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$640+ Cheap flights from Basel EuroAirport Swiss (BSL) to Colorado

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheap flight deals from Basel to Colorado

Keep the following information in mind while searching for Basel to Colorado flight deals. Data was last updated July 2, 2025.

Round-trip from

$640
(American Airlines)

Popular in

September

Cheapest in

February

Average price

$952
From Basel EuroAirport Swiss to Colorado
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($39 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 Colorado

Cheapest flights from Basel to Colorado
Explore the most affordable flight options available from Basel to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

This American Airlines deal was found by Cheapflights users on 6/30. 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 8/186:35 amBSL - DEN
1 stop17h 50mAmerican Airlines
Mon 8/256:35 pmDEN - BSL
1 stop20h 15mAmerican Airlines
Deal found 6/30$640
This British Airways deal was found by Cheapflights users on 7/1. 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 8/177:05 amBSL - DEN
2 stops18h 41mBritish Airways
Sun 8/2410:35 amDEN - BSL
2 stops16h 45mBritish Airways
Deal found 7/1$650
This Billigflug deal was found by Cheapflights users on 7/2. 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 8/216:10 amBSL - DEN
2 stops19h 36mMultiple Airlines
Mon 8/256:35 pmDEN - BSL
1 stop32h 20mMultiple Airlines
Deal found 7/2$669
This Lufthansa deal was found by Cheapflights users on 7/2. 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.
Thu 8/216:05 amBSL - DEN
1 stop15h 20mLufthansa
Mon 8/254:15 pmDEN - BSL
1 stop12h 10mLufthansa
Deal found 7/2$762
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Fri 8/159:45 amBSL - DEN
1 stop16h 50mUnited Airlines
Fri 8/2211:59 pmDEN - BSL
2 stops35h 36mUnited Airlines
Deal found 7/1$770
This Delta deal was found by Cheapflights users on 7/1. 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.
Fri 8/1510:15 amBSL - DEN
2 stops18h 01mDelta
Fri 8/225:45 amDEN - BSL
2 stops19h 50mDelta
Deal found 7/1$786
This Air Canada deal was found by Cheapflights users on 6/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/218:25 amBSL - DEN
2 stops21h 03mAir Canada
Mon 8/119:40 amDEN - BSL
2 stops17h 10mAir Canada
Deal found 6/30$885
This American Airlines deal was found by Cheapflights users on 7/2. 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 7/186:00 amBSL - COS
2 stops22h 28mAmerican Airlines
Tue 7/2212:03 pmCOS - BSL
2 stops14h 52mAmerican Airlines
Deal found 7/2$988
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Fri 8/1511:30 amBSL - COS
2 stops14h 25mUnited Airlines
Fri 8/226:25 pmCOS - BSL
2 stops34h 00mUnited Airlines
Deal found 7/1$1,257
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/306:55 pmBSL - DEN
1 stop31h 00mTurkish Airlines
Wed 7/97:50 pmDEN - BSL
1 stop29h 50mTurkish Airlines
Deal found 6/30$1,746

Cheapflights Fare Finder

Customize your flight search to find flights from Basel to Colorado 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 2, 2025.
Use the filters below to find and compare flights from Basel EuroAirport Swiss to Colorado that are best for you.

Fly from

Basel

Fly to

Colorado

Route

Depart

Return

Price

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 8/18

6:35 am-4:25 pm

1 stop17h 50m

Denver Intl

Mon 8/25

6:35 pm-10:50 pm

1 stop20h 15m

$640

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sun 8/17

7:05 am-5:46 pm

2 stops18h 41m

Denver Intl

Sun 8/24

10:35 am-11:20 am

2 stops16h 45m

$650

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 8/21

6:10 am-5:46 pm

2 stops19h 36m

Denver Intl

Mon 8/25

6:35 pm-10:55 am

1 stop32h 20m

$669

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 8/21

6:05 am-1:25 pm

1 stop15h 20m

Denver Intl

Mon 8/25

4:15 pm-12:25 pm

1 stop12h 10m

$762

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Fri 8/15

9:45 am-6:35 pm

1 stop16h 50m

Denver Intl

Fri 8/22

11:59 pm-7:35 pm

2 stops35h 36m

$770

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Fri 8/15

10:15 am-8:16 pm

2 stops18h 01m

Denver Intl

Fri 8/22

5:45 am-9:35 am

2 stops19h 50m

$786

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 7/21

8:25 am-9:28 pm

2 stops21h 03m

Denver Intl

Mon 8/11

9:40 am-10:50 am

2 stops17h 10m

$885

BaselColorado Springs

BSL - COS

BSLCOS

Basel EuroAirport Swiss

Fri 7/18

6:00 am-8:28 pm

2 stops22h 28m

Colorado Springs

Tue 7/22

12:03 pm-10:55 am

2 stops14h 52m

$988

BaselColorado Springs

BSL - COS

BSLCOS

Basel EuroAirport Swiss

Fri 8/15

11:30 am-5:55 pm

2 stops14h 25m

Colorado Springs

Fri 8/22

6:25 pm-12:25 pm

2 stops34h 00m

$1,257

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sun 9/28

8:30 am-8:27 pm

2 stops19h 57m

$930

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 13 results
1
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Best time to book a flight from Basel to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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 Colorado
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated July 2, 2025.
Read through reviews of airlines operating flights from Basel EuroAirport Swiss to Colorado, such as Delta, Austrian Airlines, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
809 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,669 reviews
Delta
8.0
Very good
7,983 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Basel to Colorado. 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 from for flights from Basel to Colorado?

    If you book a flight to Colorado from Basel, you will be flying from 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 Basel EuroAirport Swiss to Colorado one-way?

    One-way options have recently been found by users for as low as $1,216 on British Airways. Other airlines that offer cheap prices include Austrian Airlines from $1,322 and United Airlines from $1,604 one-way.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Basel EuroAirport Swiss to Colorado (average of $197). Flying from Basel EuroAirport Swiss to Colorado 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

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Alternative routes for Basel to Colorado

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