Houston to Porto (IAH–OPO) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
While no nonstop service exists between IAH and OPO, 1-stop connecting options are available.
Connection Landscape
On-Time Performance
Other ways to reach Porto from Houston
| Metric | IAH→OPO | AUS→OPO |
|---|---|---|
| Distance from IAH | – | 140 mi |
| Nonstop airlines | – | 1 |
| Weekly flights | – | – |
| Flight time | 7h 10m | 6h 36m |
| Departure OTP | 17% | – |
Travel Essentials
IAH: CDT · OPO: WEST
When it's 6:00 PM in Houston, it's 12:00 AM (next day) in Porto.
US passport holders enter Portugal visa-free for up to 90 days within any 180-day period across the entire Schengen area. No advance application is needed. Portugal is an EU member and Schengen member. Passport must be valid for at least 3 months beyond the planned departure from the Schengen area. At Lisbon Humberto Delgado Airport (LIS), Porto Francisco Sa Carneiro (OPO), or Faro (FAO), immigration stamps your passport at the non-EU line.
The 90-day Schengen clock runs across all 29 Schengen countries. Days spent in Spain, France, or any other Schengen state count toward the same 90-day limit. Portugal's train network connects Lisbon to Porto in 2 hours 40 minutes on the Alfa Pendular for EUR 25 to EUR 35 ($27 to $38). Lisbon to Faro (Algarve) takes 2 hours 50 minutes. The Madeira and Azores archipelagos are autonomous regions of Portugal: both are in the Schengen area, so no separate visa is needed. TAP Air Portugal connects Lisbon to Funchal (Madeira, 1 hour 35 minutes) and Ponta Delgada (Azores, 2 hours 15 minutes).
Direct flights from New York JFK and Newark to Lisbon run about 7 hours on TAP, United, and Portuguese carriers. Boston to LIS runs about 6 hours 30 minutes. Direct service also operates from Miami, Washington Dulles, Chicago, San Francisco, and Los Angeles. TAP offers free Lisbon stopovers on transatlantic flights. Portugal uses the euro, trading at roughly $1.08 per EUR 1. Card payments and contactless tap work at most businesses. Lisbon's metro has 4 lines with single tickets at EUR 1.65 ($1.78). The Viva Viagem card works on metro, buses, trams, and ferries. Tram 28 climbs through Alfama for the standard EUR 3.80 cash fare or EUR 1.65 with the Viva Viagem card. A restaurant meal with wine runs EUR 12 to EUR 25 ($13 to $27). Pasteis de nata (custard tarts) cost EUR 1.20 to EUR 1.50 at most pastelarias.
IAH has no direct rail link to downtown Houston. The IAH Express bus runs from Houston Amtrak/Greyhound station via Park & Ride to Terminal C (60–90 min, $1.25 with METRO Q card). This is the only transit option; Houston's rail network does not reach the airport.Taxis from downtown Houston cost $50–70 and take 40–60 minutes. Ride-hails (Uber, Lyft) are typically $35–55. IAH sits 23 miles north of downtown on the North Freeway (I-45); traffic is heavy during morning and evening rush. Remote economy parking lots serve all terminals via shuttle.
IAH–OPO Quick Facts
Frequently Asked Questions
Flights from IAH to OPO
George Bush Intercontinental Airport (IAH) and Francisco de Sá Carneiro Airport (OPO) are connected through multiple connecting hub airports.
IAH to OPO Flight Duration and Schedule
Nonstop flight time from IAH to OPO is about 7 hours 10 minutes gate to gate. The route covers a distance of 4,729 miles (7,610 km).
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via John F. Kennedy, Toronto Pearson and Newark Liberty. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Austin (AUS).