$293 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 7/20. 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$550
Porto
Porto2 stops$663
Lisbon
Lisbon2 stops$550
Porto
Porto2 stops$663

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

Sat, Apr 11 - Sat, Apr 18
British Airways Logo
6:39 pm - 10:05 am
DAY
-
LIS
58h 26m
2 stops
British Airways Logo
6:55 pm - 10:17 pm
LIS
-
DAY
32h 22m
2 stops
$550British Airways
Wed, May 6 - Wed, May 20
United Airlines Logo
2:55 pm - 3:35 pm
DAY
-
LIS
19h 40m
2 stops
United Airlines Logo
7:25 am - 10:14 pm
LIS
-
DAY
19h 49m
2 stops
$589United Airlines
Wed, May 6 - Thu, May 21
United Airlines Logo
2:55 pm - 3:35 pm
DAY
-
LIS
19h 40m
2 stops
United Airlines Logo
6:15 am - 7:01 pm
LIS
-
DAY
17h 46m
2 stops
$590United Airlines
Wed, May 6 - Thu, May 21
United Airlines Logo
2:55 pm - 3:35 pm
DAY
-
LIS
19h 40m
2 stops
United Airlines Logo
12:20 pm - 7:01 pm
LIS
-
DAY
11h 41m
1 stop
$610United Airlines
Wed, May 6 - Wed, May 20
United Airlines Logo
2:55 pm - 3:35 pm
DAY
-
LIS
19h 40m
2 stops
United Airlines Logo
12:20 pm - 9:48 am
LIS
-
DAY
26h 28m
1 stop
$616United Airlines
Thu, Apr 9 - Thu, Apr 16
KLM Logo
6:00 am - 2:35 pm
DAY
-
LIS
27h 35m
2 stops
KLM Logo
5:00 am - 12:17 am
LIS
-
DAY
24h 17m
2 stops
$640KLM
Mon, May 11 - Thu, May 21
Iberia Logo
6:30 pm - 11:25 pm
DAY
-
LIS
23h 55m
2 stops
Iberia Logo
6:35 am - 10:59 pm
LIS
-
DAY
21h 24m
2 stops
$651Iberia
Tue, Aug 18 - Wed, Sep 2
Multiple Airlines Logo
11:05 am - 10:30 am
DAY
-
OPO
18h 25m
2 stops
Multiple Airlines Logo
5:55 am - 11:15 pm
OPO
-
DAY
22h 20m
2 stops
$663Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
British Airways Logo
4:11 pm - 6:10 pm
DAY
-
LIS
20h 59m
2 stops
British Airways Logo
11:05 am - 9:38 pm
LIS
-
DAY
15h 33m
1 stop
$663British Airways
Thu, Apr 9 - Thu, Apr 16
KLM Logo
11:31 am - 10:40 am
DAY
-
OPO
18h 09m
2 stops
KLM Logo
5:00 am - 12:17 am
OPO
-
DAY
24h 17m
2 stops
$698KLM
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 ($615) and British Airways ($672).

Good to know

Cheapest flight$293
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 9348 reviews
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
Airline reviews

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

2.0 MediocreCameron, Feb 2026
GRR - DEN
Read more United Airlines reviews

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Flight on time. Excellent service in Premium Economy. Great food served and cleaned up promptly. Unfortunately the climate control was malfunctioning and it was very cold and felt a bit like camping. Cold helps with sleep though so not complaining too much. Slept well. It asks to rate "entertainment". I do not like any IFE, don't shove a big screen in my face—I have my own phone if I want it. So this will always get low ratings.

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

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

Information on your arrival and departure airports