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Cheap flights from San Francisco to Bilbao from $378

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 Bilbao departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Francisco to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
4:35 pm - 11:30 am
SFO
-
BIO
33h 55m
1 stop
TAP AIR PORTUGAL Logo
6:50 pm - 2:35 pm
BIO
-
SFO
28h 45m
1 stop
$648TAP AIR PORTUGAL
Wed, Jul 29 - Tue, Sep 22
TAP AIR PORTUGAL Logo
4:30 pm - 6:00 pm
SFO
-
BIO
16h 30m
1 stop
TAP AIR PORTUGAL Logo
6:50 pm - 2:35 pm
BIO
-
SFO
28h 45m
1 stop
$709TAP AIR PORTUGAL
Mon, Aug 17 - Tue, Sep 1
TAP AIR PORTUGAL Logo
7:20 pm - 11:30 am
SFO
-
BIO
31h 10m
1 stop
TAP AIR PORTUGAL Logo
6:50 pm - 2:35 pm
BIO
-
SFO
28h 45m
1 stop
$710TAP AIR PORTUGAL
Tue, Sep 1 - Tue, Sep 8
TAP AIR PORTUGAL Logo
4:30 pm - 11:40 am
SFO
-
BIO
34h 10m
1 stop
TAP AIR PORTUGAL Logo
12:25 pm - 2:30 pm
BIO
-
SFO
35h 05m
1 stop
$720TAP AIR PORTUGAL
Mon, Aug 10 - Wed, Aug 26
Lufthansa Logo
9:40 pm - 11:05 pm
SFO
-
BIO
16h 25m
1 stop
Lufthansa Logo
6:50 pm - 7:35 pm
BIO
-
SFO
33h 45m
1 stop
$722Lufthansa
Mon, Nov 30 - Mon, Dec 21
United Airlines Logo
9:40 pm - 11:05 pm
SFO
-
BIO
16h 25m
1 stop
United Airlines Logo
6:45 am - 12:35 pm
BIO
-
SFO
14h 50m
1 stop
$727United Airlines
Mon, Nov 9 - Thu, Nov 12
TAP AIR PORTUGAL Logo
7:20 pm - 11:30 am
SFO
-
BIO
55h 10m
2 stops
TAP AIR PORTUGAL Logo
6:50 pm - 2:35 pm
BIO
-
SFO
28h 45m
1 stop
$728TAP AIR PORTUGAL
Tue, Sep 1 - Tue, Sep 8
United Airlines Logo
6:00 am - 11:05 pm
SFO
-
BIO
32h 05m
2 stops
United Airlines Logo
6:45 am - 4:05 pm
BIO
-
SFO
18h 20m
1 stop
$732United Airlines
Mon, Nov 9 - Thu, Nov 12
TAP AIR PORTUGAL Logo
4:30 pm - 6:00 pm
SFO
-
BIO
16h 30m
1 stop
TAP AIR PORTUGAL Logo
7:45 pm - 2:05 pm
BIO
-
SFO
27h 20m
1 stop
$733TAP AIR PORTUGAL
Mon, Aug 24 - Sun, Aug 30
Air Canada Logo
6:53 pm - 5:00 pm
SFO
-
BIO
37h 07m
2 stops
Air Canada Logo
6:45 am - 4:06 pm
BIO
-
SFO
18h 21m
2 stops
$739Air Canada
Mon, Nov 9 - Thu, Nov 12

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TAP AIR PORTUGAL flights from San Francisco to Bilbao

Our best TAP AIR PORTUGAL deals on San Francisco to Bilbao flight tickets
TAP AIR PORTUGAL
Jul 29
SFO4:35 pmSan Francisco
33h 55m
1 stop
BIO11:30 amBilbao
Sep 22
BIO6:50 pmBilbao
28h 45m
1 stop
SFO2:35 pmSan Francisco
$648
TAP AIR PORTUGAL
Aug 17
SFO4:30 pmSan Francisco
16h 30m
1 stop
BIO6:00 pmBilbao
Sep 1
BIO6:50 pmBilbao
28h 45m
1 stop
SFO2:35 pmSan Francisco
$709
TAP AIR PORTUGAL
Sep 1
SFO7:20 pmSan Francisco
31h 10m
1 stop
BIO11:30 amBilbao
Sep 8
BIO6:50 pmBilbao
28h 45m
1 stop
SFO2:35 pmSan Francisco
$710

