$543 Find Cheap Flights from Dayton to Portugal

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dayton to Portugal departing on 12/10. 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, 0 bags

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Cheap Flights from Dayton to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$543
Porto
Porto2 stops$615
Lisbon
Lisbon1 stop$543
Porto
Porto2 stops$615

Book Cheap Dayton to Portugal Plane Tickets

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

Wed, Dec 10 - Wed, Dec 17
United Airlines Logo
10:00 am - 10:15 amDAY-LIS
19h 15m1 stop
United Airlines Logo
6:10 am - 11:18 pmLIS-DAY
22h 08m2 stops
$543United Airlines
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Wed, Dec 10 - Wed, Dec 17
United Airlines Logo
11:43 am - 8:10 amDAY-LIS
15h 27m2 stops
United Airlines Logo
6:10 am - 11:18 pmLIS-DAY
22h 08m2 stops
$547United Airlines
Find Deal
Tue, Dec 30 - Thu, Jan 8
United Airlines Logo
10:38 am - 8:55 amDAY-LIS
41h 17m2 stops
United Airlines Logo
5:00 am - 7:37 pmLIS-DAY
19h 37m2 stops
$595United Airlines
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Wed, Dec 10 - Wed, Dec 17
Lufthansa Logo
5:53 pm - 10:25 pmDAY-OPO
23h 32m2 stops
Lufthansa Logo
6:00 am - 4:51 pmOPO-DAY
15h 51m2 stops
$615Lufthansa
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Wed, Dec 10 - Wed, Dec 17
American Airlines Logo
5:49 am - 6:55 amDAY-LIS
20h 06m1 stop
American Airlines Logo
11:05 am - 8:34 pmLIS-DAY
14h 29m1 stop
$618American Airlines
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Tue, Dec 30 - Thu, Jan 8
American Airlines Logo
5:16 pm - 2:45 pmDAY-LIS
16h 29m2 stops
American Airlines Logo
8:55 am - 8:38 pmLIS-DAY
16h 43m1 stop
$698American Airlines
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Tue, Dec 30 - Thu, Jan 8
British Airways Logo
1:11 pm - 5:40 pmDAY-LIS
23h 29m2 stops
British Airways Logo
7:00 am - 8:38 pmLIS-DAY
18h 38m2 stops
$711British Airways
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Sat, Dec 6 - Wed, Dec 10
Delta Logo
11:19 am - 9:00 amDAY-LIS
16h 41m2 stops
Delta Logo
5:00 am - 5:47 pmLIS-DAY
17h 47m2 stops
$794Delta
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Tue, Dec 30 - Wed, Jan 7
Lufthansa Logo
2:51 pm - 10:15 amDAY-LIS
14h 24m1 stop
Lufthansa Logo
5:00 am - 5:03 pmLIS-DAY
17h 03m2 stops
$859Lufthansa
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Thu, Nov 27 - Thu, Jan 1
Delta Logo
4:10 pm - 3:25 pmDAY-OPO
18h 15m2 stops
Delta Logo
6:35 am - 9:02 pmOPO-DAY
19h 27m2 stops
$1,031Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Dayton to Portugal flights

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

Which airlines fly non-stop between Dayton and Portugal?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Dayton to Portugal.

There is just one airline that flies from Dayton to Portugal direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Lisbon (LIS) and costs $575.

Which airlines provide the cheapest flights from Dayton to Portugal?

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 Dayton to Portugal were found on United Airlines ($543) and Lufthansa ($615).

Good to know

Low seasonFebruary
Cheapest flight$543
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Dayton to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Dayton to Portugal?

    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 Dayton to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Dayton to Portugal 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 Dayton to Portugal?

    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 from Dayton to Portugal with an airline and back with another airline.

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

    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 from Dayton to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Portugal?

    The cheapest time of day to fly to Portugal is generally in the morning, when round-trip flights cost $801 on average. Morning departures are around 13% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,308.

Reviews of the top airline flying from Dayton to Portugal

 
Need help choosing which airline to fly with from Dayton to Portugal? 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 8999 reviews
7.7Boarding
7.3Comfort
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

The person I bought the ticket for didn’t make the flight.

2.0 MediocreAnonymous, Oct 2025ORF - EWR
Read more United Airlines reviews

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

Everything you need to know for your flight from Dayton to Portugal

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