$660+ Cheap flights from Basel EuroAirport Swiss (BSL) to Colorado
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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BSL — DEN
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Basel to Colorado with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest
Best
Last-minute
One-way
Cheapest flights from Basel to ColoradoExplore 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 February 3, 2026.
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 February 3, 2026.
This lastminute.com deal was found by Cheapflights users on 2/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:05 pm
BSL
- DEN
2 stops56h 26m
Lufthansa
Mon 2/233:55 pm
DEN
- BSL
1 stop13h 20m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$730
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:40 am
BSL
- DEN
1 stop17h 50m
American Airlines
Sun 6/712:39 pm
DEN
- BSL
2 stops22h 11m
American Airlines
Deal found 2/1![American Airlines logo]()
$764
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 9/196:35 am
BSL
- DEN
2 stops19h 07m
American Airlines
Wed 9/234:54 pm
DEN
- BSL
2 stops18h 36m
American Airlines
Deal found 2/2![American Airlines logo]()
$767
This Iberia deal was found by Cheapflights users on 2/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
BSL
- DEN
2 stops22h 05m
Multiple Airlines
Tue 4/75:10 pm
DEN
- BSL
2 stops17h 45m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$772
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:40 am
BSL
- DEN
2 stops23h 43m
American Airlines
Sat 6/66:52 pm
DEN
- BSL
2 stops19h 58m
American Airlines
Deal found 2/1![American Airlines logo]()
$778
This Iberia deal was found by Cheapflights users on 2/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:35 am
BSL
- DEN
2 stops22h 15m
Multiple Airlines
Sat 3/75:25 pm
DEN
- BSL
1 stop16h 40m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$782
This British Airways deal was found by Cheapflights users on 2/1. 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 3/16:35 am
BSL
- DEN
1 stop16h 55m
British Airways
Sat 3/75:25 pm
DEN
- BSL
1 stop20h 25m
British Airways
Deal found 2/1![British Airways logo]()
$788
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:45 am
BSL
- DEN
1 stop13h 15m
Lufthansa
Sun 3/2211:22 am
DEN
- BSL
2 stops15h 33m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$816
This American Airlines deal was found by Cheapflights users on 2/1. 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 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 stops35h 09m
American Airlines
Sat 10/312:55 pm
COS
- BSL
2 stops41h 10m
American Airlines
Deal found 2/1![American Airlines logo]()
$956
Best flights from Basel to ColoradoDiscover carefully curated flight deals from Basel to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from Basel to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This lastminute.com deal was found by Cheapflights users on 2/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:05 pm
BSL
- DEN
2 stops56h 26m
Lufthansa
Mon 2/233:55 pm
DEN
- BSL
1 stop13h 20m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$730
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:40 am
BSL
- DEN
2 stops23h 43m
American Airlines
Sat 6/66:52 pm
DEN
- BSL
2 stops19h 58m
American Airlines
Deal found 2/1![American Airlines logo]()
$778
This Iberia deal was found by Cheapflights users on 2/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
BSL
- DEN
2 stops22h 05m
Multiple Airlines
Tue 4/76:40 pm
DEN
- BSL
1 stop16h 15m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$783
This British Airways deal was found by Cheapflights users on 2/1. 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 3/16:35 am
BSL
- DEN
1 stop16h 55m
British Airways
Sat 3/75:25 pm
DEN
- BSL
1 stop20h 25m
British Airways
Deal found 2/1![British Airways logo]()
$788
This Delta deal was found by Cheapflights users on 2/1. 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.
Sat 5/236:30 am
BSL
- DEN
2 stops21h 45m
Delta
Sun 6/75:40 pm
DEN
- BSL
1 stop12h 05m
Delta
Deal found 2/1![Delta logo]()
$820
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/199:50 am
BSL
- DEN
1 stop17h 05m
United Airlines
Thu 3/269:20 pm
DEN
- BSL
1 stop15h 20m
United Airlines
Deal found 2/2![United Airlines logo]()
$833
This Air Canada deal was found by Cheapflights users on 2/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:00 am
BSL
- DEN
2 stops31h 33m
Air Canada
Sun 6/76:10 pm
DEN
- BSL
2 stops32h 15m
Air Canada
Deal found 2/1![Air Canada logo]()
$849
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:45 am
BSL
- DEN
1 stop13h 15m
Lufthansa
Sun 3/2211:22 am
DEN
- BSL
2 stops15h 33m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$816
This Delta deal was found by Cheapflights users on 2/1. 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.
