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Find cheap flights from San Francisco to Shannon from $610

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Shannon departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Shannon, as well as popular online travel agencies
In the last 7 days travelers have searched 43,895,468 times on KAYAK, and here is why:

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Cheap flight deals from San Francisco to Shannon (SFO-SNN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:00 am - 11:20 amSFO-SNN
19h 20m2 stops
7:40 am - 8:27 pmSNN-SFO
20h 47m2 stops
$669American Airlines
Find Deal
Mon, Aug 26 - Thu, Sep 5
12:12 am - 7:30 amSFO-SNN
23h 18m1 stop
9:30 am - 5:06 pmSNN-SFO
15h 36m1 stop
$670United Airlines
Find Deal
Sat, Aug 17 - Sat, Aug 31
6:30 am - 7:30 amSFO-SNN
17h 00m2 stops
9:30 am - 5:34 pmSNN-SFO
16h 04m2 stops
$675United Airlines
Find Deal
Sun, Aug 18 - Sat, Aug 31
8:30 am - 10:50 amSFO-SNN
18h 20m1 stop
12:50 pm - 11:12 pmSNN-SFO
18h 22m1 stop
$690KLM
Find Deal
Wed, Sep 4 - Sat, Sep 28
8:30 am - 10:50 amSFO-SNN
18h 20m2 stops
12:50 pm - 1:21 amSNN-SFO
20h 31m1 stop
$695Delta
Find Deal
Thu, Sep 26 - Mon, Sep 30
6:05 am - 10:50 amSFO-SNN
20h 45m2 stops
12:50 pm - 9:20 amSNN-SFO
28h 30m2 stops
$756KLM
Find Deal
Wed, Sep 4 - Sat, Sep 28
9:30 am - 10:50 amSFO-SNN
17h 20m2 stops
12:50 pm - 11:17 pmSNN-SFO
18h 27m2 stops
$849Delta
Find Deal
Tue, Jul 30 - Tue, Aug 6
1:50 pm - 3:45 pmSFO-SNN
17h 55m2 stops
4:55 pm - 1:15 pmSNN-SFO
28h 20m1 stop
$1,144British Airways
Find Deal
Fri, Aug 2 - Mon, Aug 12
3:30 pm - 3:45 pmSFO-SNN
16h 15m1 stop
7:40 am - 5:40 pmSNN-SFO
18h 00m2 stops
$1,150British Airways
Find Deal
Fri, Aug 2 - Thu, Aug 8
1:08 pm - 4:10 pmSFO-SNN
19h 02m2 stops
7:40 am - 8:56 pmSNN-SFO
21h 16m2 stops
$1,506American Airlines
Find Deal
Mon, Jun 10 - Thu, Jun 13

Flights from San Francisco to Shannon - Travel Insights & Trends

Get data-powered insights and trends into flights from San Francisco to Shannon to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Francisco to Shannon?

The average price of all flights from San Francisco to Shannon clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from San Francisco to Shannon, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Shannon, Monday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from San Francisco to Shannon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Francisco to Shannon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to Shannon is March, where tickets cost $723 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $1,276 and $1,274 respectively.

How far in advance should I book a flight from San Francisco to Shannon?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Francisco to Shannon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Francisco to Shannon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

Which airlines provide the cheapest flights from San Francisco to Shannon?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from San Francisco to Shannon found by KAYAK users in the last 72 hours was for $669 on American Airlines, followed by United Airlines ($670). One-way flight deals have also been found from as low as $610 on United Airlines and from $1,334 on American Airlines.

Good to know

Low season

January

High season

August

Cheapest flight

$610
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from San Francisco to Shannon

When to book flights from San Francisco to Shannon

Are your dates flexible? Find out the best times to travel from San Francisco to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Shannon

  • What is the cheapest flight from San Francisco to Shannon?

    In the last 3 days, the lowest price for a flight from San Francisco to Shannon was $610 for a one-way ticket and $669 for a round-trip.

