$491+ Cheap flights from San Antonio (SAT) to Bilbao (BIO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — BIO
Jan 7 — Jan 141
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Antonio to Bilbao
Best flights from San Antonio to BilbaoDiscover carefully curated flight deals from San Antonio to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.
Discover carefully curated flight deals from San Antonio to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.
This KLM deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/176:17 pmSAT - BIO
2 stops21h 08mKLM
Sun 1/257:25 amBIO - SAT
2 stops23h 18mKLM
Deal found 12/7![KLM logo]()
$491
This United Airlines deal was found by Cheapflights users on 12/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:00 amSAT - BIO
2 stops33h 20mUnited Airlines
Tue 2/311:35 amBIO - SAT
2 stops18h 38mUnited Airlines
Deal found 12/6![United Airlines logo]()
$787
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/172:05 pmSAT - BIO
2 stops38h 55mUnited Airlines
Sun 1/256:45 amBIO - SAT
2 stops21h 11mUnited Airlines
Deal found 12/7![United Airlines logo]()
$804
Find flight deals from San Antonio to Bilbao
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 8, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $485 (KLM) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio 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, Cheapflights users made 2,558,603 searches. Data last updated December 8, 2025.
Use the filters below to find and compare flights from San Antonio to Bilbao that are best for you.
Fly from
San Antonio
Fly to
Bilbao
Route
Depart
Return
Price
San AntonioBilbao
SAT - BIO
SATBIO
San Antonio
Sat 1/17
6:17 pm-10:25 pm
2 stops21h 08m
Bilbao
Sun 1/25
7:25 am-11:43 pm
2 stops23h 18m
$491
San AntonioBilbao
SAT - BIO
SATBIO
San Antonio
Fri 1/30
7:00 am-11:20 pm
2 stops33h 20m
Bilbao
Tue 2/3
11:35 am-11:13 pm
2 stops18h 38m
$787
San AntonioBilbao
SAT - BIO
SATBIO
San Antonio
Sat 1/17
2:05 pm-12:00 pm
2 stops38h 55m
Bilbao
Sun 1/25
6:45 am-8:56 pm
2 stops21h 11m
$804
- Most accurate provider: When it comes to deals on San Antonio-Bilbao flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Antonio-Bilbao flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Antonio-Bilbao flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-Bilbao flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Antonio to Bilbao
Have a flexible travel schedule? Discover the best time to fly to Bilbao from San Antonio with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Antonio to Bilbao
What is the cheapest month to book a flight from San Antonio to Bilbao?
Currently, January is the cheapest month in which you can book a flight from San Antonio to Bilbao (average of $489). Flying from San Antonio to Bilbao in June is currently the most expensive (average of $1,104). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SAT to BIO?
Find hourly flight availability from San Antonio to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.
It’s optimal to fly from San Antonio to Bilbao at noon. By choosing this option you can save up to 42% on the cost of your flight, compared to a flight in the evening.