Denver International to Lisbon
4829 miles great-circle distance, typically flown in 10h 07m with 4 airlines operating direct service from Denver International (DEN) to Lisbon (LIS). Cheapest fares are usually in January (around $449 return), with peak prices in August (around $1347). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Denver International
Denver International sits 25 miles northeast of downtown Denver — a deliberately remote site that allows for six runways and almost unlimited expansion. The A Line commuter train runs every 15 minutes from the airport directly to Union Station downtown in 37 minutes for $10.50. United dominates the schedule with its largest non-Newark hub; Southwest and Frontier add heavy domestic capacity. Snow disruption is common between November and March, but the airport's ground-stop policy is faster than ORD's.
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 DEN to LIS?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 10h 07m | Economy |
| British Airways | BA | 10h 07m | Economy |
| Lufthansa | LH | 10h 07m | Economy |
| Icelandair | FI | 10h 07m | Economy |
4 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly DEN→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.
Denver to Lisbon FAQs
Direct flights from Denver International (DEN) to Lisbon (LIS) take approximately 10h 07m for the 4829-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 $449. 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.
4 carriers operate direct service from Denver International (DEN) to Lisbon (LIS): United Airlines, British Airways, Lufthansa and Icelandair. Frequencies vary by season and carrier — United 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.