$488 Cheap Flights from Boise (BOI) to Copenhagen (CPH)

View $488 flight on Sun, Aug 17, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Boise to Copenhagen (BOI-CPH)

Prices were available within the past 7 days and start at $488 for one-way flights and $673 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$673 Roundtrip, found 3 hours ago
$673
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $673 found 3 hours ago
United
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$673 Roundtrip, found 3 hours ago
$673
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $673 found 3 hours ago
United
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$673 Roundtrip, found 3 hours ago
$673
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $673 found 3 hours ago
Delta
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$677 Roundtrip, found 3 hours ago
$677
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $677 found 3 hours ago
Air Canada
Sun, Aug 17 - Tue, Aug 26
BOI
Boise
CPH
Copenhagen
$679 Roundtrip, found 1 hour ago
$679
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Sun, Aug 17 from Boise to Copenhagen, returning Tue, Aug 26, priced at $679 found 1 hour ago
Air Canada
Mon, Aug 4 - Tue, Aug 19
BOI
Boise
CPH
Copenhagen
$685 Roundtrip, found 3 hours ago
$685
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, Aug 4 from Boise to Copenhagen, returning Tue, Aug 19, priced at $685 found 3 hours ago
Air Canada
Wed, Aug 13 - Fri, Aug 22
BOI
Boise
CPH
Copenhagen
$686 Roundtrip, found 5 hours ago
$686
Roundtrip
found 5 hours ago
Select Air Canada flight, departing Wed, Aug 13 from Boise to Copenhagen, returning Fri, Aug 22, priced at $686 found 5 hours ago
Delta
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$691 Roundtrip, found 3 hours ago
$691
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $691 found 3 hours ago
American Airlines
Tue, Aug 5 - Wed, Aug 20
BOI
Boise
CPH
Copenhagen
$702 Roundtrip, found 3 hours ago
$702
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Aug 5 from Boise to Copenhagen, returning Wed, Aug 20, priced at $702 found 3 hours ago
Virgin Atlantic
Tue, Sep 9 - Wed, Oct 1
BOI
Boise
CPH
Copenhagen
$724 Roundtrip, found 3 days ago
$724
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Tue, Sep 9 from Boise to Copenhagen, returning Wed, Oct 1, priced at $724 found 3 days ago
Flights from Boise (BOI) to Copenhagen (CPH)
Origin airport
Boise
Destination airport
Kastrup
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, United, Virgin Atlantic
Roundtrip price
$672
Distance
4961 mi

Boise to Copenhagen Flights

The cheapest times to fly from Boise to Copenhagen

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 Boise to Copenhagen are during the month of August. You can find some of the cheapest flights from Boise to Copenhagen with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Copenhagen

Sunday is one of the best days to book for cheap flights from Boise to Copenhagen: 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 Boise to Copenhagen

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 Boise to Copenhagen in 2025. You can also book with separate airlines for your outbound and return journeys, from $488 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 Boise to Copenhagen 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 Boise to Copenhagen 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 Boise Airport (BOI) to Kastrup Airport (CPH) cost?
Discover the latest flight deals from BOI to CPH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOI to CPH?
The cheapest flights from BOI to CPH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOI to CPH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from BOI to CPH. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Boise Airport (BOI) to Kastrup Airport (CPH)?
There aren’t any daily nonstop flights from Boise Airport (BOI) to Kastrup Airport (CPH). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be soaring above the clouds in no time.
What day of the week has the most flights from BOI to CPH?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Kastrup Airport (CPH)?
Choose a flight from Boise Airport (BOI) to Kastrup Airport (CPH) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Kastrup Airport (CPH) last-minute?
Last-minute bookings from BOI to CPH are typically more expensive. To lock in the lowest prices, start looking for flights well in advance. That said, if you can play around with your travel dates, it’s possible to find a cheap fare just before your departure.
Is it cheaper to book a BOI to CPH flight and hotel package?
You’ll generally save money by booking a BOI to CPH flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. After choosing your ideal accommodations and flights, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Kastrup Airport (CPH)?
In most cases, you can reschedule or cancel your BOI to CPH flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline’s guidelines and fees on flight changes, or if you want further information, head to our Customer Service portal.

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*Available to One Key members.