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Northern Ireland

$300+ Cheap flights from Denver (DEN) to Northern Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BFS
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheap flight deals from Denver to Northern Ireland

Best flights from Denver to Northern Ireland
Discover carefully curated flight deals from Denver to Northern Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2025.

This oojo deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:25 pmDEN - BHD
1 stop16h 10mBritish Airways
Fri 2/276:45 amBHD - DEN
1 stop15h 45mBritish Airways
Deal found 12/20$648
This American Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/182:52 pmDEN - BHD
2 stops16h 23mAmerican Airlines
Fri 2/278:45 amBHD - DEN
2 stops20h 51mAmerican Airlines
Deal found 12/20$686
This Mytrip deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:40 pmDEN - BFS
2 stops21h 00mMultiple Airlines
Sun 5/248:20 pmBFS - DEN
2 stops26h 20mMultiple Airlines
Deal found 12/21$1,030
This British Airways deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/205:25 pmDEN - BHD
1 stop13h 50mBritish Airways
Tue 2/245:15 pmBHD - DEN
1 stop29h 15mBritish Airways
Deal found 12/20$673
This Cheapflightsfares deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:40 pmDEN - BHD
1 stop19h 05mBritish Airways
Tue 4/219:35 amBHD - DEN
1 stop13h 55mBritish Airways
Deal found 12/20$674
This oojo deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:51 pmDEN - BHD
2 stops17h 44mBritish Airways
Sat 4/257:00 pmBHD - DEN
1 stop28h 30mBritish Airways
Deal found 12/20$685
This Mytrip deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/34:20 pmDEN - BFS
2 stops23h 15mMultiple Airlines
Tue 2/106:30 amBFS - DEN
2 stops18h 35mMultiple Airlines
Deal found 12/20$1,085
This Mytrip deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:55 pmDEN - BFS
2 stops20h 40mMultiple Airlines
Sun 5/248:20 pmBFS - DEN
2 stops26h 20mMultiple Airlines
Deal found 12/21$1,167

Find flight deals from Denver to Northern Ireland

Keep the following information in mind while searching for Denver to Northern Ireland flight deals. Data was last updated December 22, 2025.

Round-trip from

$648
(oojo)

One-way from

$300
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$1,153
From Denver Intl to Northern Ireland
Search Deals
One-way flight from Denver Intl to Northern Ireland
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Northern Ireland 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, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2025.
Use the filters below to find and compare flights from Denver to Northern Ireland that are best for you.

Fly from

Denver

Fly to

Northern Ireland

Route

Depart

Return

Price

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 2/18

5:25 pm-4:35 pm

1 stop16h 10m

Belfast City

Fri 2/27

6:45 am-3:30 pm

1 stop15h 45m

$648

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 2/20

5:25 pm-2:15 pm

1 stop13h 50m

Belfast City

Tue 2/24

5:15 pm-3:30 pm

1 stop29h 15m

$673

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 4/16

6:40 pm-8:45 pm

1 stop19h 05m

Belfast City

Tue 4/21

9:35 am-4:30 pm

1 stop13h 55m

$674

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 4/15

2:51 pm-3:35 pm

2 stops17h 44m

Belfast City

Sat 4/25

7:00 pm-4:30 pm

1 stop28h 30m

$685

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 2/18

2:52 pm-2:15 pm

2 stops16h 23m

Belfast City

Fri 2/27

8:45 am-10:36 pm

2 stops20h 51m

$686

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 5/4

4:40 pm-8:40 pm

2 stops21h 00m

Belfast Intl

Sun 5/24

8:20 pm-3:40 pm

2 stops26h 20m

$1,030

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 2/3

4:20 pm-10:35 pm

2 stops23h 15m

Belfast Intl

Tue 2/10

6:30 am-6:05 pm

2 stops18h 35m

$1,085

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 5/10

7:55 pm-11:35 pm

2 stops20h 40m

Belfast Intl

Sun 5/24

8:20 pm-3:40 pm

2 stops26h 20m

$1,167

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 2/3

11:00 am-11:55 pm

3 stops53h 55m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Best time to book a flight from Denver to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Northern Ireland

What is the cheapest time of day to fly from DEN to NIR?

Find hourly flight availability from Denver to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

It’s optimal to fly from Denver to Northern Ireland in the morning. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated December 22, 2025.
See what other customers who have flown with British Airways from Denver to Northern Ireland have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,602 reviews

Food

6.4

Boarding

6.9

Crew

7.6

Overall

6.7

Entertainment

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,602 reviews
British Airways
6.7
Okay
7,602 reviews

Food

6.4

Boarding

6.9

Crew

7.6

Overall

6.7

Entertainment

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Denver to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Northern Ireland?

    For a flight from Denver to Northern Ireland, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • How long is the flight from Denver to Northern Ireland?

    Airlines like British Airways fly from Denver to Northern Ireland in about 16h 10m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 4347 mi.

  • Can I find deals for flights from Denver to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Denver to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Northern Ireland.

  • Can I find deals for business class flights from Denver to Northern Ireland?

    Yes. Cheapflights offers flight deals from Denver to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Denver to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Denver to Northern Ireland

Discover the top airline that operate flights from Denver to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$654Average$917FlexibilityNo cancel feeOn-time70%

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