George Bush Intercontinental to Dublin
4548 miles great-circle distance, typically flown in 9h 33m with 8 airlines operating direct service from George Bush Intercontinental (IAH) 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 George Bush Intercontinental
Houston George Bush Intercontinental is United Airlines' second-largest hub after Newark, with five terminals and a Skytrain people mover connecting them. METRO's bus 102 runs from the airport to downtown Houston in around 50 minutes; light rail does not extend to IAH. International long-haul through Houston is heaviest to Latin America (over 30 destinations) and Europe, with Lufthansa, KLM, Air France and British Airways all operating daily and growing Middle East service via Qatar, Emirates and Turkish.
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 IAH to DUB?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 9h 33m | Economy |
| British Airways | BA | 9h 33m | Economy |
| Lufthansa | LH | 9h 33m | Economy |
| Air France | AF | 9h 33m | Economy |
| KLM | KL | 9h 33m | Economy |
| Qatar Airways | QR | 9h 33m | Economy |
| Emirates | EK | 9h 33m | Economy |
| Turkish Airlines | TK | 9h 33m | Economy |
8 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly IAH→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.
Houston to Dublin FAQs
Direct flights from George Bush Intercontinental (IAH) to Dublin (DUB) take approximately 9h 33m for the 4548-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.
8 carriers operate direct service from George Bush Intercontinental (IAH) to Dublin (DUB): United Airlines, British Airways, Lufthansa, Air France, KLM and 3 more. 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.