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Cheap flights from Colorado to Belfast from $395

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Belfast departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Colorado to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:01 pm - 1:55 pmDEN  Denver Intl-BHD Belfast City
13h 54m1 stop London Heathrow
British Airways Logo
5:40 pm - 3:10 pmBHD  Belfast City-DEN Denver Intl
28h 30m1 stop London Heathrow
$950British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:01 pm - 1:55 pmDEN  Denver Intl-BHD Belfast City
13h 54m1 stop London Heathrow
British Airways Logo
6:35 am - 3:10 pmBHD  Belfast City-DEN Denver Intl
15h 35m1 stop London Heathrow
$950British Airways
Sun, Nov 15 - Wed, Nov 18
British Airways Logo
5:01 pm - 1:55 pmDEN  Denver Intl-BHD Belfast City
13h 54m1 stop London Heathrow
British Airways Logo
9:15 am - 3:10 pmBHD  Belfast City-DEN Denver Intl
12h 55m1 stop London Heathrow
$959British Airways
Sun, Jan 31 - Wed, Feb 3
British Airways Logo
6:01 pm - 2:35 pmDEN  Denver Intl-BHD Belfast City
14h 34m1 stop London Heathrow
British Airways Logo
7:25 pm - 3:10 pmBHD  Belfast City-DEN Denver Intl
26h 45m1 stop London Heathrow
$980British Airways
Wed, Oct 28 - Mon, Nov 2
British Airways Logo
6:09 pm - 2:35 pmDEN  Denver Intl-BHD Belfast City
14h 26m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
7:25 pm - 3:10 pmBHD  Belfast City-DEN Denver Intl
26h 45m1 stop London Heathrow
$984British Airways
Wed, Oct 28 - Mon, Nov 2
KLM Logo
11:05 am - 9:20 amDEN  Denver Intl-BHD Belfast City
15h 15m2 stops Minneapolis St Paul Amsterdam Schiphol
KLM Logo
5:30 pm - 3:24 pmBHD  Belfast City-DEN Denver Intl
28h 54m2 stops Amsterdam Schiphol Minneapolis St Paul
$1,073KLM
Mon, Sep 7 - Mon, Sep 14
Delta Logo
6:35 am - 9:20 amDEN  Denver Intl-BHD Belfast City
19h 45m2 stops New York John F Kennedy Intl Amsterdam Schiphol
Delta Logo
5:30 pm - 3:24 pmBHD  Belfast City-DEN Denver Intl
28h 54m2 stops Amsterdam Schiphol Minneapolis St Paul
$1,073Delta
Tue, Sep 8 - Mon, Sep 14
American Airlines Logo
12:23 pm - 12:55 pmDEN  Denver Intl-BHD Belfast City
17h 32m2 stops Chicago O'Hare Intl London Heathrow
American Airlines Logo
6:30 am - 4:57 pmBHD  Belfast City-DEN Denver Intl
17h 27m2 stops London Heathrow Chicago O'Hare Intl
$1,089American Airlines
Mon, Aug 31 - Fri, Sep 11
American Airlines Logo
2:21 pm - 3:30 pmDEN  Denver Intl-BHD Belfast City
18h 09m2 stops Chicago O'Hare Intl London Heathrow
American Airlines Logo
6:30 am - 5:42 pmBHD  Belfast City-DEN Denver Intl
18h 12m2 stops London Heathrow Dallas/Fort Worth
$1,090American Airlines
Mon, Aug 31 - Fri, Sep 11
American Airlines Logo
12:23 pm - 12:55 pmDEN  Denver Intl-BHD Belfast City
17h 32m2 stops Chicago O'Hare Intl London Heathrow
American Airlines Logo
6:30 am - 4:57 pmBHD  Belfast City-DEN Denver Intl
17h 27m2 stops London Heathrow Chicago O'Hare Intl
$1,090American Airlines
Mon, Aug 31 - Fri, Sep 11

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American Airlines flights from Colorado to Belfast City Airport