Sun 5/242:25 pm
BSL
- DEN
2 stops18h 01m
Delta
Sun 6/75:40 pm
DEN
- BSL
1 stop12h 05m
Delta
Deal found 2/1![Delta logo]()
$828
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Sun 3/19:50 am
BSL
- DEN
1 stop17h 05m
United Airlines
Sat 3/71:25 pm
DEN
- BSL
2 stops15h 05m
United Airlines
Deal found 2/1![United Airlines logo]()
$841
This lastminute.com deal was found by Cheapflights users on 2/1. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:05 pm
BSL
- DEN
2 stops56h 26m
Lufthansa
Mon 2/165:45 pm
DEN
- BSL
1 stop20h 40m
Lufthansa
Deal found 2/1![Lufthansa logo]()
$852
Last-minute flights from Basel to ColoradoDiscover last-minute flight deals from Basel to Colorado. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Basel to Colorado. Data last updated February 3, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 2/1. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:05 pm
BSL
- DEN
2 stops56h 26m
Lufthansa
Mon 2/165:45 pm
DEN
- BSL
1 stop20h 40m
Lufthansa
Deal found 2/1![Lufthansa logo]()
$852
This lastminute.com deal was found by Cheapflights users on 2/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:05 pm
BSL
- DEN
2 stops56h 26m
Lufthansa
Mon 2/233:55 pm
DEN
- BSL
1 stop13h 20m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$730
This Iberia deal was found by Cheapflights users on 2/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:35 am
BSL
- DEN
2 stops22h 15m
Multiple Airlines
Sat 3/75:25 pm
DEN
- BSL
1 stop16h 40m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$782
This British Airways deal was found by Cheapflights users on 2/1. 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 3/16:35 am
BSL
- DEN
1 stop16h 55m
British Airways
Sat 3/75:25 pm
DEN
- BSL
1 stop20h 25m
British Airways
Deal found 2/1![British Airways logo]()
$788
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Sun 3/19:50 am
BSL
- DEN
1 stop17h 05m
United Airlines
Sat 3/71:25 pm
DEN
- BSL
2 stops15h 05m
United Airlines
Deal found 2/1![United Airlines logo]()
$841
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:45 am
BSL
- DEN
1 stop13h 15m
Lufthansa
Sun 3/2211:22 am
DEN
- BSL
2 stops15h 33m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$816
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/199:50 am
BSL
- DEN
1 stop17h 05m
United Airlines
Thu 3/269:20 pm
DEN
- BSL
1 stop15h 20m
United Airlines
Deal found 2/2![United Airlines logo]()
$833
One-way flights from Basel to ColoradoSearch for one-way flight options from Basel to Colorado. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Basel to Colorado. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This KAYAK deal was found by Cheapflights users on 2/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:15 am
BSL
- DEN
2 stops20h 29m
British Airways
Deal found 2/3![British Airways logo]()
$660
This Iberia deal was found by Cheapflights users on 2/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1311:55 am
BSL
- DEN
2 stops20h 12m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$765
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Sat 6/136:35 am
BSL
- DEN
2 stops18h 24m
American Airlines
Deal found 2/2![American Airlines logo]()
$769
This British Airways deal was found by Cheapflights users on 2/3. 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.
Sat 6/136:35 am
BSL
- DEN
2 stops21h 09m
British Airways
Deal found 2/3![British Airways logo]()
$770
This Iberia deal was found by Cheapflights users on 2/2. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:15 am
BSL
- DEN
2 stops22h 22m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$777
This Cheapflightsfares deal was found by Cheapflights users on 1/31. 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.
Sun 4/128:20 am
BSL
- DEN
1 stop13h 15m
Lufthansa
Deal found 1/31![Lufthansa logo]()
$880
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 7/299:50 am
BSL
- DEN
2 stops15h 45m
Lufthansa
Deal found 2/3![Lufthansa logo]()
$981
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/249:50 am
BSL
- DEN
1 stop12h 30m
Lufthansa
Deal found 2/2![Lufthansa logo]()
$1,004
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Sun 7/197:15 am
BSL
- DEN
1 stop17h 15m
American Airlines
Deal found 2/3![American Airlines logo]()
$1,014
Find flight deals from Basel to Colorado
Keep the following information in mind while searching for Basel to Colorado flight deals. Data was last updated February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $730 (lastminute.com) |
One-way from | $660 (KAYAK) |
Popular in | May |
Cheapest in | September |
Average price | $894 |
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 February 3, 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
Fri 2/20
7:05 pm-7:31 pm
2 stops56h 26m
Denver Intl
Mon 2/23
3:55 pm-1:15 pm
1 stop13h 20m
$730
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Mon 5/25
6:40 am-10:23 pm
2 stops23h 43m
Denver Intl
Sat 6/6
6:52 pm-10:50 pm
2 stops19h 58m
$778
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Fri 4/3
6:00 am-8:05 pm
2 stops22h 05m
Denver Intl
Tue 4/7
6:40 pm-6:55 pm
1 stop16h 15m
$783
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sun 3/1
6:35 am-3:30 pm
1 stop16h 55m
Denver Intl
Sat 3/7
5:25 pm-9:50 pm
1 stop20h 25m
$788
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sat 3/7
10:45 am-4:00 pm
1 stop13h 15m
Denver Intl
Sun 3/22
11:22 am-9:55 am
2 stops15h 33m
$816
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sat 5/23
6:30 am-8:15 pm
2 stops21h 45m
Denver Intl
Sun 6/7
5:40 pm-1:45 pm
1 stop12h 05m
$820
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sun 5/24
2:25 pm-12:26 am
2 stops18h 01m
Denver Intl
Sun 6/7
5:40 pm-1:45 pm
1 stop12h 05m
$828
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Thu 3/19
9:50 am-7:55 pm
1 stop17h 05m
Denver Intl
Thu 3/26
9:20 pm-7:40 pm
1 stop15h 20m
$833
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sun 3/1
9:50 am-6:55 pm
1 stop17h 05m
Denver Intl
Sat 3/7
1:25 pm-12:30 pm
2 stops15h 05m
$841
BaselDenver
BSL - DEN
BSLDEN
Basel EuroAirport Swiss
Sun 5/24
11:00 am-10:33 am
2 stops31h 33m
Denver Intl
Sun 6/7
6:10 pm-10:25 am
2 stops32h 15m
$849
Showing 1-10 of 19 results
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.
BSL-DEN
BSL-COS
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
BSL-USCO
BSL-DEN
BSL-COS
No data available for this route at this time. Please check back soon.