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Portugal

$530+ Cheap flights from Dayton (DAY) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — LIS
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheap flight deals from Dayton to Portugal

Cheapest flights from Dayton to Portugal
Explore the most affordable flight options available from Dayton to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/710:20 am
DAY
-
LIS
1 stop18h 55m
United Airlines
Thu 12/105:00 am
LIS
-
DAY
2 stops23h 44m
United Airlines
Deal found 3/23$703
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:39 am
DAY
-
OPO
2 stops22h 36m
United Airlines
Tue 12/86:00 am
OPO
-
DAY
2 stops17h 56m
United Airlines
Deal found 3/23$764
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:45 pm
DAY
-
OPO
2 stops14h 45m
United Airlines
Tue 11/1012:30 pm
OPO
-
DAY
2 stops16h 14m
United Airlines
Deal found 3/26$800
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:00 am
DAY
-
OPO
2 stops16h 55m
United Airlines
Wed 9/212:35 pm
OPO
-
DAY
2 stops14h 48m
United Airlines
Deal found 3/23$803
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/22:05 pm
DAY
-
LIS
2 stops15h 25m
United Airlines
Tue 4/712:20 pm
LIS
-
DAY
1 stop11h 38m
United Airlines
Deal found 3/26$1,028
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:55 pm
DAY
-
LIS
2 stops34h 05m
United Airlines
Tue 7/2111:25 am
LIS
-
DAY
2 stops51h 23m
United Airlines
Deal found 3/23$1,089
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:55 pm
DAY
-
LIS
2 stops34h 05m
United Airlines
Wed 7/1512:20 pm
LIS
-
DAY
2 stops27h 44m
United Airlines
Deal found 3/24$1,114
This Finnair deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:17 pm
DAY
-
LIS
2 stops24h 08m
Finnair
Wed 7/156:35 am
LIS
-
DAY
2 stops21h 24m
Finnair
Deal found 3/25$1,154
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:47 am
DAY
-
LIS
1 stop22h 18m
American Airlines
Tue 4/711:05 am
LIS
-
DAY
1 stop15h 33m
American Airlines
Deal found 3/26$1,162
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:45 am
DAY
-
PDL
2 stops19h 55m
United Airlines
Sun 5/1711:00 am
PDL
-
DAY
2 stops16h 59m
United Airlines
Deal found 3/26$1,266
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:43 pm
DAY
-
PDL
2 stops32h 57m
United Airlines
Mon 6/811:00 am
PDL
-
DAY
2 stops15h 23m
United Airlines
Deal found 3/26$1,334
This KAYAK deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:03 pm
DAY
-
OPO
2 stops23h 42m
Lufthansa
Wed 5/206:00 am
OPO
-
DAY
2 stops21h 19m
Lufthansa
Deal found 3/23$1,475

Find flight deals from Dayton to Portugal

Keep the following information in mind while searching for Dayton to Portugal flight deals. Data was last updated March 28, 2026.

Round-trip from

$803
(United Airlines)

One-way from

$530
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$995
From Dayton to Portugal
Search Deals
One-way flight from Dayton to Portugal
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($412 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($80 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dayton to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Dayton to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 8/18

11:05 am-10:30 am

2 stops18h 25m

Porto

Wed 9/2

5:55 am-5:51 pm

2 stops16h 56m

$803

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 8/18

9:00 am-6:55 am

2 stops16h 55m

Porto

Wed 9/2

12:35 pm-10:23 pm

2 stops14h 48m

$803

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Thu 7/2

7:55 pm-11:00 am

2 stops34h 05m

Lisbon Humberto Delgado

Tue 7/21

11:25 am-9:48 am

2 stops51h 23m

$1,089

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

7:55 pm-11:00 am

2 stops34h 05m

Lisbon Humberto Delgado

Wed 7/15

12:20 pm-11:04 am

2 stops27h 44m

$1,114

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 6/2

6:46 pm-8:00 am

2 stops32h 14m

Lisbon Humberto Delgado

Tue 6/16

11:55 am-11:54 pm

2 stops16h 59m

$1,188

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 6/2

6:46 pm-8:00 am

2 stops32h 14m

Lisbon Humberto Delgado

Thu 6/18

11:55 am-11:54 pm

2 stops16h 59m

$1,188

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Thu 7/2

5:50 am-9:05 am

1 stop22h 15m

Lisbon Humberto Delgado

Tue 7/21

11:05 am-9:25 pm

1 stop15h 20m

$1,191

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

5:50 am-9:05 am

1 stop22h 15m

Lisbon Humberto Delgado

Wed 7/15

11:05 am-9:25 pm

1 stop15h 20m

$1,191

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sun 6/7

6:38 pm-6:45 pm

2 stops19h 07m

Lisbon Humberto Delgado

Tue 6/16

11:55 am-11:54 pm

2 stops16h 59m

$1,192

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sun 6/7

5:55 am-10:30 am

2 stops23h 35m

Lisbon Humberto Delgado

Tue 6/16

11:25 am-2:18 pm

2 stops31h 53m

$1,204

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Dayton to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Dayton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Dayton to Portugal?

Currently, February is the cheapest month in which you can book a flight from Dayton to Portugal (average of $462). Flying from Dayton to Portugal in July is currently the most expensive (average of $804). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Dayton to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dayton to Portugal?

    For a flight from Dayton to Portugal, you will be flying from Dayton. Dayton (DAY) is just 10.0 mi from the center of the city.

  • How long is the flight from Dayton to Portugal?

    A quick flight from Dayton to Portugal can take about 16h 55m. KLM provides one of the quickest options available for as low as $803. The distance between Dayton and Portugal is about 3829 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Dayton to Portugal?

    Most travelers choose Dayton - Lisbon Humberto Delgado, Dayton - Porto or Dayton - Ponta Delgada Nordela when deciding on the best route from Dayton to Portugal.

  • Can I find deals for flights from Dayton to Portugal that include hotel bookings?

    Yes. In addition to deals on Dayton to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dayton to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dayton to Portugal.

  • Can I find deals for business class flights from Dayton to Portugal?

    Yes. Cheapflights offers flight deals from Dayton to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dayton to Portugal?

    Currently, February is the cheapest month in which you can book a flight from Dayton to Portugal (average of $462). Flying from Dayton to Portugal in July is currently the most expensive (average of $804). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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