Denver International to Dublin
4381 miles great-circle distance, typically flown in 9h 13m with 4 airlines operating direct service from Denver International (DEN) to Dublin (DUB). Cheapest fares are usually in January (around $449 return), with peak prices in August (around $1347). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Denver International
Denver International sits 25 miles northeast of downtown Denver — a deliberately remote site that allows for six runways and almost unlimited expansion. The A Line commuter train runs every 15 minutes from the airport directly to Union Station downtown in 37 minutes for $10.50. United dominates the schedule with its largest non-Newark hub; Southwest and Frontier add heavy domestic capacity. Snow disruption is common between November and March, but the airport's ground-stop policy is faster than ORD's.
Arriving in Dublin
Dublin Airport is 10 km north of central Dublin. Aircoach and Dublin Bus 16 run direct to the centre. Aer Lingus is the dominant transatlantic carrier with US Customs and Border Protection pre-clearance — passengers clear US immigration before boarding the return flight. Cheapest US fares are November (post-summer) and January–February; peak demand is mid-June through mid-September.
Who flies DEN to DUB?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 9h 13m | Economy |
| British Airways | BA | 9h 13m | Economy |
| Lufthansa | LH | 9h 13m | Economy |
| Icelandair | FI | 9h 13m | Economy |
4 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly DEN→DUB
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Denver to Dublin FAQs
Direct flights from Denver International (DEN) to Dublin (DUB) take approximately 9h 13m for the 4381-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $449. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
4 carriers operate direct service from Denver International (DEN) to Dublin (DUB): United Airlines, British Airways, Lufthansa and Icelandair. Frequencies vary by season and carrier — United Airlines typically operates the highest weekly count on this corridor.
Visa-free for US passport holders up to 90 days. US Customs and Border Protection pre-clearance available at Dublin and Shannon airports. Always check travel.state.gov for the latest entry requirements before booking.
Dublin (DUB) is the primary international airport for Dublin. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.