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$626+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$626
(American Airlines)

Popular in

September

Cheapest in

February

Average price

$952
From Basel EuroAirport Swiss to Denver Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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
Thu 10/2312:29 pmDEN - BSL
2 stops14h 26mAmerican Airlines
Deal found 7/30$626
This British Airways deal was found by Cheapflights users on 7/30. 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.
Wed 10/157:15 pmBSL - DEN
1 stop29h 10mBritish Airways
Thu 10/236:35 pmDEN - BSL
1 stop20h 15mBritish Airways
Deal found 7/30$627
This Billigflug deal was found by Cheapflights users on 7/29. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:10 amBSL - DEN
2 stops20h 23mMultiple Airlines
Thu 9/186:59 pmDEN - BSL
2 stops19h 51mMultiple Airlines
Deal found 7/29$643
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:30 amBSL - DEN
2 stops32h 09mUnited Airlines
Sat 9/203:50 pmDEN - BSL
2 stops19h 45mUnited Airlines
Deal found 7/30$717
This deal was found by Cheapflights users on 7/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2511:30 amBSL - DEN
1 stop12h 05mLufthansa
Wed 9/104:15 pmDEN - BSL
1 stop12h 10mLufthansa
Deal found 7/30$736
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/510:10 amBSL - DEN
1 stop13h 20mDelta
Sat 8/162:00 pmDEN - BSL
2 stops16h 50mDelta
Deal found 7/30$1,051

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 July 30, 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

Thu 10/16

6:10 am-4:25 pm

1 stop18h 15m

Denver Intl

Thu 10/23

12:29 pm-10:55 am

2 stops14h 26m

$626

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 10/15

7:15 pm-4:25 pm

1 stop29h 10m

Denver Intl

Thu 10/23

6:35 pm-10:50 pm

1 stop20h 15m

$627

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 9/11

6:10 am-6:33 pm

2 stops20h 23m

Denver Intl

Thu 9/18

6:59 pm-10:50 pm

2 stops19h 51m

$643

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sat 9/13

11:30 am-11:39 am

2 stops32h 09m

Denver Intl

Sat 9/20

3:50 pm-7:35 pm

2 stops19h 45m

$717

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 8/25

11:30 am-3:35 pm

1 stop12h 05m

Denver Intl

Wed 9/10

4:15 pm-12:25 pm

1 stop12h 10m

$736

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sun 9/14

11:05 am-4:25 pm

1 stop13h 20m

$796

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 8/20

10:20 am-6:35 pm

2 stops16h 15m

$835

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 9/18

9:45 am-6:40 pm

1 stop16h 55m

$1,590

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sat 9/13

11:30 am-3:35 pm

1 stop12h 05m

$3,768

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 30, 2025.
Read through reviews of airlines operating flights from Basel EuroAirport Swiss to Denver, such as Austrian Airlines, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
823 reviews
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,896 reviews
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Lufthansa
6.8
Okay
7,269 reviews
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
British Airways
6.6
Okay
7,217 reviews
Austrian Airlines
7.6
Good
823 reviews

Food

6.8

Boarding

7.6

Comfort

7.3

Crew

8.1

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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.

  • What are the cheapest airlines flying from Basel EuroAirport Swiss to Denver round-trip?

    Cheapflights users have booked flights from Basel EuroAirport Swiss to Denver round-trip from $626. Other airlines that can offer you cheap pricing are British Airways, from $627, and United Airlines, from $717.

  • What are the cheapest airlines to fly from Basel EuroAirport Swiss to Denver one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $796. Users have also found prices from $835 and $1,590 on Austrian Airlines and United Airlines, respectively.

  • 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
Winter Park
Lakewood
Greeley
Cripple Creek
Brighton
Silverthorne
Golden
Thornton
Frisco
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield

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