Is United Airlines the cheapest airline to fly with from San Francisco to Madrid?

With an average price of $854 return, United Airlines is not the cheapest airline to fly from San Francisco to Madrid with. Instead, for the lowest price, our data suggests flying with TAP AIR PORTUGAL, where a return flight costs $456 on average.

What is the cheapest United Airlines flight from San Francisco to Madrid?

In the last 3 days, the lowest price for a flight with United Airlines from San Francisco to Madrid was $442 for a return flight and $341 for a one-way flight.

Does United Airlines fly direct to Madrid from San Francisco?

No, United Airlines does not fly the route directly.

What’s the cheapest day of the week to fly from San Francisco to Madrid with United Airlines?

On average, the cheapest day of the week to fly from San Francisco to Madrid with United Airlines is Saturday, when prices are around $399. The most expensive day is generally Wednesday, where the average price is around $569.

What’s the cheapest month to fly from San Francisco to Madrid with United Airlines?

The cheapest month for United Airlines flights to Madrid from San Francisco is generally October, where plane tickets cost $456 on average. If possible, try to avoid the most expensive months of June and December, where tickets cost $804 and $897 respectively.

$442 Cheap United Airlines Flights from San Francisco to Madrid

SFO - MAD

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Flight Deals

Cheap United Airlines Flight Deals from San Francisco to Madrid

Here are some of the best deals found on KAYAK recently from United Airlines for round-trip flights from San Francisco to Madrid 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.

Round-trip

One-way

Last minute

Recent round-trip United Airlines flight deals from San Francisco to Madrid

Mon, Feb 9 - Tue, Mar 3

8:25 am - 8:00 am

SFO

MAD

14h 35m1 stop

1:35 pm - 1:38 pm

MAD

SFO

33h 03m2 stops

$517United Airlines

Tue, Feb 10 - Tue, Feb 17

11:56 pm - 8:00 am

SFO

MAD

23h 04m2 stops

1:35 pm - 1:22 pm

MAD

SFO

32h 47m2 stops

$522United Airlines

Mon, Jan 19 - Tue, Feb 3

12:43 am - 9:15 am

SFO

MAD

23h 32m3 stops

1:35 pm - 9:35 pm

MAD

SFO

41h 00m2 stops

$523United Airlines

Mon, Jan 26 - Fri, Feb 6

8:25 am - 8:00 am

SFO

MAD

14h 35m1 stop

6:00 am - 12:40 pm

MAD

SFO

15h 40m1 stop

$527United Airlines

Mon, Apr 13 - Thu, Apr 30

10:41 pm - 8:05 am

SFO

MAD

24h 24m1 stop

6:05 am - 12:40 pm

MAD

SFO

15h 35m1 stop

$528United Airlines

Wed, Feb 11 - Wed, Feb 25

6:25 am - 8:00 am

SFO

MAD

16h 35m2 stops

5:55 am - 8:10 pm

MAD

SFO

23h 15m1 stop

$532United Airlines

Tue, Feb 24 - Tue, Mar 10

5:10 am - 9:15 am

SFO

MAD

19h 05m2 stops

9:05 am - 4:55 pm

MAD

SFO

15h 50m1 stop

$533United Airlines

Sun, Apr 12 - Fri, May 1

8:10 am - 6:50 am

SFO

MAD

13h 40m1 stop

11:15 am - 10:09 pm

MAD

SFO

19h 54m1 stop

$537United Airlines

Sun, Jan 25 - Wed, Feb 4

12:43 am - 8:00 am

SFO

MAD

22h 17m3 stops

8:30 am - 10:54 am

MAD

SFO

35h 24m2 stops

$538United Airlines

Tue, Apr 14 - Fri, May 1

12:45 am - 8:05 am

SFO

MAD

22h 20m2 stops

11:15 am - 7:19 pm

MAD

SFO

17h 04m1 stop

$542United Airlines

Useful Info

Low season	January
High season	December
Cheapest flight	$442
Average price round-trip	$1,158

Best time to beat the crowds with an average 21% drop in price.

Most popular time to fly with an average 53% increase in price.

