What is the cheapest airline that flies from Portland to Bilbao?

United Airlines and KLM are the most popular carriers operating from Portland to Bilbao

When did momondo last update prices for flights from Portland Airport to Bilbao Airport?

Prices for flights from Portland Airport to Bilbao Airport are updated daily.

How many operators does momondo search for flights from Portland Airport to Bilbao Airport?

The number of operators available for flights from Portland Airport to Bilbao Airport is 2 as of December 2025.

How old do you have to be to fly from Portland Airport to Bilbao Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Bilbao Airport.

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

The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$319 Cheap Flights from Portland to Bilbao in 2025/26

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Find the cheapest flights from Portland to Bilbao

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:50 pm - 11:20 pm

PDX

BIO

22h 30m2 stops

11:35 am - 6:56 pm

BIO

PDX

40h 21m2 stops

$488United Airlines

Fri, Jan 30 - Tue, Feb 3

3:45 pm - 9:55 pm

PDX

BIO

22h 10m2 stops

7:25 am - 11:00 pm

BIO

PDX

23h 35m2 stops

$588United Airlines

Wed, Mar 18 - Wed, Mar 25

1:00 pm - 11:20 pm

PDX

BIO

26h 20m3 stops

7:25 am - 9:10 pm

BIO

PDX

21h 45m2 stops

$795United Airlines

Wed, Mar 18 - Wed, Mar 25

3:27 pm - 11:25 pm

PDX

BIO

22h 58m2 stops

6:45 am - 8:45 pm

BIO

PDX

23h 00m2 stops

$887Lufthansa

Tue, May 19 - Tue, May 26

1:35 pm - 11:20 pm

PDX

BIO

24h 45m2 stops

11:35 am - 6:10 pm

BIO

PDX

63h 35m3 stops

$900United Airlines

Fri, Jan 30 - Tue, Feb 3

7:45 pm - 5:50 pm

PDX

BIO

37h 05m2 stops

9:00 pm - 7:05 pm

BIO

PDX

31h 05m2 stops

$933Multiple Airlines

Tue, May 19 - Tue, May 26

7:30 pm - 5:30 pm

PDX

BIO

37h 00m2 stops

6:10 pm - 5:40 pm

BIO

PDX

32h 30m2 stops

$970Aer Lingus

Sun, May 24 - Sat, May 30

7:00 am - 11:30 am

PDX

BIO

20h 30m2 stops

6:50 am - 12:25 pm

BIO

PDX

13h 35m1 stop

$1,004Delta

Wed, Mar 18 - Wed, Mar 25

7:45 pm - 5:10 pm

PDX

BIO

36h 25m2 stops

7:15 am - 7:05 pm

BIO

PDX

20h 50m3 stops

$1,016Multiple Airlines

Tue, May 19 - Tue, May 26

7:30 pm - 5:30 pm

PDX

BIO

37h 00m2 stops

6:10 pm - 5:40 pm

BIO

PDX

32h 30m2 stops

$1,057Aer Lingus

Sun, May 24 - Sat, May 30

United Airlines flights from Portland to Bilbao

Our best United Airlines deals on Portland to Bilbao flight tickets

United Airlines

Jan 30

PDX3:50 pmPortland

22h 30m

2 stops

BIO11:20 pmBilbao

Feb 3

BIO11:35 amBilbao

40h 21m

2 stops

PDX6:56 pmPortland

$488

Find similar

United Airlines

Mar 18

PDX3:45 pmPortland

22h 10m

2 stops

BIO9:55 pmBilbao

Mar 25

BIO7:25 amBilbao

23h 35m

2 stops

PDX11:00 pmPortland

$588

Find similar

United Airlines

Mar 18

PDX1:00 pmPortland

26h 20m

3 stops

BIO11:20 pmBilbao

Mar 25

BIO7:25 amBilbao

21h 45m

2 stops

PDX9:10 pmPortland

$795

Find similar

Aer Lingus flights from Portland to Bilbao

Our best Aer Lingus deals on Portland to Bilbao flight tickets

Aer Lingus

May 24

PDX7:30 pmPortland

37h 00m

2 stops

BIO5:30 pmBilbao

May 30

BIO6:10 pmBilbao

32h 30m

2 stops

PDX5:40 pmPortland

$970

Find similar

Aer Lingus

May 24

PDX7:30 pmPortland

37h 00m

2 stops

BIO5:30 pmBilbao

May 30

BIO6:10 pmBilbao

32h 30m

2 stops

PDX5:40 pmPortland

$1,057

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Fri 1/30

3:50 pm-11:20 pm

2 stops22h 30m

Bilbao

Tue 2/3

11:35 am-6:56 pm

2 stops40h 21m

$488

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 3/18

3:45 pm-9:55 pm

2 stops22h 10m

Bilbao

Wed 3/25

7:25 am-11:00 pm

2 stops23h 35m

$588

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 3/18

1:00 pm-11:20 pm

3 stops26h 20m

Bilbao

Wed 3/25

7:25 am-9:10 pm

2 stops21h 45m

$795

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

3:27 pm-11:25 pm

2 stops22h 58m

Bilbao

Tue 5/26

6:45 am-8:45 pm

2 stops23h 00m

$887

