$345+ 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BHD
Nov 29 — Dec 61
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Colorado to Belfast 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 October 30, 2025.
Round-trip from | $675 (oojo) |
|---|---|
One-way from | $345 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $667 |
Find flight deals from Colorado to Belfast
Cheapest flights from Colorado to BelfastExplore 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 October 30, 2025.
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 October 30, 2025.
This KLM deal was found by Cheapflights users on 10/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:02 pmDEN - BHD
2 stops21h 48mKLM
Mon 11/246:30 amBHD - DEN
2 stops17h 55mKLM
Deal found 10/28![KLM logo]()
$698
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 11/155:45 pmDEN - BFS
2 stops21h 55mMultiple Airlines
Mon 11/249:00 pmBFS - DEN
2 stops28h 05mMultiple Airlines
Deal found 10/28![Multiple Airlines logo]()
$1,150
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 12/133:40 pmDEN - BFS
2 stops24h 00mMultiple Airlines
Sat 12/205:55 pmBFS - DEN
2 stops31h 10mMultiple Airlines
Deal found 10/28![Multiple Airlines logo]()
$1,229
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 11/158:45 amDEN - BHD
3 stops26h 40mMultiple Airlines
Mon 11/247:20 amBHD - DEN
2 stops17h 45mMultiple Airlines
Deal found 10/28![Multiple Airlines logo]()
$1,510
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 October 30, 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 - BHD
DENBHD
Denver Intl
Wed 3/11
6:25 pm-4:35 pm
1 stop16h 10m
Belfast City
Sun 3/15
3:10 pm-4:30 pm
1 stop31h 20m
$675
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Fri 4/3
6:40 pm-3:30 pm
1 stop13h 50m
Belfast City
Tue 4/7
6:35 am-4:35 pm
1 stop17h 00m
$689
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Sat 11/15
12:02 pm-4:50 pm
2 stops21h 48m
Belfast City
Mon 11/24
6:30 am-5:25 pm
2 stops17h 55m
$698
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Fri 4/3
6:30 am-4:55 pm
2 stops27h 25m
Belfast City
Tue 4/7
6:30 am-5:37 pm
2 stops18h 07m
$782
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Fri 4/3
4:00 pm-9:20 pm
2 stops22h 20m
Belfast City
Tue 4/7
6:30 am-5:37 pm
2 stops18h 07m
$798
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Fri 4/3
4:00 pm-9:20 pm
2 stops22h 20m
Belfast City
Tue 4/7
6:30 am-6:31 pm
2 stops19h 01m
$870
DenverBelfast
DEN - BFS
DENBFS
Denver Intl
Wed 3/11
5:20 pm-10:20 pm
2 stops23h 00m
Belfast Intl
Sun 3/15
2:10 pm-3:35 pm
2 stops31h 25m
$1,092
DenverBelfast
DEN - BFS
DENBFS
Denver Intl
Sat 11/15
5:45 pm-10:40 pm
2 stops21h 55m
Belfast Intl
Mon 11/24
9:00 pm-6:05 pm
2 stops28h 05m
$1,150
DenverBelfast
DEN - BFS
DENBFS
Denver Intl
Sat 12/13
3:40 pm-10:40 pm
2 stops24h 00m
Belfast Intl
Sat 12/20
5:55 pm-6:05 pm
2 stops31h 10m
$1,229
DenverBelfast
DEN - BHD
DENBHD
Denver Intl
Sun 11/9
8:25 am-9:35 am
3 stops42h 10m
$345
Showing 1-10 of 14 results
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 October 30, 2025.
It’s typically best to fly out from Colorado to Belfast in the morning. Doing so could potentially save you 31% on the flight price compared to flying in the evening, which is usually more expensive.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Colorado to Belfast
See prices for flight routes from nearby airports that may be better suited for you.
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 October 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$608 | Average$771 | FlexibilityNo cancel fee | On-time70% |