$407 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 3/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Portugal

Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dayton to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$453
Porto
Porto2 stops$491
Lisbon
Lisbon2 stops$453
Porto
Porto2 stops$491

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
Multiple Airlines Logo
12:41 pm - 12:05 pm
DAY
-
LIS
18h 24m2 stops
Multiple Airlines Logo
6:30 am - 9:24 pm
LIS
-
DAY
18h 54m2 stops
$453Multiple Airlines
Tue, Mar 3 - Thu, Mar 19
British Airways Logo
12:41 pm - 2:45 pm
DAY
-
LIS
21h 04m2 stops
British Airways Logo
7:00 am - 9:24 pm
LIS
-
DAY
18h 24m2 stops
$458British Airways
Tue, Mar 3 - Thu, Mar 19
British Airways Logo
12:41 pm - 2:45 pm
DAY
-
LIS
21h 04m2 stops
British Airways Logo
10:55 am - 9:24 pm
LIS
-
DAY
14h 29m1 stop
$470British Airways
Fri, Feb 27 - Fri, Mar 6
British Airways Logo
12:41 pm - 10:25 pm
DAY
-
LIS
28h 44m2 stops
British Airways Logo
7:05 am - 10:30 pm
LIS
-
DAY
20h 25m2 stops
$483British Airways
Tue, Mar 3 - Thu, Mar 19
Lufthansa Logo
2:57 pm - 10:15 am
DAY
-
LIS
14h 18m1 stop
Lufthansa Logo
5:00 am - 11:43 pm
LIS
-
DAY
22h 43m2 stops
$488Lufthansa
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
2:57 pm - 9:30 am
DAY
-
OPO
13h 33m2 stops
United Airlines Logo
6:00 am - 7:38 pm
OPO
-
DAY
18h 38m2 stops
$491United Airlines
Sun, Feb 22 - Sun, Mar 1
United Airlines Logo
9:00 am - 9:30 am
DAY
-
OPO
19h 30m2 stops
United Airlines Logo
6:00 am - 1:25 pm
OPO
-
DAY
36h 25m2 stops
$492United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
2:57 pm - 10:15 am
DAY
-
LIS
14h 18m1 stop
United Airlines Logo
5:00 am - 2:22 pm
LIS
-
DAY
38h 22m2 stops
$495United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
11:00 am - 8:10 am
DAY
-
LIS
16h 10m2 stops
United Airlines Logo
5:00 am - 7:38 pm
LIS
-
DAY
19h 38m2 stops
$500United Airlines
Tue, Mar 3 - Thu, Mar 19
American Airlines Logo
5:47 am - 9:05 am
DAY
-
LIS
22h 18m1 stop
American Airlines Logo
10:55 am - 9:24 pm
LIS
-
DAY
14h 29m1 stop
$513American Airlines
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 British Airways ($458) and Lufthansa ($488).

Find deals

Good to know

Cheapest flight$407
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 9143 reviews
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

4.0 OkayWalter, Jan 2026
CLE - SFO
Read more United Airlines reviews

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

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

Information on your arrival and departure airports

Dayton (DAY)