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Cheap flights from Dayton to Portugal from $832

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 8/18. 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.
United Airlines Logo
7:15 am - 7:00 am
DAY
-
OPO
18h 45m
2 stops
United Airlines Logo
12:45 pm - 2:01 pm
OPO
-
DAY
30h 16m
2 stops
$832United Airlines
Tue, Aug 18 - Wed, Sep 2
United Airlines Logo
9:00 am - 6:55 am
DAY
-
OPO
16h 55m
2 stops
United Airlines Logo
12:35 pm - 11:44 pm
OPO
-
DAY
16h 09m
2 stops
$853United Airlines
Tue, Aug 18 - Wed, Sep 2
British Airways Logo
6:17 pm - 11:05 pm
DAY
-
LIS
47h 48m
2 stops
British Airways Logo
11:05 am - 9:25 pm
LIS
-
DAY
15h 20m
1 stop
$1,053British Airways
Sat, Jul 4 - Wed, Jul 15
British Airways Logo
6:17 pm - 11:05 pm
DAY
-
LIS
47h 48m
2 stops
British Airways Logo
4:25 pm - 10:59 pm
LIS
-
DAY
35h 34m
2 stops
$1,066British Airways
Sat, Jul 4 - Wed, Jul 15
Multiple Airlines Logo
6:17 pm - 6:05 pm
DAY
-
LIS
18h 48m
2 stops
Multiple Airlines Logo
6:35 am - 10:59 pm
LIS
-
DAY
21h 24m
2 stops
$1,083Multiple Airlines
Sat, Jul 4 - Wed, Jul 15
American Airlines Logo
6:17 pm - 6:05 pm
DAY
-
LIS
18h 48m
2 stops
American Airlines Logo
11:05 am - 9:25 pm
LIS
-
DAY
15h 20m
1 stop
$1,089American Airlines
Sat, Jul 4 - Wed, Jul 15
Finnair Logo
6:17 pm - 11:25 pm
DAY
-
LIS
24h 08m
2 stops
Finnair Logo
6:35 am - 10:59 pm
LIS
-
DAY
21h 24m
2 stops
$1,093Finnair
Sat, Jul 4 - Wed, Jul 15
American Airlines Logo
5:50 am - 9:05 am
DAY
-
LIS
22h 15m
1 stop
American Airlines Logo
11:05 am - 9:25 pm
LIS
-
DAY
15h 20m
1 stop
$1,099American Airlines
Sat, Jul 4 - Wed, Jul 15
Multiple Airlines Logo
6:17 pm - 11:10 pm
DAY
-
LIS
23h 53m
2 stops
Multiple Airlines Logo
6:35 am - 10:59 pm
LIS
-
DAY
21h 24m
2 stops
$1,108Multiple Airlines
Sat, Jul 4 - Wed, Jul 15
American Airlines Logo
6:17 pm - 6:05 pm
DAY
-
LIS
18h 48m
2 stops
American Airlines Logo
11:05 am - 9:25 pm
LIS
-
DAY
15h 20m
1 stop
$1,114American Airlines
Sat, Jul 4 - Wed, Jul 15

Delta flights from Dayton to Portugal

Our best Delta deals on Dayton to Portugal flight tickets
Delta
Jun 28
DAY6:00 amDayton
23h 45m
2 stops
LIS10:45 amLisbon Humberto Delgado
Jul 9
LIS5:00 amLisbon Humberto Delgado
17h 50m
2 stops
DAY5:50 pmDayton
$1,188
Delta
Jun 28
DAY6:00 amDayton
23h 45m
2 stops
LIS10:45 amLisbon Humberto Delgado
Jul 7
LIS5:35 amLisbon Humberto Delgado
23h 16m
2 stops
DAY11:51 pmDayton
$1,195
Delta
Jun 29
DAY11:23 amDayton
25h 27m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Jul 8
LIS12:45 pmLisbon Humberto Delgado
26h 51m
2 stops
DAY10:36 amDayton
$1,203

United Airlines flights from Dayton to Portugal

Our best United Airlines deals on Dayton to Portugal flight tickets
United Airlines
Aug 18
DAY7:15 amDayton
18h 45m
2 stops
OPO7:00 amPorto
Sep 2
OPO12:45 pmPorto
30h 16m
2 stops
DAY2:01 pmDayton
$832
United Airlines
Aug 18
DAY9:00 amDayton
16h 55m
2 stops
OPO6:55 amPorto
Sep 2
OPO12:35 pmPorto
16h 09m
2 stops
DAY11:44 pmDayton
$853
United Airlines
Jun 29
DAY2:53 pmDayton
14h 37m
1 stop
LIS10:30 amLisbon Humberto Delgado
Jul 7
LIS12:20 pmLisbon Humberto Delgado
11h 41m
1 stop
DAY7:01 pmDayton
$1,194

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 April 16, 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

7:15 am-7:00 am

2 stops18h 45m

Porto

Wed 9/2

12:45 pm-2:01 pm

2 stops30h 16m

$832
Quickest round-trip

DaytonPorto

DAY - OPO

DAYOPO

Dayton

Tue 8/18

9:00 am-6:55 am

2 stops16h 55m

Porto

Wed 9/2

12:35 pm-11:44 pm

2 stops16h 09m

$853

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-11:05 pm

2 stops47h 48m

Lisbon Humberto Delgado

Wed 7/15

11:05 am-9:25 pm

1 stop15h 20m

$1,053

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-11:05 pm

2 stops47h 48m

Lisbon Humberto Delgado

Wed 7/15

4:25 pm-10:59 pm

2 stops35h 34m

$1,066

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-6:05 pm

2 stops18h 48m

Lisbon Humberto Delgado

Wed 7/15

6:35 am-10:59 pm

2 stops21h 24m

$1,083

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-6:05 pm

2 stops18h 48m

Lisbon Humberto Delgado

Wed 7/15

11:05 am-9:25 pm

1 stop15h 20m

$1,089

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-11:25 pm

2 stops24h 08m

Lisbon Humberto Delgado

Wed 7/15

6:35 am-10:59 pm

2 stops21h 24m

$1,093

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

$1,099

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-11:10 pm

2 stops23h 53m

Lisbon Humberto Delgado

Wed 7/15

6:35 am-10:59 pm

2 stops21h 24m

$1,108

DaytonLisbon

DAY - LIS

DAYLIS

Dayton

Sat 7/4

6:17 pm-6:05 pm

2 stops18h 48m

Lisbon Humberto Delgado

Wed 7/15

11:05 am-9:25 pm

1 stop15h 20m

$1,114

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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

Can stopping save me money on Dayton to Portugal flights?

You could potentially save up to 69% 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

17h 51m

Direct flights

None
The fastest flight from Dayton to Portugal takes 17h 51m
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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