IAH - OPO

$335 Find Cheap Flights from Houston to Porto - Compare and Save

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Everything you should know

Cheapest round-trip
$566
Typical prices: $703-$1,256
United Airlines
Thu 11/8Sat 11/24
IAH - OPO • 1 stop
Cheapest one-way
$351
Typical prices: $398-$742
Multiple Airlines
Wed 10/17
IAH - OPO • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Houston George Bush Intcntl Airport and Porto. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 22% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Paris Charles de Gaulle (CDG)
Cheapest • Avg $484 (round-trip)
Newark (EWR)
Shortest trip • 13h 53m (one-way)
Insights
Insights
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We hope you love your trip to Porto!
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Flight Deals

Cheap Flights from Houston to Porto (IAH-OPO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to Porto

Sun, Nov 8 - Tue, Nov 24
United Airlines Logo
7:30 am - 9:30 amIAH  Houston George Bush Intcntl-OPO Porto
20h 00m1 stop Newark
United Airlines Logo
12:35 pm - 9:50 amOPO  Porto-IAH Houston George Bush Intcntl
27h 15m2 stops Newark Chicago O'Hare Intl
$566United Airlines
Sun, Nov 8 - Tue, Nov 24
United Airlines Logo
7:30 am - 9:30 amIAH  Houston George Bush Intcntl-OPO Porto
20h 00m1 stop Newark
United Airlines Logo
12:35 pm - 1:28 pmOPO  Porto-IAH Houston George Bush Intcntl
30h 53m1 stop Newark
$566United Airlines
Sun, Nov 8 - Tue, Nov 24
United Airlines Logo
6:00 am - 9:30 amIAH  Houston George Bush Intcntl-OPO Porto
21h 30m1 stop Newark
United Airlines Logo
12:35 pm - 12:07 pmOPO  Porto-IAH Houston George Bush Intcntl
29h 32m1 stop Newark
$566United Airlines
Mon, Mar 8 - Mon, Mar 15
Iberia Logo
9:40 pm - 8:00 pmIAH  Houston George Bush Intcntl-OPO Porto
16h 20m2 stops London Heathrow Madrid Barajas
Iberia Logo
12:25 pm - 11:22 amOPO  Porto-IAH Houston George Bush Intcntl
27h 57m2 stops Madrid Barajas Dallas/Fort Worth
$567Iberia
Mon, Mar 8 - Mon, Mar 15
Multiple Airlines Logo
3:50 pm - 5:35 pmIAH  Houston George Bush Intcntl-OPO Porto
19h 45m1 stop London Heathrow
Multiple Airlines Logo
8:40 pm - 5:59 pmOPO  Porto-IAH Houston George Bush Intcntl
26h 19m2 stops Madrid Barajas Dallas/Fort Worth
$569Multiple Airlines
Sun, Nov 8 - Tue, Nov 24
British Airways Logo
4:14 pm - 4:45 pmIAH  Houston George Bush Intcntl-OPO Porto
18h 31m2 stops Dallas/Fort Worth London Heathrow
British Airways Logo
8:20 am - 12:09 amOPO  Porto-IAH Houston George Bush Intcntl
21h 49m2 stops Madrid Barajas Chicago O'Hare Intl
$571British Airways
Tue, Nov 17 - Thu, Dec 3
United Airlines Logo
9:44 am - 9:30 amIAH  Houston George Bush Intcntl-OPO Porto
17h 46m1 stop Newark
United Airlines Logo
12:35 pm - 8:23 pmOPO  Porto-IAH Houston George Bush Intcntl
13h 48m1 stop Newark
$576United Airlines
Wed, Oct 28 - Thu, Nov 5
KLM Logo
8:10 pm - 10:00 pmIAH  Houston George Bush Intcntl-OPO Porto
20h 50m1 stop Paris Charles de Gaulle
KLM Logo
5:55 am - 4:50 pmOPO  Porto-IAH Houston George Bush Intcntl
16h 55m1 stop Paris Charles de Gaulle
$595KLM
Wed, Feb 10 - Wed, Feb 17
KLM Logo
7:10 pm - 10:00 pmIAH  Houston George Bush Intcntl-OPO Porto
20h 50m1 stop Paris Charles de Gaulle
KLM Logo
5:55 am - 9:10 pmOPO  Porto-IAH Houston George Bush Intcntl
21h 15m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
$604KLM
Wed, Nov 4 - Sun, Nov 8
KLM Logo
9:42 am - 8:15 amIAH  Houston George Bush Intcntl-OPO Porto
16h 33m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
KLM Logo
5:00 am - 1:10 pmOPO  Porto-IAH Houston George Bush Intcntl
14h 10m1 stop Amsterdam Schiphol
$635KLM
Booking Insights

Price, demand and travel trends for Houston George Bush Intcntl Airport to Porto flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Houston George Bush Intcntl Airport to Porto with more confidence.