Our best American Airlines deals on Colorado to Belfast City Airport flight tickets
American Airlines
Aug 31
DEN12:23 pmDenver Intl
17h 32m
2 stops
BHD12:55 pmBelfast City
Sep 11
BHD6:30 amBelfast City
17h 27m
2 stops
DEN4:57 pmDenver Intl
$1,089
American Airlines
Aug 31
DEN2:21 pmDenver Intl
18h 09m
2 stops
BHD3:30 pmBelfast City
Sep 11
BHD6:30 amBelfast City
18h 12m
2 stops
DEN5:42 pmDenver Intl
$1,090
American Airlines
Oct 17
DEN2:29 pmDenver Intl
17h 36m
2 stops
BHD3:05 pmBelfast City
Oct 24
BHD9:35 amBelfast City
17h 47m
2 stops
DEN8:22 pmDenver Intl
$1,123

British Airways flights from Colorado to Belfast City Airport

Our best British Airways deals on Colorado to Belfast City Airport flight tickets
British Airways
Nov 15
DEN5:01 pmDenver Intl
13h 54m
1 stop
BHD1:55 pmBelfast City
Nov 18
BHD6:35 amBelfast City
15h 35m
1 stop
DEN3:10 pmDenver Intl
$950
British Airways
Jan 31
DEN5:01 pmDenver Intl
13h 54m
1 stop
BHD1:55 pmBelfast City
Feb 3
BHD9:15 amBelfast City
12h 55m
1 stop
DEN3:10 pmDenver Intl
$959
British Airways
Oct 28
DEN6:01 pmDenver Intl
14h 34m
1 stop
BHD2:35 pmBelfast City
Nov 2
BHD7:25 pmBelfast City
26h 45m
1 stop
DEN3:10 pmDenver Intl
$980

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Belfast City Airport 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, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Colorado to Belfast City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 11/15

5:01 pm-1:55 pm

1 stop13h 54m

Belfast City

Wed 11/18

5:40 pm-3:10 pm

1 stop28h 30m

$950

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 11/15

5:01 pm-1:55 pm

1 stop13h 54m

Belfast City

Wed 11/18

6:35 am-3:10 pm

1 stop15h 35m

$950
Quickest round-trip

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 1/31

5:01 pm-1:55 pm

1 stop13h 54m

Belfast City

Wed 2/3

9:15 am-3:10 pm

1 stop12h 55m

$959

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 10/28

6:01 pm-2:35 pm

1 stop14h 34m

Belfast City

Mon 11/2

7:25 pm-3:10 pm

1 stop26h 45m

$980

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 10/28

6:09 pm-2:35 pm

2 stops14h 26m

Belfast City

Mon 11/2

7:25 pm-3:10 pm

1 stop26h 45m

$984

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 9/7

11:05 am-9:20 am

2 stops15h 15m

Belfast City

Mon 9/14

5:30 pm-3:24 pm

2 stops28h 54m

$1,073

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Tue 9/8

6:35 am-9:20 am

2 stops19h 45m

Belfast City

Mon 9/14

5:30 pm-3:24 pm

2 stops28h 54m

$1,073

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 8/31

12:23 pm-12:55 pm

2 stops17h 32m

Belfast City

Fri 9/11

6:30 am-4:57 pm

2 stops17h 27m

$1,089

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 8/31

2:21 pm-3:30 pm

2 stops18h 09m

Belfast City

Fri 9/11

6:30 am-5:42 pm

2 stops18h 12m

$1,090

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 8/31

12:23 pm-12:55 pm

2 stops17h 32m

Belfast City

Fri 9/11

6:30 am-4:57 pm

2 stops17h 27m

$1,090

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Colorado to Belfast City Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Colorado to Belfast City Airport flights?

You could potentially save up to 31% on your flight if you consider stops on a Colorado to Belfast City Airport flight.

Cheap Colorado to Belfast City Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Belfast City Airport

Fastest flight time

13h 54m

Direct flights

None
The fastest flight from Colorado to Belfast City Airport takes 13h 54m
There are no direct flights from Colorado to Belfast City Airport. There are no popular flight routes from Colorado to Belfast City Airport.
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Frequently asked questions about flying from Colorado to Belfast City Airport

  • When did momondo last update prices for flights from Colorado to Belfast City Airport?

    Prices for flights from Colorado to Belfast City Airport are updated daily.

  • How old do you have to be to fly from Colorado to Belfast City Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Belfast City Airport.

  • What documentation or ID do you need to fly to Belfast City Airport?

    The necessary travel and health documents for your Belfast City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newcastle
Bangor

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Belfast?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Colorado to Belfast for you.

Can I find flights from Colorado to Belfast with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Colorado to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Colorado to Belfast?

Once all potential Colorado to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Belfast City Airport trip

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