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$448+ Cheap flights from Colorado to Belfast

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BHD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Colorado to Belfast

Keep the following information in mind while searching for Colorado to Belfast flight deals. Data was last updated September 15, 2025.

Round-trip from

$777
(Mytrip)

One-way from

$448
(KLM)

Popular in

December

Cheapest in

November

Average price

$722
From Colorado to Belfast
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One-way flight from Colorado to Belfast
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Highest demand for flights based on searches. 7% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Colorado to Belfast

Cheapest flights from Colorado to Belfast
Explore the most affordable flight options available from Colorado to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:40 pmDEN - BFS
2 stops22h 00mMultiple Airlines
Wed 11/57:20 amBFS - DEN
2 stops17h 45mMultiple Airlines
Deal found 9/14$777
This Ovago deal was found by Cheapflights users on 9/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:55 pmDEN - BHD
2 stops18h 00mBritish Airways
Sun 10/126:50 amBHD - DEN
2 stops19h 36mBritish Airways
Deal found 9/13$895
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
Thu 10/27:55 pmDEN - BHD
2 stops17h 00mAer Lingus
Sun 10/127:00 amBHD - DEN
2 stops17h 59mAer Lingus
Deal found 9/15$962
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/106:14 pmDEN - BHD
2 stops19h 31mMultiple Airlines
Fri 10/179:30 amBHD - DEN
2 stops17h 57mMultiple Airlines
Deal found 9/14$1,034
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:15 pmDEN - BFS
2 stops21h 25mMultiple Airlines
Fri 10/176:05 amBFS - DEN
3 stops35h 41mMultiple Airlines
Deal found 9/14$1,134

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Belfast 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 September 15, 2025.
Use the filters below to find and compare flights from Colorado to Belfast that are best for you.

Fly from

Colorado

Fly to

Belfast

Route

Depart

Return

Price

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 10/29

4:40 pm-8:40 pm

2 stops22h 00m

Belfast Intl

Wed 11/5

7:20 am-6:05 pm

2 stops17h 45m

$777

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

7:55 pm-8:55 pm

2 stops18h 00m

Belfast City

Sun 10/12

6:50 am-7:26 pm

2 stops19h 36m

$895

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

7:55 pm-7:55 pm

2 stops17h 00m

Belfast City

Sun 10/12

7:00 am-5:59 pm

2 stops17h 59m

$962

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 10/10

6:14 pm-8:45 pm

2 stops19h 31m

Belfast City

Fri 10/17

9:30 am-8:27 pm

2 stops17h 57m

$1,034

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 10/10

12:15 pm-4:40 pm

2 stops21h 25m

Belfast Intl

Fri 10/17

6:05 am-10:46 am

3 stops35h 41m

$1,134

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sat 10/4

6:35 pm-5:15 pm

1 stop15h 40m

Belfast City

Wed 10/8

6:50 am-4:25 pm

1 stop16h 35m

$1,421

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

2:00 pm-4:55 pm

2 stops19h 55m

$448

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

6:35 pm-8:50 am

1 stop31h 15m

$633

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Thu 10/2

7:55 pm-4:40 pm

2 stops13h 45m

$1,584

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Best time to book a flight from Colorado to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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 Belfast

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

Find hourly flight availability from Colorado to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Belfast as you normally would.

Related info for your journey

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

  • How long is the flight from Colorado to Belfast?

    For as low as $962, British Airways can have you in Belfast from Colorado in 17h. The distance between Colorado and Belfast is about 4347 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Colorado to Belfast (average of $657). Flying from Colorado to Belfast in June is currently the most expensive (average of $1,189). 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 Belfast

Discover the top airline that operate flights from Colorado to Belfast. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$608Average$776FlexibilityNo cancel feeOn-time70%

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