Seattle-Tacoma to Lisbon
5202 miles great-circle distance, typically flown in 10h 52m with 8 airlines operating direct service from Seattle-Tacoma (SEA) to Lisbon (LIS). Cheapest fares are usually in January (around $699 return), with peak prices in August (around $2097). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Seattle-Tacoma
Seattle-Tacoma is Alaska Airlines' principal hub and Delta's growing Pacific Northwest base. The Link Light Rail Red Line runs from the airport's elevated station directly to Westlake in downtown Seattle in 38 minutes for $3.25 — possibly the easiest big-city transfer in the country. International long-haul has expanded sharply post-2023 with new direct service to Tokyo, Seoul, Frankfurt, London Heathrow and Auckland. Weather delays are rare; SEA is one of the most operationally reliable winter airports in the US.
Arriving in Lisbon
Lisbon Humberto Delgado is on the city's northeastern edge, 7 km from the centre. The Aeroporto metro station connects to the city in 25 minutes for €1.80. TAP Portugal dominates the US-Lisbon corridor with capacity from JFK, EWR, MIA, BOS, IAD, ORD and SFO; United adds capacity from EWR and IAD. Lisbon's mild winters make October–April excellent value travel; summer fares (July–August) double off-peak prices.
Who flies SEA to LIS?
| Airline | IATA | Flight time | Cabin |
| Alaska Airlines | AS | 10h 52m | Economy |
| Delta Air Lines | DL | 10h 52m | Economy |
| British Airways | BA | 10h 52m | Economy |
| Lufthansa | LH | 10h 52m | Economy |
| Korean Air | KE | 10h 52m | Economy |
| ANA | NH | 10h 52m | Economy |
| Japan Airlines | JL | 10h 52m | Economy |
| Emirates | EK | 10h 52m | Economy |
8 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly SEA→LIS
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Seattle to Lisbon FAQs
Direct flights from Seattle-Tacoma (SEA) to Lisbon (LIS) take approximately 10h 52m for the 5202-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
January is typically the cheapest month on this route, with one-way fares from $699. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
8 carriers operate direct service from Seattle-Tacoma (SEA) to Lisbon (LIS): Alaska Airlines, Delta Air Lines, British Airways, Lufthansa, Korean Air and 3 more. Frequencies vary by season and carrier — Alaska Airlines typically operates the highest weekly count on this corridor.
Visa-free Schengen for US passport holders up to 90 days in any 180-day period. Always check travel.state.gov for the latest entry requirements before booking.
Lisbon (LIS) is the primary international airport for Lisbon. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.