What is the cheapest month to book a flight from Denver to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from Denver to Northern Ireland (average of £67). Flying from Denver to Northern Ireland in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest month to fly from Denver to Northern Ireland?

Flights from Denver to Northern Ireland lean towards being more expensive in December. Prices are generally better when you fly from Denver to Northern Ireland in February, with the cheapest ticket starting at £480.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Northern Ireland as you normally would.

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

Located just 18.5 mi from the city center, Denver Intl (DEN) is the airport most travelers will use when flying to Northern Ireland from Denver.

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 holiday 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.

£276+ Flights from Denver to Northern Ireland

Cheap flight deals from Denver to Northern Ireland

Round-trip from	£452
One-way from	£276
Popular in	December
Cheapest in	February
Average price	£777

2/10-6/10
4 total stops
63h 45m total
Denver to Northern Ireland

Search Deals

British Airways
19/8
2 total stops
15h 31m total
Denver to Northern Ireland

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£54 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease (£37 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Denver to Northern Ireland

Cheapest flights from Denver to Northern Ireland
Explore the most affordable flight options available from Denver to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Thu 2/1016:40DEN - BFS

2 stops23h 50mMultiple Airlines

Mon 6/1010:00BFS - DEN

2 stops39h 55mMultiple Airlines

Deal found 3/7£452

Thu 2/1012:32DEN - BHD

2 stops15h 38mBritish Airways

Mon 6/1012:15BHD - DEN

2 stops18h 26mBritish Airways

Deal found 3/7£485

Thu 2/1012:32DEN - BHD

2 stops15h 38mAmerican Airlines

Sun 12/1011:00BHD - DEN

2 stops19h 41mAmerican Airlines

Deal found 2/7£495

Fri 3/1016:00DEN - BHD

2 stops22h 15mVirgin Atlantic

Tue 7/1006:30BHD - DEN

2 stops18h 52mVirgin Atlantic

Deal found 3/7£552

Wed 30/715:55DEN - BHD

2 stops18h 00mDelta

Wed 6/806:30BHD - DEN

2 stops23h 19mDelta

Deal found 1/7£640

Wed 9/711:25DEN - BHD

2 stops26h 45mMultiple Airlines

Wed 23/718:50BHD - DEN

2 stops47h 38mMultiple Airlines

Deal found 2/7£746

Wed 23/718:35DEN - BHD

1 stop17h 05mIberia

Tue 29/706:35BHD - DEN

2 stops23h 12mIberia

Deal found 1/7£857

Mon 4/818:35DEN - BHD

1 stop15h 55mAer Lingus

Wed 13/809:50BHD - DEN

2 stops15h 09mAer Lingus

Deal found 1/7£938

Thu 31/717:40DEN - BHD

2 stops20h 25mKLM

Wed 6/806:30BHD - DEN

2 stops19h 35mKLM

Deal found 1/7£947

Best flights from Denver to Northern Ireland
Discover carefully curated flight deals from Denver to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 July 2025.

Thu 2/1016:40DEN - BFS

2 stops23h 50mMultiple Airlines

Mon 6/1010:00BFS - DEN

2 stops39h 55mMultiple Airlines

Deal found 3/7£452

Thu 2/1012:32DEN - BHD

2 stops15h 38mBritish Airways

Mon 6/1012:15BHD - DEN

2 stops18h 26mBritish Airways

Deal found 3/7£485

Thu 2/1012:32DEN - BHD

2 stops15h 38mAmerican Airlines

Sun 12/1011:00BHD - DEN

2 stops19h 41mAmerican Airlines

Deal found 2/7£495

Fri 3/1010:24DEN - BHD

2 stops27h 51mDelta

Tue 7/1006:30BHD - DEN

2 stops23h 28mDelta

Deal found 2/7£552

Wed 23/718:35DEN - BHD

1 stop17h 05mIberia

Tue 29/706:35BHD - DEN

2 stops23h 12mIberia

Deal found 1/7£857

Mon 4/818:35DEN - BHD

1 stop15h 55mAer Lingus

Wed 13/809:50BHD - DEN

2 stops15h 09mAer Lingus

Deal found 1/7£938

Thu 31/717:40DEN - BHD

2 stops20h 25mKLM

Wed 6/806:30BHD - DEN

2 stops19h 35mKLM

Deal found 1/7£947

Thu 2/1016:40DEN - BHD

2 stops20h 45mMultiple Airlines

Mon 6/1018:45BHD - DEN

3 stops31h 10mMultiple Airlines

Deal found 3/7£932

Last-minute flights from Denver to Northern Ireland
Discover last-minute flight deals from Denver to Northern Ireland. Data last updated 4 July 2025 and is based on user searches.

