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Cheap flights from Dayton to Portugal from $487

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Dayton to Portugal departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Dayton to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
5:47 pm - 7:55 pm
DAY
-
LIS
21h 08m2 stops
Lufthansa Logo
5:00 am - 8:22 pm
LIS
-
DAY
20h 22m2 stops
$487Lufthansa
Mon, Jan 19 - Mon, Jan 26
British Airways Logo
1:33 pm - 12:05 pm
DAY
-
LIS
17h 32m2 stops
British Airways Logo
11:05 am - 8:38 pm
LIS
-
DAY
14h 33m1 stop
$495British Airways
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
9:05 am - 8:10 am
DAY
-
LIS
18h 05m2 stops
United Airlines Logo
5:00 am - 8:22 pm
LIS
-
DAY
20h 22m2 stops
$499United Airlines
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
2:04 pm - 11:40 am
DAY
-
OPO
16h 36m2 stops
United Airlines Logo
6:00 am - 11:45 pm
OPO
-
DAY
22h 45m2 stops
$506United Airlines
Fri, Jan 30 - Tue, Feb 3
American Airlines Logo
6:00 am - 9:05 am
DAY
-
LIS
22h 05m1 stop
American Airlines Logo
11:05 am - 8:38 pm
LIS
-
DAY
14h 33m1 stop
$511American Airlines
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
9:05 am - 11:35 am
DAY
-
LIS
21h 30m2 stops
United Airlines Logo
5:00 am - 7:38 pm
LIS
-
DAY
43h 38m2 stops
$514United Airlines
Thu, Feb 5 - Thu, Feb 12
British Airways Logo
1:33 pm - 12:05 pm
DAY
-
LIS
17h 32m2 stops
British Airways Logo
11:05 am - 8:38 pm
LIS
-
DAY
14h 33m1 stop
$704British Airways
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
9:05 am - 2:45 pm
DAY
-
OPO
24h 40m2 stops
United Airlines Logo
6:00 am - 7:38 pm
OPO
-
DAY
18h 38m2 stops
$706United Airlines
Thu, Feb 5 - Thu, Feb 12
United Airlines Logo
10:20 am - 11:00 am
DAY
-
LIS
19h 40m2 stops
United Airlines Logo
1:00 pm - 9:47 am
LIS
-
DAY
25h 47m2 stops
$838United Airlines
Tue, Jun 16 - Tue, Jun 23
American Airlines Logo
8:07 am - 9:05 am
DAY
-
LIS
19h 58m1 stop
American Airlines Logo
11:05 am - 8:22 pm
LIS
-
DAY
14h 17m1 stop
$1,340American Airlines
Tue, Jun 16 - Tue, Jun 23

United Airlines flights from Dayton to Portugal

Our best United Airlines deals on Dayton to Portugal flight tickets
United Airlines
Jan 23
DAY9:05 amDayton
18h 05m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 27
LIS5:00 amLisbon Humberto Delgado
20h 22m
2 stops
DAY8:22 pmDayton
$499
Find similar
United Airlines
Jan 30
DAY2:04 pmDayton
16h 36m
2 stops
OPO11:40 amPorto
Feb 3
OPO6:00 amPorto
22h 45m
2 stops
DAY11:45 pmDayton
$506
Find similar
United Airlines
Feb 5
DAY9:05 amDayton
21h 30m
2 stops
LIS11:35 amLisbon Humberto Delgado
Feb 12
LIS5:00 amLisbon Humberto Delgado
43h 38m
2 stops
DAY7:38 pmDayton
$514
Find similar

American Airlines flights from Dayton to Portugal

Our best American Airlines deals on Dayton to Portugal flight tickets
American Airlines
Jan 19
DAY6:00 amDayton
22h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
Jan 26
LIS11:05 amLisbon Humberto Delgado
14h 33m
1 stop
DAY8:38 pmDayton
$511
Find similar
American Airlines
Jun 16
DAY8:07 amDayton
19h 58m
1 stop
LIS9:05 amLisbon Humberto Delgado
Jun 23
LIS11:05 amLisbon Humberto Delgado
14h 17m
1 stop
DAY8:22 pmDayton
$1,340
Find similar
American Airlines
Jun 16
DAY8:07 amDayton
19h 58m
1 stop
LIS9:05 amLisbon Humberto Delgado
Jun 23
LIS11:05 amLisbon Humberto Delgado
14h 17m
1 stop
DAY8:22 pmDayton
$1,445
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
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

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 1/19

5:47 pm-7:55 pm

2 stops21h 08m

Lisbon Humberto Delgado

Mon 1/26

5:00 am-8:22 pm

2 stops20h 22m

$487

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 1/19

1:33 pm-12:05 pm

2 stops17h 32m

Lisbon Humberto Delgado

Mon 1/26

11:05 am-8:38 pm

1 stop14h 33m

$495

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Fri 1/23

9:05 am-8:10 am

2 stops18h 05m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-8:22 pm

2 stops20h 22m

$499

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Fri 1/30

2:04 pm-11:40 am

2 stops16h 36m

Porto

Tue 2/3

6:00 am-11:45 pm

2 stops22h 45m

$506

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 1/19

6:00 am-9:05 am

1 stop22h 05m

Lisbon Humberto Delgado

Mon 1/26

11:05 am-8:38 pm

1 stop14h 33m

$511

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Thu 2/5

9:05 am-11:35 am

2 stops21h 30m

Lisbon Humberto Delgado

Thu 2/12

5:00 am-7:38 pm

2 stops43h 38m

$514

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Fri 1/23

1:33 pm-12:05 pm

2 stops17h 32m

Lisbon Humberto Delgado

Tue 1/27

11:05 am-8:38 pm

1 stop14h 33m

$704

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Thu 2/5

9:05 am-2:45 pm

2 stops24h 40m

Porto

Thu 2/12

6:00 am-7:38 pm

2 stops18h 38m

$706

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 6/16

10:20 am-11:00 am

2 stops19h 40m

Lisbon Humberto Delgado

Tue 6/23

1:00 pm-9:47 am

2 stops25h 47m

$838

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Tue 6/16

8:07 am-9:05 am

1 stop19h 58m

Lisbon Humberto Delgado

Tue 6/23

11:05 am-8:22 pm

1 stop14h 17m

$1,340

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Portugal from

How to get the cheapest flight ticket from Dayton to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from Dayton. The lowest ticket price found for a Monday departure recently was $646. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,346.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the morning. Flights from Dayton to Portugal during this time can be as low as $801. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,308 per ticket.

Can stopping save me money on Dayton to Portugal flights?

You could potentially save up to 35% on your flight if you consider stops on a Dayton to Portugal flight.

Cheap Dayton to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dayton to Portugal

Fastest flight time

16h 00m

Direct flights

None
The fastest flight from Dayton to Portugal takes 16h 00m
There are no direct flights from Dayton to Portugal. There are no popular flight routes from Dayton to Portugal.
Search flight deals

  • When did momondo last update prices for flights from Dayton Airport to Portugal?

    Prices for flights from Dayton Airport to Portugal refresh daily.

  • How many operators does momondo search for flights from Dayton Airport to Portugal?

  • How old do you have to be to fly from Dayton Airport to Portugal?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dayton Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Dayton to Portugal

Compare and see reviews for airlines that fly from Dayton to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $575Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Dayton to Portugal?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Dayton to Portugal. momondo saves you time and could save you money on your trip.

Can I find flights from Dayton to Portugal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portugal from Dayton with this policy.

How can momondo help me find flights from Dayton to Portugal?

Once you have performed a search for Dayton to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Dayton to Portugal right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Portugal from Dayton. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Portugal

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