How long is the flight from Denver to Belfast?

For as low as £703, British Airways can have you in Belfast from Denver in 13h 49m. Airlines will cover a distance of 4347 mi.

In terms of precipitation, rainfall in Belfast 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 Belfast when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast, 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 time of day to fly from DEN to BFS?

When flying from Denver to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Denver to Belfast?

Most people fly from Denver Intl (DEN) if they book a flight from Denver to Belfast. On average, Denver Intl has 0 outbound flights to Belfast per day from 0 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

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

Yes. In addition to deals on Denver to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Denver to Belfast?

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

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

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

£601+ Cheap Flights from Denver to Belfast

Cheap flight deals from Denver to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

Cheapest flights from Denver to Belfast
Explore the most affordable flight options available from Denver to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Mon 26/1016:40 -

2 stops21h 55m

Mon 2/1106:20 -

2 stops18h 40m

Deal found 11/9£601

Thu 29/1016:40 -

2 stops20h 30m

Thu 5/1107:20 -

2 stops17h 40m

Deal found 14/9£622

Sun 8/1117:01 -

1 stop13h 49m

Fri 20/1106:45 -

1 stop15h 25m

Deal found 14/9£703

Sun 11/1006:35 -

2 stops19h 45m

Tue 20/1017:30 -

2 stops28h 37m

Deal found 12/9£713

Sun 11/1018:35 -

1 stop13h 00m

Tue 20/1006:30 -

2 stops17h 49m

Deal found 12/9£720

Sun 11/1018:35 -

1 stop16h 05m

Tue 20/1013:45 -

1 stop33h 40m

Deal found 12/9£723

Sun 8/1115:40 -

2 stops23h 00m

Fri 20/1106:30 -

2 stops18h 30m

Deal found 14/9£746

Sun 11/1009:10 -

3 stops28h 45m

Tue 20/1007:00 -

3 stops44h 17m

Deal found 12/9£771

Sun 8/1109:00 -

3 stops20h 00m

Fri 20/1107:20 -

2 stops17h 40m

Deal found 14/9£836

Wed 28/1018:01 -

1 stop14h 34m

Sun 8/1116:20 -

2 stops53h 50m

Deal found 11/9£1,451

Find flight deals from Denver to Belfast

Round-trip from	£601

26/10-2/11
4 total stops
40h 35m total
Denver to Belfast

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Mon 26/10

16:40-20:35

2 stops21h 55m

Belfast Intl

Mon 2/11

06:20-18:00

2 stops18h 40m

£601

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Thu 29/10

16:40-19:10

2 stops20h 30m

Belfast Intl

Thu 5/11

07:20-18:00

2 stops17h 40m

£622

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 8/11

17:01-13:50

1 stop13h 49m

Belfast City

Fri 20/11

06:45-15:10

1 stop15h 25m

£703

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 1/3

17:01-14:15

1 stop14h 14m

Belfast City

Fri 5/3

06:45-15:10

1 stop15h 25m

£712

Fastest return journey

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Mon 1/3

17:01-14:15

1 stop14h 14m

Belfast City

Thu 4/3

08:50-15:10

1 stop13h 20m

£712

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 11/10

06:35-09:20

2 stops19h 45m

Belfast City

Tue 20/10

17:30-15:07

2 stops28h 37m

£713

DenverBelfast

DEN Denver Intl - BHD Belfast City

DENBHD

Denver Intl

Sun 11/10

18:35-14:35

1 stop13h 00m

Belfast City

Tue 20/10

06:30-17:19

2 stops17h 49m

£720

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Sun 11/10

09:10-20:55

3 stops28h 45m

Belfast Intl

Tue 20/10

07:00-20:17

3 stops44h 17m

£771

DenverBelfast

DEN Denver Intl - BFS Belfast Intl

DENBFS

Denver Intl

Sun 8/11

15:40-14:50

3 stops16h 10m

Belfast Intl

Fri 20/11

06:30-18:00

2 stops18h 30m

£800

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Sorted by cheapest first

Best time to book a flight from Denver to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Denver with our price prediction graph.

DEN-BF1

DEN-BFS

DEN-BHD

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 Belfast

DEN-BF1

DEN-BFS

DEN-BHD

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Denver to Belfast?
Most people fly from Denver Intl (DEN) if they book a flight from Denver to Belfast. On average, Denver Intl has 0 outbound flights to Belfast per day from 0 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.
How long is the flight from Denver to Belfast?
For as low as £703, British Airways can have you in Belfast from Denver in 13h 49m. Airlines will cover a distance of 4347 mi.
Can I find deals for flights from Denver to Belfast that include hotel bookings?
Yes. In addition to deals on Denver to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Denver to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Belfast.
Can I find deals for business class flights from Denver to Belfast?
Yes. Cheapflights offers flight deals from Denver to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Denver to Belfast?

When you search for this flight from Denver to Belfast, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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

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

Certainly. Search results for flights to Belfast from Denver shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from Denver to Belfast 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 Belfast from £601

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Denver to Belfast

Cheapest flights from Denver to BelfastExplore the most affordable flight options available from Denver to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Explore the most affordable flight options available from Denver to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Best flights from Denver to BelfastDiscover carefully curated flight deals from Denver to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Discover carefully curated flight deals from Denver to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights from Denver to BelfastDiscover last-minute flight deals from Denver to Belfast. Data last updated 16 September 2026 and is based on user searches.

Discover last-minute flight deals from Denver to Belfast. Data last updated 16 September 2026 and is based on user searches.

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Best time to book a flight from Denver to Belfast

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Related info for your journey

What airport do you fly from for flights from Denver to Belfast?

How long is the flight from Denver to Belfast?

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

How can I find direct flights from Denver to Belfast?

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

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 Belfast

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

Complete your trip

Complete your trip to Belfast by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from Denver to Belfast by cabin class

Find flights from Denver to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Denver and Belfast flights

Browse other Denver and Belfast flight options. Last updated on 16 September 2026.

Other flights from Denver

Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on 16 September 2026.

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Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from Denver to Belfast?

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

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

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

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Book with Flexibility

Travel Smart

Cheapest flights from Denver to Belfast
Explore the most affordable flight options available from Denver to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Best flights from Denver to Belfast
Discover carefully curated flight deals from Denver to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights from Denver to Belfast
Discover last-minute flight deals from Denver to Belfast. Data last updated 16 September 2026 and is based on user searches.