$221 Find Cheap Flights from San Francisco to Belgium

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 Belgium departing on 5/6. 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
1 adult, Economy, 0 bags

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Book Cheap San Francisco to Belgium Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Belgium 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Belgium

Mon, Jan 26 - Wed, Feb 11
Scandinavian Airlines Logo
4:40 pm - 2:30 pm
SFO
-
BRU
12h 50m1 stop
Scandinavian Airlines Logo
3:10 pm - 2:35 pm
BRU
-
SFO
32h 25m1 stop
$491Scandinavian Airlines
Mon, Jan 26 - Wed, Feb 11
Scandinavian Airlines Logo
4:40 pm - 2:30 pm
SFO
-
BRU
12h 50m1 stop
Scandinavian Airlines Logo
11:30 am - 2:35 pm
BRU
-
SFO
36h 05m2 stops
$492Scandinavian Airlines
Thu, Jan 22 - Thu, Jan 29
Scandinavian Airlines Logo
4:40 pm - 2:30 pm
SFO
-
BRU
12h 50m1 stop
Scandinavian Airlines Logo
7:20 pm - 2:35 pm
BRU
-
SFO
28h 15m2 stops
$493Scandinavian Airlines
Mon, Jan 26 - Wed, Feb 11
Scandinavian Airlines Logo
4:40 pm - 2:30 pm
SFO
-
BRU
12h 50m1 stop
Scandinavian Airlines Logo
11:30 am - 2:35 pm
BRU
-
SFO
36h 05m2 stops
$494Scandinavian Airlines
Fri, Jan 30 - Sun, Feb 8
Scandinavian Airlines Logo
4:40 pm - 2:30 pm
SFO
-
BRU
12h 50m1 stop
Scandinavian Airlines Logo
7:45 pm - 2:35 pm
BRU
-
SFO
27h 50m2 stops
$495Scandinavian Airlines
Thu, Jan 22 - Mon, Feb 9
Scandinavian Airlines Logo
4:40 pm - 7:50 pm
SFO
-
BRU
18h 10m1 stop
Scandinavian Airlines Logo
10:20 am - 2:35 pm
BRU
-
SFO
13h 15m1 stop
$496Scandinavian Airlines
Fri, Jan 30 - Wed, Feb 4
Scandinavian Airlines Logo
4:40 pm - 11:55 am
SFO
-
BRU
34h 15m2 stops
Scandinavian Airlines Logo
7:20 pm - 2:35 pm
BRU
-
SFO
28h 15m2 stops
$497Scandinavian Airlines
Thu, Jan 29 - Sun, Feb 8
Scandinavian Airlines Logo
3:10 pm - 9:40 am
SFO
-
BRU
33h 30m1 stop
Scandinavian Airlines Logo
3:10 pm - 2:35 pm
BRU
-
SFO
32h 25m1 stop
$498Scandinavian Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
5:45 pm - 11:00 pm
SFO
-
CRL
20h 15m2 stops
Multiple Airlines Logo
5:35 pm - 4:10 pm
CRL
-
SFO
31h 35m1 stop
$819Multiple Airlines
Sun, May 3 - Sun, May 17
Multiple Airlines Logo
5:45 pm - 6:15 pm
SFO
-
CRL
15h 30m1 stop
Multiple Airlines Logo
7:00 am - 5:55 pm
CRL
-
SFO
19h 55m2 stops
$863Multiple Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Belgium flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Belgium, 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 Belgium is January, when tickets cost $643 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,169 and $1,068 respectively.

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

The average price of all round-trip flights from San Francisco to Belgium clicked on KAYAK for each day over the last 12 months.

When flying from San Francisco to Belgium, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Sundays and the most expensive ones on Mondays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Belgium, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Belgium, you should book around 4 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$221
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from San Francisco to Brussels Airport

FAQs - booking Belgium flights

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

    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 Belgium.

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

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

    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 from San Francisco to Belgium 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 from San Francisco to Belgium?

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

  • What is the cheapest time of day to fly to Belgium?

    The cheapest time of day to fly to Belgium is generally in the evening, when round-trip flights cost $727 on average. Morning departures are around 74% more expensive than evening flights, on average. The most expensive time of day to fly to Belgium is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,267.

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

 
Need help choosing which airline to fly with from San Francisco to Belgium? 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.
7.4
Scandinavian AirlinesOverall score based on 1625 reviews
7.6Boarding
6.7Entertainment
8.0Crew
6.7Food
7.3Comfort
Airline reviews

Amazing! Everyone was so nice and the food was so good!!

10.0 ExcellentDivya, Dec 2025
LAX - CPH
Read more Scandinavian Airlines reviews

Amazing! Everyone was so nice and the food was so good!!

Terrible customer service. The flight attendants were rude. We experienced significant turbulence for a large portion of the flight and there was very little check in from the flight deck. The space was extremely limited to the point where it felt like torture. Never again

I was surprised how good an American airline can be - I was really impressed.

Excellent service throughout. Airport process is quick and easy. Very courteous staff. Great service in the plane! Just outstanding punctuality and service overall!!

I have paid for extra legroom on my flight. My seat was broken and did not recline. The crew could not fix it and refused to provide me with another seat

Over all experience was good. However the connection time was too short at CPG. We missed our connecting flight to AMS as the passport control line was too long and by the time we got our passport control done it was too late I wish there were some SAS staff to help us out at the passport control center Though they put us in a KLM flight from CPG to AMS, That flight was also delayed by over two hours

No vegetarian option was provided for the regular meal or the pre-landing snack.

The Scandinavian flight was excellent, however the second flight was partnered with TAP Portugal which was not so good. crowded gate area with no chairs, delayed flight, bad boarding process, no entertainment system onboard, and the baggage didn’t get to the carousel until well over an hour which caused our taxi that was waiting to leave. Love SAS, hate TAP.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

I was not admitted to the flight!!! I need a refund for this

Well, I think we left close to on time. Crew was “eh”.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

I had zero issues with the flight. I did have issues with the staff at the airport. We missed out flight due to a delay with another airline. Talking to the staff and trying to get a new flight arranged was challenging. One guy was able to try to help us and got us on a new flight, but other staff was dismissive and clearly let us know it wasn’t their problem. All I kept thinking was… this is why air lingus has such a poor customer service reputation. I will be avoiding this airline in the future.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

They specifically asked about my flight from bordeaux to Dublin, which was fine. A little lacking but for a 1 and a half hour flight - it was more than enough. I transferred at Dublin and went to Newark. And wow that flight was incredible.

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

The food could be better, more snacks. And have some plugs to chargue the phone.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

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

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

Everything you need to know for your flight from San Francisco to Belgium

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