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Cheap flights from Milwaukee to Porto from $921

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to Porto departing on 4/15. 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

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Find the cheapest flights from Milwaukee to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:53 pm - 11:45 am
MKE
-
OPO
15h 52m
2 stops
Multiple Airlines Logo
8:40 pm - 8:06 pm
OPO
-
MKE
29h 26m
2 stops
$921Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
Iberia Logo
1:53 pm - 4:00 pm
MKE
-
OPO
20h 07m
2 stops
Iberia Logo
8:40 pm - 6:00 pm
OPO
-
MKE
27h 20m
2 stops
$923Iberia
Mon, May 11 - Mon, May 18
Delta Logo
12:40 pm - 3:25 pm
MKE
-
OPO
20h 45m
2 stops
Delta Logo
5:00 am - 9:23 pm
OPO
-
MKE
22h 23m
2 stops
$942Delta
Sat, May 9 - Sat, May 16
Delta Logo
6:50 am - 10:30 am
MKE
-
OPO
21h 40m
2 stops
Delta Logo
5:00 am - 10:02 pm
OPO
-
MKE
23h 02m
2 stops
$1,105Delta
Tue, Jun 23 - Tue, Jul 7
Delta Logo
7:00 am - 10:30 am
MKE
-
OPO
21h 30m
1 stop
Delta Logo
5:00 am - 10:02 pm
OPO
-
MKE
23h 02m
2 stops
$1,106Delta
Tue, Jun 23 - Tue, Jul 7
Delta Logo
1:00 pm - 10:20 am
MKE
-
OPO
15h 20m
2 stops
Delta Logo
5:00 am - 2:11 pm
OPO
-
MKE
15h 11m
2 stops
$1,108Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
7:00 am - 10:30 am
MKE
-
OPO
21h 30m
1 stop
Delta Logo
12:25 pm - 10:02 pm
OPO
-
MKE
15h 37m
1 stop
$1,114Delta
Tue, Jun 23 - Tue, Jul 7
Delta Logo
7:15 am - 10:25 am
MKE
-
OPO
21h 10m
1 stop
Delta Logo
11:30 am - 11:53 pm
OPO
-
MKE
18h 23m
2 stops
$1,155Delta
Sun, May 24 - Tue, Jun 2
Delta Logo
1:08 pm - 3:25 pm
MKE
-
OPO
20h 17m
2 stops
Delta Logo
11:30 am - 11:53 pm
OPO
-
MKE
18h 23m
2 stops
$1,159Delta
Sun, May 24 - Tue, Jun 2
Delta Logo
1:54 pm - 10:25 am
MKE
-
OPO
14h 31m
1 stop
Delta Logo
1:05 pm - 9:52 pm
OPO
-
MKE
14h 47m
1 stop
$1,162Delta
Sun, May 24 - Tue, Jun 2

Delta flights from Milwaukee to Porto

Our best Delta deals on Milwaukee to Porto flight tickets
Delta
Apr 2
MKE6:33 pmMilwaukee-Mitchell
14h 52m
2 stops
OPO3:25 pmPorto
Apr 12
OPO5:00 amPorto
18h 53m
2 stops
MKE5:53 pmMilwaukee-Mitchell
$1,101
Delta
Jun 23
MKE6:50 amMilwaukee-Mitchell
21h 40m
2 stops
OPO10:30 amPorto
Jul 7
OPO5:00 amPorto
23h 02m
2 stops
MKE10:02 pmMilwaukee-Mitchell
$1,105
Delta
Jun 23
MKE7:00 amMilwaukee-Mitchell
21h 30m
1 stop
OPO10:30 amPorto
Jul 7
OPO5:00 amPorto
23h 02m
2 stops
MKE10:02 pmMilwaukee-Mitchell
$1,106

Air France flights from Milwaukee to Porto

Our best Air France deals on Milwaukee to Porto flight tickets
Air France
May 15
MKE5:01 pmMilwaukee-Mitchell
16h 24m
2 stops
OPO3:25 pmPorto
May 26
OPO1:05 pmPorto
14h 50m
1 stop
MKE9:55 pmMilwaukee-Mitchell
$1,282
Air France
May 15
MKE5:01 pmMilwaukee-Mitchell
16h 24m
2 stops
OPO3:25 pmPorto
May 26
OPO1:05 pmPorto
14h 50m
1 stop
MKE9:55 pmMilwaukee-Mitchell
$1,283

momondo Fare Finder

 
Customize your flight search to find flights from Milwaukee to Porto 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 March 29, 2026.
Use the filters below to find and compare flights from Milwaukee to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 4/15

1:53 pm-11:45 am

2 stops15h 52m

Porto

Mon 4/20

8:40 pm-8:06 pm

2 stops29h 26m

$921

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 5/11

1:53 pm-4:00 pm

2 stops20h 07m

Porto

Mon 5/18

8:40 pm-6:00 pm

2 stops27h 20m

$923

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sat 5/9

12:40 pm-3:25 pm

2 stops20h 45m

Porto

Sat 5/16

5:00 am-9:23 pm

2 stops22h 23m

$942

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 6/23

6:50 am-10:30 am

2 stops21h 40m

Porto

Tue 7/7

5:00 am-10:02 pm

2 stops23h 02m

$1,105

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 6/23

7:00 am-10:30 am

1 stop21h 30m

Porto

Tue 7/7

5:00 am-10:02 pm

2 stops23h 02m

$1,106

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sat 8/22

1:00 pm-10:20 am

2 stops15h 20m

Porto

Sat 8/29

5:00 am-2:11 pm

2 stops15h 11m

$1,108

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 6/23

7:00 am-10:30 am

1 stop21h 30m

Porto

Tue 7/7

12:25 pm-10:02 pm

1 stop15h 37m

$1,114

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 5/24

7:15 am-10:25 am

1 stop21h 10m

Porto

Tue 6/2

11:30 am-11:53 pm

2 stops18h 23m

$1,155

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 5/24

1:08 pm-3:25 pm

2 stops20h 17m

Porto

Tue 6/2

11:30 am-11:53 pm

2 stops18h 23m

$1,159
Quickest round-trip

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 5/24

1:54 pm-10:25 am

1 stop14h 31m

Porto

Tue 6/2

1:05 pm-9:52 pm

1 stop14h 47m

$1,162

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto from

How to get the cheapest flight ticket from Milwaukee to Porto

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 Milwaukee to Porto flights?

You could potentially save up to 44% on your flight if you consider stops on a Milwaukee to Porto flight.

When to book flights from Milwaukee to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Milwaukee to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Milwaukee to Porto (MKE to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Milwaukee to Porto

Fastest flight time

14h 52m

Direct flights

None
The fastest flight from Milwaukee to Porto takes 14h 52m
There are no direct flights from Milwaukee to Porto. There are no popular flight routes from Milwaukee to Porto.
Search flight deals

  • How far is Milwaukee-Mitchell to Porto by plane?

    There are 3902.8 mi between Milwaukee-Mitchell and Porto. Flights usually cover this in 14h 52m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Porto Airport?

    Prices for flights from Milwaukee-Mitchell Airport to Porto Airport refresh daily.

  • How old do you have to be to fly from Milwaukee-Mitchell Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Milwaukee-Mitchell Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Aveiro
Braga
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Milwaukee to Porto?

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

Can I find flights from Milwaukee to Porto with flexible booking policies on momondo?

All flight searches from Milwaukee to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Milwaukee to Porto?

momondo helps you find the best flight between Milwaukee and Porto by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Milwaukee to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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