$422 Cheap Flights from Basel (BSL) to Denver (DEN)

View $422 flight on Wed, Jan 14, 2026Opens in a new window

Popular airlines from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)

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Cheap Flights from Basel to Denver (BSL-DEN)

Prices were available within the past 7 days and start at $422 for one-way flights and $644 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Feb 10 - Tue, Feb 17
BSL
Basel
DEN
Denver
$644 Roundtrip, found 4 days ago
$644
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Feb 10 from Basel to Denver, returning Tue, Feb 17, priced at $644 found 4 days ago
British Airways
Tue, Feb 10 - Tue, Feb 17
BSL
Basel
DEN
Denver
$655 Roundtrip, found 4 days ago
$655
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Feb 10 from Basel to Denver, returning Tue, Feb 17, priced at $655 found 4 days ago
British Airways
Tue, Feb 10 - Tue, Feb 17
BSL
Basel
DEN
Denver
$659 Roundtrip, found 4 days ago
$659
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Feb 10 from Basel to Denver, returning Tue, Feb 17, priced at $659 found 4 days ago
American Airlines
Sun, Dec 14 - Tue, Jan 6
BSL
Basel
DEN
Denver
$675 Roundtrip, found 3 days ago
$675
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Dec 14 from Basel to Denver, returning Tue, Jan 6, priced at $675 found 3 days ago
British Airways
Wed, Jan 14 - Wed, Jan 21
BSL
Basel
DEN
Denver
$678 Roundtrip, just found
$678
Roundtrip
just found
Select British Airways flight, departing Wed, Jan 14 from Basel to Denver, returning Wed, Jan 21, priced at $678 just found
American Airlines
Tue, Dec 16 - Tue, Jan 6
BSL
Basel
DEN
Denver
$685 Roundtrip, found 3 days ago
$685
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 16 from Basel to Denver, returning Tue, Jan 6, priced at $685 found 3 days ago
British Airways
Wed, Jan 14 - Wed, Jan 21
BSL
Basel
DEN
Denver
$688 Roundtrip, just found
$688
Roundtrip
just found
Select British Airways flight, departing Wed, Jan 14 from Basel to Denver, returning Wed, Jan 21, priced at $688 just found
Delta
Wed, Jan 14 - Wed, Jan 21
BSL
Basel
DEN
Denver
$774 Roundtrip, just found
$774
Roundtrip
just found
Select Delta flight, departing Wed, Jan 14 from Basel to Denver, returning Wed, Jan 21, priced at $774 just found
Lufthansa
Mon, Dec 15 - Wed, Dec 31
BSL
Basel
DEN
Denver
$777 Roundtrip, found 4 days ago
$777
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Mon, Dec 15 from Basel to Denver, returning Wed, Dec 31, priced at $777 found 4 days ago
United
Mon, Dec 15 - Mon, Jan 5
BSL
Basel
DEN
Denver
$816 Roundtrip, found 3 days ago
$816
Roundtrip
found 3 days ago
Select United flight, departing Mon, Dec 15 from Basel to Denver, returning Mon, Jan 5, priced at $816 found 3 days ago
Flights from Basel (BSL) to Denver (DEN)
Origin airport
EuroAirport
Destination airport
Denver Intl.
Airlines serving
Austrian Airlines, British Airways, Lufthansa
Roundtrip price
$644
Distance
5104 mi

Basel to Denver Flights

The cheapest times to fly from Basel 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 Basel to Denver are during the month of February. You can find some of the cheapest flights from Basel to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Basel to Denver

Sunday is one of the best days to book for cheap flights from Basel 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 Basel 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 Basel to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $422 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 Basel 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 Basel 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 EuroAirport Airport (BSL) to Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $422 or cheap return flight from $644 from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)?
February is the cheapest month to fly from BSL to DEN. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BSL to DEN flight.
How many flights per day from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)?
You'll need to book a flight with a layover when traveling from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from BSL to DEN?
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 peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)?
To touch down at Denver Intl. Airport (DEN) on schedule, opt for a flight that leaves from EuroAirport Airport (BSL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 EuroAirport Airport (BSL) to Denver Intl. Airport (DEN) last-minute?
Booking your ticket from BSL to DEN shortly before your journey is usually more expensive. But if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a BSL to DEN flight and hotel package?
You can save money by booking a BSL to DEN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred accommodations and flights, consider other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from EuroAirport Airport (BSL) to Denver Intl. Airport (DEN)?
If you booked your BSL to DEN flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.