$518 Find Cheap Flights from Dayton to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dayton to Portugal departing on 6/14. 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
Lisbon2 stops$542
Porto
Porto2 stops$697
Lisbon
Lisbon2 stops$542
Porto
Porto2 stops$697

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

Tue, Mar 3 - Thu, Mar 19
Lufthansa Logo
5:49 pm - 11:30 pm
DAY
-
LIS
24h 41m
2 stops
Lufthansa Logo
6:10 am - 11:43 pm
LIS
-
DAY
21h 33m
2 stops
$542Lufthansa
Tue, Mar 3 - Thu, Mar 19
United Airlines Logo
2:57 pm - 10:15 am
DAY
-
LIS
14h 18m
1 stop
United Airlines Logo
5:00 am - 7:38 pm
LIS
-
DAY
18h 38m
2 stops
$545United Airlines
Tue, Mar 3 - Thu, Mar 19
United Airlines Logo
2:57 pm - 10:15 am
DAY
-
LIS
14h 18m
1 stop
United Airlines Logo
6:10 am - 11:43 pm
LIS
-
DAY
21h 33m
2 stops
$547United Airlines
Tue, Mar 3 - Thu, Mar 19
United Airlines Logo
2:57 pm - 10:15 am
DAY
-
LIS
14h 18m
1 stop
United Airlines Logo
5:00 am - 7:38 pm
LIS
-
DAY
42h 38m
2 stops
$551United Airlines
Tue, Mar 3 - Thu, Mar 19
Delta Logo
2:39 pm - 5:30 pm
DAY
-
LIS
21h 51m
2 stops
Delta Logo
5:00 am - 10:48 pm
LIS
-
DAY
21h 48m
2 stops
$552Delta
Tue, Mar 3 - Thu, Mar 19
United Airlines Logo
11:00 am - 10:15 am
DAY
-
LIS
18h 15m
2 stops
United Airlines Logo
5:00 am - 7:38 pm
LIS
-
DAY
42h 38m
2 stops
$555United Airlines
Tue, Mar 3 - Thu, Mar 19
United Airlines Logo
9:45 am - 10:15 am
DAY
-
LIS
19h 30m
1 stop
United Airlines Logo
11:55 am - 7:38 pm
LIS
-
DAY
11h 43m
1 stop
$557United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
9:45 am - 10:15 am
DAY
-
LIS
19h 30m
1 stop
United Airlines Logo
5:00 am - 10:14 pm
LIS
-
DAY
22h 14m
2 stops
$595United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
11:00 am - 8:10 am
DAY
-
LIS
16h 10m
2 stops
United Airlines Logo
5:00 am - 8:09 pm
LIS
-
DAY
20h 09m
2 stops
$599United Airlines
Tue, May 19 - Thu, May 28
Lufthansa Logo
10:28 am - 11:25 pm
DAY
-
OPO
31h 57m
2 stops
Lufthansa Logo
6:20 am - 10:23 pm
OPO
-
DAY
21h 03m
2 stops
$875Lufthansa
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 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 ($547) and Lufthansa ($989).

Find deals

Good to know

Cheapest flight$518
Flight from Dayton to Porto

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.

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 9289 reviews
7.3Comfort
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Both the WIFI and entertainment did not work for 2.5h

6.0 GoodAnonymous, Feb 2026
HNL - NRT
Read more United Airlines reviews

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

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

Information on your arrival and departure airports

Dayton (DAY)