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Cheap flights from Denver to Belfast from £638

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Belfast departing on 1/9. 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
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Find the cheapest flights from Denver to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:40 - 23:10
DEN
-
BFS
23h 30m
2 stops
Multiple Airlines Logo
07:40 - 12:40
BFS
-
DEN
36h 00m
2 stops
£638Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
Multiple Airlines Logo
20:10 - 23:10
DEN
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
21:40 - 11:20
BFS
-
DEN
44h 40m
3 stops
£642Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
Multiple Airlines Logo
16:40 - 19:30
DEN
-
BFS
19h 50m
2 stops
Multiple Airlines Logo
07:10 - 19:00
BFS
-
DEN
18h 50m
2 stops
£645Multiple Airlines
Thu, 1 Oct - Sun, 11 Oct
British Airways Logo
18:40 - 15:20
DEN
-
BHD
13h 40m
1 stop
British Airways Logo
09:35 - 16:25
BHD
-
DEN
13h 50m
1 stop
£691British Airways
Tue, 15 Sep - Thu, 8 Oct
Multiple Airlines Logo
20:10 - 17:50
DEN
-
BHD
14h 40m
2 stops
Multiple Airlines Logo
10:45 - 12:40
BHD
-
DEN
32h 55m
2 stops
£696Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
Multiple Airlines Logo
20:10 - 19:50
DEN
-
BFS
16h 40m
3 stops
Multiple Airlines Logo
21:40 - 11:20
BFS
-
DEN
44h 40m
3 stops
£702Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
British Airways Logo
18:40 - 14:35
DEN
-
BHD
12h 55m
1 stop
British Airways Logo
20:35 - 16:30
BHD
-
DEN
26h 55m
1 stop
£707British Airways
Sun, 13 Sep - Thu, 17 Sep
British Airways Logo
18:40 - 14:35
DEN
-
BHD
12h 55m
1 stop
British Airways Logo
20:35 - 16:30
BHD
-
DEN
26h 55m
1 stop
£708British Airways
Sun, 13 Sep - Thu, 17 Sep
American Airlines Logo
10:31 - 10:45
DEN
-
BHD
17h 14m
2 stops
American Airlines Logo
06:30 - 16:25
BHD
-
DEN
16h 55m
1 stop
£709American Airlines
Tue, 15 Sep - Thu, 8 Oct
American Airlines Logo
14:27 - 15:20
DEN
-
BHD
17h 53m
2 stops
American Airlines Logo
09:35 - 21:38
BHD
-
DEN
19h 03m
2 stops
£717American Airlines
Tue, 15 Sep - Thu, 8 Oct

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Delta flights from Denver to Belfast

Our best Delta deals on Denver to Belfast flight tickets
Delta
1 Sept
DEN12:05Denver Intl
21h 50m
2 stops
BHD16:55Belfast City
14 Sept
BHD09:50Belfast City
43h 45m
2 stops
DEN22:35Denver Intl
£776
Delta
31 Aug
DEN11:05Denver Intl
15h 15m
2 stops
BHD09:20Belfast City
10 Sept
BHD17:30Belfast City
33h 28m
2 stops
DEN19:58Denver Intl
£780
Delta
2 Sept
DEN14:54Denver Intl
19h 01m
2 stops
BHD16:55Belfast City
10 Sept
BHD09:50Belfast City
38h 48m
2 stops
DEN17:38Denver Intl
£799

KLM flights from Denver to Belfast

Our best KLM deals on Denver to Belfast flight tickets
KLM
31 Aug
DEN09:39Denver Intl
16h 41m
2 stops
BHD09:20Belfast City
13 Sept
BHD17:30Belfast City
28h 54m
2 stops
DEN15:24Denver Intl
£840
KLM
9 Jul
DEN10:25Denver Intl
15h 55m
2 stops
BHD09:20Belfast City
13 Jul
BHD17:30Belfast City
30h 57m
2 stops
DEN17:27Denver Intl
£870
KLM
18 Jun
DEN09:19Denver Intl
17h 01m
2 stops
BHD09:20Belfast City
28 Jun
BHD17:45Belfast City
28h 53m
2 stops
DEN15:38Denver Intl
£2,721

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 14 June 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 - BFS

DENBFS

Denver Intl

Tue 1/9

16:40-23:10

2 stops23h 30m

Belfast Intl

Sat 12/9

07:40-12:40

2 stops36h 00m

£638

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 1/9

20:10-23:10

2 stops20h 00m

Belfast Intl

Sat 12/9

21:40-11:20

3 stops44h 40m

£642

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Thu 1/10

16:40-19:30

2 stops19h 50m

Belfast Intl

Sun 11/10

07:10-19:00

2 stops18h 50m

£645
Fastest return journey

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 15/9

18:40-15:20

1 stop13h 40m

Belfast City

Thu 8/10

09:35-16:25

1 stop13h 50m

£691

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 1/9

20:10-17:50

2 stops14h 40m

Belfast City

Sat 12/9

10:45-12:40

2 stops32h 55m

£696

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 1/9

20:10-19:50

3 stops16h 40m

Belfast Intl

Sat 12/9

21:40-11:20

3 stops44h 40m

£702

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 13/9

18:40-14:35

1 stop12h 55m

Belfast City

Thu 17/9

20:35-16:30

1 stop26h 55m

£707

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Sun 13/9

18:40-14:35

1 stop12h 55m

Belfast City

Thu 17/9

20:35-16:30

1 stop26h 55m

£708

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 15/9

10:31-10:45

2 stops17h 14m

Belfast City

Thu 8/10

06:30-16:25

1 stop16h 55m

£709

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 15/9

14:27-15:20

2 stops17h 53m

Belfast City

Thu 8/10

09:35-21:38

2 stops19h 03m

£717

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

12h 55m

Direct flights

None
The fastest flight from Denver to Belfast takes 12h 55m
There are no direct flights from Denver to Belfast. There are no popular flight routes from Denver to Belfast.
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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 12h 55m.

  • 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.

Frequently asked questions about flying from Denver to Belfast

  • How do I get Price Alerts for flights from Denver to Belfast?

    Search flight deals from Denver to Belfast. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Denver to Belfast with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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