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Cheap flights from Denver to Belfast from £270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Belfast departing on 7/9. 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 Denver to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
17:01 - 13:55DEN  Denver Intl-BHD Belfast City
13h 54m1 stop London Heathrow
British Airways Logo
17:40 - 15:10BHD  Belfast City-DEN Denver Intl
28h 30m1 stop London Heathrow
£703British Airways
Sun, 15 Nov - Wed, 18 Nov
British Airways Logo
17:01 - 13:55DEN  Denver Intl-BHD Belfast City
13h 54m1 stop London Heathrow
British Airways Logo
09:15 - 15:10BHD  Belfast City-DEN Denver Intl
12h 55m1 stop London Heathrow
£710British Airways
Sun, 31 Jan - Wed, 3 Feb
British Airways Logo
17:01 - 13:50DEN  Denver Intl-BHD Belfast City
13h 49m1 stop London Heathrow
British Airways Logo
08:40 - 15:10BHD  Belfast City-DEN Denver Intl
13h 30m1 stop London Heathrow
£711British Airways
Sun, 15 Nov - Wed, 18 Nov
Multiple Airlines Logo
16:40 - 18:00DEN  Denver Intl-BFS Belfast Intl
19h 20m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
20:50 - 20:27BFS  Belfast Intl-DEN Denver Intl
30h 37m3 stops London Gatwick Zurich Montreal Pierre Elliott Trudeau Intl
£720Multiple Airlines
Wed, 28 Oct - Mon, 2 Nov
British Airways Logo
18:01 - 14:35DEN  Denver Intl-BHD Belfast City
14h 34m1 stop London Heathrow
British Airways Logo
19:25 - 15:10BHD  Belfast City-DEN Denver Intl
26h 45m1 stop London Heathrow
£726British Airways
Wed, 28 Oct - Mon, 2 Nov
British Airways Logo
18:09 - 14:35DEN  Denver Intl-BHD Belfast City
14h 26m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
19:25 - 15:10BHD  Belfast City-DEN Denver Intl
26h 45m1 stop London Heathrow
£729British Airways
Wed, 28 Oct - Mon, 2 Nov
British Airways Logo
18:01 - 14:35DEN  Denver Intl-BHD Belfast City
14h 34m1 stop London Heathrow
British Airways Logo
09:25 - 15:10BHD  Belfast City-DEN Denver Intl
12h 45m1 stop London Heathrow
£735British Airways
Wed, 28 Oct - Mon, 2 Nov
Multiple Airlines Logo
16:40 - 19:45DEN  Denver Intl-BFS Belfast Intl
21h 05m3 stops Reykjavik Keflavik Intl Dublin Manchester
Multiple Airlines Logo
20:50 - 20:27BFS  Belfast Intl-DEN Denver Intl
30h 37m3 stops London Gatwick Zurich Montreal Pierre Elliott Trudeau Intl
£737Multiple Airlines
Wed, 28 Oct - Mon, 2 Nov
British Airways Logo
18:40 - 15:40DEN  Denver Intl-BHD Belfast City
14h 00m1 stop London Heathrow
British Airways Logo
13:45 - 16:25BHD  Belfast City-DEN Denver Intl
33h 40m1 stop London Heathrow
£755British Airways
Wed, 9 Sep - Tue, 6 Oct
British Airways Logo
15:15 - 15:20DEN  Denver Intl-BHD Belfast City
17h 05m2 stops Dallas/Fort Worth London Heathrow
British Airways Logo
09:40 - 16:25BHD  Belfast City-DEN Denver Intl
13h 45m1 stop London Heathrow
£757British Airways
Tue, 8 Sep - Tue, 6 Oct

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British Airways flights from Denver to Belfast

