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$508+ Cheap flights from Denver (DEN) to Basel EuroAirport Swiss (BSL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BSL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Denver to Basel

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Basel (BSL). 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 16, 2025.

Round-trip from

$621
(British Airways)

One-way from

$508
(Cheapflightsfares)

Popular in

May

Cheapest in

February

Average price

$3,136
From Denver Intl to Basel EuroAirport Swiss
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One-way flight from Denver Intl to Basel EuroAirport Swiss
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Highest demand for flights based on searches. 26% potential increase in price ($479 potential increase over avg. RT price).
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Cheapest flight prices on average. 20% potential price decrease ($234 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Denver to Basel

Cheapest flights from Denver to Basel
Explore the most affordable flight options available from Denver to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This British Airways deal was found by Cheapflights users on 9/14. 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 12/15:25 pmDEN - BSL
1 stop16h 50mBritish Airways
Sun 12/146:35 amBSL - DEN
1 stop16h 55mBritish Airways
Deal found 9/14$621
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 12/112:26 pmDEN - BSL
2 stops18h 09mAmerican Airlines
Sun 12/141:30 pmBSL - DEN
2 stops18h 27mAmerican Airlines
Deal found 9/14$634
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/94:20 pmDEN - BSL
1 stop12h 10mLufthansa
Wed 12/1710:35 amBSL - DEN
1 stop13h 25mLufthansa
Deal found 9/13$685
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:45 pmDEN - BSL
1 stop11h 50mLufthansa
Thu 11/1310:35 amBSL - DEN
1 stop13h 25mLufthansa
Deal found 9/16$689
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:15 amDEN - BSL
2 stops14h 40mLufthansa
Wed 11/2610:35 amBSL - DEN
1 stop13h 25mLufthansa
Deal found 9/16$693
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:20 pmDEN - BSL
1 stop12h 10mLufthansa
Wed 12/1010:35 amBSL - DEN
2 stops16h 42mLufthansa
Deal found 9/16$695
This British Airways deal was found by Cheapflights users on 9/14. 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 10/126:35 pmDEN - BSL
1 stop20h 15mBritish Airways
Mon 10/207:20 pmBSL - DEN
1 stop29h 05mBritish Airways
Deal found 9/14$706
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:45 pmDEN - BSL
2 stops14h 20mLufthansa
Tue 12/910:35 amBSL - DEN
1 stop13h 25mLufthansa
Deal found 9/16$710

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Basel 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 16, 2025.
Use the filters below to find and compare flights from Denver to Basel EuroAirport Swiss that are best for you.

Fly from

Denver

Fly to

Basel

Route

Depart

Return

Price

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Mon 12/1

5:25 pm-6:15 pm

1 stop16h 50m

Basel EuroAirport Swiss

Sun 12/14

6:35 am-3:30 pm

1 stop16h 55m

$621

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Mon 12/1

12:26 pm-2:35 pm

2 stops18h 09m

Basel EuroAirport Swiss

Sun 12/14

1:30 pm-11:57 pm

2 stops18h 27m

$634

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Tue 11/18

4:20 pm-12:30 pm

1 stop12h 10m

Basel EuroAirport Swiss

Wed 11/26

10:35 am-4:00 pm

1 stop13h 25m

$685

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Tue 11/25

5:45 pm-1:35 pm

1 stop11h 50m

Basel EuroAirport Swiss

Wed 12/3

10:35 am-4:00 pm

1 stop13h 25m

$689

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Tue 12/9

4:20 pm-12:30 pm

1 stop12h 10m

Basel EuroAirport Swiss

Wed 12/17

1:10 pm-9:56 pm

2 stops16h 46m

$705

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Mon 10/13

6:35 pm-10:50 pm

1 stop20h 15m

Basel EuroAirport Swiss

Mon 10/20

7:20 pm-4:25 pm

1 stop29h 05m

$706

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Tue 10/14

6:35 pm-10:50 pm

1 stop20h 15m

Basel EuroAirport Swiss

Mon 10/20

7:20 pm-4:25 pm

1 stop29h 05m

$706

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sun 11/23

5:45 pm-1:45 pm

1 stop12h 00m

$508

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Wed 12/3

5:45 pm-1:35 pm

1 stop11h 50m

$508

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Mon 12/8

5:35 pm-4:05 pm

2 stops14h 30m

$508

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 14 results
1
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Best time to book a flight from Denver to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Denver 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.

Cheapflights Insights

Everything you need to know about your flight from Denver to Basel EuroAirport Swiss

What is the cheapest time of day to fly from DEN to BSL?

Find hourly flight availability from Denver to Basel. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Basel EuroAirport Swiss as you normally would.

Reviews of airlines servicing Basel

Get insights into the airlines that provide service to Basel. 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 Basel. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Denver to Basel EuroAirport Swiss, such as Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,407 reviews

Boarding

7.0

Crew

7.6

Food

6.3

Comfort

6.8

Entertainment

6.4

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
Lufthansa
6.8
Okay
7,407 reviews
Lufthansa
6.8
Okay
7,407 reviews

Boarding

7.0

Crew

7.6

Food

6.3

Comfort

6.8

Entertainment

6.4

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.

Related info for your journey

Find useful and relevant information for your journey from Denver to Basel. 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 Denver to Basel EuroAirport Swiss?

    A quick flight from Denver to Basel EuroAirport Swiss can take about 16h 50m. British Airways provides one of the quickest options available for as low as $621. The distance from Denver to Basel EuroAirport Swiss is about 5101 mi.

  • What is the cheapest airline to fly from Denver to Basel EuroAirport Swiss round-trip?

    Our cheapest airline available from Denver to Basel EuroAirport Swiss is Lufthansa. Our recent data shows that you can find tickets from as low as $667 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Basel 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 Denver to Basel EuroAirport Swiss?

    Currently, January is the cheapest month in which you can book a flight from Denver to Basel EuroAirport Swiss (average of $545). Flying from Denver to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Denver to Basel

See prices for flight routes from nearby airports that may be better suited for you.
Aspen to Basel flights

Top airline flying from Denver to Basel

Discover the top airline that operate flights from Denver to Basel. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$667Average$1,125FlexibilityNo cancel feeOn-time76%

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