United Airlines operates connecting flights from San Francisco to Lisbon, requiring a layover before reaching Portugal. Comparing different travel dates and stopover times helps you find the most suitable economy fare among the live options shown above.
From 10 real fares found in our latest check. Prices are per person and can change.
10 real fares from our latest check, cheapest first. Prices are per person and can change until ticketed.
UA
1 stop · 17h 55m · Fri, Nov 6
UA
1 stop · 25h 55m · Fri, Nov 6
UA
1 stop · 17h 55m · Fri, Nov 6
UA
1 stop · 17h 55m · Fri, Nov 6
UA
1 stop · 17h 55m · Fri, Nov 6
Lowest fare we found for each month we checked. Based on real searches, not a forecast.
Cheapest month found: Jan 2027 from $643
United Airlines offers flights on the route from San Francisco to Lisbon. Our current data shows that these flights require 1 stop. Total travel time varies depending on the layover, with some flight durations lasting 17 hours 55 minutes, while other itineraries extend to 25 hours 55 minutes. Checking different flight combinations will show you how these connections impact the total journey length.
Pricing trends for this route often shift during the winter months. Recent data shows fares dipping to their lowest point in January before slightly increasing as February approaches. Because prices change frequently, comparing different travel dates across December, January, and February can reveal better options. Review the live fares above to track current trends for your specific dates.
Flexibility with your departure dates is a practical way to find better pricing for flights to Lisbon. Shifting your travel by a few days can expose different fare tiers. Since this route relies on connecting flights, adjusting your preferred layover duration might also impact the price. Keep an eye on the booking window and compare the live pricing above well in advance of your intended travel date.
Current route data shows no nonstop flights from San Francisco to Lisbon. Instead, you will find 1 stop itineraries. Adding a connection means your total journey will take 17 hours 55 minutes on some schedules, while other flights take 25 hours 55 minutes. Selecting a flight with a longer layover might yield a different ticket price, so comparing the total travel time against the live fare can help you decide.
ASAirspace provides a live search tool to compare available economy flights to Portugal. We charge no booking fees when you secure your ticket. If you need help evaluating the different layovers or understanding the live fares, our advisors are available over the phone to assist you with the booking process.
United Airlines offers connecting flights from San Francisco to Lisbon. Check the live fares shown above for their current pricing and schedules.
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