What is the cheapest airline that flies from Denver Intl to Ireland?

United Airlines, Lufthansa, and JetBlue are the most popular carriers operating from Denver Intl to Ireland

What airlines fly to Ireland?

Aer Lingus, United Airlines and Icelandair are the top three most popular airlines that fly to Ireland from Denver according to our data. Aer Lingus is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 13 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Denver Intl Airport to Ireland were last updated today.

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

As of March 2026, there are 13 operators available to choose from for flights from Denver Intl Airport to Ireland.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Ireland.

What documentation or ID do you need to fly to Ireland?

The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$297 Cheap Flights from Denver to Ireland in 2026

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Find the cheapest flights from Denver to Ireland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:00 pm - 10:15 am

DEN

SNN

13h 15m

1 stop

12:30 pm - 7:07 pm

SNN

DEN

13h 37m

1 stop

$658United Airlines

Wed, Apr 29 - Fri, May 8

2:00 pm - 10:15 am

DEN

SNN

13h 15m

1 stop

12:30 pm - 8:20 am

SNN

DEN

26h 50m

3 stops

$662United Airlines

Wed, Apr 29 - Fri, May 8

11:59 pm - 7:30 am

DEN

SNN

24h 31m

2 stops

9:30 am - 7:44 pm

SNN

DEN

17h 14m

2 stops

$663United Airlines

Tue, Sep 1 - Thu, Sep 10

4:40 pm - 1:15 pm

DEN

DUB

13h 35m

1 stop

12:15 pm - 7:00 pm

DUB

DEN

13h 45m

1 stop

$745Icelandair

Mon, May 4 - Fri, May 8

4:40 pm - 1:15 pm

DEN

DUB

13h 35m

1 stop

2:15 pm - 7:00 pm

DUB

DEN

11h 45m

1 stop

$747Icelandair

Mon, May 4 - Thu, May 21

6:40 am - 10:20 am

DEN

ORK

20h 40m

2 stops

6:15 am - 7:42 pm

ORK

DEN

20h 27m

2 stops

$858Delta

Fri, Apr 17 - Mon, Apr 20

5:40 pm - 4:30 pm

DEN

ORK

15h 50m

1 stop

5:05 pm - 11:50 pm

ORK

DEN

37h 45m

2 stops

$889Lufthansa

Sun, Apr 12 - Thu, Apr 30

5:40 pm - 2:40 pm

DEN

ORK

14h 00m

1 stop

6:15 am - 5:31 pm

ORK

DEN

18h 16m

2 stops

$900Delta

Wed, Aug 26 - Wed, Sep 2

6:27 pm - 4:35 pm

DEN

ORK

15h 08m

2 stops

6:15 am - 7:42 pm

ORK

DEN

20h 27m

2 stops

$909KLM

Fri, Apr 17 - Mon, Apr 20

4:05 pm - 4:30 pm

DEN

ORK

17h 25m

2 stops

5:05 pm - 11:50 pm

ORK

DEN

37h 45m

2 stops

$910Lufthansa

Sun, Apr 12 - Thu, Apr 30

United Airlines flights from Denver to Ireland

Our best United Airlines deals on Denver to Ireland flight tickets

United Airlines

Apr 29

DEN2:00 pmDenver Intl

13h 15m

1 stop

SNN10:15 amShannon

May 8

SNN12:30 pmShannon

13h 37m

1 stop

DEN7:07 pmDenver Intl

$658

United Airlines

Apr 29

DEN2:00 pmDenver Intl

13h 15m

1 stop

SNN10:15 amShannon

May 8

SNN12:30 pmShannon

26h 50m

3 stops

DEN8:20 amDenver Intl

$662

United Airlines

Sep 1

DEN11:59 pmDenver Intl

24h 31m

2 stops

SNN7:30 amShannon

Sep 10

SNN9:30 amShannon

17h 14m

2 stops

DEN7:44 pmDenver Intl

$663

Icelandair flights from Denver to Ireland

Our best Icelandair deals on Denver to Ireland flight tickets

Icelandair

Sep 4

DEN8:10 pmDenver Intl

31h 55m

1 stop

DUB11:05 amDublin

Sep 12

DUB2:15 pmDublin

11h 45m

1 stop

DEN7:00 pmDenver Intl

$715

Icelandair

Sep 16

DEN4:40 pmDenver Intl

13h 35m

1 stop

DUB1:15 pmDublin

Sep 23

DUB12:15 pmDublin

13h 45m

1 stop

DEN7:00 pmDenver Intl

$716

Icelandair

Sep 8

DEN4:40 pmDenver Intl

11h 25m

1 stop

DUB11:05 amDublin

Sep 15

DUB2:15 pmDublin

11h 45m

1 stop

DEN7:00 pmDenver Intl

$718

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Wed 4/29

