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$600+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$597
(Billigflug)

Popular in

May

Cheapest in

September

Average price

$943
Provider with most accurate pricing for Basel (EAP)-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Basel (EAP)-Denver Intl flights.
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From Basel EuroAirport Swiss to Colorado
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Highest demand for flights based on searches. 0% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 20, 2026.

This American Airlines deal was found by Cheapflights users on 1/19. 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 9/186:00 am
BSL
-
DEN
1 stop18h 30m
American Airlines
Tue 9/222:13 pm
DEN
-
BSL
2 stops20h 17m
American Airlines
Deal found 1/19$600
This American Airlines deal was found by Cheapflights users on 1/18. 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 3/266:05 am
BSL
-
DEN
2 stops20h 56m
American Airlines
Tue 3/316:40 pm
DEN
-
BSL
1 stop32h 35m
American Airlines
Deal found 1/18$602
This American Airlines deal was found by Cheapflights users on 1/18. 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 2/256:20 am
BSL
-
DEN
2 stops24h 17m
American Airlines
Sun 3/112:33 pm
DEN
-
BSL
2 stops18h 32m
American Airlines
Deal found 1/18$603
This Flysmarter deal was found by Cheapflights users on 1/18. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 am
BSL
-
DEN
1 stop17h 55m
British Airways
Sat 9/126:40 pm
DEN
-
BSL
1 stop15h 45m
British Airways
Deal found 1/18$612
This British Airways deal was found by Cheapflights users on 1/18. 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 2/256:20 am
BSL
-
DEN
1 stop17h 10m
British Airways
Sun 3/15:25 pm
DEN
-
BSL
1 stop13h 40m
British Airways
Deal found 1/18$620
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Thu 7/232:50 pm
BSL
-
DEN
2 stops17h 00m
United Airlines
Sat 8/84:15 pm
DEN
-
BSL
1 stop19h 35m
United Airlines
Deal found 1/19$861
This American Airlines deal was found by Cheapflights users on 1/17. 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 10/277:00 am
BSL
-
COS
2 stops33h 15m
American Airlines
Sat 10/312:55 pm
COS
-
BSL
2 stops41h 10m
American Airlines
Deal found 1/17$1,098

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 January 20, 2026.
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

Thu 3/26

6:05 am-7:04 pm

2 stops19h 59m

Denver Intl

Tue 3/31

4:44 pm-6:55 pm

2 stops18h 11m

$602

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 2/25

6:20 am-10:37 pm

2 stops24h 17m

Denver Intl

Sun 3/1

12:33 pm-3:05 pm

2 stops18h 32m

$603

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Wed 2/25

6:20 am-3:30 pm

1 stop17h 10m

Denver Intl

Sun 3/1

5:25 pm-3:05 pm

1 stop13h 40m

$620

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 3/5

9:50 am-6:55 pm

1 stop17h 05m

Denver Intl

Thu 3/12

9:20 pm-7:40 pm

1 stop15h 20m

$863

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Sat 5/23

7:10 pm-6:25 pm

1 stop31h 15m

Denver Intl

Sat 6/6

11:05 am-6:15 pm

2 stops23h 10m

$1,128

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 3/26

10:55 am-6:35 pm

1 stop38h 40m

Denver Intl

Mon 3/30

11:59 pm-9:45 am

2 stops25h 46m

$1,141

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Thu 4/2

10:40 am-9:25 pm

2 stops42h 45m

Denver Intl

Tue 4/7

8:25 pm-9:45 am

1 stop29h 20m

$1,319

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Fri 7/10

6:00 am-5:37 pm

2 stops19h 37m

$621

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Mon 3/30

6:40 am-3:53 pm

2 stops17h 13m

$626

BaselDenver

BSL - DEN

BSLDEN

Basel EuroAirport Swiss

Fri 7/10

6:00 am-4:30 pm

1 stop18h 30m

$754

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 15 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.

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.

  • How long is the flight from Basel EuroAirport Swiss to Colorado?

    For as low as $620, American Airlines can have you in Colorado from Basel EuroAirport Swiss in 17h 10m. The distance between Basel EuroAirport Swiss and Colorado is about 5101 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

See more FAQs

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