HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$603+ Cheap flights from Basel EuroAirport Swiss (BSL) to Denver (DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Basel to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Basel to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Basel (BSL) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$610
(American Airlines)

Popular in

September

Cheapest in

February

Average price

$1,057
From Basel EuroAirport Swiss to Denver Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Basel to Denver

Cheapest flights from Basel to Denver
Explore the most affordable flight options available from Basel to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Flysmarter deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:40 amBSL - DEN
1 stop17h 45mBritish Airways
Wed 11/55:25 pmDEN - BSL
1 stop20h 40mBritish Airways
Deal found 9/9$603
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:45 amBSL - DEN
1 stop17h 40mAmerican Airlines
Wed 11/512:26 pmDEN - BSL
2 stops22h 14mAmerican Airlines
Deal found 9/9$610
This British Airways deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:20 pmBSL - DEN
1 stop29h 05mBritish Airways
Wed 11/54:51 pmDEN - BSL
2 stops17h 49mBritish Airways
Deal found 9/9$611
This British Airways deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:25 pmBSL - DEN
1 stop31h 05mBritish Airways
Wed 11/55:25 pmDEN - BSL
1 stop17h 15mBritish Airways
Deal found 9/10$613
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 amBSL - DEN
2 stops22h 27mAmerican Airlines
Thu 11/62:49 pmDEN - BSL
2 stops16h 16mAmerican Airlines
Deal found 9/9$615
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:10 amBSL - DEN
1 stop18h 15mAmerican Airlines
Mon 10/2010:40 amDEN - BSL
2 stops16h 20mAmerican Airlines
Deal found 9/10$616
This British Airways deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:35 amBSL - DEN
2 stops20h 51mBritish Airways
Sun 11/22:49 pmDEN - BSL
2 stops23h 31mBritish Airways
Deal found 9/9$617
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:05 amBSL - DEN
2 stops19h 17mAmerican Airlines
Sat 11/1511:26 amDEN - BSL
2 stops20h 09mAmerican Airlines
Deal found 9/10$625

Cheapflights Fare Finder

 
Customize your flight search to find flights from Basel to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Basel EuroAirport Swiss to Denver that are best for you.

Fly from

Basel

Fly to

Denver

Route

Depart

Return

Price

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 10/22

6:40 am-4:25 pm

1 stop17h 45m

Denver Intl

Wed 11/5

5:25 pm-10:05 pm

1 stop20h 40m

$603

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 10/23

6:10 am-4:25 pm

1 stop18h 15m

Denver Intl

Thu 11/6

12:32 pm-3:05 pm

2 stops18h 33m

$610

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 10/23

6:10 am-4:25 pm

1 stop18h 15m

Denver Intl

Wed 11/5

8:13 am-2:55 pm

2 stops22h 42m

$610

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Tue 10/21

6:45 am-4:25 pm

1 stop17h 40m

Denver Intl

Thu 11/6

5:25 pm-7:05 pm

1 stop17h 40m

$610

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 10/16

6:10 am-4:25 pm

1 stop18h 15m

Denver Intl

Mon 10/20

9:20 am-6:20 pm

2 stops25h 00m

$610

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 10/20

7:20 pm-4:25 pm

1 stop29h 05m

Denver Intl

Fri 11/7

5:25 pm-2:10 pm

1 stop12h 45m

$611

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 10/20

7:20 pm-4:25 pm

1 stop29h 05m

Denver Intl

Sun 11/2

12:26 pm-10:20 pm

2 stops25h 54m

$611

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 10/23

6:10 am-4:25 pm

1 stop18h 15m

Denver Intl

Tue 11/4

5:25 pm-3:05 pm

1 stop13h 40m

$611

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 10/29

6:20 am-4:30 pm

1 stop17h 10m

Denver Intl

Sun 11/2

2:49 pm-10:20 pm

2 stops23h 31m

$611

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 10/20

7:20 pm-4:25 pm

1 stop29h 05m

Denver Intl

Tue 11/4

5:25 pm-3:05 pm

1 stop13h 40m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Basel to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Basel with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Basel to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Basel EuroAirport Swiss to Denver?

    Airlines like British Airways and American Airlines fly from Basel EuroAirport Swiss to Denver in about 17h 45m. The time it takes to get you to your destination can typically vary by up to 30m. The distance from Basel EuroAirport Swiss to Denver is about 5101 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Basel to Denver that include hotel bookings?

    Yes. In addition to deals on Basel to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Basel to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Basel to Denver.

  • Can I find deals for business class flights from Basel to Denver?

    Yes. Cheapflights offers flight deals from Basel to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Basel EuroAirport Swiss to Denver?

    Currently, October is the cheapest month in which you can book a flight from Basel EuroAirport Swiss to Denver (average of $197). Flying from Basel EuroAirport Swiss to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Broomfield
Greeley
Lone Tree
Lakewood
Cripple Creek
Thornton
Silverthorne
Frisco
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.