HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast

$579+ Cheap flights from Denver (DEN) to Belfast

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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BHD
Aug 6 — Aug 131
Thu 8/6
Thu 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Belfast with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to Belfast

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 July 7, 2026.

This Mytrip deal was found by Cheapflights users on 7/4. 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 9/64:40 pm
DEN
-
BFS
2 stops22h 10m
Multiple Airlines
Wed 9/168:30 am
BFS
-
DEN
3 stops41h 30m
Multiple Airlines
Deal found 7/4$936
This British Airways deal was found by Cheapflights users on 7/4. 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.
Wed 12/165:01 pm
DEN
-
BHD
1 stop14h 34m
British Airways
Wed 1/63:40 pm
BHD
-
DEN
1 stop30h 30m
British Airways
Deal found 7/4$981
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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.
Tue 9/16:40 pm
DEN
-
BHD
1 stop15h 55m
British Airways
Tue 9/156:30 am
BHD
-
DEN
1 stop17h 00m
British Airways
Deal found 7/2$983
This Cheapflightsfares deal was found by Cheapflights users on 7/6. 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.
Tue 9/16:40 pm
DEN
-
BHD
1 stop15h 55m
British Airways
Fri 9/116:30 am
BHD
-
DEN
1 stop17h 00m
British Airways
Deal found 7/6$984
This Cheapflightsfares deal was found by Cheapflights users on 7/3. 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.
Mon 8/316:40 pm
DEN
-
BHD
1 stop13h 50m
British Airways
Fri 9/116:30 am
BHD
-
DEN
1 stop17h 00m
British Airways
Deal found 7/3$987
This Mytrip deal was found by Cheapflights users on 7/2. 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 9/74:40 pm
DEN
-
BFS
2 stops23h 30m
Multiple Airlines
Thu 9/248:40 pm
BFS
-
DEN
3 stops30h 37m
Multiple Airlines
Deal found 7/2$989
This British Airways deal was found by Cheapflights users on 7/2. 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.
Wed 11/115:01 pm
DEN
-
BHD
1 stop14h 34m
British Airways
Sat 11/146:35 am
BHD
-
DEN
1 stop15h 35m
British Airways
Deal found 7/2$996
This oojo deal was found by Cheapflights users on 7/2. 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.
Mon 9/76:40 pm
DEN
-
BHD
1 stop13h 50m
British Airways
Thu 9/249:35 am
BHD
-
DEN
1 stop13h 55m
British Airways
Deal found 7/2$1,003
This Mytrip deal was found by Cheapflights users on 7/2. 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 8/99:40 am
DEN
-
BFS
3 stops30h 10m
Multiple Airlines
Tue 8/185:55 am
BFS
-
DEN
3 stops36h 25m
Multiple Airlines
Deal found 7/2$1,033
This Mytrip deal was found by Cheapflights users on 7/6. 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.
Wed 8/58:10 pm
DEN
-
BFS
2 stops16h 30m
Multiple Airlines
Wed 8/125:55 am
BFS
-
DEN
3 stops35h 38m
Multiple Airlines
Deal found 7/6$1,143

Find flight deals from Denver to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 7, 2026.

Round-trip from

$936
(Mytrip)

One-way from

$579
(Cheapflightsfares)
From Denver Intl to Belfast
Search Deals
One-way flight from Denver Intl to Belfast
Search Deals

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated July 7, 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 round-trip

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 9/1

6:40 pm-5:35 pm

1 stop15h 55m

Belfast City

Tue 9/15

6:30 am-4:30 pm

1 stop17h 00m

$983

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Tue 9/1

6:40 pm-5:35 pm

1 stop15h 55m

Belfast City

Fri 9/11

6:30 am-4:30 pm

1 stop17h 00m

$984
Quickest round-trip

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 8/31

6:40 pm-3:30 pm

1 stop13h 50m

Belfast City

Fri 9/11

6:30 am-4:30 pm

1 stop17h 00m

$987

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Mon 9/7

4:40 pm-11:10 pm

2 stops23h 30m

Belfast Intl

Thu 9/24

8:40 pm-8:17 pm

3 stops30h 37m

$989

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Fri 12/4

5:01 pm-2:15 pm

1 stop14h 14m

Belfast City

Tue 12/8

11:25 am-3:10 pm

1 stop34h 45m

$996

DenverBelfast

DEN - BHD

DENBHD

Denver Intl

Mon 9/7

2:21 pm-7:25 pm

2 stops22h 04m

Belfast City

Thu 9/24

6:30 am-4:30 pm

1 stop17h 00m

$1,009

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 8/9

9:40 am-10:50 pm

3 stops30h 10m

Belfast Intl

Tue 8/18

5:55 am-11:20 am

3 stops36h 25m

$1,033

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 8/5

8:10 pm-7:40 pm

2 stops16h 30m

Belfast Intl

Wed 8/12

5:55 am-10:33 am

3 stops35h 38m

$1,143

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Fri 7/17

8:10 pm-9:50 pm

2 stops18h 40m

Belfast Intl

Sun 7/26

9:25 pm-11:20 am

3 stops44h 55m

$1,306

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 12/19

3:40 pm-9:35 pm

2 stops22h 55m

Belfast Intl

Sat 1/2

8:10 pm-6:00 pm

2 stops28h 50m

$1,495

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated July 7, 2026.
Read through reviews of airlines operating flights from Denver to Belfast, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,101 reviews

Food

6.4

Crew

7.7

Comfort

6.8

Overall

6.7

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,101 reviews
British Airways
6.7
Okay
8,101 reviews

Food

6.4

Crew

7.7

Comfort

6.8

Overall

6.7

Entertainment

6.4

Boarding

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

Related info for your journey

Find useful and relevant information for your journey from Denver to Belfast. 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 Belfast?

    If you book a flight to Belfast from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 0 flights from Denver Intl to Belfast per day from 1 airline.

  • How long is the flight from Denver to Belfast?

    There are many flights that can get you from Denver to Belfast in 15h 55m. Fly via British Airways to get the fastest option. The distance between Denver and Belfast is about 4347 mi.

  • What is the cheapest airline to fly from Denver to Belfast round-trip?

    Cheapflights users have booked flights from Denver to Belfast round-trip from $645.

  • 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 vacation 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.

See more FAQs

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.
Denver to Belfast Intl flights

Top airline flying from Denver to Belfast

Discover the top airline that operate flights from Denver to Belfast. 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 July 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$645Average$1,318FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.