Porto (OPO) → Denver (DEN)
About Porto to Denver Flights
Discover the best flights from Porto to Denver, covering 7,646 km in approximately 10h 3m. Porto (OPO) to Denver (DEN) is one of the major long-haul routes connecting Portugal and United States. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Porto to Denver.
12-Month Price History
Flight prices from Porto to Denver vary significantly throughout the year. February typically offers the best deals with average prices around $1250, while July sees the highest prices, averaging $2079. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
92 days
For best prices
Booking Tips
For the best prices on Porto to Denver flights, we recommend booking 150 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
Frontier Airlines F9 | $1810 | - | - |
Southwest Airlines WN | $1980 | - | - |
Portugália Airlines NI | $2390 | $9920 | $14740 |
United Airlines UA | $2550 | $8730 | $15020 |
TAP Air Portugal TP | $2670 | $8700 | $16520 |
SkyWest Airlines OO | $2910 | $9600 | $12760 |
American Airlines AA | $3010 | $7930 | $13680 |
Frontier Airlines
F9
Economy
$1810
Business
-
First
-
Southwest Airlines
WN
Economy
$1980
Business
-
First
-
Portugália Airlines
NI
Economy
$2390
Business
$9920
First
$14740
United Airlines
UA
Economy
$2550
Business
$8730
First
$15020
TAP Air Portugal
TP
Economy
$2670
Business
$8700
First
$16520
SkyWest Airlines
OO
Economy
$2910
Business
$9600
First
$12760
American Airlines
AA
Economy
$3010
Business
$7930
First
$13680
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Don't Forget Travel Insurance!
Found your flight? Protect your trip with SafetyWing's comprehensive travel insurance. Perfect for trips to Denver, United States.
- Medical coverage up to $250,000
- Trip interruption & delays covered
- Lost luggage protection included
From just $45/month • Works in 180+ countries • COVID-19 coverage included
Trusted by 100,000+ travelers
Frequently Asked Questions
How long is the flight from Porto to Denver?
The flight time from Porto (OPO) to Denver (DEN) is approximately 10 hours and 3 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Porto and Denver?
The aerial distance between Porto and Denver is 7,646 kilometers (4,751 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Porto to Denver?
Several airlines operate flights between Porto and Denver, including United Airlines, Southwest Airlines, Frontier Airlines and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Porto to Denver?
Based on historical data, February typically offers the lowest airfares for flights from Porto to Denver. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Denver?
For the best prices on Porto to Denver flights, we recommend booking 170 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Porto to Denver?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of Portugal traveling to United States should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Porto and Denver?
Porto operates on Europe/Lisbon time zone, while Denver is in the America/Denver time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.