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Cheap Flights from Belgium to San Francisco

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Belgium to San Francisco

Wed, Dec 9 - Sun, Jan 17
Scandinavian Airlines Logo
10:20 am - 2:50 pmBRU  Brussels Bruxelles-National-SFO San Francisco
13h 30m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
4:45 pm - 7:50 pmSFO  San Francisco-BRU Brussels Bruxelles-National
18h 05m1 stop Kastrup Copenhagen
$708Scandinavian Airlines
Wed, Dec 9 - Mon, Jan 18
Scandinavian Airlines Logo
10:20 am - 2:50 pmBRU  Brussels Bruxelles-National-SFO San Francisco
13h 30m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
4:45 pm - 6:35 pmSFO  San Francisco-BRU Brussels Bruxelles-National
16h 50m1 stop Kastrup Copenhagen
$708Scandinavian Airlines
Fri, Feb 5 - Sat, Feb 13
TAP AIR PORTUGAL Logo
5:55 pm - 2:45 pmBRU  Brussels Bruxelles-National-SFO San Francisco
29h 50m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
4:35 pm - 5:05 pmSFO  San Francisco-BRU Brussels Bruxelles-National
15h 30m1 stop Lisbon Humberto Delgado
$715TAP AIR PORTUGAL
Fri, Nov 20 - Sat, Dec 5
TAP AIR PORTUGAL Logo
6:00 am - 4:05 pmBRU  Brussels Bruxelles-National-SFO San Francisco
19h 05m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
4:35 pm - 5:05 pmSFO  San Francisco-BRU Brussels Bruxelles-National
15h 30m1 stop Lisbon Humberto Delgado
$721TAP AIR PORTUGAL
Mon, Feb 22 - Sun, Mar 7
Multiple Airlines Logo
5:35 pm - 9:27 pmBRU  Brussels Bruxelles-National-SFO San Francisco
36h 52m2 stops Casablanca Mohamed V Los Angeles
Multiple Airlines Logo
5:20 pm - 6:25 pmSFO  San Francisco-BRU Brussels Bruxelles-National
16h 05m1 stop Dublin
$722Multiple Airlines
Sat, Apr 24 - Sun, May 9
Multiple Airlines Logo
8:50 pm - 9:55 pmBRU  Brussels Bruxelles-National-SFO San Francisco
34h 05m2 stops Rome Fiumicino Calgary
Multiple Airlines Logo
5:35 pm - 8:45 pmSFO  San Francisco-BRU Brussels Bruxelles-National
18h 10m1 stop Dublin
$729Multiple Airlines
Wed, Dec 9 - Fri, Jan 15
United Airlines Logo
10:30 am - 4:05 pmBRU  Brussels Bruxelles-National-SFO San Francisco
14h 35m1 stop Frankfurt am Main
United Airlines Logo
6:00 am - 8:55 amSFO  San Francisco-BRU Brussels Bruxelles-National
17h 55m2 stops Los Angeles Chicago O'Hare Intl
$842United Airlines
Tue, Dec 8 - Fri, Jan 15
United Airlines Logo
10:30 am - 4:05 pmBRU  Brussels Bruxelles-National-SFO San Francisco
14h 35m1 stop Frankfurt am Main
United Airlines Logo
6:35 am - 8:55 amSFO  San Francisco-BRU Brussels Bruxelles-National
17h 20m1 stop Chicago O'Hare Intl
$842United Airlines
Tue, Dec 22 - Tue, Dec 29
Lufthansa Logo
10:30 am - 4:05 pmBRU  Brussels Bruxelles-National-SFO San Francisco
14h 35m1 stop Frankfurt am Main
Lufthansa Logo
5:00 am - 8:55 amSFO  San Francisco-BRU Brussels Bruxelles-National
18h 55m1 stop Chicago O'Hare Intl
$854Lufthansa
Mon, Dec 28 - Tue, Jan 19
Lufthansa Logo
12:45 pm - 7:35 pmBRU  Brussels Bruxelles-National-SFO San Francisco
15h 50m1 stop Munich Franz Josef Strauss
Lufthansa Logo
9:40 pm - 11:10 pmSFO  San Francisco-BRU Brussels Bruxelles-National
16h 30m1 stop Munich Franz Josef Strauss
$3,968Lufthansa
Booking Insights

KAYAK's insights & trends for flights to San Francisco

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

What is the cheapest month to fly to San Francisco?

