What is the cheapest airline that flies from Colorado to Belfast?

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from Colorado to Belfast

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

Prices for flights from Colorado to Belfast are updated daily.

How many operators does momondo search for flights from Colorado to Belfast?

There is 1 operator available for flights from Colorado to Belfast as of August 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Belfast.

What documentation or ID do you need to fly to Belfast?

The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$379 Cheap Flights from Colorado to Belfast in 2025

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Find the cheapest flights from Colorado to Belfast

Round-trip

One-way

Last minute

Cheap round-trip flights

6:35 pm - 3:05 pmDEN-BHD

13h 30m1 stop

7:00 pm - 4:25 pmBHD-DEN

28h 25m1 stop

$649British Airways

Find Deal

Sat, Oct 11 - Sat, Oct 18

5:44 am - 11:10 amDEN-BHD

22h 26m2 stops

6:50 am - 4:25 pmBHD-DEN

16h 35m1 stop

$654British Airways

Find Deal

Thu, Oct 2 - Sun, Oct 12

9:46 am - 11:10 amDEN-BHD

18h 24m2 stops

11:00 am - 11:41 pmBHD-DEN

19h 41m2 stops

$669American Airlines

Find Deal

Thu, Oct 2 - Sun, Oct 12

12:05 pm - 4:55 pmDEN-BHD

21h 50m2 stops

5:25 pm - 9:41 pmBHD-DEN

35h 16m2 stops

$746Virgin Atlantic

Find Deal

Fri, Oct 3 - Tue, Oct 7

12:05 pm - 4:55 pmDEN-BHD

21h 50m2 stops

6:30 am - 9:41 pmBHD-DEN

22h 11m2 stops

$747Virgin Atlantic

Find Deal

Fri, Oct 3 - Tue, Oct 7

4:40 pm - 4:10 pmDEN-BFS

16h 30m2 stops

7:45 am - 6:55 pmBFS-DEN

18h 10m2 stops

$829

Find Deal

Tue, Sep 16 - Tue, Sep 23

5:06 pm - 6:15 pmDEN-BHD

18h 09m2 stops

9:35 am - 4:25 pmBHD-DEN

13h 50m1 stop

$859American Airlines

Find Deal

Fri, Oct 3 - Tue, Oct 7

8:40 am - 8:50 pmDEN-BHD

29h 10m3 stops

5:50 pm - 5:18 pmBHD-DEN

30h 28m3 stops

$965

Find Deal

Sat, Oct 11 - Sat, Oct 18

6:35 pm - 3:40 pmDEN-BHD

14h 05m1 stop

10:00 am - 4:25 pmBHD-DEN

13h 25m1 stop

$1,198Aer Lingus

Find Deal

Mon, Aug 18 - Wed, Aug 20

6:35 pm - 5:30 pmDEN-BHD

15h 55m1 stop

6:50 am - 5:59 pmBHD-DEN

18h 09m2 stops

$1,247Aer Lingus

Find Deal

Mon, Aug 18 - Wed, Aug 20

Virgin Atlantic flights from Colorado to Belfast

Our best Virgin Atlantic deals on Colorado to Belfast flight tickets

Virgin Atlantic

Oct 3

DEN12:05 pmDenver Intl

21h 50m

2 stops

BHD4:55 pmBelfast City

Oct 7

BHD5:25 pmBelfast City

35h 16m

2 stops

DEN9:41 pmDenver Intl

$746

Find similar

Virgin Atlantic

Oct 3

DEN12:05 pmDenver Intl

21h 50m

2 stops

BHD4:55 pmBelfast City

Oct 7

BHD6:30 amBelfast City

22h 11m

2 stops

DEN9:41 pmDenver Intl

$747

Find similar

American Airlines flights from Colorado to Belfast

Our best American Airlines deals on Colorado to Belfast flight tickets

American Airlines

Oct 2

DEN9:46 amDenver Intl

18h 24m

2 stops

BHD11:10 amBelfast City

Oct 12

BHD11:00 amBelfast City

19h 41m

2 stops

DEN11:41 pmDenver Intl

$669

Find similar

American Airlines

Oct 3

DEN5:06 pmDenver Intl

18h 09m

2 stops

BHD6:15 pmBelfast City

Oct 7

BHD9:35 amBelfast City

13h 50m

1 stop

DEN4:25 pmDenver Intl

$859

Find similar

American Airlines

Oct 3

DEN5:06 pmDenver Intl

20h 39m

2 stops

BHD8:45 pmBelfast City

Oct 7

BHD9:35 amBelfast City

13h 50m

1 stop

DEN4:25 pmDenver Intl

$860

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sat 10/11

6:35 pm-3:05 pm

1 stop13h 30m

Belfast City

Sat 10/18

7:00 pm-4:25 pm

1 stop28h 25m

$649

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

5:44 am-11:10 am

2 stops22h 26m

Belfast City

Sun 10/12

6:50 am-4:25 pm

1 stop16h 35m

$654

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 10/2

9:46 am-11:10 am

2 stops18h 24m

Belfast City

