$587 Cheap Flights from Oslo (OSL) to Denver (DEN)

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Oslo to Denver Flights

The cheapest times to fly from Oslo to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Oslo to Denver are during the month of April. You can find some of the cheapest flights from Oslo to Denver with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Oslo to Denver

Sunday is one of the best days to book for cheap flights from Oslo to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Oslo to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Oslo to Denver in 2026. You can also book with separate airlines for your outbound and return journeys, from $587 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Oslo to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Oslo to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently Asked Questions

How much does a flight from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) cost?

You can find cheap one-way flights from $587 and cheap return flights $807 Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights usually range from $695 to $6286, and return flights typically cost between $1097 and $7574. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.

*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

What is the cheapest month to fly from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

The cheapest month to fly from OSL to DEN is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.

Which airlines fly direct from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

Enter OSL to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

What is the cheapest airline that flies from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

Turkish Airlines is one of the cheapest airlines offering connecting flights from Gardermoen (OSL) to Denver Intl. (DEN), with round-trip tickets starting from around $1,229. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

*Prices based on flights available on Expedia in the last year.

How do I find cheap flights from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

To find a cheap flight from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

What is the best time to fly from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

What is the earliest flight from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

The earliest flight from Gardermoen Airport (OSL) in Oslo to Denver International Airport (DEN) typically leaves at around 5:35 AM, operated by Helvetic Airways, Swiss International Air Lines, and United. This seasonal service is available in June, making it a great choice for early travelers heading to the Rockies. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

What are the most popular departure times for flights from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

The most popular departure times for flights from Oslo (OSL) to Denver, CO (DEN) are from 6am to 9am. About 64% of passengers prefer this time window. Many major carriers, including British Airways, Lufthansa and United Airlines, offer flights during this window. This timing is popular because it allows you to start your day early and arrive in Denver with plenty of time to enjoy your destination.

How long does it take to fly from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

Flying from OSL to DEN with a connection usually takes about 15 hours, traveling roughly 4,632 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Can you fly business or first class from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

You can fly business class between OSL and DEN. Airlines that offer business class service on this route include:

• Lufthansa
• British Airways
• Brussels Airlines
• SAS
• Finnair
• Icelandair
• Air France
• Swiss International Air Lines
• KLM
• Turkish Airlines

How do I earn miles on a Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) flight with Expedia?

It's easy to earn miles on a Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

What airports do you fly into for Denver from Gardermoen (OSL)?

From Gardermoen (OSL), you can fly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like Schiphol (AMS), Frankfurt Intl. (FRA), Heathrow (LHR) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Is it cheaper to buy a plane ticket from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) at the last minute?

Typically, booking a last minute flight from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Is it cheaper to book a Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) flight and hotel package?

Securing a Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Can I cancel or change the date of my flight from Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.)?

If you booked your Oslo (OSL-Gardermoen) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.