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Cheap flights from Bilbao to San Francisco from $344

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Bilbao to San Francisco departing on 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Bilbao to San Francisco

Cheap round-trip flights

TAP AIR PORTUGAL Logo
12:10 pm - 4:05 pmBIO-SFO
36h 55m1 stop
TAP AIR PORTUGAL Logo
4:35 pm - 5:55 pmSFO-BIO
16h 20m1 stop
$433TAP AIR PORTUGAL
Find Deal
Thu, Nov 13 - Sat, Nov 29
TAP AIR PORTUGAL Logo
6:40 pm - 2:30 pmBIO-SFO
28h 50m1 stop
TAP AIR PORTUGAL Logo
4:35 pm - 5:55 pmSFO-BIO
16h 20m1 stop
$439TAP AIR PORTUGAL
Find Deal
Tue, Feb 17 - Mon, Feb 23
TAP AIR PORTUGAL Logo
12:10 pm - 4:05 pmBIO-SFO
36h 55m1 stop
TAP AIR PORTUGAL Logo
4:35 pm - 5:55 pmSFO-BIO
16h 20m1 stop
$452TAP AIR PORTUGAL
Find Deal
Thu, Nov 13 - Sat, Nov 29
Multiple Airlines Logo
6:45 am - 7:01 pmBIO-SFO
21h 16m2 stops
Multiple Airlines Logo
10:40 am - 11:15 pmSFO-BIO
27h 35m2 stops
$496Multiple Airlines
Find Deal
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
6:45 am - 7:00 pmBIO-SFO
21h 15m2 stops
Multiple Airlines Logo
10:31 am - 12:50 pmSFO-BIO
17h 19m2 stops
$521Multiple Airlines
Find Deal
Fri, Feb 13 - Sat, Feb 21
Scandinavian Airlines Logo
7:30 pm - 2:35 pmBIO-SFO
28h 05m1 stop
Scandinavian Airlines Logo
4:40 pm - 6:40 pmSFO-BIO
17h 00m1 stop
$536Scandinavian Airlines
Find Deal
Fri, Jan 16 - Thu, Jan 22
United Airlines Logo
12:50 pm - 8:10 pmBIO-SFO
16h 20m1 stop
United Airlines Logo
7:00 am - 10:50 amSFO-BIO
18h 50m2 stops
$563United Airlines
Find Deal
Mon, Jan 12 - Wed, Jan 21
United Airlines Logo
6:45 am - 11:43 amBIO-SFO
37h 58m2 stops
United Airlines Logo
7:00 am - 10:50 amSFO-BIO
18h 50m2 stops
$569United Airlines
Find Deal
Mon, Jan 12 - Wed, Jan 21
KLM Logo
6:50 am - 11:50 amBIO-SFO
14h 00m1 stop
KLM Logo
2:00 pm - 4:30 pmSFO-BIO
17h 30m2 stops
$575KLM
Find Deal
Thu, Jan 15 - Wed, Jan 21
KLM Logo
6:50 am - 5:48 pmBIO-SFO
19h 58m2 stops
KLM Logo
10:10 am - 11:30 amSFO-BIO
16h 20m2 stops
$579KLM
Find Deal
Tue, Feb 17 - Mon, Feb 23

TAP AIR PORTUGAL flights from Bilbao to San Francisco

Our best TAP AIR PORTUGAL deals on Bilbao to San Francisco flight tickets
TAP AIR PORTUGAL
Nov 13
BIO12:10 pmBilbao
36h 55m
1 stop
SFO4:05 pmSan Francisco
Nov 29
SFO4:35 pmSan Francisco
16h 20m
1 stop
BIO5:55 pmBilbao
$433
Find similar
TAP AIR PORTUGAL
Feb 17
BIO6:40 pmBilbao
28h 50m
1 stop
SFO2:30 pmSan Francisco
Feb 23
SFO4:35 pmSan Francisco
16h 20m
1 stop
BIO5:55 pmBilbao
$439
Find similar
TAP AIR PORTUGAL
Nov 13
BIO12:10 pmBilbao
36h 55m
1 stop
SFO4:05 pmSan Francisco
Nov 29
SFO4:35 pmSan Francisco
16h 20m
1 stop
BIO5:55 pmBilbao
$452
Find similar