Sun 10/12

11:00 am-11:41 pm

2 stops19h 41m

$669

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 10/3

12:05 pm-4:55 pm

2 stops21h 50m

Belfast City

Tue 10/7

5:25 pm-9:41 pm

2 stops35h 16m

$746

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 10/3

12:05 pm-4:55 pm

2 stops21h 50m

Belfast City

Tue 10/7

6:30 am-9:41 pm

2 stops22h 11m

$747

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 9/16

4:40 pm-4:10 pm

2 stops16h 30m

Belfast Intl

Tue 9/23

7:45 am-6:55 pm

2 stops18h 10m

$829

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 10/3

5:06 pm-6:15 pm

2 stops18h 09m

Belfast City

Tue 10/7

9:35 am-4:25 pm

1 stop13h 50m

$859

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sat 10/11

8:40 am-8:50 pm

3 stops29h 10m

Belfast City

Sat 10/18

5:50 pm-5:18 pm

3 stops30h 28m

$965

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 8/18

6:35 pm-3:40 pm

1 stop14h 05m

Belfast City

Wed 8/20

10:00 am-4:25 pm

1 stop13h 25m

$1,198

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 8/18

6:35 pm-5:30 pm

1 stop15h 55m

Belfast City

Wed 8/20

6:50 am-5:59 pm

2 stops18h 09m

$1,247

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Belfast

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

Prices

Airlines

What is the cheapest day to depart on your flight to Belfast?

The cheapest day to depart from Colorado to Belfast is on a Thursday when prices can be found for as low as $688. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to Belfast for around $1,000.

What is the cheapest time of day to depart on your flight to Belfast?

Our data shows that the cheapest Colorado to Belfast flights are usually those with departure times in the morning. Our users have found flights to Belfast in the morning for as low as $675. Try not to purchase tickets in the afternoon because they tend to be around $745. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Colorado to Belfast flight deals and tips

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

Best Price Found	$379
Fastest flight time	11h 40m
Direct flights	None
Airports in Belfast	2 airports

The best one-way flight to Belfast from Colorado in the past 72 hours is $379. The best round-trip flight deal from Colorado to Belfast found on momondo in the last 72 hours is $649.

The fastest flight from Colorado to Belfast takes 11h 40m

There are no direct flights from Colorado to Belfast. Popular non-direct routes for this connection are Denver Intl Airport - Belfast City Airport and Denver Intl Airport - Belfast Intl Airport.

There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)

Search flight deals

When did momondo last update prices for flights from Colorado to Belfast?
Prices for flights from Colorado to Belfast are updated daily.
How many operators does momondo search for flights from Colorado to Belfast?
There is 1 operator available for flights from Colorado to Belfast as of August 2025.
How old do you have to be to fly from Colorado to Belfast?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Belfast.
What documentation or ID do you need to fly to Belfast?
The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Belfast

Compare and see reviews for airlines that fly from Colorado to Belfast with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $608	Free Cancellation	Rating 6.6 7,235 reviews		Search British Airways flights

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 enables you to select and highlight flights to Belfast from Colorado with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Colorado.

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

Yes. momondo can track prices for Colorado to Belfast flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.