Our best British Airways deals on Denver to Belfast flight tickets
British Airways
15 Nov
DEN17:01Denver Intl
13h 54m
1 stop
BHD13:55Belfast City
18 Nov
BHD17:40Belfast City
28h 30m
1 stop
DEN15:10Denver Intl
£703
British Airways
31 Jan
DEN17:01Denver Intl
13h 54m
1 stop
BHD13:55Belfast City
3 Feb
BHD09:15Belfast City
12h 55m
1 stop
DEN15:10Denver Intl
£710
British Airways
15 Nov
DEN17:01Denver Intl
13h 49m
1 stop
BHD13:50Belfast City
18 Nov
BHD08:40Belfast City
13h 30m
1 stop
DEN15:10Denver Intl
£711

KLM flights from Denver to Belfast

Our best KLM deals on Denver to Belfast flight tickets
KLM
8 Sept
DEN06:35Denver Intl
19h 45m
2 stops
BHD09:20Belfast City
4 Oct
BHD17:30Belfast City
27h 27m
2 stops
DEN13:57Denver Intl
£809
KLM
23 Aug
DEN11:05Denver Intl
15h 15m
2 stops
BHD09:20Belfast City
1 Sept
BHD17:30Belfast City
28h 53m
2 stops
DEN15:23Denver Intl
£817
KLM
7 Sept
DEN16:00Denver Intl
17h 55m
2 stops
BHD16:55Belfast City
6 Oct
BHD17:30Belfast City
29h 19m
2 stops
DEN15:49Denver Intl
£839

momondo Fare Finder

 
Customise your flight search to find flights from Denver 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, momondo users made 279,928 searches. Data last updated 12 August 2026.
Use the filters below to find and compare flights from Denver to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 15/11

17:01-13:55

1 stop13h 54m

Belfast City

Wed 18/11

17:40-15:10

1 stop28h 30m

£703
Fastest return journey

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 31/1

17:01-13:55

1 stop13h 54m

Belfast City

Wed 3/2

09:15-15:10

1 stop12h 55m

£710

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 15/11

17:01-13:50

1 stop13h 49m

Belfast City

Wed 18/11

08:40-15:10

1 stop13h 30m

£711

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Wed 28/10

16:40-18:00

2 stops19h 20m

Belfast Intl

Mon 2/11

20:50-20:27

3 stops30h 37m

£720

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 28/10

18:01-14:35

1 stop14h 34m

Belfast City

Mon 2/11

19:25-15:10

1 stop26h 45m

£726

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 28/10

18:09-14:35

2 stops14h 26m

Belfast City

Mon 2/11

19:25-15:10

1 stop26h 45m

£729

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 28/10

18:01-14:35

1 stop14h 34m

Belfast City

Mon 2/11

09:25-15:10

1 stop12h 45m

£735

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Wed 28/10

16:40-19:45

3 stops21h 05m

Belfast Intl

Mon 2/11

20:50-20:27

3 stops30h 37m

£737

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Wed 9/9

18:40-15:40

1 stop14h 00m

Belfast City

Tue 6/10

13:45-16:25

1 stop33h 40m

£755

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Tue 8/9

15:15-15:20

2 stops17h 05m

Belfast City

Tue 6/10

09:40-16:25

1 stop13h 45m

£757

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Denver 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

What is the cheapest airline that flies from Denver Intl to Belfast?

Delta is the most popular carrier operating from Denver Intl to Belfast

Cheap Denver to Belfast flight deals and tips

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

Fastest flight time

13h 49m

Direct flights

None
The fastest flight from Denver to Belfast takes 13h 49m
There are no direct flights from Denver to Belfast. There are no popular flight routes from Denver to Belfast.
Search flight deals

Frequently asked questions about flying from Denver to Belfast

  • How far is Denver Intl to Belfast by plane?

    Denver Intl and Belfast are 4363.2 mi apart from one another. In terms of flight time, this usually takes a little over 13h 49m.

  • When did momondo last update prices for flights from Denver Intl Airport to Belfast?

    Prices for flights from Denver Intl Airport to Belfast are updated daily.

  • How old do you have to be to fly from Denver Intl Airport to Belfast?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Belfast.

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

    The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find Denver to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Yes. All flights to Belfast from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Denver 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 Denver to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Denver to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport