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$456+ Cheap flights from Colorado 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BSL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Colorado to Basel

Keep the following information in mind while searching for Colorado to Basel flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$614
(Justfly.com)

One-way from

$456
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$984
Provider with most accurate pricing for Denver Intl-Basel (EAP) flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Basel (EAP) flights.
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From Colorado to Basel EuroAirport Swiss
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One-way flight from Colorado to Basel EuroAirport Swiss
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Highest demand for flights based on searches. 9% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 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 Colorado to Basel

Cheapest flights from Colorado to Basel
Explore the most affordable flight options available from Colorado to Basel. 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.
Mon 12/15:30 pmDEN - BSL
1 stop16h 40mAmerican Airlines
Sun 12/146:35 amBSL - DEN
1 stop16h 50mAmerican Airlines
Deal found 4/30$609
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/129:40 amDEN - BSL
2 stops17h 10mAir Canada
Thu 8/2811:30 amBSL - DEN
2 stops30h 51mAir Canada
Deal found 4/30$614
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.
Mon 12/14:59 pmDEN - BSL
2 stops17h 11mBritish Airways
Sun 12/146:35 amBSL - DEN
1 stop16h 50mBritish Airways
Deal found 4/30$616
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/124:15 pmDEN - BSL
1 stop12h 10mLufthansa
Thu 8/288:25 amBSL - DEN
1 stop15h 10mLufthansa
Deal found 4/30$623
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/129:40 amDEN - BSL
2 stops17h 10mMultiple Airlines
Thu 8/288:25 amBSL - DEN
1 stop15h 10mMultiple Airlines
Deal found 4/30$627
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/45:40 pmDEN - BSL
1 stop31h 50mDelta
Tue 5/206:15 amBSL - DEN
2 stops17h 19mDelta
Deal found 4/29$685
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:20 pmDEN - BSL
1 stop28h 50mUnited Airlines
Wed 9/241:00 pmBSL - DEN
1 stop13h 40mUnited Airlines
Deal found 4/29$769
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/127:50 pmDEN - BSL
1 stop29h 50mTurkish Airlines
Mon 6/236:55 pmBSL - DEN
1 stop31h 00mTurkish Airlines
Deal found 4/30$1,179
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/147:35 amEGE - BSL
2 stops19h 20mUnited Airlines
Sat 6/2111:30 amBSL - EGE
2 stops40h 31mUnited Airlines
Deal found 4/29$1,572

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado 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 May 1, 2025.
Use the filters below to find and compare flights from Colorado to Basel EuroAirport Swiss that are best for you.

Fly from

Colorado

Fly to

Basel

Route

Depart

Return

Price

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sun 5/4

5:59 pm-5:50 pm

1 stop15h 51m

Basel EuroAirport Swiss

Tue 5/20

11:25 am-3:35 pm

1 stop12h 10m

$673

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sun 5/4

5:40 pm-9:30 am

1 stop31h 50m

Basel EuroAirport Swiss

Tue 5/20

6:15 am-3:34 pm

2 stops17h 19m

$685

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sun 5/4

5:40 pm-10:50 am

2 stops33h 10m

Basel EuroAirport Swiss

Tue 5/20

11:25 am-10:27 am

2 stops31h 02m

$704

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Fri 5/9

5:40 pm-2:10 pm

1 stop12h 30m

Basel EuroAirport Swiss

Fri 5/16

10:15 am-7:58 pm

2 stops17h 43m

$811

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Fri 5/9

6:35 pm-10:50 pm

1 stop20h 15m

Basel EuroAirport Swiss

Fri 5/16

6:00 am-4:25 pm

1 stop18h 25m

$832

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Thu 6/12

7:50 pm-9:40 am

1 stop29h 50m

Basel EuroAirport Swiss

Mon 6/23

6:55 pm-5:55 pm

1 stop31h 00m

$1,179

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Thu 6/12

12:22 pm-6:25 pm

2 stops22h 03m

Basel EuroAirport Swiss

Mon 6/23

7:20 pm-4:25 pm

1 stop29h 05m

$1,228

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sat 6/14

8:27 pm-7:35 pm

2 stops39h 08m

Basel EuroAirport Swiss

Sat 6/21

11:30 am-6:20 pm

2 stops38h 50m

$1,238

VailBasel

EGE - BSL

EGEBSL

Vail Eagle County

Sat 6/14

7:35 am-10:55 am

2 stops19h 20m

Basel EuroAirport Swiss

Sat 6/21

11:30 am-8:01 pm

2 stops40h 31m

$1,572

DenverBasel

DEN - BSL

DENBSL

Denver Intl

Sat 5/24

8:22 pm-4:05 pm

3 stops35h 43m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 17 results
1
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Best time to book a flight from Colorado to Basel

Have a flexible travel schedule? Discover the best time to fly to Basel from Colorado 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 Colorado to Basel EuroAirport Swiss

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

Find hourly flight availability from Colorado 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 May 1, 2025.

When flying from Colorado to Basel EuroAirport Swiss, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Basel by month

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

In terms of precipitation, rainfall in Basel EuroAirport Swiss ranges from 1.9 - 3.4 inches per month. June is typically the wettest month, when rainfall can reach 3.4 in. February is typically the driest time to visit Basel EuroAirport Swiss when rainfall is around 1.9 in.

Temperature in Basel by month

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

If weather is an important factor for your trip to Basel EuroAirport Swiss, 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 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 May 1, 2025.
Read reviews from past customers who have flown Delta, KLM and United Airlines from Colorado to Basel. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,790 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,245 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • What airport do you fly into for flights to Basel from Colorado?

    If you book a flight to Basel from Colorado, you will be flying to EuroAirport Swiss, which is the city’s only airport. Basel EuroAirport Swiss (BSL) is located 3.6 mi from the center of Basel.

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

    The cheapest airlines for a one-way flight from Colorado to Basel EuroAirport Swiss are Delta ($552), Lufthansa ($554), and KLM ($561).

  • What are the most popular routes from Colorado to Basel EuroAirport Swiss?

    Most travelers choose Denver Intl - Basel EuroAirport Swiss, Aspen Pitkin County - Basel EuroAirport Swiss or Colorado Springs - Basel EuroAirport Swiss when deciding on the best route from Colorado to Basel EuroAirport Swiss.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Basel EuroAirport Swiss (average of $545). Flying from Colorado 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

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Top airline flying from Colorado to Basel

Discover the top airline that operate flights from Colorado 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$582Average$1,125FlexibilityNo cancel feeOn-time76%

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