The cheapest month for flights to San Francisco is February, where tickets cost $721 on average for return flights. On the other hand, the most expensive months are June and August, where the average cost of tickets from Belgium is $1,028 and $985 respectively. For one-way flights, the best month to travel is December with an average price of $561.

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

To get a below average price, you should book around 5 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

January

Cheapest flight

$338
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Brussels Airport to San Francisco

FAQs - booking San Francisco flights

  • How far is San Francisco Airport from central San Francisco?

    Central San Francisco is 11 miles away from San Francisco Airport.

  • What is the name of San Francisco’s airport?

    When flying to San Francisco, you'll arrive at San Francisco Airport (SFO). The airport is also known as San Francisco or San Francisco Intl.

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

    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 to San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to San Francisco?

    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 San Francisco with an airline and back with another airline.

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

    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 San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to San Francisco are there each week?

    Each week there are around 11,673 direct flights from within Belgium to San Francisco. The most common day for departures is Sunday, with 18% of flights taking off on this day.

Top tips for finding cheap flights to San Francisco

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Reviews of the top 5 airlines serving from Belgium to San Francisco

 
Need help choosing which airline to fly with to San Francisco? 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.
7.5
Scandinavian AirlinesOverall score based on 2028 reviews
8.1Crew
7.7Boarding
6.8Entertainment
6.8Food
7.4Comfort
Airline reviews

Excellent comfort, service, boarding, deplaning. Bad meal (preselected vegetarian) but only vegan was available from a passenger cancellation. Bland and not very filling except for thin passengers.

8.0 ExcellentAnonymous, Nov 2026
Read more Scandinavian Airlines reviews

Excellent comfort, service, boarding, deplaning. Bad meal (preselected vegetarian) but only vegan was available from a passenger cancellation. Bland and not very filling except for thin passengers.

Some of the rudest flight crew I have encountered in over 40 years of flying. Despite pre-ordering a vegetarian meal, the only options provided included meat, with no other choices or substitutes offered. Additionally, the sound on the entertainment system was not working. With flight delays had only 20 minutes to make it to next boarding gate and after running most of the way made it to flight with 2 minutes to spare Will never fly SAS again and I am looking for partial refund for false advertisement.

My biggest recurring disappointment is that I buy a pre-assihned seat while pucrhasing the ticket and then when checking in it disappeared and I have to buy it again. That's very disappointing and actually a reason I will actively avoid SAS in the future

Payed $140 xtra for seat arrangement Did not get the preselected seats neiter outbound nor inbound. Absolutely not worth the xtra money

not good missed my connection SAS did not leave me anywhere near enough time to make my connection. Ended up adding about 10 hours to my travel day

Overall a great experience. I didn’t like that they didn’t assign seats until we arrived at airport. All the employees we interacted with at the airport and on the flight were kind and helpful.

Cut out the nickel and dime pricing for "seat selection" and baggage, To do this on an international flight is just mind boggling. Seriously, why treat customers this way??? Nobody wants these hidden extra fees and everybody hates them. Also plane was too warm and no air vent, and water dripped from the ceiling at one point,

Maybe more diverse entertainment. Although the inflight cameras were amazing 10/10

I upgraded to economy plus and it’s so worth the price. The crew is exceptional and the food is pretty decent. I would definitely fly with them again.

I paid for wifi and it worked about a total of 5 min. Feel ripped off

i’m The staff on my flight were amazing as always, beautiful professional staff, they do amazing job. the food ? room for improvement

The agents at the boarding desk were not very helpful, however the hostesses on board the flight were great, the food was ok, and there were lots for choices for entertainment. I was stuck in an middle row seat which was a pain on a full flight, but otherwise the flight was great.

Very helpful staff especially when helping with the missing baggage

OK overall. Flight was delayed Crew on flight was good

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Flight was great. Had to wait almost 100 minutes for luggage (some problem in the delivery). This may not be an Aer Lingus problem, but an SFO problem.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

Starlink internet made the flight time shrink and I was able to work.

The plane was so old. I paid a ridiculous amount to fly business and there was no internet for six hours! This can't be happening in 2026 and especially in cross country flights where there are a high volume of business travelers.

The food could have been better and the entertainment could have better movies or streaming.

