The cheapest times to fly from IAH to DUB are

  • October 8th to April 1st (except the week of December 17th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from IAH to DUB is early to mid January. Prices can be as high as $1344 for Thursday flights during early August, or as low as $773 for Tuesday flights around early to mid January.


When to Fly to Dublin

Flying from Houston, TX (IAH) to Dublin (DUB) will usually cost between $834 to $1208 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid January with an average ticket price of $836. Due to high demand the most expensive time to fly is early August, with an average price of $1277. Planning your trip to low-cost times can easily save you $442 on economy flights and even more on first-class flights. Generally, any price below $944 can be considered a good price for a round-trip IAH to DUB flight.

See below for a graph of average weekly prices for the IAH to DUB route. All prices are for round-trip tickets in USD.

IAH to DUB Flight Prices

Compared to other flights, the IAH to DUB flight is priced close to the average and costs about as much as the average flight leaving from Houston. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Thursdays are the most expensive days to fly to Dublin, and Fridays are the most expensive days to return to Houston. Selecting flights on the least expensive days could save you up to $61 (6%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $923. Return trip prices are from the DUB to IAH flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from IAH to DUB can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 10 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from IAH to DUB while comparing.

Destination alternative #1: Belfast City Airport (BHD) in Belfast

  • 84 miles (135 km) away from DUB
  • Usually 18.23% less expensive than DUB
  • 1-layover flights available

See IAH to BHD flights


Flight Hacking IAH to DUB

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from IAH to DUB — but Champion Traveler does!

Hack #1: Vienna (IAH > VIE > DUB)

  • Price for both tickets: $719
  • Average savings: $225 (23.79%)

See IAH to VIE flights

Hack #2: Boston, MA (IAH > BOS > DUB)

  • Price for both tickets: $739
  • Average savings: $205 (21.73%)

See IAH to BOS flights

Hack #3: Chicago, IL (IAH > ORD > DUB)

  • Price for both tickets: $753
  • Average savings: $191 (20.19%)

See IAH to ORD flights


Flight Questions Answered

Still have questions about flying from IAH to DUB? We’ve got answers.

Which airlines fly this route?

You can find 22 major airlines flying this route most often: Aer Lingus, Air Canada, Air France, Alaska, American, Austrian, British Airways, Brussels Airlines, Condor, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, SAS, Singapore Airlines, SWISS, Tap Air Portugal, Turkish Airlines, United, WestJet, and potentially more during busy seasons.

How far away is it from Dublin Airport to George Bush Intercontinental/Houston Airport?

The distance between the two airports is roughly 4546 miles or 7316 kilometers.

How long does it take to fly from IAH to DUB?

The real-world flight time for a nonstop IAH to DUB flight is about 9 hour 10 minutes.

How many flights go between Houston, TX and Dublin?

It depends on the day of the week and the date, but a typical day might have around 88 available flights from IAH to DUB.


Airport Location Info


Departing Airport

Origination code IAH
Origination airport name George Bush Intercontinental/Houston Airport
City Houston, TX
Country the United States
Latitude 30
Longitude -95.3

Return Airport

Destination code DUB
Destination airport name Dublin Airport
City Dublin
Country Ireland
Latitude 53.4
Longitude -6.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.