2:00 pm-10:15 am

1 stop13h 15m

Shannon

Fri 5/8

12:30 pm-7:07 pm

1 stop13h 37m

$658

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Wed 4/29

2:00 pm-10:15 am

1 stop13h 15m

Shannon

Fri 5/8

12:30 pm-8:20 am

3 stops26h 50m

$662

DenverShannon

DEN - SNN

DENSNN

Denver Intl

Tue 9/1

11:59 pm-7:30 am

2 stops24h 31m

Shannon

Thu 9/10

9:30 am-7:44 pm

2 stops17h 14m

$663

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/4

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Fri 5/8

12:15 pm-7:00 pm

1 stop13h 45m

$745

Quickest round-trip

DenverDublin

DEN - DUB

DENDUB

Denver Intl

Mon 5/4

4:40 pm-1:15 pm

1 stop13h 35m

Dublin

Thu 5/21

2:15 pm-7:00 pm

1 stop11h 45m

$747

DenverCork

DEN - ORK

DENORK

Denver Intl

Fri 4/17

6:40 am-10:20 am

2 stops20h 40m

Cork

Mon 4/20

6:15 am-7:42 pm

2 stops20h 27m

$858

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 4/12

5:40 pm-4:30 pm

1 stop15h 50m

Cork

Thu 4/30

5:05 pm-11:50 pm

2 stops37h 45m

$889

DenverCork

DEN - ORK

DENORK

Denver Intl

Wed 8/26

5:40 pm-2:40 pm

1 stop14h 00m

Cork

Wed 9/2

6:15 am-5:31 pm

2 stops18h 16m

$900

DenverCork

DEN - ORK

DENORK

Denver Intl

Fri 4/17

6:27 pm-4:35 pm

2 stops15h 08m

Cork

Mon 4/20

6:15 am-7:42 pm

2 stops20h 27m

$909

DenverCork

DEN - ORK

DENORK

Denver Intl

Sun 4/12

4:05 pm-4:30 pm

2 stops17h 25m

Cork

Thu 4/30

5:05 pm-11:50 pm

2 stops37h 45m

$910

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Denver to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Ireland?

In general, January is the cheapest month to fly from Denver to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $434. If you aren’t able to travel to Ireland during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $466.

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Thursday when prices can be found for as low as $774. This is often the case because there is less demand to fly during this day of the week. Flights from Denver to Ireland on a Saturday will generally be more expensive and average around $856. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ireland?

According to our data, the cheapest time of day to fly to Ireland is in the afternoon. momondo users have found flights departing from Denver to Ireland in the afternoon for as low as $548. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the evening when prices are around $807.

What is the cheapest Denver Intl to Ireland flight route?

Fly from Denver Intl to Dublin for the best Denver Intl - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $618 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Denver for as low as $551 on momondo.

What cabin class options are available on Denver Intl to Ireland flights?

There are 3 cabin classes available to choose from on Denver Intl to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Denver to Ireland flights?

You could potentially save up to 1% on your flight if you consider stops on a Denver to Ireland flight.

Cheap Denver to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Ireland

Best Price Found	$379
Fastest flight time	8h 45m
Direct flights	Mon, Tue, Thu, Sat and Sun
Airports in Ireland	77 airports

The best one-way flight to Ireland from Denver in the past 72 hours is $379. The best round-trip flight deal from Denver to Ireland found on momondo in the last 72 hours is $793.

The fastest flight from Denver to Ireland takes 8h 45m

Direct flights go from Denver to Ireland on Monday, Tuesday, Thursday, Saturday and Sunday. The only airline offering direct flights is Aer Lingus.

