United Flights from Denver to Reykjavik (KEF)
Everything you need to fly Origin to Destination: timing, airlines, and insider tips.
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Flights from
$510one-way, via Duffel
Seasonal (Summer)
Flown by United
United Airlines offers a convenient seasonal gateway from the Rocky Mountains to the Land of Fire and Ice. Connecting Denver International Airport directly to Keflavik International Airport, this route simplifies travel for Colorado residents looking to explore Iceland's unique volcanic landscapes and the Midnight Sun during the summer months. As a key transatlantic link, it provides a non-stop solution for travelers heading to Northern Europe without the need for East Coast connections.
This seasonal summer route operated by United Airlines provides a direct link between Denver and Reykjavik. Flying the Boeing 767-300ER, the service caters to high demand during the peak Icelandic travel season, offering passengers a non-stop option for transatlantic travel. The flight bridges the gap between the high-altitude hub of Denver and the coastal gateway of Keflavik.
“This route is the only direct connection between the Denver hub and Iceland, saving travelers from connecting through East Coast hubs like Newark or Chicago. It strengthens Denver's position as a major international gateway and provides essential access for seasonal tourism and business between the Rocky Mountain region and Northern Europe.”
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Airline
United
Region
Europe
Aircraft
B767-300ER
Service
Seasonal (Summer)
Airports
Landing and taking off
Departure
Denver International Airport (DEN)
Check-In
Arrive at least 3 hours early as international check-in and security at the Jeppesen Terminal can be busy during the summer travel surge.
Connections
Easily accessible via the A Line commuter train from Union Station in downtown Denver.
Security
Utilize TSA PreCheck or CLEAR if available to navigate the main terminal security lines faster.
Arrival
Keflavik International Airport (KEF)
On Arrival
The airport is located about 45 minutes from Reykjavik city center; it is highly recommended to pre-book your shuttle.
Ground Transport
Flybus and Airport Direct are the primary shuttle services available outside the terminal arrivals hall.
Planning Ahead
Duty-free shopping is available upon arrival; many travelers purchase alcohol here due to high prices in the city.
Booking, timing and fares
Timing & Reliability
Schedule. Evening departures from Denver with morning arrivals in Iceland the following day.
Duration. The flight covers roughly 3,500 miles across the Atlantic Ocean.
Seasonality. Operates from May through September annually.
Time Zones. Reykjavik is 6 hours ahead of Mountain Daylight Time (MDT).
Fares & Booking
Booking Window. High demand during the limited summer window means prices rarely drop last minute.
Cabin Advice. Polaris is highly recommended for the overnight leg to maximize rest before arriving in Iceland.
Peak Pricing. July is typically the most expensive month for this route due to school holidays.
Peak
July and August
Shoulder
May and September
Off-Peak
October through April (Direct route is inactive)
- Book at least 4-6 months in advance for peak summer travel to secure better rates
- Monitor United's fare alerts for seasonal sales which often occur in early spring
- Consider using MileagePlus miles for upgrades to Polaris Business Class for the overnight leg
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Best Time to Fly Origin to Destination
Summer (June-August)
Best for 24-hour daylight, the Midnight Sun, and full access to hiking trails.
Shoulder (May/September)
Lower prices and fewer crowds while the direct flight still operates.
Trip Planning
Who this route suits
Best For
Adventure Seekers
Direct access to glaciers, volcanoes, and waterfalls with no layovers.
Families
Avoids stressful connections with children on a long-haul transatlantic flight.
Connections & Alternatives
Akureyri
Take a quick domestic flight from Reykjavik to see the whale-watching capital in the north.
London or Paris
Iceland is a great stopover point for travelers continuing on to other European capitals.
Travel Tips for the Origin-Destination Route
Good to Know
Visa & Entry
- US citizens do not need a visa for tourist stays under 90 days in Iceland
- Ensure your passport is valid for at least 6 months beyond your planned date of departure
- Iceland is part of the Schengen Area, meaning entry requirements are standardized with much of Europe
Airport Transfers
- Pre-book a rental car if planning to drive the Ring Road as availability is limited in summer
- The Flybus is the most cost-effective way to reach Reykjavik city center for solo travelers
- Private transfers are available and often more economical for larger groups or families
Baggage & Transit
- Icelandic weather is unpredictable; pack layers and a waterproof shell in your carry-on
- If connecting in Denver from another domestic flight, allow at least 90 minutes for transfer
- Standard international baggage rules apply; check your specific fare class for weight limits
Checklist
- Valid Passport with 6 months validity
- Waterproof and windproof rain jacket
- European power adapter (Type C or F)
- Travel insurance with medical coverage for adventure activities
Airlines Flying Origin to Destination
United
Daily during summer peak
Boeing 767-300ER with Polaris Business Class
Common questions
When does United fly from Denver to Reykjavik?
This is a seasonal route operating during the summer months, typically starting in May and ending in September.
What aircraft is used on the DEN-KEF route?
United typically operates the Boeing 767-300ER wide-body aircraft on this transatlantic flight.
How long is the flight from Denver to Iceland?
The flight usually takes around 7 hours and 30 minutes to 8 hours depending on wind conditions and flight path.
Is Iceland part of the Schengen Area?
Yes, Iceland is a Schengen member, meaning standard European entry rules apply for US passport holders.
Does this flight offer Polaris Business Class?
Yes, the B767-300ER used on this route includes United's Polaris Business Class cabin with lie-flat seats.
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