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Portugal

$589+ Cheap flights from Dayton (DAY) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — LIS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Dayton to Portugal

Keep the following information in mind while searching for Dayton to Portugal flight deals. Data was last updated September 11, 2025.

Round-trip from

$589
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$1,082
From Dayton to Portugal
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($169 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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 11/189:15 amDAY - LIS
2 stops19h 05mUnited Airlines
Wed 11/2611:20 amLIS - DAY
2 stops31h 08mUnited Airlines
Deal found 9/10$589
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/162:50 pmDAY - LIS
2 stops12h 20mUnited Airlines
Wed 11/2611:20 amLIS - DAY
2 stops31h 08mUnited Airlines
Deal found 9/10$593
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:17 pmDAY - LIS
2 stops18h 23mBritish Airways
Wed 11/266:30 amLIS - DAY
2 stops19h 06mBritish Airways
Deal found 9/10$598
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/187:45 pmDAY - LIS
1 stop9h 30mUnited Airlines
Fri 11/285:00 amLIS - DAY
2 stops20h 15mUnited Airlines
Deal found 9/10$599
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/169:15 amDAY - LIS
2 stops17h 55mUnited Airlines
Fri 11/285:00 amLIS - DAY
2 stops20h 15mUnited Airlines
Deal found 9/10$603
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/197:45 pmDAY - LIS
1 stop9h 30mUnited Airlines
Tue 11/2511:55 amLIS - DAY
1 stop31h 19mUnited Airlines
Deal found 9/10$611
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/197:00 amDAY - LIS
2 stops20h 10mUnited Airlines
Fri 11/285:00 amLIS - DAY
2 stops20h 15mUnited Airlines
Deal found 9/10$641
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/182:10 pmDAY - LIS
2 stops14h 10mUnited Airlines
Sun 11/235:00 amLIS - DAY
2 stops20h 15mUnited Airlines
Deal found 9/10$649
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/162:50 pmDAY - LIS
2 stops12h 20mUnited Airlines
Sun 11/235:00 amLIS - DAY
2 stops19h 01mUnited Airlines
Deal found 9/10$653
This Ovago deal was found by Cheapflights users on 9/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:17 pmDAY - LIS
2 stops16h 53mMultiple Airlines
Tue 11/258:20 amLIS - DAY
2 stops17h 16mMultiple Airlines
Deal found 9/10$728
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:01 pmDAY - LIS
2 stops17h 39mBritish Airways
Tue 10/711:05 amLIS - DAY
1 stop17h 05mBritish Airways
Deal found 9/11$732

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 September 11, 2025.
Use the filters below to find and compare flights from Dayton to Portugal that are best for you.

Fly from

Dayton

Fly to

Portugal

Route

Depart

Return

Price

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 11/17

10:27 am-10:15 am

1 stop18h 48m

Lisbon Humberto Delgado

Wed 11/26

11:20 am-1:28 pm

2 stops31h 08m

$589

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sun 11/16

2:50 pm-8:10 am

2 stops12h 20m

Lisbon Humberto Delgado

Wed 11/26

11:20 am-1:28 pm

2 stops31h 08m

$593

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 11/18

7:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Fri 11/28

5:00 am-8:15 pm

2 stops20h 15m

$599

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sun 11/16

2:50 pm-10:15 am

1 stop14h 25m

Lisbon Humberto Delgado

Tue 11/25

5:00 am-7:01 pm

2 stops19h 01m

$599

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Wed 11/19

7:45 pm-10:15 am

1 stop9h 30m

Lisbon Humberto Delgado

Thu 11/27

5:00 am-5:04 pm

2 stops17h 04m

$599

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Wed 11/19

7:45 pm-10:15 am

1 stop9h 30m

Lisbon Humberto Delgado

Fri 11/28

5:00 am-8:15 pm

2 stops20h 15m

$599

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 11/18

7:45 pm-10:15 am

1 stop9h 30m

Lisbon Humberto Delgado

Tue 11/25

5:00 am-7:01 pm

2 stops19h 01m

$599

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Wed 11/19

7:45 pm-10:15 am

1 stop9h 30m

Lisbon Humberto Delgado

Wed 11/26

11:55 am-7:01 pm

1 stop12h 06m

$605

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Wed 11/19

7:45 pm-10:15 am

1 stop9h 30m

Lisbon Humberto Delgado

Tue 11/25

11:55 am-2:14 pm

1 stop31h 19m

$611

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Sun 1/18

6:00 am-10:30 am

2 stops23h 30m

Porto

Sat 1/24

11:15 am-11:16 pm

2 stops41h 01m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
2

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, January is the cheapest month in which you can book a flight from Dayton to Portugal (average of $612). Flying from Dayton to Portugal in June is currently the most expensive (average of $1,127). 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.

What is the cheapest time of day to fly from DAY to PT?

Find hourly flight availability from Dayton to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Dayton to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with United Airlines from Dayton to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 18h 48m. United Airlines provides one of the quickest options available for as low as $589. The distance between Dayton and Portugal is about 3883 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, January is the cheapest month in which you can book a flight from Dayton to Portugal (average of $612). Flying from Dayton to Portugal in June is currently the most expensive (average of $1,127). 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.

See more FAQs

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Top airline flying from Dayton to Portugal

Discover the top airline that operate flights from Dayton to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$575Average$942FlexibilityNo cancel feeOn-time69%

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