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Cheap flights from Denver to Belfast from $369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Belfast departing on 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Denver to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 am - 6:25 pm
DEN
-
BFS
25h 45m
2 stops
Multiple Airlines Logo
9:40 pm - 7:00 pm
BFS
-
DEN
28h 20m
2 stops
$1,063Multiple Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
9:40 am - 6:25 pm
DEN
-
BFS
25h 45m
2 stops
Multiple Airlines Logo
9:15 pm - 11:20 am
BFS
-
DEN
45h 05m
3 stops
$1,112Multiple Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
4:40 pm - 10:40 pm
DEN
-
BFS
23h 00m
3 stops
Multiple Airlines Logo
8:15 am - 12:40 pm
BFS
-
DEN
35h 25m
2 stops
$1,160Multiple Airlines
Sat, Apr 4 - Mon, Jun 29
Multiple Airlines Logo
5:40 pm - 6:50 pm
DEN
-
BFS
18h 10m
2 stops
Multiple Airlines Logo
8:15 pm - 3:40 pm
BFS
-
DEN
26h 25m
2 stops
$1,218Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
4:40 pm - 8:50 pm
DEN
-
BFS
21h 10m
2 stops
Multiple Airlines Logo
8:15 am - 12:40 pm
BFS
-
DEN
35h 25m
2 stops
$1,221Multiple Airlines
Sat, Apr 4 - Mon, Jun 29
Multiple Airlines Logo
4:15 pm - 9:30 pm
DEN
-
BFS
22h 15m
3 stops
Multiple Airlines Logo
9:15 pm - 11:20 am
BFS
-
DEN
45h 05m
3 stops
$1,224Multiple Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
4:05 pm - 10:20 pm
DEN
-
BFS
23h 15m
2 stops
Multiple Airlines Logo
10:00 pm - 2:20 pm
BFS
-
DEN
23h 20m
2 stops
$1,304Multiple Airlines
Wed, May 13 - Sun, May 24
Multiple Airlines Logo
11:25 am - 3:15 pm
DEN
-
BFS
20h 50m
3 stops
Multiple Airlines Logo
10:00 pm - 2:20 pm
BFS
-
DEN
23h 20m
2 stops
$1,321Multiple Airlines
Wed, May 13 - Sun, May 24
Multiple Airlines Logo
11:25 am - 10:20 pm
DEN
-
BFS
27h 55m
3 stops
Multiple Airlines Logo
8:25 am - 7:00 pm
BFS
-
DEN
41h 35m
3 stops
$1,559Multiple Airlines
Wed, May 13 - Sun, May 24

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Belfast Intl Airport 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 832,500 searches. Data last updated March 25, 2026.
Use the filters below to find and compare flights from Denver to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 8/16

9:40 am-6:25 pm

2 stops25h 45m

Belfast Intl

Sat 8/29

9:40 pm-7:00 pm

2 stops28h 20m

$1,063

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 8/16

9:40 am-6:25 pm

2 stops25h 45m

Belfast Intl

Sat 8/29

9:15 pm-11:20 am

3 stops45h 05m

$1,112

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 4/4

4:40 pm-10:40 pm

3 stops23h 00m

Belfast Intl

Mon 6/29

8:15 am-12:40 pm

2 stops35h 25m

$1,160

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 4/19

5:40 pm-6:50 pm

2 stops18h 10m

Belfast Intl

Tue 4/28

8:15 pm-3:40 pm

2 stops26h 25m

$1,218

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sat 4/4

4:40 pm-8:50 pm

2 stops21h 10m

Belfast Intl

Mon 6/29

8:15 am-12:40 pm

2 stops35h 25m

$1,221

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Sun 8/16

4:15 pm-9:30 pm

3 stops22h 15m

Belfast Intl

Sat 8/29

9:15 pm-11:20 am

3 stops45h 05m

$1,224

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 5/13

4:05 pm-10:20 pm

2 stops23h 15m

Belfast Intl

Sun 5/24

10:00 pm-2:20 pm

2 stops23h 20m

$1,304
Quickest round-trip

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 5/13

11:25 am-3:15 pm

3 stops20h 50m

Belfast Intl

Sun 5/24

10:00 pm-2:20 pm

2 stops23h 20m

$1,321

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Wed 5/13

11:25 am-10:20 pm

3 stops27h 55m

Belfast Intl

Sun 5/24

8:25 am-7:00 pm

3 stops41h 35m

$1,559
Cheapest one-way
Quickest one-way

DenverBelfast

DEN - BFS

DENBFS

Denver Intl

Tue 9/1

8:10 pm-7:50 pm

2 stops16h 40m

$369

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

When to book flights from Denver to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Belfast Intl Airport (DEN to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Belfast Intl Airport

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from Denver to Belfast Intl Airport takes 13h 50m
There are no direct flights from Denver to Belfast Intl Airport. There are no popular flight routes from Denver to Belfast Intl Airport.
Search flight deals

  • How far is Denver Intl to Belfast Intl by plane?

    The straight-line distance from Denver Intl to Belfast Intl is 4351.3 mi. 13h 50m is a normal flight duration for this route.

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

    Prices for flights from Denver Intl Airport to Belfast Intl Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Belfast Intl Airport.

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

    The necessary travel and health documents for your Belfast Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Denver to Belfast Intl Airport?

Best airlines flying from Denver to Belfast Intl Airport

Compare and see reviews for airlines that fly from Denver to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $679Free CancellationRating
6.7
7,819 reviews
Search British Airways flights

  • How do I get Price Alerts for flights from Denver to Belfast Intl Airport?

    Price Alerts will notify you by email when the price for flights to Belfast Intl Airport from Denver decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Denver to Belfast Intl Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Ballymena
Newry
Dungannon

Why use momondo?

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

Finding the right flight to Belfast from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

All flight searches from Denver to Belfast on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Denver to Belfast?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Denver.

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

Of course. momondo tracks the price of Denver to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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