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$394+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BHD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$676
(Mytrip)

One-way from

$394
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$742
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. 7% potential price decrease ($61 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:35 pmDEN - BHD
1 stop14h 05mBritish Airways
Wed 10/156:50 amBHD - DEN
1 stop16h 35mBritish Airways
Deal found 4/1$607
This Finnair deal was found by Cheapflights users on 4/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:35 pmDEN - BHD
1 stop14h 05mMultiple Airlines
Wed 10/158:15 pmBHD - DEN
2 stops28h 27mMultiple Airlines
Deal found 4/1$632
This American Airlines deal was found by Cheapflights users on 4/1. 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 4/810:38 amDEN - BHD
2 stops16h 57mAmerican Airlines
Mon 9/89:50 amBHD - DEN
1 stop13h 35mAmerican Airlines
Deal found 4/1$665
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/14:40 pmDEN - BFS
2 stops23h 30mMultiple Airlines
Sun 5/117:00 amBFS - DEN
3 stops35h 27mMultiple Airlines
Deal found 4/1$676
This FlightHub deal was found by Cheapflights users on 4/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/87:55 pmDEN - BHD
2 stops15h 50mAer Lingus
Sat 6/146:00 pmBHD - DEN
2 stops30h 59mAer Lingus
Deal found 4/1$983

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 April 2, 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

Thu 5/1

4:40 pm-11:10 pm

2 stops23h 30m

Belfast Intl

Sun 5/11

7:00 am-11:27 am

3 stops35h 27m

$676

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 5/1

2:45 pm-3:30 pm

2 stops17h 45m

Belfast City

Sun 5/11

6:50 am-4:25 pm

1 stop16h 35m

$694

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 5/1

6:40 pm-6:45 pm

2 stops17h 05m

Belfast City

Sun 5/11

1:00 pm-11:59 pm

2 stops17h 59m

$704

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 6/17

4:40 pm-5:20 pm

2 stops17h 40m

Belfast City

Sat 6/21

6:55 am-11:27 am

2 stops35h 32m

$981

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 6/8

7:55 pm-6:45 pm

2 stops15h 50m

Belfast City

Sat 6/14

6:00 pm-5:59 pm

2 stops30h 59m

$983

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 5/16

11:25 pm-7:45 am

2 stops49h 20m

$394

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 5/16

12:54 pm-9:15 pm

2 stops25h 21m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

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 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.

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 April 2, 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.

Rainfall in Belfast by month

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

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

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

If weather is an important factor for your trip to Belfast, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated April 2, 2025.
To help decide which airline to fly from Colorado to Belfast, see what other customers have to say about Delta, American Airlines and Aer Lingus. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

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.
Aer Lingus
7.0
Good
1,060 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

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.
British Airways
6.6
Okay
6,715 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

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 Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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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Alternative routes for Colorado to Belfast

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Top 2 airlines flying from Colorado to Belfast

Discover the top 2 airlines 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$573Average$680FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$634Average$745FlexibilityNo cancel feeOn-time71%

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