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Cheap flights from Dayton to Portugal from $346

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dayton to Portugal departing on 11/4. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Dayton to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:39 am - 9:30 am
DAY
-
OPO
16h 51m
2 stops
United Airlines Logo
6:00 am - 8:31 pm
OPO
-
DAY
19h 31m
2 stops
$750United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
2:44 pm - 9:30 am
DAY
-
OPO
13h 46m
2 stops
United Airlines Logo
12:35 pm - 9:47 am
OPO
-
DAY
26h 12m
2 stops
$759United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
2:44 pm - 10:15 am
DAY
-
LIS
14h 31m
1 stop
United Airlines Logo
11:55 am - 6:41 pm
LIS
-
DAY
11h 46m
1 stop
$827United Airlines
Mon, Dec 7 - Wed, Dec 9
United Airlines Logo
10:20 am - 10:15 am
DAY
-
LIS
18h 55m
1 stop
United Airlines Logo
11:55 am - 6:41 pm
LIS
-
DAY
11h 46m
1 stop
$828United Airlines
Mon, Dec 7 - Wed, Dec 9
Iberia Logo
5:28 pm - 11:50 am
DAY
-
LIS
37h 22m
2 stops
Iberia Logo
8:25 am - 8:48 pm
LIS
-
DAY
17h 23m
2 stops
$865Iberia
Sat, Oct 10 - Tue, Oct 20
Iberia Logo
7:09 pm - 11:25 pm
DAY
-
LIS
23h 16m
2 stops
Iberia Logo
8:45 pm - 8:48 pm
LIS
-
DAY
29h 03m
2 stops
$871Iberia
Mon, Sep 21 - Mon, Oct 5
Multiple Airlines Logo
7:15 am - 7:00 am
DAY
-
OPO
18h 45m
2 stops
Multiple Airlines Logo
11:20 am - 11:00 am
OPO
-
DAY
28h 40m
2 stops
$891Multiple Airlines
Tue, Aug 18 - Wed, Sep 2
Multiple Airlines Logo
7:15 am - 7:00 am
DAY
-
OPO
18h 45m
2 stops
Multiple Airlines Logo
11:20 am - 11:00 am
OPO
-
DAY
28h 40m
2 stops
$892Multiple Airlines
Tue, Aug 18 - Wed, Sep 2
American Airlines Logo
8:00 am - 9:05 am
DAY
-
LIS
20h 05m
1 stop
American Airlines Logo
8:25 am - 8:48 pm
LIS
-
DAY
17h 23m
2 stops
$912American Airlines
Sat, Oct 10 - Thu, Oct 15
American Airlines Logo
2:00 pm - 9:05 am
DAY
-
LIS
14h 05m
2 stops
American Airlines Logo
8:25 am - 8:48 pm
LIS
-
DAY
17h 23m
2 stops
$917American Airlines
Sat, Oct 10 - Thu, Oct 15

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Lufthansa flights from Dayton to Portugal

Our best Lufthansa deals on Dayton to Portugal flight tickets
Lufthansa
Jul 8
DAY2:53 pmDayton
26h 52m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Jul 14
LIS6:45 amLisbon Humberto Delgado
22h 04m
2 stops
DAY11:49 pmDayton
$956
Lufthansa
Oct 10
DAY2:55 pmDayton
14h 40m
1 stop
LIS10:35 amLisbon Humberto Delgado
Oct 13
LIS12:20 pmLisbon Humberto Delgado
26h 27m
1 stop
DAY9:47 amDayton
$1,047
Lufthansa
Jun 20
DAY2:53 pmDayton
14h 42m
1 stop
LIS10:35 amLisbon Humberto Delgado
Jun 27
LIS6:10 pmLisbon Humberto Delgado
28h 20m
2 stops
DAY5:30 pmDayton
$5,205

United Airlines flights from Dayton to Portugal

Our best United Airlines deals on Dayton to Portugal flight tickets
United Airlines
Dec 6
DAY11:39 amDayton
16h 51m
2 stops
OPO9:30 amPorto
Dec 10
OPO6:00 amPorto
19h 31m
2 stops
DAY8:31 pmDayton
$750
United Airlines
Nov 16
DAY2:44 pmDayton
13h 46m
2 stops
OPO9:30 amPorto
Nov 18
OPO12:35 pmPorto
26h 12m
2 stops
DAY9:47 amDayton
$759
United Airlines
Dec 7
DAY2:44 pmDayton
14h 31m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 9
LIS11:55 amLisbon Humberto Delgado
11h 46m
1 stop
DAY6:41 pmDayton
$827

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 June 13, 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

Sun 12/6

11:39 am-9:30 am

2 stops16h 51m

Porto

Thu 12/10

6:00 am-8:31 pm

2 stops19h 31m

$750

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Mon 11/16

2:44 pm-9:30 am

2 stops13h 46m

Porto

Wed 11/18

12:35 pm-9:47 am

2 stops26h 12m

$759
Quickest round-trip

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 12/7

2:44 pm-10:15 am

1 stop14h 31m

Lisbon Humberto Delgado

Wed 12/9

11:55 am-6:41 pm

1 stop11h 46m

$827

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 12/7

10:20 am-10:15 am

1 stop18h 55m

Lisbon Humberto Delgado

Wed 12/9

11:55 am-6:41 pm

1 stop11h 46m

$828

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 10/10

5:28 pm-11:50 am

2 stops37h 22m

Lisbon Humberto Delgado

Tue 10/20

8:25 am-8:48 pm

2 stops17h 23m

$865

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Mon 9/21

7:09 pm-11:25 pm

2 stops23h 16m

Lisbon Humberto Delgado

Mon 10/5

8:45 pm-8:48 pm

2 stops29h 03m

$871

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 8/18

7:15 am-7:00 am

2 stops18h 45m

Porto

Wed 9/2

11:20 am-11:00 am

2 stops28h 40m

$891

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 8/18

7:15 am-7:00 am

2 stops18h 45m

Porto

Wed 9/2

11:20 am-11:00 am

2 stops28h 40m

$892

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 10/10

8:00 am-9:05 am

1 stop20h 05m

Lisbon Humberto Delgado

Thu 10/15

8:25 am-8:48 pm

2 stops17h 23m

$912

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 10/10

2:00 pm-9:05 am

2 stops14h 05m

Lisbon Humberto Delgado

Thu 10/15

8:25 am-8:48 pm

2 stops17h 23m

$917

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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

Can stopping save me money on Dayton to Portugal flights?

You could potentially save up to 61% 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

13h 46m

Direct flights

None
The fastest flight from Dayton to Portugal takes 13h 46m
There are no direct flights from Dayton to Portugal. There are no popular flight routes from Dayton to Portugal.
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Frequently asked questions about flying from Dayton to Portugal

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

    Prices for flights from Dayton Airport to Portugal refresh daily.

  • 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.

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.

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Find better results for your trip to Portugal

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