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Fri 1/30

1:35 pm-11:20 pm

2 stops24h 45m

Bilbao

Tue 2/3

11:35 am-6:10 pm

3 stops63h 35m

$900

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

7:45 pm-5:50 pm

2 stops37h 05m

Bilbao

Tue 5/26

9:00 pm-7:05 pm

2 stops31h 05m

$933

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 5/24

7:30 pm-5:30 pm

2 stops37h 00m

Bilbao

Sat 5/30

6:10 pm-5:40 pm

2 stops32h 30m

$970

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Wed 3/18

7:00 am-11:30 am

2 stops20h 30m

Bilbao

Wed 3/25

6:50 am-12:25 pm

1 stop13h 35m

$1,004

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Tue 5/19

7:45 pm-5:10 pm

2 stops36h 25m

Bilbao

Tue 5/26

7:15 am-7:05 pm

3 stops20h 50m

$1,016

PortlandBilbao

PDX - BIO

PDXBIO

Portland

Sun 5/24

7:30 pm-5:30 pm

2 stops37h 00m

Bilbao

Sat 5/30

6:10 pm-5:40 pm

2 stops32h 30m

$1,057

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland 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 day to depart on your flight to Bilbao?

The cheapest day to depart from Portland to Bilbao is on a Tuesday. Travelers who choose to depart for Bilbao on a Tuesday will often find tickets for as low as $952. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,705. 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 afternoon. Flights from Portland to Bilbao during this time can be as low as $1,226. At noon is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,254 per ticket.

When to book flights from Portland to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Bilbao according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Bilbao (PDX to BIO) flight deals and tips

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

Fastest flight time	23h 00m
Direct flights	None

The fastest flight from Portland to Bilbao takes 23h 00m

There are no direct flights from Portland to Bilbao. There are no popular flight routes from Portland to Bilbao.

Search flight deals

How far is Portland to Bilbao by plane?
There are 5272.0 mi between Portland and Bilbao. In terms of flight time, this usually takes a little over 23h 00m.
When did momondo last update prices for flights from Portland Airport to Bilbao Airport?
Prices for flights from Portland Airport to Bilbao Airport are updated daily.
How many operators does momondo search for flights from Portland Airport to Bilbao Airport?
The number of operators available for flights from Portland Airport to Bilbao Airport is 2 as of December 2025.
How old do you have to be to fly from Portland Airport to Bilbao Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Bilbao Airport.
What documentation or ID do you need to fly to Bilbao Airport?
The travel and health documents you'll need for your trip to Bilbao Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bilbao Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Bilbao?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Bilbao is Delta (52% of total bookings). The next most popular airline is KLM (48%).

Best airlines flying from Portland to Bilbao

Compare and see reviews for airlines that fly from Portland to Bilbao with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $476	Free Cancellation	Rating 7.7 1,432 reviews		Search KLM flights
Delta	PriceFrom $633	Free Cancellation	Rating 7.9 8,008 reviews		Search Delta flights

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Why use momondo?

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

It is quick and easy to find Portland 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 Portland to Bilbao with flexible booking policies on momondo?

Yes. All flights to Bilbao from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to Bilbao?

momondo helps you find the best flight between Portland and Bilbao by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Bilbao, momondo offers a useful price alert feature which will track prices for flights to Bilbao from Portland and alert you when they change.