CLE - OPO

$408 Find Cheap Flights from Cleveland to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Cleveland to Porto departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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 Cleveland 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 Cleveland to Porto, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Cleveland to Porto (CLE-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Cleveland 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 Cleveland to Porto

Sun, Oct 5 - Wed, Oct 22
Multiple Airlines Logo
6:00 am - 10:35 amCLE-OPO
23h 35m1 stop
Multiple Airlines Logo
10:00 pm - 2:57 pmOPO-CLE
45h 57m2 stops
$591Multiple Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 22
Multiple Airlines Logo
6:00 am - 10:55 amCLE-OPO
23h 55m1 stop
Multiple Airlines Logo
10:00 pm - 2:57 pmOPO-CLE
45h 57m2 stops
$603Multiple Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
7:55 pm - 3:25 pmCLE-OPO
14h 30m2 stops
United Airlines Logo
12:30 pm - 5:39 pmOPO-CLE
34h 09m2 stops
$633United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
7:55 pm - 3:25 pmCLE-OPO
14h 30m2 stops
United Airlines Logo
12:30 pm - 6:57 pmOPO-CLE
35h 27m2 stops
$636United Airlines
Find Deal
Sun, Oct 5 - Tue, Oct 14
Lufthansa Logo
7:37 pm - 11:20 pmCLE-OPO
22h 43m2 stops
Lufthansa Logo
6:00 am - 10:23 pmOPO-CLE
21h 23m2 stops
$662Lufthansa
Find Deal
Mon, Oct 6 - Thu, Oct 23
Lufthansa Logo
7:37 pm - 10:50 pmCLE-OPO
22h 13m2 stops
Lufthansa Logo
6:00 am - 4:59 pmOPO-CLE
15h 59m2 stops
$682Lufthansa
Find Deal
Wed, Oct 8 - Tue, Oct 21
Air Canada Logo
6:15 am - 6:30 pmCLE-OPO
31h 15m2 stops
Air Canada Logo
6:00 am - 7:28 pmOPO-CLE
18h 28m2 stops
$719Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 20
Delta Logo
7:07 pm - 10:15 pmCLE-OPO
22h 08m2 stops
Delta Logo
4:20 pm - 4:14 pmOPO-CLE
28h 54m2 stops
$730Delta
Find Deal
Sun, Oct 5 - Fri, Oct 24
Air Canada Logo
6:15 am - 6:15 pmCLE-OPO
31h 00m2 stops
Air Canada Logo
8:40 am - 3:23 pmOPO-CLE
35h 43m2 stops
$826Air Canada
Find Deal
Mon, Oct 6 - Fri, Oct 24
Delta Logo
6:03 pm - 3:30 pmCLE-OPO
16h 27m2 stops
Delta Logo
9:20 am - 11:49 pmOPO-CLE
19h 29m2 stops
$881Delta
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $633 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$591
Multiple Airlines
Sun 10/5Wed 10/22
CLE - OPO • 1 stop
Cheapest one-way
$408
Multiple Airlines
Wed 9/24
CLE - OPO • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Booking Insights

KAYAK's insights & trends for Cleveland to Porto flights

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

Which airlines provide the cheapest flights from Cleveland to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Cleveland to Porto were found on United Airlines ($633) and Lufthansa ($662).

Good to know

Low seasonNovember
Cheapest flight$408
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Cleveland to Porto

When to book flights from Cleveland to Porto

Are your dates flexible? Find out the best times to travel from Cleveland 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 flights from Cleveland to Porto

  • What is the cheapest flight from Cleveland to Porto?

    In the last 3 days, the lowest price for a flight from Cleveland to Porto was $408 for a one-way ticket and $591 for a round-trip.

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

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

  • Which airports will I be using when flying from Cleveland to Porto?

    On your way to Porto, you’ll fly out from Cleveland Hopkins Intl. You’ll be landing at Porto.

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

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

  • Which airline alliances offer flights from Cleveland to Porto?

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

  • How does KAYAK find such low prices on flights from Cleveland 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 Cleveland to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Cleveland 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 Cleveland 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 Cleveland with another airline. Booking your flights between Cleveland 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 Cleveland 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 Cleveland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Cleveland to Porto

 
See real verified KAYAK customer reviews for airlines flying from Cleveland 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 Cleveland 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.
7.4
United AirlinesOverall score based on 8924 reviews
7.7Boarding
8.1Crew
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sep 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

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

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