  • Do I need a passport to fly between San Francisco and Shannon?

    Yes

  • Which airports will I be using when flying from San Francisco to Shannon?

    San Francisco and Shannon are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at Shannon.

  • Which aircraft models fly most regularly from San Francisco to Shannon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Shannon?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between San Francisco and Shannon, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from San Francisco to Shannon, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Shannon are Delta and United Airlines. With an average price for the route of $981 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,139 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Francisco to Shannon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Shannon with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and SNN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Shannon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from San Francisco to Shannon

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Shannon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Shannon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10778 reviews
7.4Food
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

Beverage and food services are excellent. We enjoy paying the extra for economy plus for the 3 inches more leg room to be exact.

Flight was delayed by 3 hours. The pilot made up 1 hour during the flight, but that made the wait at the airport 5 hours once you factor getting there 2 hours early.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Very uncomfortable seats and seat backs, and I am only 5’9”. Delayed due to crew issues, spent a long time with no ventilation. Teeny overhead bins. Wifi worked well. Arrived safely.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I was pleasantly surprised - it has been awhile since I traveled with them - other than being delayed leaving Malaga everything ran very smoothly- yes I would travel with aer Lingus again and yes I would recommended

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Flight staff very friendly and helpful where possible. Late flight and travelling with young child, cabin lights remained on for the duration of the flight which was a little disappointing considering the time of the flight. Overall very happy to travel with Aer Lingus.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Delayed due to weather... fine. But then the board us. Rows 15 and back had to go down the stairs and back up the back stair entrance to the plane. No assistance offered. Then they inform us that we are delayed for paperwork for an hour. So why did we board? Then, about 45min later they inform us that it'll be another 60-90mins. Really? No wifi, no seat entertainment, no drink or snacks offered. And we were not allowed to deboard.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

There were a lot of empty rows. As a single passenger I should not have been seated with 2 others. The WiFi didn’t work. The Kosher meal was awful.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

Excellent! Great flight attendants, good food (in business class, at least), very comfortable. Touchscreen and remote wasn’t great.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

Book cheap flights from San Francisco to Shannon

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Shannon found on KAYAK in the last 72 hours.
7/26Fri
2 stopsUnited Airlines
26h 10mSFO-SNN
$610
7/25Thu
2 stopsUnited Airlines
26h 18mSFO-SNN
$616
7/25Thu
3 stops
50h 22mSFO-SNN
$631
6/4Tue
2 stops
34h 25mSFO-SNN
$1,132
6/2Sun
3 stops
42h 15mSFO-SNN
$1,168
6/3Mon
3 stops
43h 20mSFO-SNN
$1,242
6/7Fri
3 stops
48h 40mSFO-SNN
$1,247
7/26Fri
3 stopsAmerican Airlines
23h 55mSFO-SNN
$1,334
6/6Thu
2 stopsKLM
16h 45mSFO-SNN
$1,619
6/4Tue
2 stopsBritish Airways
31h 51mSFO-SNN
$5,943

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Last minute flights from San Francisco to Shannon

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Francisco to Shannon that are departing in the next 10 days.
5/10Fri
multi-stopAmerican Airlines
18h 26mSFO-SNN
5/26Sun
multi-stopAmerican Airlines
21h 33mSNN-SFO
$1,676
5/10Fri
multi-stopUnited Airlines
13h 15mSFO-SNN
5/26Sun
multi-stopUnited Airlines
17h 27mSNN-SFO
$1,727
5/10Fri
multi-stopUnited Airlines
21h 00mSFO-SNN
5/26Sun
multi-stopUnited Airlines
22h 33mSNN-SFO
$1,732

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San Francisco - Shannon Flights

Departure:

San Francisco (undefined)United States

Destination:

Shannon (SNN)Ireland

Return flight deals:

Shannon - San Francisco

Cabin classes:

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