Iberia flights from Bilbao to San Francisco

Our best Iberia deals on Bilbao to San Francisco flight tickets
Iberia
Nov 13
BIO9:15 amBilbao
20h 19m
2 stops
SFO8:34 pmSan Francisco
Nov 29
SFO7:00 amSan Francisco
16h 30m
2 stops
BIO8:30 amBilbao
$562
Find similar
Iberia
Nov 8
BIO6:45 amBilbao
23h 14m
2 stops
SFO8:59 pmSan Francisco
Nov 15
SFO6:00 amSan Francisco
17h 30m
2 stops
BIO8:30 amBilbao
$580
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Bilbao to San Francisco 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 September 25, 2025.
Use the filters below to find and compare flights from Bilbao to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 11/13

12:10 pm-4:05 pm

1 stop36h 55m

San Francisco

Sat 11/29

4:35 pm-5:55 pm

1 stop16h 20m

$433

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Tue 2/17

6:40 pm-2:30 pm

1 stop28h 50m

San Francisco

Mon 2/23

4:35 pm-5:55 pm

1 stop16h 20m

$439

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 11/13

12:10 pm-4:05 pm

1 stop36h 55m

San Francisco

Sat 11/29

4:35 pm-5:55 pm

1 stop16h 20m

$452

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 1/15

6:45 am-7:01 pm

2 stops21h 16m

San Francisco

Thu 1/22

10:40 am-11:15 pm

2 stops27h 35m

$496

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 2/13

6:45 am-7:00 pm

2 stops21h 15m

San Francisco

Sat 2/21

10:31 am-12:50 pm

2 stops17h 19m

$521

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 1/16

7:30 pm-2:35 pm

1 stop28h 05m

San Francisco

Thu 1/22

4:40 pm-6:40 pm

1 stop17h 00m

$536

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Mon 1/12

12:50 pm-8:10 pm

1 stop16h 20m

San Francisco

Wed 1/21

7:00 am-10:50 am

2 stops18h 50m

$563

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Mon 1/12

6:45 am-11:43 am

2 stops37h 58m

San Francisco

Wed 1/21

7:00 am-10:50 am

2 stops18h 50m

$569

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 1/15

6:50 am-11:50 am

1 stop14h 00m

San Francisco

Wed 1/21

2:00 pm-4:30 pm

2 stops17h 30m

$575

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Tue 2/17

6:50 am-5:48 pm

2 stops19h 58m

San Francisco

Mon 2/23

10:10 am-11:30 am

2 stops16h 20m

$579

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 San Francisco from

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

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 cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $445.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Bilbao to San Francisco is on a Wednesday when prices can be found for as low as $669. The most expensive day to fly to San Francisco is Saturday, with ticket prices averaging around $1,219.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Bilbao to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $809. Flights in the morning are often more expensive with an average ticket price of $931.

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

You are more likely to see cheaper flights to San Francisco from Bilbao when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $627 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Bilbao for as low as $470 on momondo.

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

As of September 2025, prices for Bilbao to San Francisco flights are approximately 29% more expensive when compared to flights at the same time last year.

When to book flights from Bilbao to San Francisco

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

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

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

Direct flights

None
There are no direct flights from Bilbao to San Francisco. There are no popular flight routes from Bilbao to San Francisco.
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  • How far is Bilbao to San Francisco by plane?

    The distance between Bilbao and San Francisco is about 5671.4 mi. Typically, this will take 14h 00m by plane in normal conditions.

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

    Prices for flights from Bilbao Airport to San Francisco Airport are refreshed on a daily basis.

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

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

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

    The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Bilbao to San Francisco

Compare and see reviews for airlines that fly from Bilbao to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $397Free CancellationRating
7.8
1,391 reviews
Search KLM flights
United AirlinesPriceFrom $538Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Calistoga
Bodega Bay
Roseville
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Half Moon Bay
Walnut Creek
Vallejo
Salinas
Redwood City
South San Francisco
Fairfield

Why use momondo?

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

It is quick and easy to find Bilbao to San Francisco 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 San Francisco that suits you.

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

All flight searches from Bilbao to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Bilbao to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Bilbao to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

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