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Cheap flights from Northern Ireland to Denver from £349

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Denver departing on 20/10. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Northern Ireland to Denver

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
20:35 - 16:30BHD  Belfast City-DEN Denver Intl
26h 55m1 stop London Heathrow
British Airways Logo
18:35 - 13:35DEN  Denver Intl-BHD Belfast City
12h 00m1 stop London Heathrow
£754British Airways
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 11:20BFS  Belfast Intl-DEN Denver Intl
36h 10m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Calgary
Multiple Airlines Logo
11:35 - 19:15DEN  Denver Intl-BFS Belfast Intl
24h 40m2 stops Toronto Pearson Intl Edinburgh Turnhouse
£761Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
British Airways Logo
20:35 - 16:30BHD  Belfast City-DEN Denver Intl
26h 55m1 stop London Heathrow
British Airways Logo
14:27 - 12:00DEN  Denver Intl-BHD Belfast City
14h 33m2 stops Chicago O'Hare Intl London Heathrow
£764British Airways
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
09:50 - 23:47BHD  Belfast City-DEN Denver Intl
20h 57m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
Multiple Airlines Logo
17:45 - 16:55DEN  Denver Intl-BHD Belfast City
16h 10m2 stops Minneapolis St Paul Amsterdam Schiphol
£766Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:15 - 15:40BFS  Belfast Intl-DEN Denver Intl
16h 25m1 stop Paris Charles de Gaulle
Multiple Airlines Logo
13:00 - 13:45DEN  Denver Intl-BFS Belfast Intl
17h 45m2 stops Salt Lake City Paris Charles de Gaulle
£782Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 11:20BFS  Belfast Intl-DEN Denver Intl
36h 10m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Calgary
Multiple Airlines Logo
09:40 - 13:10DEN  Denver Intl-BFS Belfast Intl
20h 30m3 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main Birmingham
£784Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
07:00 - 11:20BHD  Belfast City-DEN Denver Intl
35h 20m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Calgary
Multiple Airlines Logo
11:35 - 11:40DEN  Denver Intl-BHD Belfast City
17h 05m2 stops Toronto Pearson Intl Edinburgh Turnhouse
£792Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
07:00 - 10:22BHD  Belfast City-DEN Denver Intl
34h 22m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
17:35 - 20:30DEN  Denver Intl-BHD Belfast City
19h 55m1 stop London Heathrow
£803Multiple Airlines
Fri, 9 Oct - Mon, 19 Oct
Multiple Airlines Logo
07:00 - 10:22BHD  Belfast City-DEN Denver Intl
34h 22m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
11:35 - 20:30DEN  Denver Intl-BHD Belfast City
25h 55m2 stops Toronto Pearson Intl London Heathrow
£806Multiple Airlines
Fri, 9 Oct - Mon, 19 Oct
British Airways Logo
09:20 - 15:10BHD  Belfast City-DEN Denver Intl
12h 50m1 stop London Heathrow
British Airways Logo
17:01 - 14:35DEN  Denver Intl-BHD Belfast City
14h 34m1 stop London Heathrow
£808British Airways
Sat, 7 Nov - Wed, 11 Nov

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British Airways flights from Northern Ireland to Denver

Our best British Airways deals on Northern Ireland to Denver flight tickets
British Airways
23 Sept
BHD20:35Belfast City
26h 55m
1 stop
DEN16:30Denver Intl
30 Sept
DEN18:35Denver Intl
12h 00m
1 stop
BHD13:35Belfast City
£754
British Airways
23 Sept
BHD20:35Belfast City
26h 55m
1 stop
DEN16:30Denver Intl
30 Sept
DEN14:27Denver Intl
14h 33m
2 stops
BHD12:00Belfast City
£764
British Airways
4 Nov
BHD08:40Belfast City
13h 30m
1 stop
DEN15:10Denver Intl
8 Nov
DEN17:01Denver Intl
13h 49m
1 stop
BHD13:50Belfast City
£808

momondo Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Denver 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 18 August 2026.
Use the filters below to find and compare flights from Northern Ireland to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Wed 23/9

20:35-16:30

1 stop26h 55m

Denver Intl

Wed 30/9

18:35-13:35

1 stop12h 00m

£754

BelfastDenver

BFS Belfast Intl - DEN Denver Intl

BFSDEN

Belfast Intl

Wed 23/9

06:10-11:20

3 stops36h 10m

Denver Intl

Wed 30/9

11:35-19:15

2 stops24h 40m

£761

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Wed 23/9

20:35-16:30

1 stop26h 55m

Denver Intl

Wed 30/9

14:27-12:00

2 stops14h 33m

£764

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Wed 23/9

09:50-23:47

2 stops20h 57m

Denver Intl

Wed 30/9

17:45-16:55

2 stops16h 10m

£766

BelfastDenver

BFS Belfast Intl - DEN Denver Intl

BFSDEN

Belfast Intl

Wed 23/9

06:15-15:40

1 stop16h 25m

Denver Intl

Wed 30/9

13:00-13:45

2 stops17h 45m

£782

BelfastDenver

BFS Belfast Intl - DEN Denver Intl

BFSDEN

Belfast Intl

Wed 23/9

06:10-11:20

3 stops36h 10m

Denver Intl

Wed 30/9

09:40-13:10

3 stops20h 30m

£784

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Wed 23/9

07:00-11:20

3 stops35h 20m

Denver Intl

Wed 30/9

11:35-11:40

2 stops17h 05m

£792

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Fri 9/10

07:00-10:22

2 stops34h 22m

Denver Intl

Mon 19/10

17:35-20:30

1 stop19h 55m

£803

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Fri 9/10

07:00-10:22

2 stops34h 22m

Denver Intl

Mon 19/10

11:35-20:30

2 stops25h 55m

£806
Fastest return journey

BelfastDenver

BHD Belfast City - DEN Denver Intl

BHDDEN

Belfast City

Sat 7/11

09:20-15:10

1 stop12h 50m

Denver Intl

Wed 11/11

17:01-14:35

1 stop14h 34m

£808

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Cheap Northern Ireland to Denver flight deals and tips

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

Best price found

£349

Fastest flight time

15h 35m

Direct flights

None
The best one-way flight to Denver from Northern Ireland in the past 72 hours is £349. The best return flight deal from Northern Ireland to Denver found on momondo in the last 72 hours is £754.
The fastest flight from Northern Ireland to Denver takes 15h 35m
There are no direct flights from Northern Ireland to Denver. There are no popular flight routes from Northern Ireland to Denver.
Search flight deals

Frequently asked questions about flying from Northern Ireland to Denver

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

    Prices for flights from Northern Ireland to Denver Intl Airport were last updated today.

  • How many operators does momondo search for flights from Northern Ireland to Denver Intl Airport?

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

    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 Northern Ireland to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl Airport 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 Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Northern Ireland to Denver

Compare and see reviews for airlines that fly from Northern Ireland to Denver with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £527Free CancellationRating
6.7
8,174 reviews
Search British Airways flights

Frequently asked questions about flying from Northern Ireland to Denver

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

    Confirm your travel details to search for the latest offers for flights from Northern Ireland to Denver. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Breckenridge
Boulder
Keystone
Dillon
Winter Park
Golden
Longmont
Lakewood
Littleton
Aurora
Broomfield
Englewood
Estes Park
Copper Mountain

Why use momondo?

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

It is quick and easy to find Northern Ireland to Denver 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 Denver that suits you.

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

momondo does allow users to show only those flights to Denver from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Northern Ireland to Denver?

momondo provides multiple filters to help you find the best flight to Denver from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Denver from Northern Ireland. 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.

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