Airbus A321neo family | Showing all 10 scheduled KEF to SEA departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every KEF to SEA date on the interactive map ## Aircraft on the Reykjavik to Seattle nonstop Icelandair flies the departures in the schedule table on this page with the [Airbus A321neo family](https://2lnr.com/seatmaps/fi/a321neo.md) and the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/fi/737-max-8.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on KEF to SEA departures 2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Reykjavik to Seattle to see which departures have space, the next 14 days free on every product and the full horizon on Pro. ### See real availability Confirmed upgrade or award seats by date on the KEF to SEA departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See KEF to SEA on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Reykjavik to Seattle nonstop Carriers operating KEF to SEA nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [Icelandair (FI) route map](https://2lnr.com/routes/airlines/fi.md)\ [The aircraft FI flies](https://2lnr.com/seatmaps/fi.md) - [Alaska Airlines (AS) route map](https://2lnr.com/routes/airlines/as.md)\ [The aircraft AS flies](https://2lnr.com/seatmaps/as.md) See KEF to SEA on the interactive map → ## Frequently asked questions about KEF to SEA **How long is the flight from Reykjavik (KEF) to Seattle (SEA)?** Scheduled flight times from Reykjavik (KEF) to Seattle (SEA) run from 7h 55m to 8h 5m across the departures in the schedule table on this page. The nonstop covers about 3,611 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from KEF to SEA?** Icelandair and Alaska Airlines fly KEF to SEA nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines. **How many flights a week are there from KEF to SEA?** About 8 nonstop flights a week run between Reykjavik (KEF) and Seattle (SEA) in the current schedule, operated by Icelandair and Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from KEF to SEA depart?** Scheduled KEF to SEA nonstops in the next 7 days with service leave between 16:50 and 19:45, local time at Reykjavik. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate KEF to SEA nonstop?** In the schedule table on this page, KEF to SEA nonstops fly as FI 681 and FI 683 on Icelandair. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on KEF to SEA?** Open the KEF to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [SEA to KEF upgrade and award space](https://2lnr.com/routes/sea-kef.md). Award seats rather than schedules? See [Alaska Airlines award availability](https://2lnr.com/awards/as.md). Looking beyond this route? See [every route from Reykjavik (KEF)](https://2lnr.com/routes/kef.md), or [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md). Nonstops from Reykjavik (KEF) to other airports within 150 miles of Seattle (SEA): - [Reykjavik (KEF) to Vancouver (YVR)](https://2lnr.com/routes/kef-yvr.md), 127 miles from SEA - [Reykjavik (KEF) to Portland (PDX)](https://2lnr.com/routes/kef-pdx.md), 129 miles from SEA Distances are great-circle between the airports, not driving distance. - [How Alaska upgrades clear](https://2lnr.com/about/as/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss KEF to SEA upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)