Wed 9/711:25DEN - BHD

2 stops26h 45mMultiple Airlines

Wed 23/718:50BHD - DEN

2 stops47h 38mMultiple Airlines

Deal found 2/7£746

Wed 9/718:35DEN - BHD

1 stop11h 55mBritish Airways

Wed 23/710:00BHD - DEN

1 stop13h 25mBritish Airways

Deal found 2/7£959

Wed 9/707:45DEN - BFS

2 stops22h 15mMultiple Airlines

Wed 23/706:00BFS - DEN

3 stops36h 27mMultiple Airlines

Deal found 2/7£1,091

Wed 23/718:35DEN - BHD

1 stop17h 05mIberia

Tue 29/706:35BHD - DEN

2 stops23h 12mIberia

Deal found 1/7£857

Wed 30/718:35DEN - BHD

1 stop31h 45mBritish Airways

Wed 6/818:15BHD - DEN

1 stop29h 10mBritish Airways

Deal found 1/7£602

Wed 30/715:55DEN - BHD

2 stops18h 00mDelta

Wed 6/806:30BHD - DEN

2 stops23h 19mDelta

Deal found 1/7£640

Thu 31/717:40DEN - BHD

2 stops20h 25mKLM

Wed 6/806:30BHD - DEN

2 stops19h 35mKLM

Deal found 1/7£947

Mon 4/809:40DEN - BFS

3 stops30h 15mMultiple Airlines

Wed 13/805:45BFS - DEN

2 stops21h 15mMultiple Airlines

Deal found 1/7£744

Mon 4/818:35DEN - BHD

1 stop15h 55mAer Lingus

Wed 13/809:50BHD - DEN

2 stops15h 09mAer Lingus

Deal found 1/7£938

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Thu 2/10

16:40-23:30

2 stops23h 50m

Belfast Intl

Mon 6/10

10:00-18:55

2 stops39h 55m

£452

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 2/10

12:32-11:10

2 stops15h 38m

Belfast City

Mon 6/10

12:15-23:41

2 stops18h 26m

£485

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 2/10

12:32-11:10

2 stops15h 38m

Belfast City

Sun 12/10

11:00-23:41

2 stops19h 41m

£495

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 3/10

16:00-21:15

2 stops22h 15m

Belfast City

Tue 7/10

06:30-18:22

2 stops18h 52m

£552

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 30/7

15:55-16:55

2 stops18h 00m

Belfast City

Wed 6/8

06:30-22:49

2 stops23h 19m

£640

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Wed 23/7

18:35-18:40

1 stop17h 05m

Belfast City

Fri 1/8

06:35-23:44

2 stops24h 09m

£857

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 2/10

16:40-20:25

2 stops20h 45m

Belfast City

Mon 6/10

18:45-18:55

3 stops31h 10m

£932

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 4/8

18:35-17:30

1 stop15h 55m

Belfast City

Wed 13/8

09:50-17:59

2 stops15h 09m

£938

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Thu 31/7

17:40-21:05

2 stops20h 25m

Belfast City

Wed 6/8

06:30-19:05

2 stops19h 35m

£947

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 19/8

12:04-10:35

2 stops15h 31m

£276

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 11 results

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 return 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

How much does it cost for a return flight from Denver to Northern Ireland?

Reviews of airlines servicing Northern Ireland

Read reviews from past customers who have flown with Delta, KLM, andAmerican Airlines from Denver to Northern Ireland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,970 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,363 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aer Lingus

7.1

Good

1,144 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Iberia

7.0

Good

2,813 reviews

Delta

8.0

Very Good

7,970 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly from for flights from Denver to Northern Ireland?
Located just 18.5 mi from the city center, Denver Intl (DEN) is the airport most travelers will use when flying to Northern Ireland from Denver.
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 holiday 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.
What is the cheapest month to book a flight from Denver to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Denver to Northern Ireland (average of £67). Flying from Denver to Northern Ireland in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Denver to Northern Ireland

Direct flights to United Kingdom

Fly with Cheapflights

How does Cheapflights help users find flights from Denver to Northern Ireland?

Cheapflights helps you search for flights from Denver to Northern Ireland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Denver to Northern Ireland?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Denver to Northern Ireland for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Denver to Northern Ireland with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Denver to Northern Ireland, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Denver to Northern Ireland become cheaper?

Of course! You can now track prices for flights from Denver to Northern Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Denver to Northern Ireland from £276

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 4 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Denver to Northern Ireland

Cheapest flights from Denver to Northern IrelandExplore the most affordable flight options available from Denver to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Explore the most affordable flight options available from Denver to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to Northern Ireland that are best for you.

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.

Cheapflights Insights

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

How much does it cost for a return flight from Denver to Northern Ireland?

Reviews of airlines servicing Northern Ireland

Read reviews from past customers who have flown with Delta, KLM, andAmerican Airlines from Denver to Northern Ireland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

What is the cheapest month to book a flight from Denver to Northern Ireland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Denver to Northern Ireland?

Why should you use Cheapflights to find cheap flight tickets from Denver to Northern Ireland?

Can Cheapflights find flights from Denver to Northern Ireland with no change fees?

Can Cheapflights notify me if prices for flights from Denver to Northern Ireland become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Denver to Northern Ireland
Explore the most affordable flight options available from Denver to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.