Flight from San Francisco to Madrid

(price for this month)

When to Book Flights with United Airlines from San Francisco to Madrid

Average price per month

Flight prices as travel date approaches

Is United Airlines the cheapest airline to fly with from San Francisco to Madrid?
With an average price of $854 return, United Airlines is not the cheapest airline to fly from San Francisco to Madrid with. Instead, for the lowest price, our data suggests flying with TAP AIR PORTUGAL, where a return flight costs $456 on average.
What is the cheapest United Airlines flight from San Francisco to Madrid?
In the last 3 days, the lowest price for a flight with United Airlines from San Francisco to Madrid was $442 for a return flight and $341 for a one-way flight.
Does United Airlines fly direct to Madrid from San Francisco?
No, United Airlines does not fly the route directly.
What’s the cheapest day of the week to fly from San Francisco to Madrid with United Airlines?
On average, the cheapest day of the week to fly from San Francisco to Madrid with United Airlines is Saturday, when prices are around $399. The most expensive day is generally Wednesday, where the average price is around $569.
What’s the cheapest month to fly from San Francisco to Madrid with United Airlines?
The cheapest month for United Airlines flights to Madrid from San Francisco is generally October, where plane tickets cost $456 on average. If possible, try to avoid the most expensive months of June and December, where tickets cost $804 and $897 respectively.

7.4

Good9,116 verified ratings

8.1Crew

7.3Comfort

7.1Entertainment

7.7Boarding

6.6Food

Pros +

Flight was quick and easy. (in 2447 reviews)
"Clean plane, organized crew." (in 2084 reviews)

Show reviews that mention

10.0 Wonderful

Mario, Dec 2025

SJO

EWR

It was good, although we could not get our preferred seats, we did enjoy the whole experience from Costa Rica. I still don't understand why our luggage is not the first to come out at the band.

10.0 Wonderful

Verified traveler, Dec 2025

IAD

VIE

Sat next to a one year old. She crawled all over the place and made me laugh.

2.0 Poor

jbritto, Dec 2025

ORD

YYZ

Not United Airlines' fault. It's ORL airport's fault.

10.0 Wonderful

Dr. Joseph, Dec 2025

ORD

EWR

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

10.0 Wonderful

Howard, Dec 2025

FLL

DEN

Was an easy flight

6.0 Okay

Verified traveler, Dec 2025

IAH

SFO

Houston airport is awful. Inefficient and rude.

8.0 Very good

Verified traveler, Dec 2025

EZE

IAH

everything was pretty good. Houston airport is awful. Unnecessarily inefficient; people working there are rude. Badly run

10.0 Wonderful

Verified traveler, Dec 2025

SFO

BOS

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

10.0 Wonderful

Rob, Dec 2025

RIC

ORD

They did the one thing that really matters - got to Chicago early.

8.0 Very good

Verified traveler, Dec 2025

ORD

PHX

I liked the snacks and the flight attendants were friendly.

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

Airlines

Cabin class

Complete your trip

Flights to other cities

Return flight deals

United Airlines flights

Other airlines flying from San Francisco to Madrid

British Airways flights from San Francisco to Madrid

TAP AIR PORTUGAL flights from San Francisco to Madrid

SFO - MAD

$442 Find Cheap United Airlines Flights from San Francisco to Madrid

Search hundreds of travel sites at once for deals on United Airlines flights from San Francisco to Madrid

Cheap United Airlines Flight Deals from San Francisco to Madrid

Recent round-trip United Airlines flight deals from San Francisco to Madrid

Recent one-way United Airlines flight deals from San Francisco to Madrid

Recent last minute United Airlines flight deals from San Francisco to Madrid

Good to know

When to Book Flights with United Airlines from San Francisco to Madrid

FAQs for flying to Madrid with United Airlines

Is United Airlines the cheapest airline to fly with from San Francisco to Madrid?

With an average price of $854 return, United Airlines is not the cheapest airline to fly from San Francisco to Madrid with. Instead, for the lowest price, our data suggests flying with TAP AIR PORTUGAL, where a return flight costs $456 on average.

What is the cheapest United Airlines flight from San Francisco to Madrid?

In the last 3 days, the lowest price for a flight with United Airlines from San Francisco to Madrid was $442 for a return flight and $341 for a one-way flight.

Does United Airlines fly direct to Madrid from San Francisco?

No, United Airlines does not fly the route directly.

What’s the cheapest day of the week to fly from San Francisco to Madrid with United Airlines?

On average, the cheapest day of the week to fly from San Francisco to Madrid with United Airlines is Saturday, when prices are around $399. The most expensive day is generally Wednesday, where the average price is around $569.

What’s the cheapest month to fly from San Francisco to Madrid with United Airlines?

The cheapest month for United Airlines flights to Madrid from San Francisco is generally October, where plane tickets cost $456 on average. If possible, try to avoid the most expensive months of June and December, where tickets cost $804 and $897 respectively.

United Airlines Customer Reviews

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

Other airlines flying from San Francisco to Madrid

Flight deals from the most popular airlines with KAYAK users flying the route

Cabin class types available on flights to Madrid

Cabin classes available on flights to San Francisco. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Madrid with a hotel stay or car rental

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The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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The most popular destinations for flights with United Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.