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$571+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$571
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$728
Provider with most accurate pricing for Basel EuroAirport Swiss-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Basel EuroAirport Swiss-Denver Intl flights.
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From Basel EuroAirport Swiss to Denver Intl
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 9/36:40 amBSL - DEN
1 stop17h 45mAmerican Airlines
Mon 9/226:35 pmDEN - BSL
1 stop15h 45mAmerican Airlines
Deal found 4/30$571
This British Airways deal was found by Cheapflights users on 4/30. 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.
Fri 9/56:00 amBSL - DEN
1 stop18h 25mBritish Airways
Fri 9/192:49 pmDEN - BSL
2 stops24h 01mBritish Airways
Deal found 4/30$573
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 9/66:15 amBSL - DEN
2 stops17h 15mDelta
Sat 9/204:00 pmDEN - BSL
2 stops17h 50mDelta
Deal found 4/30$676
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 6/1011:10 amBSL - DEN
1 stop13h 15mMultiple Airlines
Wed 7/26:35 pmDEN - BSL
1 stop16h 25mMultiple Airlines
Deal found 4/30$708
This Lufthansa deal was found by Cheapflights users on 4/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/179:45 amBSL - DEN
1 stop16h 50mLufthansa
Tue 6/248:25 pmDEN - BSL
1 stop15h 10mLufthansa
Deal found 4/30$741
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/61:00 pmBSL - DEN
1 stop32h 45mUnited Airlines
Wed 9/178:20 pmDEN - BSL
1 stop28h 50mUnited Airlines
Deal found 4/30$778
This KLM deal was found by Cheapflights users on 4/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/166:15 amBSL - DEN
2 stops17h 19mKLM
Fri 6/275:40 pmDEN - BSL
2 stops16h 10mKLM
Deal found 4/30$1,052

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 May 1, 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 9/3

6:40 am-4:25 pm

1 stop17h 45m

Denver Intl

Mon 9/22

6:35 pm-6:20 pm

1 stop15h 45m

$571

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Fri 9/5

6:00 am-4:25 pm

1 stop18h 25m

Denver Intl

Fri 9/19

2:49 pm-10:50 pm

2 stops24h 01m

$573

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sat 9/6

6:15 am-3:30 pm

2 stops17h 15m

Denver Intl

Sat 9/20

4:00 pm-5:50 pm

2 stops17h 50m

$676

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Tue 6/10

11:10 am-4:25 pm

1 stop13h 15m

Denver Intl

Wed 7/2

6:35 pm-7:00 pm

1 stop16h 25m

$708

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Tue 6/17

9:45 am-6:35 pm

1 stop16h 50m

Denver Intl

Wed 6/25

8:25 pm-7:35 pm

1 stop15h 10m

$741

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sat 9/6

1:00 pm-1:45 pm

1 stop32h 45m

Denver Intl

Wed 9/17

8:20 pm-9:10 am

1 stop28h 50m

$778

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 6/16

6:15 am-3:34 pm

2 stops17h 19m

Denver Intl

Fri 6/27

5:40 pm-5:50 pm

2 stops16h 10m

$1,052

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 5/26

6:35 am-4:25 pm

1 stop17h 50m

$575

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sun 6/15

2:20 pm-11:30 pm

2 stops17h 10m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Compare providers for flights from Basel to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Basel to Denver in May.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Basel EuroAirport Swiss-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Basel EuroAirport Swiss-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Basel EuroAirport Swiss-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Basel EuroAirport Swiss-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Basel EuroAirport Swiss-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Cheapflights Insights

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

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Lufthansa
6.7
Okay
7,046 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $571. Other airlines that can offer you cheap pricing are British Airways, from $573, and Delta, from $676. American Airlines is 26% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 Basel EuroAirport Swiss?

Book flights to Basel EuroAirport Swiss if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Silverthorne
Brighton
Golden
Thornton
Greeley
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Limon

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