How much is a round-trip flight from Houston George Bush Intcntl Airport to Porto?

Round-trip flights from Houston George Bush Intcntl Airport to Porto start at $566. Prices are below average for this route right now, with typical round-trip fares ranging from $703 to $1,256. The lowest price found in the past 5 days was $566 on United Airlines.

What's the cheapest day of the week to fly from Houston George Bush Intcntl Airport to Porto?

Wednesday is the cheapest day of the week to fly from Houston George Bush Intcntl Airport to Porto, it is 21% cheaper than the average day. Saturday is the most expensive day with flight prices 53% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to Porto?

  • January is the cheapest month to fly from Houston George Bush Intcntl Airport to Porto at $682 round-trip.
  • December ($1,942) and July ($1,337) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 184% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Houston George Bush Intcntl Airport to Porto flights

Low season

January

Cheapest flight

$351
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Houston George Bush Intcntl Airport to Porto

When to book flights from Houston to Porto

Are your dates flexible? Find out the best times to travel from Houston to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Houston George Bush Intcntl Airport to Porto flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Houston George Bush Intcntl Airport to Porto?

    Flights from Houston George Bush Intcntl Airport to Porto usually depart from Houston George Bush Intcntl (IAH) and arrive at Porto (OPO).

  • What cabin classes can I book on flights from Houston George Bush Intcntl Airport to Porto?

    Three cabin classes are available on flights from Houston George Bush Intcntl Airport to Porto:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Houston George Bush Intcntl Airport to Porto pass through?

    One-stop flights from Houston George Bush Intcntl Airport to Porto most commonly connect through:

    • Newark (EWR) - 39% of one-stop connections
    • Amsterdam Schiphol (AMS) - 30% of one-stop connections
    • Istanbul (IST) - 16% of one-stop connections
    • Frankfurt am Main (FRA) - 9% of one-stop connections

    Newark (EWR) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Houston George Bush Intcntl Airport to Porto?

    Yes. Being flexible with your travel dates can save you up to 48% on the Houston George Bush Intcntl Airport to Porto route. Wednesday is the cheapest departure day at $700 round-trip on average, while Saturday is the most expensive at $1,342, a difference of $642. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Porto?

    Some of the most popular sights in Porto are Ribeira, Ribeira Square and Mercado do Bolhão. These are among the most viewed places in Porto on KAYAK.

  • How long is a flight from Houston George Bush Intcntl Airport to Porto?

    A nonstop flight from Houston George Bush Intcntl Airport to Porto takes 0h 00m, covering 4,726 miles.

  • Do I need a passport to fly from Houston George Bush Intcntl Airport to Porto?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Houston George Bush Intcntl Airport to Porto looking right now?

    One-way fares from Houston George Bush Intcntl Airport to Porto are currently lower than usual. Average one-way flight prices are about $494, which is 19% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Houston George Bush Intcntl Airport to Porto?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 13h 53m, compared with 14h 40m via Montreal Pierre Elliott Trudeau Intl (YUL) and 14h 46m via Amsterdam Schiphol (AMS).

  • What is the time difference between Houston George Bush Intcntl Airport and Porto?

    Porto is 6 hours ahead of Houston George Bush Intcntl Airport (Western European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Porto Airport (OPO)?

    Porto Airport (OPO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:
    • Klass Wagen
    • Drive on Holiday
    • GREEN MOTION
    • Goldcar Rental SP
    • SURPRICE CAR RENTAL

  • How much should I expect to pay for a Houston George Bush Intcntl Airport to Porto flight?

    Round-trip flights from Houston George Bush Intcntl Airport to Porto range from $703 to $1,256, with an average of $876 over the past 12 months. Anything below $703 counts as a good deal.

Your guide to booking Houston George Bush Intcntl Airport to Porto flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Saturday. On this route, Wednesday flights average $700 - about $642 less than Saturday (48% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Houston George Bush Intcntl Airport to Porto trip for January. Fares historically average $682 round-trip in that month - typically $1,260 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.
    - Opo Hotel Porto Aeroporto

More options for your flight from Houston to Porto

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