What is the cheapest airline that flies from San Francisco to Bilbao?

Vueling, Iberia, and Aer Lingus are the most popular carriers operating from San Francisco to Bilbao

What airlines fly to Bilbao?

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to Bilbao from San Francisco according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 9 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

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?

As of July 2025, there are 8 operators available to choose from 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.

$320 Cheap Flights from San Francisco to Bilbao in 2025

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Find the cheapest flights from San Francisco to Bilbao

Round-trip

One-way

Last minute

Cheap round-trip flights

4:20 pm - 6:00 pmSFO-BIO

16h 40m1 stop

12:25 pm - 1:35 pmBIO-SFO

34h 10m1 stop

$493TAP AIR PORTUGAL

Find Deal

lun., sep. 15 - lun., sep. 22

4:20 pm - 11:30 amSFO-BIO

34h 10m1 stop

12:25 pm - 1:35 pmBIO-SFO

34h 10m1 stop

$497TAP AIR PORTUGAL

Find Deal

mié., sep. 10 - lun., sep. 29

9:05 pm - 11:25 pmSFO-BIO

17h 20m1 stop

6:45 am - 12:40 pmBIO-SFO

14h 55m1 stop

$557United Airlines

Find Deal

mar., sep. 9 - vie., sep. 19

9:05 pm - 11:25 pmSFO-BIO

17h 20m1 stop

6:45 am - 7:25 amBIO-SFO

33h 40m2 stops

$559United Airlines

Find Deal

mar., sep. 9 - vie., sep. 19

3:05 pm - 10:00 pmSFO-BIO

21h 55m1 stop

7:10 am - 6:15 pmBIO-SFO

20h 05m1 stop

$562KLM

Find Deal

lun., ago. 11 - jue., sep. 11

8:25 pm - 11:15 amSFO-BIO

29h 50m1 stop

11:05 am - 6:15 pmBIO-SFO

16h 10m1 stop

$563Delta

Find Deal

dom., ago. 10 - vie., sep. 12

11:59 pm - 11:00 amSFO-BIO

26h 01m2 stops

11:05 am - 6:15 pmBIO-SFO

16h 10m1 stop

$566Delta

Find Deal

mar., ago. 12 - vie., sep. 12

11:59 pm - 10:45 amSFO-BIO

25h 46m2 stops

12:30 pm - 8:02 pmBIO-SFO

16h 32m1 stop

$577Lufthansa

Find Deal

lun., ago. 4 - mié., ago. 20

9:40 pm - 11:05 pmSFO-BIO

16h 25m1 stop

6:40 am - 12:40 pmBIO-SFO

15h 00m1 stop

$591Lufthansa

Find Deal

mié., nov. 19 - vie., nov. 28

3:05 pm - 10:00 pmSFO-BIO

21h 55m1 stop

7:10 am - 12:50 pmBIO-SFO

14h 40m1 stop

$607KLM

Find Deal

lun., ago. 11 - jue., ago. 21

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

Sep 15

SFO4:20 pmSan Francisco

16h 40m

1 stop

BIO6:00 pmBilbao

Sep 22

BIO12:25 pmBilbao

34h 10m

1 stop

SFO1:35 pmSan Francisco

$493

Find similar

TAP AIR PORTUGAL

Sep 10

SFO4:20 pmSan Francisco

34h 10m

1 stop

BIO11:30 amBilbao

Sep 29

BIO12:25 pmBilbao

34h 10m

1 stop

SFO1:35 pmSan Francisco

$497

Find similar

TAP AIR PORTUGAL

Sep 9

SFO6:45 pmSan Francisco

31h 45m

2 stops

BIO11:30 amBilbao

Sep 29

BIO12:25 pmBilbao

34h 10m

1 stop

SFO1:35 pmSan Francisco

$517

Find similar

Vueling flights from San Francisco to Bilbao

Our best Vueling deals on San Francisco to Bilbao flight tickets

Vueling

Jul 27

SFO8:10 pmSan Francisco

27h 05m

1 stop

BIO8:15 amBilbao

Sep 11

BIO7:00 amBilbao

20h 10m

1 stop

SFO6:10 pmSan Francisco

$503

Find similar

Vueling

Jul 20

SFO8:10 pmSan Francisco

27h 05m

1 stop

BIO8:15 amBilbao

Aug 13

BIO2:25 pmBilbao

36h 00m

1 stop

SFO5:25 pmSan Francisco

$874

Find similar

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

Prices

Airlines

What is the cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from San Francisco is in September. Flight prices, which tend to average around $674, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in September, then March is your next best option. Flight prices from San Francisco to Bilbao during March average around $714.

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from San Francisco to Bilbao is on a Sunday. Travelers who choose to depart for Bilbao on a Sunday will often find tickets for as low as $869. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,286. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

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

Our most recent data shows that the best time of day to fly to Bilbao is in the evening. Flights from San Francisco to Bilbao during this time can be as low as $958. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,217 per ticket.

How far in advance should I book a flight 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 $890 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 $751 on momondo.

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

Best Price Found	$320
Fastest flight time	14h 10m
Direct flights	None
Airports in Bilbao	1 airport

The best one-way flight to Bilbao from San Francisco in the past 72 hours is $320. The best round-trip flight deal from San Francisco to Bilbao found on momondo in the last 72 hours is $493.

The fastest flight from San Francisco to Bilbao takes 14h 10m

There are no direct flights from San Francisco to Bilbao. Popular non-direct route for this connection is San Francisco Airport - Bilbao Airport.

There is 1 airport near Bilbao: Bilbao (BIO)

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How far is San Francisco to Bilbao by plane?
There are 5671.4 mi between San Francisco and Bilbao. Flights usually cover this in 14h 10m, 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?
As of July 2025, there are 8 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from San Francisco to Bilbao is United Airlines, representing 47% of all bookings. The subsequent popular airlines are Lufthansa at 21%, Delta at 10%, and KLM at 9%.

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
LEVEL	PriceFrom $427	Free Cancellation	Rating 4.0 4 reviews	Search LEVEL flights
Lufthansa	PriceFrom $557	Free Cancellation	Rating 6.8 7,208 reviews	Search Lufthansa flights
SWISS	PriceFrom $597	Free Cancellation	Rating 7.5 1,657 reviews	Search SWISS flights
Air France	PriceFrom $599	Free Cancellation	Rating 7.5 1,466 reviews	Search Air France flights
United Airlines	PriceFrom $615	Free Cancellation	Rating 7.4 8,858 reviews	Search United Airlines flights
KLM	PriceFrom $619	Free Cancellation	Rating 7.8 1,372 reviews	Search KLM flights
Delta	PriceFrom $629	Free Cancellation	Rating 8.0 7,956 reviews	Search Delta flights
Iberia	PriceFrom $739	Free Cancellation	Rating 7.0 2,835 reviews	Search Iberia flights

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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.