DTW - OPO

Find cheap flights from Detroit to Porto

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Detroit to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Detroit to Porto, as well as popular online travel agencies
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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Detroit and Porto. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $701 (round-trip)
Shortest trip • 10h 15m (one-way)
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Booking Insights
Flight Deals

Cheap Flights from Detroit to Porto (DTW-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Detroit to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Detroit to Porto

Multiple Airlines Logo
DTW
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OPO
3716 mimulti-stop
Multiple Airlines Logo
OPO
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DTW
3716 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Detroit to Porto flights

Get data-powered insights and trends into flights from Detroit to Porto to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Detroit to Porto?

Percentage of 1-stop round-trip flights from Detroit to Porto chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Frankfurt am Main (FRA) is the top choice – 34% of KAYAK users who clicked on 1-stop flights from Detroit to Porto picked an itinerary connecting there.

What is the cheapest layover airport when flying from Detroit to Porto?

Average round-trip price for 1-stop flights from Detroit to Porto clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Istanbul (IST) offer the most affordable fares, with an average round-trip price of $701.

Which layover airport offers the shortest total travel time from Detroit to Porto?

Shortest average total travel time for 1-stop one-way flights from Detroit to Porto via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Newark (EWR) for the shortest journey. The average one-way travel time for flights connecting there is 10h 15m.

Which layover airport has the quickest connection when flying from Detroit to Porto?

Average layover duration at different layover airports for 1-stop one-way flights from Detroit to Porto, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Newark (EWR) often has the shortest layovers from Detroit to Porto, with an average of 1h 47m.

Good to know

Low seasonFebruary
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 3% increase in price.

When to book flights from Detroit to Porto

Are your dates flexible? Find out the best times to travel from Detroit to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Detroit to Porto flights

  • Do I need a passport to fly between Detroit and Porto?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Detroit and on arrival in Porto.

  • Which aircraft models fly most regularly from Detroit to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Detroit to Porto?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Detroit and Porto, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Detroit to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Detroit to Porto are Delta and KLM. With an average price for the route of $865 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $852 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Detroit to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Detroit to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Detroit to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Detroit is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Detroit to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Detroit with another airline. Booking your flights between Detroit and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Detroit to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Detroit up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Detroit to Porto

 
See real verified KAYAK customer reviews for airlines flying from Detroit to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Detroit to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8406 reviews
8.1Boarding
7.9Comfort
7.2Food
7.8Entertainment
8.5Crew
Airline reviews

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

6.0 GoodAnonymous, Apr 2026
DTW - AMS
Read more Delta reviews

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

The tray table was broken and the food was terrible.

The gentleman at the gate I think his name is RIE was exceptional

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

Would have been better if there was a nonstop flight from Tampa to Norfolk or Tampa to New Port News.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

The flight was smooth, the crew was great but the plane was quite old

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Everything you need to know for your flight from Detroit to Porto

Information on your arrival and departure airports