$363 Cheap Flights from Houston (IAH) to Dublin (DUB)

View $363 flight on Sun, Oct 12, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB)

Find available prices by choosing your travel dates.

Cheap Flights from Houston to Dublin (IAH-DUB)

Prices were available within the past 7 days and start at $363 for one-way flights and $600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Aug 10 - Tue, Aug 26
IAH
Houston
DUB
Dublin
$600 Roundtrip, found 6 days ago
$600
Roundtrip
found 6 days ago
Select United flight, departing Sun, Aug 10 from Houston to Dublin, returning Tue, Aug 26, priced at $600 found 6 days ago
Air Canada
Sun, Aug 10 - Tue, Aug 19
IAH
Houston
DUB
Dublin
$600 Roundtrip, just found
$600
Roundtrip
just found
Select Air Canada flight, departing Sun, Aug 10 from Houston to Dublin, returning Tue, Aug 19, priced at $600 just found
Air Canada
Tue, Oct 14 - Wed, Nov 5
IAH
Houston
DUB
Dublin
$602 Roundtrip, found 4 days ago
$602
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Oct 14 from Houston to Dublin, returning Wed, Nov 5, priced at $602 found 4 days ago
United
Tue, Jul 29 - Tue, Aug 19
IAH
Houston
DUB
Dublin
$604 Roundtrip, found 2 days ago
$604
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jul 29 from Houston to Dublin, returning Tue, Aug 19, priced at $604 found 2 days ago
Air Canada
Sat, Aug 9 - Tue, Aug 26
IAH
Houston
DUB
Dublin
$606 Roundtrip, found 6 days ago
$606
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sat, Aug 9 from Houston to Dublin, returning Tue, Aug 26, priced at $606 found 6 days ago
American Airlines
Tue, Oct 28 - Tue, Nov 18
IAH
Houston
DUB
Dublin
$615 Roundtrip, found 1 hour ago
$615
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Oct 28 from Houston to Dublin, returning Tue, Nov 18, priced at $615 found 1 hour ago
British Airways
Tue, Mar 3 - Tue, Mar 17
IAH
Houston
DUB
Dublin
$621 Roundtrip, found 2 days ago
$621
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Mar 3 from Houston to Dublin, returning Tue, Mar 17, priced at $621 found 2 days ago
Iberia
Tue, Oct 28 - Tue, Nov 18
IAH
Houston
DUB
Dublin
$622 Roundtrip, found 1 hour ago
$622
Roundtrip
found 1 hour ago
Select Iberia flight, departing Tue, Oct 28 from Houston to Dublin, returning Tue, Nov 18, priced at $622 found 1 hour ago
Delta
Wed, Nov 19 - Wed, Nov 26
IAH
Houston
DUB
Dublin
$622 Roundtrip, found 3 hours ago
$622
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Nov 19 from Houston to Dublin, returning Wed, Nov 26, priced at $622 found 3 hours ago
JetBlue Airways
Sat, May 10 - Tue, May 13
IAH
Houston
DUB
Dublin
$627 Roundtrip, just found
$627
Roundtrip
just found
Select JetBlue Airways flight, departing Sat, May 10 from Houston to Dublin, returning Tue, May 13, priced at $627 just found
Flights from Houston (IAH) to Dublin (DUB)
Origin airport
George Bush Intercontinental
Destination airport
Dublin
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Turkish Airlines, United, WestJet
Roundtrip price
$599
Distance
4548 mi

Houston to Dublin Flights

The cheapest times to fly from Houston to Dublin

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Dublin are during the month of August. You can find some of the cheapest flights from Houston to Dublin with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Houston to Dublin

Sunday is one of the best days to book for cheap flights from Houston to Dublin: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Houston to Dublin

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Dublin in 2025. You can also book with separate airlines for your outbound and return journeys, from $363 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Dublin flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Dublin airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB) cost?
Discover the latest flight deals from IAH to DUB by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAH to DUB?
The cheapest flights from IAH to DUB are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAH to DUB?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IAH to DUB. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB)?
Nonstop flights from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your travel dates and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from IAH to DUB?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB)?
Choose a flight from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB) last-minute?
Waiting until right before your break to book a flight from IAH to DUB often results in higher prices. While you may come across some last-minute deals, there’s no guarantee. Be flexible with your travel plans to maximize your chances of landing a bargain.
Is it cheaper to book an IAH to DUB flight and hotel package?
Opting for an IAH to DUB flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of accommodations and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Dublin Airport (DUB)?
Typically, it’s possible to reschedule or cancel your IAH to DUB flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.