SLC - OPO

$637 Find Cheap Flights from Salt Lake City to Porto

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Salt Lake City to Porto departing on 12/3. 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 Salt Lake City 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 Salt Lake City to Porto, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Salt Lake City to Porto (SLC-OPO)

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

Wed, Dec 3 - Sat, Dec 13
Delta Logo
2:10 pm - 10:30 amSLC-OPO
13h 20m1 stop
Delta Logo
6:00 am - 7:59 pmOPO-SLC
20h 59m2 stops
$637Delta
Find Deal
Wed, Dec 3 - Sat, Dec 13
Delta Logo
9:35 am - 10:30 amSLC-OPO
17h 55m2 stops
Delta Logo
6:00 am - 7:59 pmOPO-SLC
20h 59m2 stops
$641Delta
Find Deal
Wed, Dec 3 - Sat, Dec 13
KLM Logo
2:10 pm - 10:30 amSLC-OPO
13h 20m1 stop
KLM Logo
6:00 am - 7:59 pmOPO-SLC
20h 59m2 stops
$643KLM
Find Deal
Wed, Dec 3 - Sat, Dec 13
Air France Logo
2:10 pm - 10:30 amSLC-OPO
13h 20m1 stop
Air France Logo
11:25 am - 1:25 pmOPO-SLC
33h 00m1 stop
$645Air France
Find Deal
Wed, Dec 3 - Sat, Dec 13
Air France Logo
2:10 pm - 10:30 amSLC-OPO
13h 20m1 stop
Air France Logo
11:25 am - 1:25 pmOPO-SLC
33h 00m1 stop
$646Air France
Find Deal
Fri, Nov 7 - Fri, Nov 14
Lufthansa Logo
8:00 am - 11:40 pmSLC-OPO
32h 40m2 stops
Lufthansa Logo
6:00 am - 10:31 pmOPO-SLC
23h 31m2 stops
$658Lufthansa
Find Deal
Wed, Dec 3 - Sat, Dec 13
United Airlines Logo
6:30 am - 3:25 pmSLC-OPO
25h 55m3 stops
United Airlines Logo
6:00 am - 9:01 pmOPO-SLC
22h 01m2 stops
$667United Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28
KLM Logo
3:30 pm - 3:30 pmSLC-OPO
17h 00m1 stop
KLM Logo
11:25 am - 2:25 pmOPO-SLC
33h 00m1 stop
$675KLM
Find Deal
Sun, Nov 9 - Sun, Nov 16
United Airlines Logo
12:41 pm - 3:15 pmSLC-OPO
19h 34m2 stops
United Airlines Logo
12:35 pm - 11:13 pmOPO-SLC
17h 38m1 stop
$864United Airlines
Find Deal
Fri, Dec 19 - Fri, Dec 26
Lufthansa Logo
10:57 am - 11:40 pmSLC-OPO
29h 43m2 stops
Lufthansa Logo
12:30 pm - 8:57 pmOPO-SLC
39h 27m2 stops
$1,677Lufthansa
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $637 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 31% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$637
Overall average: $770
Delta
Wed 12/3Sat 12/13
SLC - OPO • 1 stop
Cheapest one-way
Multiple Airlines
Thu 9/25
SLC - OPO • multi-stop
Start a new search
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 Salt Lake City to Porto flights

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

What’s the cheapest day of the week to fly from Salt Lake City to Porto?

The average price of all round-trip flights from Salt Lake City to Porto clicked on KAYAK for each day over the last 12 months.

For Salt Lake City to Porto, Monday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Porto back to Salt Lake City, the best deals are generally found on Wednesday, with Monday being the most expensive.

What is the cheapest month to fly from Salt Lake City to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Salt Lake City to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Salt Lake City to Porto is January, where tickets cost $697 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,931 and $1,451 respectively.

Good to know

Low seasonFebruary
Cheapest flight$637
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Salt Lake City to Porto

When to book flights from Salt Lake City to Porto

Are your dates flexible? Find out the best times to travel from Salt Lake City 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 Salt Lake City to Porto

  • What is the cheapest flight from Salt Lake City to Porto?

    In the last 3 days, the lowest price for a flight from Salt Lake City to Porto was $637 for a round-trip ticket.

  • Do I need a passport to fly between Salt Lake City and Porto?

    Yes

  • Which aircraft models fly most regularly from Salt Lake City to Porto?

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

  • Which airline alliances offer flights from Salt Lake City to Porto?

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

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

    The two airlines most popular with KAYAK users for flights from Salt Lake City to Porto are Delta and KLM. With an average price for the route of $1,101 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 $1,144 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Salt Lake City 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 Salt Lake City to Porto.

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

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

Reviews of the top 3 airlines serving from Salt Lake City to Porto

 
See real verified KAYAK customer reviews for airlines flying from Salt Lake City 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 Salt Lake City 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 7973 reviews
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
8.2Boarding
Airline reviews

Cramped seating for me. Luckily it wasn’t a long flight

6.0 GoodAnonymous, Sep 2025ATL - MDW
Read more Delta reviews

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

The airport was reasonably clean. The boarding process reasonably efficient. The cabin crew was efficient, polite but not that friendly. The food quality was unremarkable and the choices were awful . There was either a so so chicken dish or a “ vegetarian “ option which was really cheap carbohydrates drowned in cheese. Signing onto i flight wifi was not straightforward. Overall it was a very average experience

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

The service was great. However the lounge only gets passing grade

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

Terrible. They wouldn't allow me on my flight on the 14th..

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.

Everything you need to know for your flight from Salt Lake City to Porto

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