$551 Cheap Flights from Porto (OPO) to Denver (DEN)

Popular airlines from Porto Airport (OPO) to Denver Intl. Airport (DEN)

Cheap Flights from Porto to Denver (OPO-DEN)

Prices were available within the past 7 days and start at $551 for one-way flights and $876 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Lufthansa
Lufthansa
British Airways
Lufthansa
Lufthansa
Air Canada
Delta
Swiss International Air Lines
Delta

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Frequently asked questions

How much does a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN) cost?
Secure a cheap one-way flight from $551 or cheap return flight from $876 from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN)?
December is the most affordable month to fly from OPO to DEN. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest OPO to DEN flight.
How many flights per day from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN)?
Nonstop flights from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OPO to DEN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN)?
Opt for a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from OPO to DEN are generally more expensive. To lock in the best prices, start searching for flights well ahead of time. That being said, if you're flexible with your travel dates, you may find a cheap fare right before your journey.
Is it cheaper to book an OPO to DEN flight and hotel package?
Compared with arranging flights and hotels separately, booking an OPO to DEN flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the stress out of travel planning. Just secure your flights and select from our wide range of stays, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Denver Intl. Airport (DEN)?
If you reserved your OPO to DEN flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Dr. Francisco de Sa Carneiro
Destination airport
Denver Intl.
Airlines serving
Air Canada, Air Europa, American Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$876
Distance
4751 mi

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