There are 77 airports in Ireland. From Denver there are direct flights to Dublin (DUB).

Search flight deals

When did momondo last update prices for flights from Denver Intl Airport to Ireland?
Prices for flights from Denver Intl Airport to Ireland were last updated today.
How many operators does momondo search for flights from Denver Intl Airport to Ireland?
As of March 2026, there are 13 operators available to choose from for flights from Denver Intl Airport to Ireland.
How old do you have to be to fly from Denver Intl Airport to Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Denver to Ireland?
momondo data reveals that the most frequently booked plane model on the route from Denver to Ireland is Airbus A330-200, representing 73.56% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 9.63%, Boeing 787 Dreamliner at 6.65%, and Boeing 777-200/200ER at 3.94%.

Best airlines flying from Denver to Ireland

Compare and see reviews for airlines that fly from Denver to Ireland with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $131	Free Cancellation	Rating 7.2 2,909 reviews	Search JetBlue flights
Icelandair	PriceFrom $350	Free Cancellation	Rating 7.0 627 reviews	Search Icelandair flights
SWISS	PriceFrom $356	Free Cancellation	Rating 7.5 1,906 reviews	Search SWISS flights
KLM	PriceFrom $362	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
United Airlines	PriceFrom $375	Free Cancellation	Rating 7.4 9,499 reviews	Search United Airlines flights
Air Canada	PriceFrom $377	Free Cancellation	Rating 7.1 10,853 reviews	Search Air Canada flights
Iberia	PriceFrom $387	Free Cancellation	Rating 7.0 3,157 reviews	Search Iberia flights
British Airways	PriceFrom $402	Free Cancellation	Rating 6.7 7,825 reviews	Search British Airways flights
Delta	PriceFrom $403	Free Cancellation	Rating 7.9 8,355 reviews	Search Delta flights
Air France	PriceFrom $405	Free Cancellation	Rating 7.4 1,555 reviews	Search Air France flights

Why use momondo?

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

It is quick and easy to find Denver to Ireland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ireland that suits you.

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

Yes. momondo allows you to filter the results for Denver to Ireland flights to just show those with flexible booking policies.

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

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 Ireland from Denver.

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

Yes momondo offers price alerts on flights to Ireland from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ireland 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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Find better results for your trip to Ireland

Popular cities

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Complete your trip

Feeling lucky

Popular cities in Ireland

Flights to Dublinfrom $453

Flights to Shannon, Clarefrom $523

Flights to Corkfrom $576

Flights to Milltown (Kerry)from $670

Flights to Knockfrom $747

Flights to Donegalfrom $875

Cheap flights from Denver to Ireland from $297

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 Ireland departing on 4/28. 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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Find the cheapest flights from Denver to Ireland

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United Airlines flights from Denver to Ireland

Our best United Airlines deals on Denver to Ireland flight tickets

Icelandair flights from Denver to Ireland

Our best Icelandair deals on Denver to Ireland flight tickets

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

See travel insights to Ireland from

How to get the cheapest flight ticket from Denver to Ireland

What is the cheapest month to fly to Ireland?

What is the cheapest day to depart on your flight to Ireland?

What is the cheapest time of day to depart on your flight to Ireland?

What is the cheapest Denver Intl to Ireland flight route?

How far in advance should I book a flight to Ireland?

What cabin class options are available on Denver Intl to Ireland flights?

Can stopping save me money on Denver to Ireland flights?

What is the cheapest airline that flies from Denver Intl to Ireland?

What airlines fly to Ireland?

Cheap Denver to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Ireland

Best Price Found

Fastest flight time

Direct flights

Airports in Ireland

Best airlines flying from Denver to Ireland

Compare and see reviews for airlines that fly from Denver to Ireland with momondo

Why use momondo?

An easier way to manage your Ireland 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo

Denver flight routes

According to popular flight searches on momondo this year

Ireland flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Ireland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ireland

List of cabin classes available on flights landing in Ireland. Availability may vary depending on flight origin and airline.

Complete your trip to Ireland

Explore popular destinations other users love

According to popular flight searches on momondo this year