Reykjavík (KEF) to Seattle (SEA) flights
Icelandair, Alaska Airlines fly nonstop from Keflavik International Airport to Seattle-Tacoma International Airport, with about 27 flights a week in July 2026. The 3,622-mile flight takes about 41m gate to gate.
From
KEF
Reykjavík
Keflavik International Airport
To
SEA
Seattle
Seattle-Tacoma International Airport
- Distance
- 3,622 mi · 5,829 km
- Flight time
- 41m
- Airlines
- 2
- Seats filled
- 83%
Flights a week, July 2026
734 flights and 106,113 passengers in 12 months
Airlines flying KEF to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Icelandair | 20 | Boeing 737 MAX 8, Airbus A321, Boeing 757-200 | 98,127 | 0m |
| Alaska Airlines | 7 | Boeing 737 MAX 8 | 7,986 | 7h 54m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 92 | 14,428 | |
| September 2025 | 74 | 11,786 | |
| October 2025 | 54 | 9,148 | |
| November 2025 | 30 | 5,032 | |
| December 2025 | 31 | 5,191 | |
| January 2026 | 31 | 4,930 | |
| February 2026 | 28 | 4,223 | |
| March 2026 | 35 | 5,654 | |
| April 2026 | 58 | 7,550 | |
| May 2026 | 70 | 8,412 | |
| June 2026 | 113 | 13,218 | |
| July 2026 | 120 | 16,952 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.