British Airways flights from San Francisco to Bilbao

Our best British Airways deals on San Francisco to Bilbao flight tickets
British Airways
Jul 4
SFO6:15 amSan Francisco
17h 15m
2 stops
BIO8:30 amBilbao
Jul 6
BIO1:45 pmBilbao
33h 05m
1 stop
SFO1:50 pmSan Francisco
$2,663
British Airways
Jul 4
SFO2:54 pmSan Francisco
18h 41m
2 stops
BIO6:35 pmBilbao
Jul 6
BIO9:35 pmBilbao
31h 30m
2 stops
SFO8:05 pmSan Francisco
$2,784
British Airways
Jul 4
SFO6:15 amSan Francisco
17h 15m
2 stops
BIO8:30 amBilbao
Jul 6
BIO9:15 amBilbao
20h 55m
2 stops
SFO9:10 pmSan Francisco
$2,787

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 27, 2026.
Use the filters below to find and compare flights from San Francisco to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Wed 7/29

4:35 pm-11:30 am

1 stop33h 55m

Bilbao

Tue 9/22

6:50 pm-2:35 pm

1 stop28h 45m

$648

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 8/17

4:30 pm-6:00 pm

1 stop16h 30m

Bilbao

Tue 9/1

6:50 pm-2:35 pm

1 stop28h 45m

$709

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 9/1

7:20 pm-11:30 am

1 stop31h 10m

Bilbao

Tue 9/8

6:50 pm-2:35 pm

1 stop28h 45m

$710

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 8/10

4:30 pm-11:40 am

1 stop34h 10m

Bilbao

Wed 8/26

12:25 pm-2:30 pm

1 stop35h 05m

$720

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 11/30

9:40 pm-11:05 pm

1 stop16h 25m

Bilbao

Mon 12/21

6:50 pm-7:35 pm

1 stop33h 45m

$722
Quickest round-trip

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 11/9

9:40 pm-11:05 pm

1 stop16h 25m

Bilbao

Thu 11/12

6:45 am-12:35 pm

1 stop14h 50m

$727

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 9/1

7:20 pm-11:30 am

2 stops55h 10m

Bilbao

Tue 9/8

6:50 pm-2:35 pm

1 stop28h 45m

$728

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 11/9

6:00 am-11:05 pm

2 stops32h 05m

Bilbao

Thu 11/12

6:45 am-4:05 pm

1 stop18h 20m

$732

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 8/24

4:30 pm-6:00 pm

1 stop16h 30m

Bilbao

Sun 8/30

7:45 pm-2:05 pm

1 stop27h 20m

$733

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 11/9

6:53 pm-5:00 pm

2 stops37h 07m

Bilbao

Thu 11/12

6:45 am-4:06 pm

2 stops18h 21m

$739

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

How to get the cheapest flight ticket from San Francisco to Bilbao

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 typical price of a round-trip flight between San Francisco and Bilbao?

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from San Francisco is in October. Flight prices, which tend to average around $552, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in October, then November is your next best option. Flight prices from San Francisco to Bilbao during November average around $625.

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

You are more likely to see cheaper flights to Bilbao from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Bilbao for around $842 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bilbao from San Francisco for as low as $510 on momondo.

Can stopping save me money on San Francisco to Bilbao flights?

You could potentially save up to 4% on your flight if you consider stops on a San Francisco to Bilbao flight.

How have San Francisco to Bilbao flight prices changed over time?

As of June 2026, prices for San Francisco to Bilbao flights are approximately 28% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Bilbao according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Bilbao (SFO to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Bilbao

Fastest flight time

16h 25m

Direct flights

None
The fastest flight from San Francisco to Bilbao takes 16h 25m
There are no direct flights from San Francisco to Bilbao. There are no popular flight routes from San Francisco to Bilbao.
Search flight deals

Frequently asked questions about flying from San Francisco to Bilbao

  • How far is San Francisco to Bilbao by plane?

    There are 5671.5 mi between San Francisco and Bilbao. Flights usually cover this in 16h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San Francisco Airport to Bilbao Airport?

    Prices for flights from San Francisco Airport to Bilbao Airport refresh daily.

  • How many operators does momondo search for flights from San Francisco Airport to Bilbao Airport?

  • How old do you have to be to fly from San Francisco Airport to Bilbao Airport?

    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 Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The travel and health documents required for your trip to Bilbao Airport 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 Bilbao Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from San Francisco to Bilbao?

Best airlines flying from San Francisco to Bilbao

Compare and see reviews for airlines that fly from San Francisco to Bilbao with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $461Free CancellationRating
6.8
8,102 reviews
Search Lufthansa flights
KLMPriceFrom $470Free CancellationRating
7.8
1,531 reviews
Search KLM flights
United AirlinesPriceFrom $572Free CancellationRating
7.4
9,896 reviews
Search United Airlines flights

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Bilbao?

It is quick and easy to find San Francisco to Bilbao flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bilbao that suits you.

Can I find flights from San Francisco to Bilbao with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Bilbao from San Francisco with this policy.

How can momondo help me find flights from San Francisco to Bilbao?

momondo provides multiple filters to help you find the best flight to Bilbao from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to Bilbao right now. Can momondo alert me if prices change?

Price alerts on flights to Bilbao from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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