Overview of all destinations to and from Keflavik Airport. The plan is subject to change.
Information about travel restrictions within the European Union can be found at reopen.europa.eu.
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| Destination | Flight company | Flight time | Country |
| Alicante | Play | 4:45 | Spain |
| Alicante | Icelandair | 4:25 | Spain |
| Amsterdam | Icelandair | 3:20 | The Netherlands |
| Amsterdam | Transavia | 3:15 | The Netherlands |
| Baltimore/Washington | Play | 6:20 | USA |
| Baltimore/Washington | Icelandair | 6:10 | USA |
| Barcelona | Play | 4:30 | Spain |
| Barcelona | Vueling | 4:30 | Spain |
| Berlin | Play | 3:45 | Germany |
| Berlin | Icelandair | 3:40 | Germany |
| Billund | Icelandair | 2:55 | Denmark |
| Birmingham | Jet2.com | 2:50 | UK |
| Boston | Play | 5:45 | USA |
| Boston | Icelandair | 5:30 | USA |
| Bristol | EasyJet | 3:00 | UK |
| Bristol | TUI | 2:50 | UK |
| Brussel | Icelandair | 3:20 | Belgium |
| Budapest | WizzAir | 4:45 | Hungary |
| Chicago | Icelandair | 6:20 | USA |
| Denver | Icelandair | 7:50 | USA |
| Dublin | Play | 2:45 | Ireland |
| Dublin | Icelandair | 2:35 | Ireland |
| Dusseldorf | Eurowings | 3:35 | Þýskaland |
| Edinborg | Easy Jet | 2:20 | UK |
| Faroe Islands | Atlantic Airways | 1:30 | Denmark |
| Frankfurt | Lufthansa | 3:40 | Germany |
| Frankfurt | Icelandair | 3:40 | Germany |
| Gdansk | WizzAir | 3:50 | Polland |
| Genf | Play | 4:00 | Switzerland |
| Glasgow | Icelandair | 2:15 | UK |
| Gran Canaria | Play | 5:50 | Spain |
| Gran Canaria | Icelandair | 5:15 | Spain |
| Helsinki | Finnair | 3:40 | Finland |
| Helsinki | Icelandair | 3:40 | Finland |
| Ilulissat | Icelandair | 3:50 | Greenland |
| Katowice | WizzAir | 4:25 | Polland |
| Copenhagen | Play | 3:25 | Denmark |
| Copenhagen | Icelandair | 3:20 | Denmark |
| Copenhagen | SAS | 3:20 | Denmark |
| Krakow | WizzAir | 4:15 | Polland |
| Kulusuk | Icelandair | 1:50 | Greenland |
| Liverpool | Play | 2:45 | UK |
| London Gatwick | EasyJet | 3:20 | UK |
| London Gatwick | Icelandair | 3:10 | UK |
| London Gatwick | TUI | 3:10 | UK |
| London Heathrow | British Airways | 3:20 | UK |
| London Heathrow | Icelandair | 3:15 | UK |
| London Luton | EasyJet | 3:10 | UK |
| London Luton | WizzAir | 3:10 | UK |
| London Stanstead | Play | 3:10 | UK |
| London Stanstead | Jet2.com | 2:45 | UK |
| Madrid | Play | 4:30 | Spain |
| Manchester | EasyJet | 2:50 | UK |
| Manchester | Icelandair | 2:45 | UK |
| Manchester | Jet2.com | 2:45 | UK |
| Manchester | TUI | 2:50 | UK |
| Milano | EasyJet | 4:25 | Italy |
| Milano | WizzAir | 4:25 | Italy |
| Minneapolis | Icelandair | 6:20 | USA |
| Munchen | Icelandair | 3:50 | Germany |
| New York JFK | Icelandair | 6:00 | USA |
| New York Stewart | Play | 5:40 | USA |
| Newark Liberty | Icelandair | 5:55 | USA |
| Newcastle | Jet2.com | 2:45 | UK |
| Nuuk | Air Greenland | 3:15 | Greenland |
| Nuuk | Icelandair | 3:30 | Greenland |
| Orlando | Icelandair | 7:45 | USA |
| Oslo | Icelandair | 3:00 | Norway |
| Oslo | Norwegian | 2:50 | Norway |
| Oslo | SAS | 2:50 | Norway |
| Paris CDG | Play | 3:35 | France |
| Paris CDG | Icelandair | 3:35 | France |
| Paris ORY | Transavia | 3:40 | France |
| Portland | Icelandair | 7:45 | USA |
| Prag | Play | 3:55 | Czech Republic |
| Raleigh-Durham | Icelandair | 6:30 | USA |
| Riga | Air Baltic | 3:50 | Lithuania |
| Rome | WizzAir | 5:00 | Italy |
| Salzburg | Play | 4:00 | Austria |
| Salzburg | Icelandair | 4:00 | Austria |
| Seattle | Icelandair | 7:50 | USA |
| Stokkholm | Icelandair | 3:10 | Sweden |
| Tenerife | Play | 5:45 | Spain |
| Tenerife | Icelandair | 5:15 | Spain |
| Tenerife | Neos | 5:30 | Spain |
| Toronto | Air Canada | 5:55 | Canada |
| Toronto | Icelandair | 5:55 | Canada |
| Verona | Neos | 4:10 | Italy |
| Vienna | Austrian Airlines | 4:10 | Austria |
| Vienna | WizzAir | 4:30 | Austria |
| Vilnius | WizzAir | 4:20 | Lithuania |
| Warsaw | WizzAir | 4:15 | Polland |
| Washington Dulles | Icelandair | 6:10 | USA |
| Wroclaw | WizzAir | 4:10 | Polland |
| Zurich | Edelweiss | 3:50 | Switzerland |
| Zurich | Icelandair | 3:50 | Switzerland |