Lisbon, Portugal to Denver, CO flights
Flights starting at $396. Choose between United Airlines, Air Europa, or TAP Portugal to find the best price.

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Tips to know when travelling to Denver
Cheapest one-way trip | $551 |
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Cheapest nonstop round-trip | $1007 |
Cheapest round-trip | $1040 |
Average round-trip | $1185 |
Includes rare itinerary | Travel hack |
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Check-in for a flight from Lisbon to Denver
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
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United Airlines | UAL | UA | Yes | No |
Air Europa | AEA | UX | Yes | 0 0 |
TAP Portugal | TAP | TP | Yes | Opens 36 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
United States COVID-19 travel restrictions

Most travelers from Portugal can enter Denver, DEN, but there are restrictions.
Departure
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Visa requirements |
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Return
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
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