Cheap flights from San Francisco to Ireland from $257
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Ireland departing on 8/2. 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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How to get the cheapest flight ticket from San Francisco 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
What is the cheapest month to fly to Ireland?
In general, February is the cheapest month to fly from San Francisco to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $586. If you aren’t able to travel to Ireland during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $622.
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 Wednesday when prices can be found for as low as $758. This is often the case because there is less demand to fly during this day of the week. Flights from San Francisco to Ireland on a Thursday 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 San Francisco to Ireland in the afternoon for as low as $797. 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 morning when prices are around $931.
What is the cheapest San Francisco to Ireland flight route?
Fly from San Francisco to Dublin for the best San Francisco - 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 San Francisco when booking 8 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $761 when searching 8 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from San Francisco for as low as $703 on momondo.
What cabin class options are available on San Francisco to Ireland flights?
There are 3 cabin classes available to choose from on San Francisco to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Francisco to Ireland?
WestJet, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from San Francisco to Ireland
What airlines fly to Ireland?
Aer Lingus, American Airlines and United Airlines are the top three most popular airlines that fly to Ireland from San Francisco according to our data. Aer Lingus is the first choice among our users, with 76% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 14 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Francisco to Ireland on average per day?
As of June 2025, there are 3 flights per day flying from San Francisco to Ireland. The most common time of day flights depart is 5:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from San Francisco to Ireland on average per week?
As of June 2025, 21 flights take off from San Francisco and land in Ireland each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
Cheap San Francisco to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Ireland
When did momondo last update prices for flights from San Francisco Airport to Ireland?
Prices for flights from San Francisco Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Ireland?
As of June 2025, there are 14 operators available to choose from for flights from San Francisco Airport to Ireland.
How old do you have to be to fly from San Francisco Airport to Ireland?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to Ireland?
Based on momondo bookings for flights between San Francisco and Ireland, the leading plane model is Boeing 777, making up 22.09% of the total bookings. Other popular models include Airbus A330 with 21.55%, Airbus A330-300 with 16.92%, and Boeing 777-300ER with 10.05%.
Best airlines flying from San Francisco to Ireland
Compare and see reviews for airlines that fly from San Francisco to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $428 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $479 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom $485 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $496 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $511 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $517 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom $520 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $542 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom $581 | Free Cancellation | Rating 7.5 1,623 reviews | |||
| PriceFrom $582 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to Ireland?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Ireland. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from San Francisco to Ireland with flexible booking policies on momondo?
All flight searches from San Francisco to Ireland on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from San Francisco to Ireland?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to Ireland.
I’m not ready to book a flight from San Francisco to Ireland right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ireland from San Francisco. 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.