My flight from Boston to SFO was fine. Crew was friendly and helpful. Food was mediocre. Fright from SFO to MNL was not as good. My flight attendant was friendly but didn’t seem to have a lot of experience. She seemed overwhelmed. Also, this was the only red eye business class flight I’ve flown which only served dinner 2 hours after takeoff in a 13 hr flight. When I woke up 1 hr before landing, everyone was eating so I assumed bkft was being served. I pushed my button for help and no one came so I approached my flight attendant and she said they don’t serve bkft but she gave me choices for lunch or dinner. I routinely fly business class but I was disappointed with the lack of service and attention I was given on this flight. Also, most airlines will offer a snack or coffee before bkft is served but this was not offered during this flight. Overall, it was disappointing.

The food could be much better. Also very unfortunate that most of business class seats were empty but I could not upgrade.

Bag got checked but I thought one personal item was guaranteed.

The seats are very small, that is all the staff did a good job.

The flight was for my mom in wheelchair the staff in Newark wer not friendly took a long time to even get a wheelchair she almost missed her flight because they finally got a chair few minutes before boarding they had to rush her to the gate. They took her carryon and checked it as a bag told her don’t worry free of charge but they charge the credit card anyway. She also told me the seats are not comfortable at all as if they were broken she could feel the bars in the seat SFO staff was much better overall she had the worst experience

First class flight crew was barely available. They came through 3 times while we were on the plane for nearly 4 hours.

United did nit provide any updated on flight crew not bein available until boarding time started. It was bad. Itws alate night flight and there no proactive communication and iha d an important meeting that i missed due to thus

Excellent! Flight left a bit late but overall a pleasant experience.

Business class seats aren't comfortable. Food was not good.

The layover was only one hour and a huge line for passport control. If I didn’t cut the line and argue was every single official, I would’ve spent the night in this one. Obviously.TAP AIR people. do not take into account.this problem with their flight scheduling, which is extremely frustrating. Poor food choices, on the pasta was offered, they ran out of chicken right away. All the sodas and water poured in a tiny 70 mL cups, which is not enough to keep hydrated on the long flight. I had to ask for 34 cups at a time. Flight attendant seemed to be tired and overworked.

Got in on time. Food was the worst ever. Comfort was terrible. Check in was incredibly bad.

Flight delays. Mad rush with no help from staff. Staff for TAP is elusive like the Tasmanian devil... you hear about it but never seen it. Seats were the only thing that was ok as its lie flat, but trying to sleep was like being at a concert as the crew were chit chatting non stop while you are trying to sleep. Food was seriously better in Premium EY on other airlines like Singapore Airlines, Lufthansa, United. We traveled Business Class on TAP. Crew were friendly enough but not very present at lull period of flight.

Crew woke me up to see if I wanted food - NEVER want food on a 12 hour flight more than I want to sleep. Sleep was not easy, as a child screamed and threw fits 70%of the flight. That same child kicked my seat most of the flight. BUT, despite the child and a poor boarding effort, the rest was solid. The crew worked hard otherwise - just don’t wake me up IF I actually get to sleep.

Way too much money for the experience, would have been better in economy

It was excellent - good value; good service. No complaints; my sister moved to Portugal so I will be flying there annually and will continue to use TAP. I love that I can get nonstop flight from SFO to Lisbon.

If you miss any flight in a Multi-City flight plan with TAP, all remaining flights will be automatically terminated immediately. Their support line is no help at all, and you'll be stuck paying again for another flight.

the cancellation of my earlier flight caused me to miss this connection as well.

After flying on Icelandair to England and getting a greeting glass of champagne, free drinks and salmon I returned to the US on United for around the same price and got told immediately that I would have to eat a vegetarian meal because everything else was gone and every time I paused thinking in flight entertainment I got advertisements on the screen. On the Icelandair flight I had a great selection of documentary films and on United I was reduced to watching the Spider-Man movie. Guest which airline I look forward to flying again?

The flight from FRA to SFO was uncomfortable. The crew allowed people to change seats after boarding finished, but then made some people move back to their seats but not others, which resulted in my wife and I having to sit in two middle seats for an 11 hour flight. The entertainment system was not working well throughout the flight, and stopped working completely around hour 8.

Inflight food quality is definitely declining. Only one hot food was served and rest of were boxed meals. That’s not how was done before. Better to fly Asia or Qatar carriers for better service.

The seats on Lufthansa’s international business class on the A350-900 is the worst product in the market. Our chief purser was AMAZING though. She is the best FA I have had in many years.

I have very bad experience with United because Vince two weeks that I did not receive my luggage yet

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I was very happy with everything, thank you for the smooth flight ✈️

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